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UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549


SCHEDULE 14A
Proxy Statement Pursuant to Section 14
(a)14(a) of the

Securities Exchange Act of 1934
(Amendment No.  )


Filed by the Registrant ýFiled by the Registrant ☒               Filed by a Party other than the Registrant o

Check the appropriate box:

o


Preliminary Proxy Statement

o


Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2))

ý


Definitive Proxy Statement

o


Definitive Additional Materials

o


Soliciting Material under §240.14a-12

Filed by a Party other than the Registrant ☐
Check the appropriate box:

Preliminary Proxy Statement

Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2))

Definitive Proxy Statement

Definitive Additional Materials

Soliciting Material under §240.14a-12
Summit Materials, Inc.
(Name of Registrant as Specified In Its Charter)
(Name of Person(s) Filing Proxy Statement, if other than the Registrant)
Payment of Filing Fee (Check all boxes that apply):

No fee required.

Fee paid previously with preliminary materials.

Fee computed on table in exhibit required by Item 25(b) per Exchange Act Rules 14a-6(i)(1) and 0-11.


Summit Materials, Inc.
(Name of Registrant as Specified In Its Charter)
(Name of Person(s) Filing Proxy Statement, if other than the Registrant)

Payment of Filing Fee (Check the appropriate box):

ý


No fee required.

o


Fee computed on table below per Exchange Act Rules 14a-6(i)(4) and 0-11.
(1)Title of each class of securities to which transaction applies:
(2)Aggregate number of securities to which transaction applies:
(3)Per unit price or other underlying value of transaction computed pursuant to Exchange Act Rule 0-11 (set forth the amount on which the filing fee is calculated and state how it was determined):
(4)Proposed maximum aggregate value of transaction:
(5)Total fee paid:

o


Fee paid previously with preliminary materials.

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Check box if any part of the fee is offset as provided by Exchange Act Rule 0-11(a)(2) and identify the filing for which the offsetting fee was paid previously. Identify the previous filing by registration statement number, or the Form or Schedule and the date of its filing.



(1)


Amount Previously Paid:
(2)Form, Schedule or Registration Statement No.:
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(4)Date Filed:

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LOGO


NOTICE OF 20182022 ANNUAL MEETING OF STOCKHOLDERS

TO BE HELD ON WEDNESDAY, MAY 18, 2022
To Be Held on Thursday, May 17, 2018


The 20182022 Annual Meeting of Stockholders (the "Annual Meeting"“Annual Meeting”) of Summit Materials, Inc. ("(“Summit Materials"Materials” or the "Company"“Company”) will be held at 8:00 a.m., EasternCentral Time, on Thursday,Wednesday, May 17, 2018,18, 2022, at The Post Oak Hotel at Uptown Houston, 1600 West Loop South, Houston, TX 77027. In addition, stockholders will have the offices ofopportunity to attend the Company's subsidiary, Hinkle Contracting Company, LLC, locatedAnnual Meeting through a virtual web conference at 101 Helm St., Suite 110, Lexington, Kentucky 40505www.virtualshareholdermeeting.com/SUM2022. The Annual Meeting is being held for the following purposes:

             1.  To elect the two nominees for director named in the attached Proxy Statement to serve until the 2021 Annual Meeting of Stockholders and until their respective successors are elected and qualified;

             2.  To ratify the appointment of KPMG LLP ("KPMG") as our independent registered public accounting firm for our fiscal year ending December 29, 2018;

             3.  To approve, on a nonbinding advisory basis, the compensation of our named executive officers ("NEOs"), as disclosed in the Proxy Statement; and

             4.  To transact such other business as may properly come before the Annual Meeting or any adjournment or postponement thereof.

              Our

1To elect the four nominees for director, named in the attached Proxy Statement (the “Proxy Statement”) to serve until the 2023 Annual Meeting of Stockholders and until their respective successors are elected and qualified;
2To approve, on a nonbinding advisory basis, the compensation of our named executive officers (“NEOs”), as disclosed in the Proxy Statement;
3To indicate, on a nonbinding advisory basis, whether a nonbinding advisory stockholder vote to approve the compensation of our NEOs should occur every one, two, or three years;
4To ratify the appointment of KPMG LLP (“KPMG”) as our independent registered public accounting firm for our fiscal year ending December 31, 2022; and
5To transact such other business as may properly come before the Annual Meeting or any adjournment or postponement thereof.
The Board of Directors recommends you vote (i) "FOR"“FOR” the election of each of the nominees to the Board; (ii) "FOR" the ratification of the appointment of KPMG as our independent registered public accounting firm; and (iii) "FOR"“FOR” the approval, on a nonbinding advisory basis, of the compensation of our NEOs, as disclosed in the Proxy Statement.

Statement; (iii) for every “ONE YEAR” with respect to how frequently a non-binding advisory stockholder vote to approve the compensation of our NEOs should occur; and (iv) “FOR” the ratification of the appointment of KPMG as our independent registered public accounting firm.

The Board of Directors has fixed March 19, 201823, 2022 as the record date for determining stockholders entitled to receive notice of, and to vote at, the Annual Meeting or any adjournment or postponement thereof. Only stockholders of record at the close of business on that date will be entitled to notice of, and to vote at, the Annual Meeting.

By Order of the Board of Directors



GRAPHIC
Anne Lee Benedict
Executive Vice President, Chief Legal Officer and Secretary

Denver, Colorado
March 30, 2018


Table This Notice of Contents

LOGO

PROXY SUMMARY

The following description is a summary that highlights certain information in the Proxy Statement. You should read the entire2022 Annual Meeting of Stockholders, Proxy Statement carefully before voting. Your vote is important. Whetherand form of proxy are being distributed and made available on or not you plan to attend the Annual Meeting,about April 1, 2022. As always, we encourage you to vote your shares promptly.

prior to the Annual Meeting.

ANNUAL MEETING

DATE:  May 17, 2018
TIME:  8:00 a.m., Eastern Time
LOCATION:  The officesBy Order of the Company's subsidiary, Hinkle Contracting Company, LLC, located at 101 Helm St., Suite 110, Lexington, Kentucky 40505Board of Directors

[MISSING IMAGE: sg_chrisgaskil-bw.jpg]
Christopher B. Gaskill


Executive Vice President, Chief Legal Officer and Secretary

Denver, Colorado
April 1, 2022

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BUSINESS HIGHLIGHTS

SUMMIT MATERIALS
AT A GLANCE

Highlights

WHO WE ARE
Summit Materials is an integrated supplier of heavy-side construction materials such as aggregates, cement, ready-mix concrete, and asphalt, as well as paving services.
We are vertically integrated and we offer our customers a single-source provider for construction materials and related downstream products. Our operations benefit from Summit’s access to capital, IT resources, performance optimization practices and a highly-experienced management team. We believe this model allows us to realize the benefits of locally invested operators with the expertise and economies of scale of a larger entity.
We provide approximately 5,500 jobs, and we believe our people are our greatest asset. We support our employees with:

Health and wellness programs

Training and development programs with broad participation throughout all levels of the Company

An excellent safety track record

Robust community engagement including support for local STEM education projects
We value diversity, equity, and inclusion (“DE&I”):

28% of our 2017 business achievements included the following:

workforce identifies as non-white
Full-year organic sales volumes
56% of aggregates increased 3.4%.
Full-year organic sales volumes of cement increased 5.8%.
Full-year net income increased 331.2% to $121.83 million.
Full-year operating income increased 42.8% to $220.9 million.
Full-year adjusted EBITDA* increased 17.4% to $435.8 million.

*
See "Reconciliation of Non-GAAP Measure to GAAP" on Annex A.

For a more detailed discussion on our financial performance, see our combined Annual Report to Stockholders and Annual Report on Form 10-K for the year ended December 30, 2017 (the "2017 Annual Report"), available atwww.proxyvote.com.

STOCKHOLDER ACTIONS


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ELECTION OF DIRECTORS (Item 1)

You will find important information about the qualifications of each of our director nominees beginning on page 9.Our Board of Directors ("Board") recommendsis female and 60% of our executive officers are female, including our Chief Executive Officer


We have made conscious strides to address DE&I within our business

We implemented an employee stock purchase plan in 2021 that you vote "FOR"allows employees to participate in our growth
Our geographic and end-user diversification and integration help us withstand market cycles:

We operate in 21 states and one Canadian province

Our end market base is roughly 36% state infrastructure-related and approximately 64% residential and non-residential (based on net revenues)
We focus on sustainability and community involvement to secure a stable and profitable future:

At Summit, we recognize that robust environmental and social performance is not only the right thing to do but that it is key to achieving our vision to be the most socially responsible integrated construction materials solution provider. To guide us to our vision, our North Star principles were developed through a company-wide strategic assessment. Those principles include:

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Human / Social Impact: Ensuring people and their communities are valued and can thrive.

Land Reclamation: Measuring every drop of water we consume and returning land better than when we found it.

Carbon Reduction: Reducing CO2 emissions to reach net zero by 2050.

Environmental programs support sustainability and profitability:

We have established both 2030 and 2050 targets for each of the following director nominees.

NamePrincipal Occupation



Howard L. LancePresident and Chief Executive Officer of Maxar Technologies Ltd.

Anne K. Wade


Former Senior Vice President and Director of Capital International, a part of the Capital Group Companies

RATIFICATION OF THE APPOINTMENT OF KPMG (Item 2)

We are seeking ratification ofNorth Star Pillars. Target setting was completed hand-in-hand with the appointment of KPMG to serve as our independent registered public accounting firm for 2018 as set forth in Item 2 on page 19.Our Board recommends that you vote "FOR" the ratification.

NONBINDING ADVISORY VOTE ON THE COMPENSATION OF OUR NEOs (Item 3)

Our stockholders have the opportunity to cast a nonbinding advisory vote on the compensationdevelopment of our NEOs, as set forthElevate strategy. We embedded ESG targets in Item 3 on page 25. Last year, stockholders representing approximately 96%the planning process to ensure business decisions are made with sustainability considerations in mind. Further details for each target are found within our 2021 ESG Report.


Recycled more than 388,000 tons of the votes cast approved our executive compensation programconcrete and more than 11,000 tons of recycled materials including metals, plastics, paper and cardboard in 2021.

Recycled asphalt accounted for our NEOs. In evaluating this "say on pay" proposal, we recommend you review our Compensation Discussion and Analysis beginning on page 28, which explains how and why our Compensation Committee arrived at the compensation actions and decisions for 2017.Our Board recommends that you vote "FOR" the approval, on a nonbinding advisory basis,13% of the compensationtotal tons produced in 2021.

On average, 39.8% of our NEOs.cement plants’ energy came from alternative fuel in 2021. This equates to the amount of power that an estimated 10,200 American homes use in one year.

(1)

In 2021, our Davenport, Iowa Cement Plant’s Wildlife Restoration Area was awarded Gold Tier Conservation Certification by the Wildlife Habitat Council.



Continuing to expand our Green America Recycling facility to increase our use of alternative fuels.

Commercializing Portland Limestone Cement (“PLC”), a cement that requires less emissions to produce.

Piloting next generation low carbon concrete.

Partnering with universities in artificial intelligence solutions for ready-mix concrete optimization.

We provide free Earth Sciences lesson plans that meet Rocks and Minerals Curriculum standards in North America.

Our employees volunteered in several charity initiatives within their communities through company sponsored engagement, with organizations such as United Way and Feeding America.

Our vendor code of conduct, human rights, and environmental policies govern our interactions with our stakeholders.

Our sustainability website (summit-materials.com/sustainability/) includes our sustainability report, which aligns with the Sustainability Accounting Standards Board (SASB) Construction Materials Standard, and further describes our deep commitment to the environment and the communities in which we operate.
1
According to the U.S. Energy Information Administration, in 2020, the average annual electricity consumption for a U.S. residential utility customer was 10,715 kilowatt hours (kWh), an average of about 893 kWh per month. https://www.eia.gov/tools/faqs/faq.php?id=97&t=3.


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The Company’s strong performance was reflected in net income of  $152 million.
2021 PERFORMANCE
In 2021, net revenue increased 4.6% over 2020, and we reported earnings of $152.2 million, or $1.29 per basic share.
Operating income increased 12.4% to $253.1 million:

Strong net revenue gains in our aggregates, ready-mix concrete, and cement lines of business

Net revenue growth across all three reporting Segments

Net income attributable to Summit of $152.2 million, adjusted cash gross profit of $673.3 million, adjusted EBITDA of $520.1 million and free cash flow of $161.6 million*

We focused on sustainable growth with investments in greenfields while advancing strategic divestitures that enhanced our market leadership

Reduced our leverage ratio to 2.5X Net Debt to Adjusted EBITDA (a non-GAAP financial measure) at year end 2021, the lowest debt ratio in the Company’s history
*
Adjusted cash gross profit, EBITDA and free cash flow are non-GAAP financial measures; see “Reconciliation of Non-GAAP Measures to GAAP” on Annex A.
OUR GOVERNANCE

Separate independent Chairman and Chief Executive Officer

56% of Board members are female

Age diversity on the Board; short average tenure; no over-boarded directors

In 2021, the Board was declassified and the supermajority voting requirement necessary to amend certain provisions of the Company’s charter and to remove a director was eliminated

The Board includes senior operational and financial executives with materials, technology, supply chain and investor expertise


Letter from the Chairman
To Our Valued Stakeholders:
In 2021, Summit Materials pursued the highest standards of governance and value creation as it launched its Elevate Summit Strategy. We believe that the unique combination of Summit’s heavyside building materials business, with its presence in expanding rural and exurban markets, presents compelling opportunities for growth, and now Summit is positioned to lead for the long term.
As a Board, we’re invigorated by the transformation brought about by the Elevate Summit Strategy and the exciting path ahead. During the first year of the Elevate Summit Strategy, the Company posted a 99.9% total shareholder return and redeemed $300 million of 5.125% senior notes.
In 2021 we continued to pursue governance best practices by:

De-classifying our Board,

Eliminating supermajority voting requirements,

Achieving Board and Executive gender parity with over 50% female membership of each,

Receiving shareholder approval for an employee stock purchase plan, and

Renaming and restructuring the charters of two Board committees to reflect an increased focus on Board oversight of environmental, social & governance (ESG) matters.
Specifically, we now have a Human Capital and Compensation Committee and Governance and Sustainability Committee and an expanded charter for our Audit Committee to more clearly reflect Board oversight of critical ESG matters and related disclosures, including diversity, equity and inclusion, talent acquisition, sustainability, and environmental risk.
We were delighted to add Tamla Oates-Forney to our Board of Directors in 2021. Ms. Oates-Forney brings important perspective on human capital, cultivated through her leadership roles at Waste Management as well as at GE, where she was the highest ranking African American female executive. She joins Summit’s Board at a time when an emphasis on hiring, retention and employee development is imperative to foster strategic growth and market leadership.
In summary, 2021 has been the most exciting and transformative year for Summit Materials since our IPO. We thank you for your continued support, and look forward to building on that success.
Sincerely,
[MISSING IMAGE: sg_howardlance-bw.jpg]
Howard Lance
Chairman of the Board of Directors
Summit Materials, Inc.


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1

GENERAL INFORMATION

51

Outstanding Securities and Quorum


52

Internet Availability of Proxy Materials

Proxy Voting


6

Voting Standard


6

Voting and Attendance at the Annual Meeting


8

Revocation


8

ITEM 1—ELECTION OF DIRECTORS


9

Biographical and Related Information of Director Nominees and Continuing Directors


9

Nominees for Director Whose Terms Would Expire at the 2021 Annual Meeting


9

Directors Whose Terms Expire at the 20202022 Annual Meeting


102

Directors Whose Terms Expire at the 20192023 Annual Meeting


116

Corporate Governance


128

ITEM 2—RATIFICATION OF APPOINTMENT OF KPMG LLP


1911

Independent Registered Public Accounting Firm


1915

AUDIT COMMITTEE REPORT


2118

BENEFICIAL OWNERSHIP OF SHARES


2220

ITEM 3—NONBINDING ADVISORY VOTE ON THE COMPENSATION OF OUR NEOs


2521

COMPENSATION COMMITTEE REPORT


2622

EXECUTIVE COMPENSATION


2723

Executive Summary

Compensation Discussion and Analysis

Analysis—Executive Summary

2824

Compensation Tables

Discussion and Analysis—What We Paid

4425

Summary Compensation Table

Discussion and Analysis—How We Paid

4433

2017 Grants of Plan-Based Awards


4538

Narrative Disclosure to Summary Compensation Table and Grants of Plan-Based Awards Table


4640

Outstanding Equity Awards at 2017 Fiscal Year-End


4847

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2017 Option Exercises and Stock Vested

47
48
49

2017 Non-Qualified Deferred Compensation


50

Potential Payments Upon Termination or Change in Control


5150

CEO Pay Ratio


5750

Director Compensation


5852

CERTAIN RELATIONSHIPS AND RELATED PERSON TRANSACTIONS


6053

SECTION 16(a) BENEFICIAL OWNERSHIP REPORTING COMPLIANCE


6553

EXPENSES OF SOLICITATION


6555

OTHER MATTERS

PROPOSALS OF STOCKHOLDERS


65

HOUSEHOLDING: AVAILABILITY OF ANNUAL REPORT ON FORM 10-K AND PROXY STATEMENT


66

ANNEX AA: RECONCILIATION OF NON-GAAP MEASUREMEASURES TO GAAP

59

[MISSING IMAGE: tm223385d2-box_header4c.jpg]
OUR BOARD OF DIRECTORS
ITEM 1
ELECTION OF DIRECTORS
The board of directors (the “Board”) of Summit Materials, Inc. (“Summit Materials” or the “Company”) currently has nine seats, divided into three classes: Class I, Class II and Class III.

67
Our Class I directors are Joseph S. Cantie, Anne M. Cooney, Anne P. Noonan and Tamla Oates-Forney and their terms will expire at this Annual Meeting.

Our Class II directors are John R. Murphy and Steven H. Wunning, and their terms will expire at the 2023 Annual Meeting.

Our Class III directors are Howard L. Lance, Anne K. Wade and Susan A. Ellerbusch, and their terms will expire at the 2024 Annual Meeting.
At the Company’s 2021 Annual Meeting, the Company’s stockholders approved and adopted an amendment to the Company’s amended and restated Certificate of Incorporation (the “Charter”) to remove the three separate classes of directors of the Board and replace with one class of directors (the “Declassification Amendment”). As a result, (i) the current Class I directors will be elected at this Annual Meeting to serve for a term of one year, (ii) the current Class I and II directors will be elected at the 2023 Annual Meeting to serve for a term of one year, and (iii) the current Class I, II and III directors will be elected at the 2024 Annual Meeting to serve for a term of one year, at which time all directors will be elected to serve for one year terms at all subsequent Annual Meetings.
Accordingly, the Board proposes that Mr. Cantie and Mss. Cooney, Noonan and Oates-Forney be reelected to Class I for a one-year term expiring at the 2023 Annual Meeting. Each nominee for director will, if elected, continue in office until the 2023 Annual Meeting and until the director’s successor has been duly elected and qualified, or until the earlier of the director’s death, resignation or removal.
The proxy holders named on the proxy card intend to vote the proxy (if you are a stockholder of record) for the election of each of these nominees, unless you indicate on the proxy card that your vote should be withheld for any of the nominees. Under Securities and Exchange Commission (“SEC”) rules, proxies cannot be voted for a greater number of persons than the number of nominees named.
Each nominee has consented to be named as a nominee in this Proxy Statement and to serve if elected. If any nominee is not able to serve, proxies will be voted in favor of the other nominees and may be voted for a substitute nominee, unless the Board chooses to reduce the number of directors serving on the Board.
THE BOARD RECOMMENDS A VOTE “FOR” EACH NOMINEE

2022 NOTICE OF ANNUAL MEETING AND PROXY STATEMENT

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SUMMIT MATERIALS INC.| 1



PROXY STATEMENT


ANNUAL MEETING

TABLE OF STOCKHOLDERS

To Be Held on Thursday, May 17, 2018

GENERAL INFORMATION

              The enclosed proxy is solicited by the Board of Directors (the "Board") of Summit Materials, Inc. ("Summit Materials" or the "Company") for use at the Annual Meeting of Stockholders (the "Annual Meeting") to be held at 8:00 a.m., Eastern Time, on Thursday, May 17, 2018, at the offices of the Company's subsidiary, Hinkle Contracting Company, LLC, located at 101 Helm St., Suite 110, Lexington, Kentucky 40505, and at any adjournment or postponement thereof. Our principal executive offices are located at 1550 Wynkoop Street, 3rd Floor, Denver, Colorado 80202. This Proxy Statement is first being made available to our stockholders on or about March 30, 2018.

CONTENTS


Outstanding Securities and Quorum

Who We Are

              Only holders of record of our Class A Common Stock and Class B Common Stock (each such designation having par value $0.01 per share) at

We, the close of business on March 19, 2018, the record date, will be entitled to notice of, and to vote at, the Annual Meeting. On that date, we had 111,228,077 shares of Class A Common Stock outstanding and entitled to vote and 97 shares of Class B Common Stock outstanding and entitled to vote. Holders of shares of our Class A Common Stock and Class B Common Stock vote together as a single class on all matters on which stockholders are entitled to vote generally (except as may be required by law).

              Each share of Class A Common Stock is entitled to one vote for each director nominee and one vote for each other item to be voted on at the Annual Meeting. All of the shares of our outstanding Class B Common Stock are currently held by our pre-initial public offering ("IPO") investors, including certain members of management or their family trusts that directly hold limited partnership interests (the "LP Units"). A holderyour Board, take seriously our jobs of Class B Common Stock is entitled, without regard to the number of shares of Class B Common Stock held by such holder, to a number of votes that is equal to the aggregate number of LP Units held by such holder. As of the record date, the total number of LP Units to which the voting power of the Class B Common Stock relates was 3,332,266.

              A majority of the voting power of Class A Common Stock and Class B Common Stock entitled to vote, present in person or represented by proxy, constitutes a quorum for the transaction of business at the Annual Meeting. Abstentions and broker non-votes will be included in determining the presence of a quorum at the Annual Meeting.

Internet Availability of Proxyoverseeing Summit Materials

              We are furnishing proxy materials to some of our stockholders via the Internet by mailing a Notice of Internet Availability of Proxy Materials, instead of mailing printed copies of those materials. The Notice of Internet Availability of Proxy Materials directs stockholders to a website where they can access our proxy materials, including this Proxy Statement and our Annual Report on Form 10-K for the year ended


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December 30, 2017 (the "2017 Annual Report"), and view instructions on how to vote via the Internet or by telephone. If you received a Notice of Internet Availability of Proxy Materials and would prefer to receive a paper copy of our proxy materials, please follow the instructions included in the Notice of Internet Availability of Proxy Materials. If you elect to receive our future proxy materials electronically, you will receive access to those materials via e-mail unless and until you elect otherwise.

Proxy Voting

              Shares that are properly voted via the Internet or by telephone or for which proxy cards are properly executed and returned will be voted at the Annual Meeting in accordance with the directions given or, in the absence of directions, will be voted in accordance with the Board's recommendations as follows: "FOR" the election of each of the nominees to the Board named herein; "FOR" the ratification of the appointment of our independent registered public accounting firm; and "FOR" the approval, on a nonbinding advisory basis, of the compensation of our named executive officers ("NEOs") as disclosed in this Proxy Statement. It is not expected that any additional matters will be brought before the Annual Meeting, but if other matters are properly presented, the persons named as proxies in the proxy card or their substitutes will vote in their discretion on such matters.

              The manner in which your shares may be voted depends on how your shares are held. If you own shares of record, meaning that your shares are represented by certificates or book entries in your name so that you appear as a stockholder on the records of Broadridge Financial Solutions, Inc. ("Broadridge"), our stock transfer agent, you may vote by proxy, meaning you authorize individuals named in the proxy card to vote your shares. You may provide this authorization by voting via the Internet, by telephone or (if you have received paper copies of our proxy materials) by returning a proxy card. In these circumstances, if you do not vote by proxy or in person at the Annual Meeting, your shares will not be voted. If you own shares in street name, meaning that your shares are held by a bank, brokerage firm, or other nominee, you may instruct that institution on how to vote your shares. You may provide these instructions by voting via the Internet, by telephone, or (if you have received paper copies of proxy materials through your bank, brokerage firm, or other nominee) by returning a voting instruction form received from that institution.

Voting Standard

              With respect to the election of directors (Item 1), a nominee for director shall be elected to the Board by a plurality of the votes cast in respect of the shares of common stock present in person or represented by proxy at the Annual Meeting and entitled to vote on the election of directors. A plurality vote requirement means that the director nominees with the greatest number of votes cast "FOR," even if less than a majority, will be elected. You may vote "FOR" or "WITHHOLD" with respect to each nominee. A withhold vote in the election of directors will have the same effect as an abstention. Neither a withhold vote nor a broker non-vote will affect the outcome of the election of directors. Broker non-votes occur when a person holding shares in street name, such as through a brokerage firm, does not provide instructions as to how to vote those shares and the broker lacks the authority to vote uninstructed shares at its discretion. Under current New York Stock Exchange ("NYSE") interpretations that govern broker non-votes, Items 1 and 3 are considered non-discretionary matters, and a broker will lack the authority to vote uninstructed shares at its discretion on such proposals. Item 2 is considered a discretionary matter, and a broker will be permitted to exercise its discretion to vote uninstructed shares on the proposal. This means that, if you do not provide voting instructions on Item 2, your broker may nevertheless vote your shares on your behalf with respect to the ratification of the appointment of KPMG as our independent registered public accounting firm for the fiscal year ending December 29, 2018, but cannot vote your sharesand on any other matters being considered at the Annual Meeting.


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              For all matters proposed for a vote at the Annual Meeting other than the election of directors (Item 1), the affirmative vote of a majority of the voting power of common stock present in person or represented by proxy and entitled to vote on the matter is required to approve the matter. With respect to the ratification of the appointment of KPMG as our independent registered public accounting firm for the fiscal year ending December 29, 2018 (Item 2) and the nonbinding advisory vote on the compensationbehalf of our NEOs (Item 3), you may vote "FOR," "AGAINST," or "ABSTAIN." For these matters, abstentions are not counted as affirmative votes on a matter but are counted as present at the Annual Meeting and entitled to vote and will have the effect of a vote "against" the matter, and broker non-votes, if any, will have no effect on the outcome of these matters.

              Voting via the Internet or by telephone helps save money by reducing postage and proxy tabulation costs.

GRAPHICGRAPHIC
VOTE BY INTERNET
Shares Held of Record:
www.proxyvote.com
Shares Held in Street Name:
www.proxyvote.com
24 hours a day / 7 days a week
VOTE BY TELEPHONE
Shares Held of Record:

800-690-6903
Shares Held in Street Name:
See Voting Instruction Form
24 hours a day / 7 days a week

INSTRUCTIONS:


INSTRUCTIONS:

Read this Proxy Statement.

Read this Proxy Statement.

Go to the website listed above.

Call the applicable number noted above.

Have your Notice of Internet Availability of Proxy Materials, proxy card, or voting instruction form in hand and follow the instructions.

Have your Notice of Internet Availability of Proxy Materials, proxy card, or voting instruction form in hand and follow the instructions.

GRAPHIC

VOTE BY MAIL. If you have received paper copies of our proxy materials, you have the option to vote by mail by marking, dating and signing your proxy card or voting instruction form and returning it in the postage-paid envelope.

We encourage you to register to receive all future stockholder communications electronically, instead of in print. This means that, after you register, access to the annual report, proxy statement,employees, customers, suppliers and other correspondence will be deliveredstakeholders, all of whom uniquely matter to you via e-mail.us.


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Voting and Attendance at the Annual Meeting

              If you own common stock of record, you may attend the Annual Meeting and vote in person, regardless of whether you have previously voted by proxy card, via the Internet or by telephone. If you own common stock in street name, you may attend the Annual Meeting, but in order to vote your shares at the Annual Meeting you must obtain a "legal proxy" from the bank, brokerage firm, or other nominee that holds your shares. You should contact your bank or brokerage account representative to learn how to obtain a legal proxy. We encourage you to vote your shares in advance of the Annual Meeting by one of the methods described above, even if you plan on attending the Annual Meeting. If you have already voted prior to the Annual Meeting, you may nevertheless change or revoke your vote at the Annual Meeting as described below. Only stockholders as of the record date (March 19, 2018) are entitled to attend the Annual Meeting in person. If you own common stock of record, your name will be on a list and you will be able to gain entry with a government-issued photo identification, such as a driver's license, state-issued identification card, or passport. If you own common stock in street name, in order to gain entry you must present a government-issued photo identification and proof of beneficial stock ownership as of the record date, such as your Notice of Internet Availability of Proxy Materials, a copy of your proxy card or voting instruction form if you received one, or an account or brokerage statement or other similar evidence showing stock ownership as of the record date. If you are a representative of an entity that owns common stock of the Company, you must present a government-issued photo identification, evidence that you are the entity's authorized representative or proxyholder and, if the entity is a street name owner, proof of the entity's beneficial stock ownership as of the record date.

              If you are not a stockholder, you will be entitled to admission only if you have a valid legal proxy from a record holder and a government-issued photo identification. Each stockholder may appoint only one proxyholder or representative to attend on his or her behalf.

              You can find directions to the Annual Meeting atinvestors.summit-materials.com/FinancialDocs. Cameras, recording devices and other electronic devices are prohibited at the Annual Meeting.

Revocation

              If you own common stock of record, you may revoke your proxy or change your voting instructions at any time before your shares are voted at the Annual Meeting by delivering to the Secretary of the Company a written notice of revocation or a duly executed proxy (via the Internet or telephone or by returning a proxy card) bearing a later date or by attending the Annual Meeting and voting in person. A stockholder owning common stock in street name may revoke or change voting instructions by contacting the bank, brokerage firm or other nominee holding the shares or by obtaining a legal proxy from such institution and voting in person at the Annual Meeting.

Important Notice Regarding the Availability of Proxy Materials for the Summit Materials, Inc.
Annual Meeting of Stockholders to be Held on Thursday, May 17, 2018

This Notice, our Proxy Statement, and our combined Annual Report and Annual Report on
Form 10-K for the year ended December 30, 2017 are available at www.proxyvote.com


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ITEM 1—ELECTION OF DIRECTORS

              Our Board currently has eight seats, divided into three classes: Class I, Class II and Class III. Each class consists, as nearly as possible, of one-third of the total number of directors.

    Our Class I directors are Thomas W. Hill, Joseph S. Cantie and Neil P. Simpkins, and their terms will expire at the 2019 Annual Meeting.

    Our Class II directors are Ted A. Gardner, John R. Murphy and Steven H. Wunning, and their terms will expire at the 2020 Annual Meeting.

    Our Class III directors are Howard L. Lance and Anne K. Wade, and their terms will expire at this Annual Meeting.

              The Board proposes that Mr. Lance and Ms. Wade be reelected to Class III for new terms of three years each. Each nominee for director will, if elected, continue in office until the 2021 Annual Meeting and until the director's successor has been duly elected and qualified, or until the earlier of the director's death, resignation or removal. The proxy holders named on the proxy card intend to vote the proxy (if you are a stockholder of record) for the election of each of these nominees, unless you indicate on the proxy card that your vote should be withheld for any of the nominees. Under Securities and Exchange Commission ("SEC") rules, proxies cannot be voted for a greater number of persons than the number of nominees named.

              Each nominee has consented to be named as a nominee in this Proxy Statement and to serve if elected. If any nominee is not able to serve, proxies will be voted in favor of the other nominees and may be voted for a substitute nominee, unless the Board chooses to reduce the number of directors serving on the Board.

THE BOARD RECOMMENDS A VOTE "FOR" EACH NOMINEE.

Biographical and Related Information of Director Nominees and Continuing Directors

              The principal occupations and certain other information about our director nominees and our continuing directors (including the skills and qualifications that led to the conclusion that they should serve as directors) are set forth below. The age shown below for each director is as of May 17, 2018, which is the date of the Annual Meeting.

Nominees for Director Whose Terms Would Expire at the 2021 Annual Meeting

The Board has nominated twofour directors to be elected at the Annual Meeting to each serve for three-yearone-year terms ending with the 20212023 Annual Meeting of Stockholders and until a successor is duly elected and qualified, or until the earlier of the director'sdirector’s death, resignation or removal. Each nominee is currently a director of the Company and has agreed to serve if elected.

The age shown below for each director is as of May 18, 2022, which is the date of the Annual Meeting.

Howard L. LanceDirectors Whose Terms Expire at the 2022 Annual Meeting
[MISSING IMAGE: ph_joesephcantie-4c.jpg]
Joseph S. Cantie
Age: 58
Director since 2016
BOARD COMMITTEES

Audit
OTHER BOARDS

TopBuild Corp

Howmet Aerospace Inc.
Joseph S. Cantie is the former Executive Vice President and Chief Financial Officer of ZF TRW, a division of ZF Friedrichshafen AG, a global automotive supplier, a position he held from May 2015 until January 2016.
Career Highlights

Executive Vice President and Chief Financial Officer, TRW Automotive Holdings Corp., which was acquired by ZF Industries in May 2015 (2003-2015)

Various executive positions at TRW Automotive Holdings Corp. (1999-2003)

Various executive positions, including Vice President and Controller of LucasVarity Plc (1996-1999)
Skills / Experience

Financial and operating experience

Extensive knowledge of the industrial sector
Education

BS, State University of New York at Buffalo
Also…
Mr. Cantie spent 10 years at KPMG and is a certified publicaccountant.
, 62, began2 | SUMMIT MATERIALS2022 NOTICE OF ANNUAL MEETING AND PROXY STATEMENT

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[MISSING IMAGE: ph_annecooney-4c.jpg]
Anne M. Cooney
Age: 62
Director since 2018
BOARD COMMITTEES

Human Capital and Compensation

Governance and Sustainability (Chair)
OTHER BOARDS

The Manitowoc Company, Inc.

WESCO International, Inc.
Anne M. Cooney is the former President of the Process Industries and Drives Division of Siemens Industry, Inc., a division of Siemens AG, a multinational conglomerate primarily engaged in industrial engineering, electronics, energy, healthcare and infrastructure activities, a position she held from October 2014 until her retirement in December 2018.
Career Highlights

President, Process Industries and Drives Division of Siemens Industry, Inc. (2014-2018)

Chief Operating Officer, Siemens Healthcare’s Diagnostics division (2011-2014)

President, Drives Technologies Division, Siemens Industry, Inc. (2009-2011)
Skills / Experience

Leadership experience

Management and operational experience
Education

BS in Industrial Management, Gannon University

MBA, Emory University
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[MISSING IMAGE: ph_noonananne-4clr.jpg]
Anne P. Noonan
Age: 58
Director since 2020
BOARD COMMITTEES

N/A
OTHER BOARDS

CF Industries Holdings, Inc.
Anne P. Noonan was named the President and Chief Executive Officer of Summit Materials on September 1, 2020. Prior to joining Summit Materials, Ms. Noonan served as president and chief executive officer and as a director of OMNOVA Solutions Inc. (“OMNOVA”), a global provider of emulsion polymers, specialty chemicals, and engineered surfaces for a variety of commercial, industrial, and residential end uses, with manufacturing, technical, and other facilities located in North America, Europe, China, and Thailand, from December 2016 until April 1, 2020 when OMNOVA was acquired by Synthomer plc.
Career Highlights

President and Chief Executive Officer, Summit Materials (September 2020-present)

President and Chief Executive Officer, OMNOVA (November 2016 -April 2020)

President, Performance Chemicals, OMNOVA (2014-November 2016)
Skills / Experience

Public company governance experience

Operational expertise

Environmental and safety expertise

Extensive experience in risk management and accounting and finance

Corporate strategy, strategic initiative, and mergers & acquisitions expertise

Innovation and marketing

Advocacy and regulatory affairs
Education

BS in Chemistry, University College Dublin, Ireland

MS in Organometallic Chemistry, University College Dublin, Ireland
Also…
Ms. Noonan spent 27 years at Chemtura Corporation, a global manufacturer of specialty chemicals.
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[MISSING IMAGE: ph_tamlaoates-4clr.jpg]
Tamla Oates-
Forney
Age: 50
Director since 2021
BOARD COMMITTEES

Human Capital and Compensation
Tamla Oates-Forney is currently the Senior Vice President, Chief People Officer, at Waste Management, a Fortune 250 environmental services company.
Career Highlights

Senior Vice President, Chief People Officer, at Waste Management (December 2018-present)

Various positions of increasing responsibility during a 20-year career at General Electric, including most recently as Vice President, Human Resources, GE Energy Connections, an electrification and automation business included in the General Electric Company multinational conglomerate from 2014 to April 2018
Skills / Experience

Leadership experience

Extensive knowledge of the industrial sector
Education

BS in Business Administration, University of North Carolina at Chapel Hill
Also…

Ms. Oates-Forney serves on the board of advisors of the University of North Carolina Kenan—Flagler Business School.
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Directors Whose Terms Expire at the 2023 Annual Meeting
[MISSING IMAGE: ph_johnmurphy-4c.jpg]
John R. Murphy
Age: 71
Director since 2012
BOARD COMMITTEES

Audit (Chair)

Governance and Sustainability
OTHER BOARDS

O’Reilly Automotive, Inc.

Apria, Inc.
John R. Murphy served as Summit Materials’ Interim Chief Financial Officer from January 2013 to May 2013 and from July 2013 to October 2013.
Career Highlights

Senior Vice President and Chief Financial Officer of Smurfit-Stone Container Corporation (2009-2010)

Various senior management roles, including Chief Financial Officer and President and Chief Operating Officer and as President and Chief Executive Officer, of Accuride Corporation (1998-2008)
Skills / Experience

Financial expertise

Management experience
Education

BS in Accounting, Pennsylvania State University

MBA, University of Colorado
Also…
Mr. Murphy is a Certified Public Accountant.
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[MISSING IMAGE: ph_stevewunning-4c.jpg]
Steven H.
Wunning
Age: 71
Director since 2016
BOARD COMMITTEES

Human Capital and Compensation (Chair)

Governance and Sustainability
OTHER BOARDS

The Sherwin Williams Company

Kennametal Inc.

Black & Veatch Holding Company
Steven H. Wunning served as Group President and Executive Office Member for Caterpillar Inc. (“Caterpillar”) from January 2004 until his retirement in February 2015. He joined Caterpillar in 1973.
Career Highlights

Group President and Executive Office Member for Caterpillar from January 2004 until his retirement in February 2015

Various executive positions at Caterpillar, including Vice President, Logistics Division from January 2000 to January 2004 and Vice President, Logistics & Product Services Division from November 1998 to January 2000
Skills / Experience

Extensive board and management experience

Industrial and building products industry expertise
Education

BS in Metallurgical Engineering from Missouri University of Science and Technology

MBA, University of Illinois Urbana-Champaign
Also…
Mr. Wunning serves on the Board of Trustees of Missouri University of Science and Technology.
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Directors Whose Terms Expire at the 2024 Annual Meeting
[MISSING IMAGE: ph_susanellerbusch-4c.jpg]
Susan A.
Ellerbusch
Age: 54
Director since 2018
BOARD COMMITTEES

Audit
Ms. Ellerbusch is currently the Senior Vice President, Strategic Direction for the Americas of Air Liquide S.A., a world leader in gases, technologies and services for industry and health, with a presence in 80 countries and more than 3 million customers and patients.
Career Highlights

Chief Executive Officer of Air Liquide North America LLC (September 2019-January 2022)

Chief Executive Officer of Air Liquide USA LLC (June 2017-September 2019)

President, Air Liquide Large Industries U.S. (September 2015-June 2017)

Various executive positions, including President, BP Biofuels North America from 2008 to 2015
Skills / Experience

Management and operational experience

Extensive knowledge of chemicals and energy industries
Education

BS in genetics, University of Illinois Urbana-Champaign

MBA, University of Illinois Chicago
Also…
As head of Air Liquide’s operations in the U.S. and Canada, Ms. Ellerbusch led the company’s Large Industries, Industrial Merchant, Health Care, Hydrogen Mobility and Electronics businesses.
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[MISSING IMAGE: ph_lance-4clr.jpg]
Howard L. Lance
Age: 66
Director since 2012
Chairman since 2013
BOARD COMMITTEES

Human Capital and Compensation

Governance and Sustainability
OTHER BOARDS

Change Healthcare, Inc.

New Vista Acquisition Corp.
Howard L. Lance is the former President and Chief Executive Officer of Maxar Technologies Inc. and its predecessor MacDonald, Dettwiler and Associates Ltd., a global communications and information company, a position he held from May 2016 until January 2019.
Career Highlights

President and Chief Executive Officer, Maxar Technologies Inc. (May 2016-January 2019)

Executive Advisor to The Blackstone Group L.P. (2012-April 2016)

President & CEO, Harris Corporation (2003-2011)
Skills / Experience

Leadership experience

Extensive management and operational experience
Education

BS in Industrial Engineering, Bradley University

MS in Management from the Krannert School of Management at Purdue University
Also…
Before joining Harris Corporation, Mr. Lance was co-president of NCR Corporation and Chief Operating Officer of its Retail and Financial Group. Previously, he spent 17 years with Emerson Electric Co., where he held senior management positions including Executive Vice President of its Electronics and Telecommunications segment, Chief Executive Officer and director of its Astec electronics subsidiary in Hong Kong, Group Vice President of its Climate Technologies segment and President of its Copeland Refrigeration division.
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[MISSING IMAGE: ph_annewade-4c.jpg]
Anne K. Wade
Age: 50
Director since 2016
BOARD COMMITTEES

Audit
OTHER BOARDS

Man Group plc

Big Society Capital Ltd.
Anne K. Wade is currently a partner at Leaders’ Quest, an organization focused on culture, values, and driving social and financial impact in major corporations.
Career Highlights

As part of Leaders’ Quest, Co-Director of the Banking Futures initiative in the UK (2014-2017)

Senior Vice President and Director, Capital International, a part of the Capital Group Companies (1995-2012)
Skills / Experience

Financial and investing experience

Extensive knowledge of infrastructure sectors
Education

BA, magna cum laude, Harvard University

MS, London School of Economics
Also…
Ms. Wade is a Member of the Board of Trustees of the Heron Foundation in New York.
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Board Organization
Good corporate governance at Summit Materials starts at the top—with how we, as the Board, are governed. We believe our board governance incorporates best-practice standards as appropriate for our Company:

We have an independent board Chairman

All members of our committees are independent

All of our non-employee directors are independent

All directors may request that items be added to the Board’s agenda or the agenda of any committee on which they serve
Our Board is currently divided into three classes. At the Board’s recommendation, at the Company’s 2021 Annual Meeting, the Company’s stockholders approved and adopted the Declassification Amendment. Accordingly, (i) the current Class I directors will be elected at this Annual Meeting to serve onfor a term of one year, (ii) the Board in October 2012current Class I and was formallyII directors will be elected asat the 2023 Annual Meeting to serve for a directorterm of one year, and Chairman in February 2013. He has served as President(iii) the current Class I, II and Chief Executive OfficerIII directors will be elected at the 2024 Annual Meeting to serve for a term of Maxar


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Technologies Ltd. ("Maxar"), formerly known as MacDonald, Dettwiler and Associates Ltd., a global communications and information company, since May 2016. Mr. Lance also sits on Maxar's board of directors. Prior to joining Maxar, Mr. Lance was an Executive Advisor to The Blackstone Group L.P. ("Blackstone") and as part of his duties as such, he served on the boards of certain Blackstone portfolio companies. He is also a director of Change Healthcare, Inc. He was Chairman of the Board of Directors, President and Chief Executive Officer of Harris Corporation from 2003 to 2011. Before joining Harris Corporation, Mr. Lance was president of NCR Corporation and Chief Operating Officer of its Retail and Financial Group. Previously, he spent 17 years with Emerson Electric Co., where he held senior management positions including Executive Vice President of its Electronics and Telecommunications segment, Chief Executive Officer and director of its Astec electronics subsidiary in Hong Kong, Group Vice President of its Climate Technologies segment and President of its Copeland Refrigeration division. Mr. Lance has a Bachelor of Science degree in Industrial Engineering from Bradley University and a Master of Science degree in Management from the Krannert School of Management at Purdue University.

              In nominating Mr. Lance for reelection as a director, the Board considered Mr. Lance's significant management and operational experience from his service in various senior management roles, including as President and Chief Executive Officer of Maxar and of Harris Corporation and as President and Chief Operating Officer of NCR Corporation.

Anne K. Wade, 46, was appointed by the Board as a director in January 2016,one year, at which time she was also appointedall directors will be elected to the Audit Committee. From 1995 to 2012, Ms. Wade held positions of increasing responsibility, most recently as Senior Vice President and Director,serve for one year terms at Capital International, a part of the Capital Group Companies, the Los Angeles based investment management firm. Ms. Wade is currently a partner at Leaders' Quest, an organization focused on culture, values, and driving social and financial impact in major corporations. In that capacity she was the co-Director of the BankingFutures initiative in the United Kingdom. Ms. Wade also currently serves on the Boards of Directors of the John Laing Group plc, where she chairs the Remuneration Committee, Big Society Capital Ltd in London, and the Heron Foundation in New York City. She previously served on the Board of Directors of Holcim Ltd from 2013 to 2015, and was a member of its Governance and Strategy Committee. Ms. Wade has a Bachelor of Arts degree, Magna Cum Laude, from Harvard University and a Master of Science from the London School of Economics.all subsequent Annual Meetings.

              In nominating Ms. Wade for reelection as a director, the Board considered Ms. Wade's significant financial and investing experience, primarily in infrastructure sectors including the global building materials and construction industries, including as Senior Vice President and Director of Capital International.

Directors Whose Terms Expire at the 2020 Annual Meeting

Ted A. Gardner, 60, was elected as a director in August 2009. He is a Managing Partner of Silverhawk Capital Partners (together with its affiliates, "Silverhawk"). Prior to co-founding Silverhawk in 2005, Mr. Gardner was a Managing Partner of Wachovia Capital Partners (formerly, First Union Capital Partners) from 1989 until 2002. He was a director and Chairman of the Compensation Committee of Kinder Morgan, Inc. from 1999 to 2007, a director and the Chairman of the Audit Committee of Encore Acquisition Company from 2001 to 2010, a director of Kinder Morgan Energy Partners from 2011 to 2014 and a director and Chairman of the Audit Committee of Athlon Energy, Inc. from 2013 to 2014. He is currently a director of Kinder Morgan, Inc., Incline Niobrara Partners, LP and Spartan Energy Partners. Mr. Gardner received a Bachelor of Arts degree in Economics from Duke University and a Juris Doctor and Masters of Business Administration from the University of Virginia.


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              Mr. Gardner brings to the Board extensive business and leadership experience, including as a Managing Partner of Silverhawk and Managing Partner of Wachovia Capital Partners (formerly, First Union Capital Partners). In addition, Mr. Gardner has over 30 years of private equity investing experience.

John R. Murphy, 67, was elected as a director and Chairman of the Audit Committee in February 2012. Since March 2015, he also has served as a member of the Nominating and Corporate Governance Committee. Mr. Murphy served as Summit Materials' Interim Chief Financial Officer from January 2013 to May 2013 and from July 2013 to October 2013. He was Senior Vice President and Chief Financial Officer of Smurfit-Stone Container Corporation from 2009 to 2010 and served in various senior management roles from 1998 to 2008, including Chief Financial Officer and President and Chief Operating Officer and as President and Chief Executive Officer of Accuride Corporation. Accuride Corporation filed for Chapter 11 bankruptcy protection in October 2009 and emerged in 2010. Since 2003, Mr. Murphy has served on the Board, the Governance Committee and as Chairman of the Audit Committee of O'Reilly Automotive, Inc. He has also served as a director and Audit Committee Chairman of DJO Global Inc. since January 2012. Mr. Murphy was elected as a director and Audit Committee member of Graham Packaging in February 2011. Graham Packaging was subsequently sold in September 2011. Mr. Murphy has a Bachelor of Science degree in Accounting from Pennsylvania State University and a Master of Business Administration degree from the University of Colorado and is a Certified Public Accountant.

              Mr. Murphy brings to the Board extensive financial knowledge, including from his service as Chief Financial Officer of Smurfit-Stone Container Corporation and Accuride Corporation.

Steven H. Wunning, 67, was appointed by the Board as a director in August 2016, at which time he was also appointed to the Compensation Committee. He served as Group President and Executive Office Member for Caterpillar Inc. ("Caterpillar") from January 2004 until his retirement in February 2015. Mr. Wunning joined Caterpillar in 1973 and held a variety of positions of increasing responsibility with Caterpillar, including Vice President, Logistics Division from January 2000 to January 2004 and Vice President, Logistics & Product Services Division from November 1998 to January 2000. Mr. Wunning is also a director of The Sherwin Williams Company, Kennametal Inc., Black & Veatch Holding Company and Neovia Logistics Services, LLC. Mr. Wunning serves on the Board of Trustees of Missouri University of Science and Technology. He obtained his Bachelor of Sciences degree in Metallurgical Engineering from Missouri University of Science and Technology and an executive Masters of Business Administration from the University of Illinois.

              Mr. Wunning brings to the Board expansive operating and board experience across the industrial and building products industries, including his more than 40 years at Caterpillar.

Directors Whose Terms Expire at the 2019 Annual Meeting

Thomas W. Hill, 62, is the founder of Summit Materials and has been President and Chief Executive Officer since its inception. He has been a member of the Board of Directors since August 2009. From 2006 to 2008, he was the Chief Executive Officer of Oldcastle, Inc. ("Oldcastle"), the North American arm of CRH plc, one of the world's leading construction materials companies. Mr. Hill served on the CRH plc Board of Directors from 2002 to 2008 and, from 1992 to 2006, ran the Materials division of Oldcastle. Mr. Hill served as Chairman of the American Road and Transportation Builders Association ("ARTBA") from 2002 to 2004, during congressional consideration of the multi-year transportation bill "SAFETEA-LU." Mr. Hill has been Treasurer of both the National Asphalt Pavement Association and the National Stone Association, and he remains active with ARTBA's Executive Committee. Mr. Hill received a Bachelor of Arts in Economics and History from Duke University and a Masters of Business Administration from Trinity College in Dublin, Ireland.


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              Mr. Hill brings to the Board extensive knowledge of our industry and significant experience in leading companies, as well as his ongoing contributions as the Company's CEO.

Neil P. Simpkins, 52, was elected as a director in August 2009. He is a Senior Managing Director of the Corporate Private Equity Group at Blackstone. Since joining Blackstone in 1998, Mr. Simpkins has led the acquisitions of TRW Automotive, Vanguard Health Systems, Team Health, LLC, Apria Healthcare Group, Summit Materials, Change Healthcare, Inc. and Gates Corporation. Before joining Blackstone, Mr. Simpkins was a Principal at Bain Capital. While at Bain Capital, Mr. Simpkins was involved in the execution of investments in the consumer products, industrial, healthcare and information industries. Prior to joining Bain Capital, Mr. Simpkins was a consultant at Bain & Company in the Asia Pacific region and in London. He currently serves as a Director of Apria Healthcare Group, Gates Corporation, Change Healthcare, Inc. and Team Health Inc. Mr. Simpkins graduated with honors from Oxford University and received a Masters of Business Administration from Harvard Business School.

              Mr. Simpkins brings to the Board significant financial and business experience, including as a Senior Managing Director in the Private Equity Group at Blackstone and Principal at Bain Capital.

Joseph S. Cantie, 54, was appointed by the Board as a director in May 2016, at which time he was also appointed to the Audit Committee. He is the former Executive Vice President and Chief Financial Officer of ZF TRW, a division of ZF Friedrichshafen AG ("ZF"), a global automotive supplier, a position he held from May 2015 until January 2016. He served in similar roles at TRW Automotive Holdings Corp., which was acquired by ZF Industries in May 2015, since 2003. Prior to that time, Mr. Cantie held other executive positions at TRW, which he joined in 1999. From 1996 to 1999, Mr. Cantie served in several executive positions with LucasVarity Plc, including serving as Vice President and Controller. Prior to joining LucasVarity, Mr. Cantie spent 10 years with KPMG. He is currently a director for TopBuild Corp. where he serves on the Audit (Chairman), Compensation and Governance Committees, and for Delphi Technologies PLC where he serves on the Audit (Chairman) and Finance Committees. Mr. Cantie is a certified public accountant and holds a Bachelor of Science degree from the State University of New York at Buffalo.

              Mr. Cantie brings to the Board more than 30 years of financial and operating experience primarily in the industrials sector, which, along with his tenure at a major accounting firm, provide a diversified knowledge base and additional perspectives to the Board.

Corporate Governance

Governance Highlights

CHECKBOX
Independent chairman of the Board
CHECKBOX
Fully independent committees of the Board
CHECKBOX
Regular meetings of independent directors
CHECKBOX
Committee authority to retain independent advisors
CHECKBOX
Stock ownership guidelines for senior executives and directors
CHECKBOX
Prohibitions against pledging and hedging of Summit stock by senior executives and directors
CHECKBOX
Robust code of ethics applicable to all employees and directors

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General

Director Independence Determination.Determination

Under our Corporate Governance Guidelines and the NYSE corporate governance rules for listed companies, a director is not independent unless the Board affirmatively determines that he or she does not have a direct or indirect material relationship with us or any of our subsidiaries. In addition, the director must meet the bright-line test for independence set forth by the NYSE rules. Our Corporate Governance Guidelines define independence in accordance with the independence definition in the current NYSE rules. Our Corporate Governance Guidelines require the Board to review the independence of all directors at least annually. In the event a director has a relationship with the Company that is relevant to his or her independence and is not addressed by the objective tests set forth in the NYSE independence definition, the Board will determine, considering all relevant facts and circumstances, whether such relationship is material.

Our Board has affirmatively determined that each of Messrs. Cantie, Gardner, Lance, Murphy, Simpkins and Wunning and Ms.each of Mss. Cooney, Ellerbusch, Oates-Forney, and Wade is independent, under the guidelines for director independence set forth in the Corporate Governance Guidelines and under all applicable NYSE rules, including with respect to applicable committee membership. Our Board also has determined that (i) each of the members of the Audit Committee, Messrs. Cantie Gardner and Murphy and Ms.Mss. Ellerbusch and Wade, is "independent"“independent” for purposes of Section 10A(m)(3) of the Securities Exchange Act of 1934, as amended (the "Exchange Act"“Exchange Act”).

, and “financially literate” as required by NYSE rules and (ii) each of Messrs. Cantie and Murphy qualify as a “financial expert” as defined by SEC regulations.

In making its independence and financial literacy determinations, the Board considered and reviewed all information known to it, including information identified through annual directors'directors’ questionnaires.

Board Leadership.Leadership
The Board directs and oversees the management of the business and affairs of the Company in a manner consistent with the best interests of the Company. The Board'sBoard’s responsibility is one of oversight, and in performing its oversight role, the Board serves as the ultimate decision-making body of the Company, except for those matters reserved to or shared with our stockholders.

In accordance with the Company’s belief that its long-term success includes being good stewards of the environment, the Board oversees and supports the Company’s initiatives in these areas. In addition, the Board takes pride in supporting the Company’s efforts to offer a safe work environment to its employees and being a good corporate citizen in its local communities. In addition and as discussed below, in 2021, the Company’s Nominating and Corporate Governance Committee was renamed the Governance and Sustainability Committee to emphasize the Company’s commitment to social responsibility.
In accordance with our Corporate Governance Guidelines, the Board selects the Company'sCompany’s Chairman and the Company's CEOCompany’s Chief Executive Officer in any way it considers in the best interests of the Company and, accordingly, does not have a policy on whether the roles of Chairman and CEOChief Executive Officer should be separate or combined and, if separate, whether the Chairman should be selected from the independent directors. We believe that the separation of the Chairman of the Board and CEOChief Executive Officer positions is appropriate corporate governance for us as this time. Accordingly, Mr. Lance serves as the Chairman of the Board while Mr. HillMs. Noonan serves as our CEO.Chief Executive Officer. Our Board believes that this structure best encourages the free and open dialogue of differing views and provides for strong checks and balances.

Executive Sessions and Communications with Directors.2022 NOTICE OF ANNUAL MEETING AND PROXY STATEMENT  The Board's independent directors meet at regularly scheduled executive sessions without management present. Mr. Lance presides at executive sessions of independent directors.SUMMIT MATERIALS | 11

              Stockholders and other interested parties may communicate with the Board by writing to the Chief Legal Officer, Summit Materials, Inc., 1550 Wynkoop Street, 3rd Floor, Denver, Colorado 80202. Written communications may be addressed to the Chairman of the Board, the chairperson of any of the Audit,


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Corporate Governance and Nominating, and Compensation Committees, or to the non-management or independent directors as a group. The Chief Legal Officer will forward such communications to the appropriate party.

Documents

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Risk Oversight.  The Board exercises direct oversight of strategic risks to the Company. The Audit Committee reviews guidelines and policies governing the process by which senior management assesses and manages the Company's exposure to risk, including the Company's major financial and operational risk exposures and the steps management takes to monitor and control such exposures. The Compensation Committee oversees risks relating to the Company's compensation policies and practices. Each committee charged with risk oversight reports to the Board on those matters.

              With respect to cybersecurity risk oversight, our Board and our Audit Committee receive updates from our information technology team to assess the primary cybersecurity risks facing the Company and the measures the Company is taking to mitigate such risks. In addition to such updates, our Board and our Audit Committee receive updates from management as to changes to the Company's cybersecurity risk profile or significant newly identified risks.

Corporate Governance Documents.  Please visit ourOur investor relations website atinvestors.summit-materials.com/govdocs, "Governance“Governance Documents," for” has additional information on our board governance and corporate governance, including:

Board Meetings and Committees

Board Meetings and Committees

The Board meets regularly during the year and holds special meetings and acts by unanimous written consent wheneverwhen circumstances require. During 2017,2021, there were fiveseven (7) meetings of the Board. Each director attended at least 75% of the aggregate of the total number of meetings of the Board (held during the period for which he or she was a director) and the total number of meetings held by all committees on which he or she served (during the periods that he or she served) during 2017.2021. In addition, directors are expected to make every effort to attend any meetings of stockholders. All of our directors attended the 20172021 Annual Meeting of Stockholders.


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The Board has established an Audit Committee, a Human Capital and Compensation Committee, and a NominatingGovernance and Corporate Governance Committee.Sustainability Committee (collectively, the “Committees”). The Committees keep the Board informed of their actions and provide assistance toassist the Board in fulfilling its oversight responsibility to stockholders. The table below provides current membership information as well as meeting information for the last fiscal year.

NameAudit Committee
Human Capital and
Compensation Committee
Governance and
Sustainability Committee
Anne P. Noonan
Howard L. Lance*
Joseph S. Cantie
Anne M. CooneyChair
Susan A. Ellerbusch
John R. MurphyChair
Tamla Oates-Forney
Anne K. Wade
Steven H. WunningChair
Total Meetings in 2021864
*

Name 



​Audit
Committee
 



​Compensation
Committee
 



​Nominating
and
Corporate
Governance
Committee
 

Thomas W. Hill

      

Howard L. Lance*

  X Chair

Joseph S. Cantie

 X  

Ted A. Gardner

 X X 

John R. Murphy

 Chair  X

Neil P. Simpkins

  Chair X

Anne K. Wade

 X  

Steven H. Wunning

  X X

Total Meetings in 2017

 6 4 4

*
Denotes independent chairmanIndependent Chairman of the Board
Board.

The functions performed by these Committees, which are set forth in more detail in their charters, are summarized below.

Audit Committee

Our Audit Committee consists of Messrs. Murphy and Cantie and GardnerMss. Ellerbusch and Ms. Wade, with
Mr. Murphy serving as chair.

Our Audit Committee is responsible for, among other things:


selecting and hiring our independent registered public accounting firm, and approving the audit and non-audit services to be performed by our independent registered public accounting firm;


assisting the Board in evaluating the qualifications, performance and independence of our independent registered public accounting firm;


assisting the Board in monitoring the quality and integrity of our financial statements and our accounting and financial reporting;


assisting the Board in monitoring our compliance with legal and regulatory requirements;

oversee the Company’s environmental, social and governance (“ESG”) reporting and disclosures (quantitative and qualitative) and related processes and controls, including conformity to the Company’s ESG strategy;

reviewing the adequacy and effectiveness of our internal control over financial reporting;

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statement;


review and discuss with management and our independent registered public accounting firm our guidelines and policies with respect to risk assessment and risk management, including the major financial risk exposures and the steps management has taken to monitor and control such exposures; and

review our information technology security controls with our Head of Information Technology and evaluate the adequacy of our information technology security program, compliance and controls with the Head of Information Technology.
Audit Committee Member Independence; Financial Literacy; Financial Expert

Audit Committee Member Independence; Financial Literacy; Financial Expert


Independent under NYSE
governance standards
and
Rule 10A-3 of Exchange
Act
Financially Literate
Financially
Literate
Audit Committee
Financial Expert
John R. Murphy (Chair)
Joseph S. Cantie
Ted A. Gardner
Susan A. Ellerbusch
Anne K. Wade
Human Capital and Compensation Committee

In 2021, the Company’s Compensation Committee

was renamed the Human Capital and Compensation Committee to emphasize the Company’s commitment to (i) diversity, equity, and inclusion, (ii) talent management, and (iii) fostering employee engagement and strengthening the Company’s culture. Our Human Capital and Compensation Committee consists of Messrs. Simpkins,Wunning and Lance Gardner and Wunning,Mss. Cooney and Oates-Forney, with Mr. SimpkinsWunning serving as chair.

Our Human Capital and Compensation Committee is responsible for, among other things:


reviewing and approving or making recommendations to the Board with respect to corporate goals and objectives relevant to the compensation of our Chief Executive Officer, evaluating his/her performance in light of those goals and objectives and determining and approving his/her compensation level based on such evaluation;


reviewing and approving, or making recommendations to the Board with respect to, the compensation of our other executive officers, including annual base salary, bonus, equity-based incentives and other benefits;


reviewing and recommending the compensation of our directors;


reviewing and discussing annually with management our "Compensation“Compensation Discussion and Analysis"Analysis” disclosure required by SEC rules;

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plans;

review, periodically, the Company’s (i) talent management strategies, such as the Company’s recruitment, development, promotion and retention programs; (ii) diversity and inclusion within the Company; and (iii) employee engagement and company culture;

report to the Board with respect to the Company’s human capital management; and

reviewing and discussing with our Chief Executive Officer the Company’s succession plans for key positions at the senior officer level, including the qualifications, experience, and development priorities for these individuals.
Governance and Sustainability Committee

In 2021, the Company’s Nominating and Corporate Governance Committee

was renamed the Governance and Sustainability Committee to emphasize the Company’s commitment to (i) being socially responsible and aligning such responsibility with the Company’s overall business strategy and (ii) implementing policies and initiatives relating to the environment with respect to energy management, climate change, and sustainability. Our NominatingGovernance and Corporate GovernanceSustainability Committee consists of Messrs. Lance, Murphy,
Simpkins and Wunning and Ms. Cooney, with Mr. LanceMs. Cooney serving as chair.

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Our NominatingGovernance and Corporate GovernanceSustainability Committee is responsible for, among other things:


assisting our Board in identifying prospective director nominees and recommending nominees to the Board;


overseeing the annual evaluation of management;

overseeing the annual evaluation of the Board and management;in conjunction with our Chairman’s regular informal interviews with our current directors to ensure the Board is functioning properly;


reviewing and advising the Board on developments in corporate governance practices;


developing and recommending a set of corporate governance guidelines; and


recommending members for each committee of our Board.

Board; and


overseeing the Company’s approach to social responsibility and policies and initiatives related thereto.
Director Nominations
Director Nominations

The NominatingGovernance and Corporate GovernanceSustainability Committee identifies individuals believed to be qualified as candidates to serve on the Board and selects, or recommends that the Board select, the nominees for all directorships to be filled by the Board or by our stockholders at an annual or special meeting.

In identifying candidates for membership on the Board, the Committee takes into account all factors it considers appropriate, which may include:


individual qualifications, including strength of character, mature judgment, familiarity with the Company'sCompany’s business and industry, independence of thought and an ability to work collegially; and


all other factors the Committee considers appropriate, which may include age, diversity of background, existing commitments to other businesses, potential conflicts of interest with other pursuits, legal considerations such as antitrust issues, corporate governance background, various and relevant career experience, relevant technical skills, relevant business or government acumen, financial and accounting background, executive compensation background and the size, composition and combined expertise of the existing Board.

Although the NominatingGovernance and Corporate GovernanceSustainability Committee considers diversity in all its forms, including diversity of viewpoints, background and experiences, the Company does not have a formal diversity policy. The Board is proud of the gender diversity it has been able to accomplish over the last few years, which has resulted in the Board being comprised of 56% females and 44% males. In addition, the Board made strides in 2021 in other forms of diversity, including racial and ethnic diversity, in connection with the appointment of Ms. Oates-Forney, who identifies as African American.
The Committee also


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may consider the extent to which the candidate would fill a present need on the Board. When evaluating whether to re-nominate existing directors, the Committee considers matters relating to the retirement of current directors, as well as the performance of such directors.

The NominatingGovernance and Corporate GovernanceSustainability Committee evaluates director candidates recommended by stockholders on the same basis as it considers other nominees. Any recommendation submitted to the Chief Legal Officer and Secretary should be in writing and should include any supporting material the stockholder considers appropriate in support of that recommendation, but must include information that would be required under the rules of the SEC to be included in a proxy statement soliciting proxies for the election of such candidate and the written consent of the candidate to serve as one of our directors, if elected. Stockholders wishing to propose a candidate for consideration may do so by submitting the above information to the attention of the Chief Legal Officer and Secretary, Summit Materials, Inc., 1550 Wynkoop Street, 3rd Floor, Denver, Colorado 80202. All recommendations for nomination received by the Chief Legal Officer and Secretary that satisfy the requirements of our Second Amended and Restated Bylaws (the "Bylaws"“Bylaws”) relating to such director nominations will be presented to the NominatingGovernance and Corporate GovernanceSustainability Committee for its consideration. Please see the section entitled "Proposals of Stockholders"“Future Shareholder Proposals and Nominations” for information regarding the advance notice provisions applicable to stockholder director nominations set forth in our Bylaws.

Compensation Committee Interlocks and Insider Participation

Compensation Committee Interlocks and Insider Participation

During 2017,2021, the members of the Human Capital and Compensation Committee were Messrs. Simpkins,Wunning and Lance Gardner and Wunning,Mss. Cooney and Oates-Forney (beginning in May 2021), none of whom was, during the fiscal year, an officer or employee of the Company and none of whom has ever served as an officer of the Company. During 2017,2021, none of our executive officers served as a director or member of the compensation committee (or other committee serving an equivalent function) of any other entity whose executive officers served on our Human Capital and Compensation Committee or the Board.

Code of Ethics

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              Our



Board Operations
The Board believes that the practices it follows and the guidelines it adopts governing how it operates set an important tone at the top. Among other things the Board:

meets regularly;

meets periodically in executive session of its independent directors;

has the authority to retain independent advisors;

enables directors to have access to management;

limits the number of public company boards on which directors may serve;

expects its members as well as the Company’s executives to satisfy the stock ownership guidelines; and

prohibits its members and the Company’s executives from taking specified hedging and pledging actions with the Company’s stock.
Executive Sessions and Communications with Directors
The Board’s independent directors meet at regularly scheduled executive sessions without management present. Mr. Lance presides at executive sessions of independent directors.
Stockholders and other interested parties may communicate with the Board by writing to the Chief Legal Officer and Secretary, Summit Materials, Inc., 1550 Wynkoop Street, 3rd Floor, Denver, Colorado 80202. Written communications may be addressed to the Chairman of the Board, the chairperson of any of the Audit, Governance and Sustainability, and Human Capital and Compensation Committees, or to the non-management or independent directors as a group. The Chief Legal Officer will forward such communications to the appropriate party.
Risk Oversight
The Board exercises direct oversight of strategic risks to the Company. The Audit Committee reviews guidelines and policies governing the process by which senior management assesses and manages the Company’s exposure to risk, including the Company’s major financial and operational risk exposures and the steps management takes to monitor and control such exposures. The Human Capital and Compensation Committee oversees risks relating to the Company’s compensation and human capital management policies and practices. Each committee charged with risk oversight reports to the Board on those matters.
Cybersecurity Oversight
With respect to cybersecurity risk oversight, our Board and our Audit Committee receive updates from our information technology team to assess the primary cybersecurity risks facing the Company and the measures the Company is taking to mitigate such risks. In addition to such updates, our Board and our Audit Committee receive updates from management as to changes to the Company’s cybersecurity risk profile or significant newly identified risks.
ESG Oversight
The Company recognizes that ESG performance is essential to the Company’s long-term success and is an important issue to many of its stockholders. As a result, the Company has implemented the following oversight structure to ensure that the Company’s performance in these areas is monitored appropriately:
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[MISSING IMAGE: tm223385d2-fc_esgover4c.jpg]
In light of the importance of environmental and climate change matters to the Company, its shareholders, communities, customers, and employees, and the associated risks the Company faces, the full Board oversees environmental risk factors and receives regular updates from management and the Company’s sustainability team on the Company’s environmental risk profile and key risk mitigating initiatives. The Company’s management functions involved in overseeing and managing climate risk include, but are not limited to, safety, sustainability, finance and internal audit, and legal. Furthermore, each of the Company’s operations has personnel responsible for maintaining compliance with environmental rules and regulations.
In addition, the Company views sustainability as one of its core values and takes its responsibilities to the lands it operates on seriously. The Company has a dedicated Enterprise Risk Committee (the “ERC”) that continually identifies and evaluates environmental and other risks, including the Company’s compliance with environmental rules and regulations. The committee reports to the full Board. The ERC undertakes regular, systematized review of the environmental risks affecting the Company, including those associated with climate change, that may affect the Company’s businesses and also meets with key leaders in the Company’s operations to identify and address such risks.
The Company has established an Environmental Management System (the “EMS”) called eVue to facilitate its ongoing compliance with environmental rules and regulations. The Company implemented this system across its operations in 2021.
With respect to abnormal weather and other physical effects of climate change, to which, as an outdoor business, the Company is acutely attuned, the Company is seeking to monitor and reduce its contribution to climate change. The Company’s efforts include, but are not limited to, the following:

Establishing clear 2030 and 2050 targets for carbon emissions reductions, including a strategy for achieving net zero emissions by 2050, land use improvement, and social impact;
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Reporting on its sustainability progress annually under the SASB Construction Materials Framework;

Aligning with the United Nations Sustainable Development Goals to guide and influence the Company’s programs and reporting;

Membership in the UN Global Compact;

Recycling of hazardous waste, and use of such waste as an alternative fuel source to power the Company’s cement plants;

Use of hybrid vehicles and equipment;

Use of recycled materials, including recycled asphalt and recycled concrete;

Managing and tracking the Company’s fleet to optimize fuel efficiency and reduce unnecessary consumption;

Managing and mitigating the Company’s waste;

Promoting progressive reclamation and biodiversity focused actions; and

Tracking and managing the Company’s water use, with a focus on areas of water scarcity.
The Company also continues to comprehensively focus on its energy inputs, CO2 and other pollutant emissions from its cement plants. From an energy use standpoint, the Company’s alternative fuel usage rate of 35% to 40% at its cement plants is notable in comparison to the average U.S. industry rate of 25% as reported by the U.S. Environmental Protection Agency in 2008. The Company has made advancements in recent years to (i) accept more diverse materials at its hazardous waste recycling business, (ii) increase its alternative fuel use, and (iii) divert thousands of pounds of waste from landfills. The Company has also developed a long-term strategy to address its CO2 emissions from its cement operations that are fully discussed in its 2021 sustainability report.
With respect to emissions impacts, in 2021 the Company completed a comprehensive review of the Company’s greenhouse gas (“GHG”) emissions reporting capabilities across all of the Company’s operations for 2020. This assessment focused on Scope 1 and Scope 2 emissions, which represent emissions from direct operations and indirect electricity purchases, respectively.
Now that the Company has implemented the appropriate reporting framework and controls, the Company has been able to establish goals related to emissions and other factors contributing to climate change. As the Company systematizes its approach to mitigating its climate impact, it will continue to pursue and expand upon the beneficial initiatives it is already implementing, such as the use of hybrid vehicles, a robust recycling and waste program, and sourcing alternative fuels to power its operations.
The Company also seeks to carry out progressive reclamation whenever possible, and it believes in the protection and restoration of areas of high biodiversity value. In 2014, the Company established a partnership with the Wildlife Habitat Council (“WHC”). We currently have seven sites certified by the WHC, covering approximately 2,300 acres across the country. In 2021, our Davenport, Iowa Cement Plant’s Wildlife Restoration Area was awarded Gold Tier WHC Conversation Certification by the WHC. In addition, our reclamation efforts in Kansas, having been awarded the Governor’s Mined Land Reclamation Award by the Kansas Department of Transportation, are an indicator of the Company’s values in action. We remain focused on exploring new, innovative ways in which the Company can meaningfully reduce the environmental impact where we operate and are wholly in support of achieving carbon neutrality by 2050.
Finally, the Company values the communities in which it operates and offers engagement through STEM education programs to enhance local education programs, encourage transparency and outreach.
Code of Ethics
The Company’s Code of Business Conduct and Ethics applies to all of ourits officers, directors and employees, including ourits principal executive officer, principal financial officer and principal accounting officer, or persons performing similar functions and is posted on our website. OurThe Company’s Code of Business Conduct and Ethics is a "code“code of ethics," as defined in Item 406(b) of Regulation S-K. WeThe Company will make any legally required disclosures regarding amendments to, or waivers of, provisions of our Code of Business Conduct and Ethics on ourits website.
Short Sales and Hedging Policy
The information containedCompany’s Securities Trading Policy prohibits directors, officers, and employees (“Summit Materials Personnel”), family members of Summit Materials Personnel and trusts, corporations and other entities controlled by any such persons (collectively, “Insiders”) from trading in options, warrants, puts and calls or similar instruments on the Company’s securities or accessible from, our websiteselling such securities “short” ​(i.e., selling stock that is not part of this Proxy Statement by referenceowned and borrowing the shares to make delivery). In addition, Summit Materials Personnel are prohibited under the Securities Trading Policy from engaging in any transactions (including variable forward contracts, equity swaps, collars and exchange funds) that are designed to hedge or otherwise.


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ITEM 2—RATIFICATION OF APPOINTMENT OF KPMG LLP

              Underoffset any decrease in the rules and regulationsmarket value of the SEC,Company’s equity securities.

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Director Compensation
In 2021, all of the NYSE andCompany’s non-employee directors received annual cash compensation of $100,000. The independent chairperson of the Public Company Accounting Oversight Board (the "PCAOB"),received an additional $150,000 in cash compensation. The respective chairpersons of the Audit Committee, Human Capital and Compensation Committee and Governance and Sustainability Committee (unless such chairperson is directly responsiblealso the chairperson of the Board) received an additional $15,000, $10,000 and $10,000, respectively. Directors who were not employed by us may also receive compensation, from time to time, for service on any special committees of the appointment, compensation, retention and oversight of our independent registered public accounting firm. Board. The Company reimburses its directors for any reasonable expenses incurred by them in connection with services provided in such capacity.
In addition, the Audit Committee considers the independence of our independent registered public accounting firm and participates in the selectionduring 2021, all of the independent registered public accounting firm's lead engagement partner. The Audit Committee has appointed, and, as a matterCompany’s non-employee directors received an annual award of good corporate governance, is requesting ratification by our stockholdersrestricted stock units (“RSUs”) valued at $125,000, which amount differs from the grant date fair value of the appointmentRSUs. A grant of 4,374 RSUs was made to each of Messrs. Lance, Cantie, Murphy, and Wunning and Mss. Cooney, Ellerbusch, and Wade on March 30, 2021. A grant of 4,054 RSUs was made to Ms. Oates-Forney when she joined the registered public accounting firm of KPMG to serve as independent registered public accounting firm forBoard on May 19, 2021. The RSUs were granted under the fiscal year ending December 29, 2018. KPMG has served as our independent registered public accounting firm since 2012.

              The BoardSummit Materials, Inc. Amended and Restated 2015 Omnibus Incentive Plan (the “Omnibus Incentive Plan”), and the Audit Committee believe that the continued retention of KPMG as the Company's independent registered public accounting firm is in the best interests of the Company and its stockholders. If stockholders do not ratify the selection of KPMG, the Audit Committee will evaluate the stockholder vote when considering the selection of a registered public accounting firm for the audit engagement for the 2018 fiscal year. In addition, even if stockholders ratify the selection of KPMG as independent registered public accounting firm, the Audit Committee may nevertheless periodically request proposals from the major registered public accounting firms and as a result of such process may select KPMG or another registered public accounting firm as our independent registered public accounting firm.

THE BOARD RECOMMENDS A VOTE "FOR" RATIFICATION OF THE APPOINTMENT OF KPMG AS OUR INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM FOR THE FISCAL YEAR ENDING DECEMBER 29, 2018.


INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

              Representatives of KPMGterms thereof are expected to attend the Annual Meeting and will have an opportunity to make a statement and to respond to appropriate questions from stockholders.

              Consistent with SEC and PCAOB requirements regarding auditor independence, the Audit Committee has responsibility for appointing, setting compensation for and overseeing the work of, the independent registered public accounting firm. In recognition of this responsibility, the Audit Committee has established a policy to pre-approve all audit and permissible non-audit services provided by the independent registered public accounting firm.

              Prior to engagement of the independent registered public accounting firm for the next year's audit, management will submit to the Audit Committee for approval a list of services and related fees expected to be rendered during that year within each of the following four categories of services:

    Audit services include audit work performed on the financial statements and internal control over financial reporting, as well as work that generally only the independent registered public accounting firm can reasonably be expected to provide, including comfort letters, statutory audits and discussions surrounding the proper application of financial accounting and/or reporting standards.

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    Audit-Related services are for assurance and related services that are traditionally performed by the independent registered public accounting firm, including due diligence related to mergers and acquisitions, employee benefit plan audits and special procedures required to meet certain regulatory requirements.

    Tax services include all services, except those services specifically related to the financial statements, performed by the independent registered public accounting firm's tax personnel, including tax analysis; assisting with coordination of execution of tax-related activities, primarily in the area of corporate development; supporting other tax-related regulatory requirements; tax planning; and tax compliance and reporting.

    All Other services are those services not captured in the Audit, Audit-Related or Tax categories.

              Prior to engagement, the Audit Committee pre-approves independent registered public accounting firm services within each category and the fees of each category are budgeted. The Audit Committee requires the independent registered public accounting firm and management to report actual fees versus the budget periodically throughout the year by category of service. During the year, circumstances may arise when it may become necessary to engage the independent registered public accounting firm for additional services not contemplated in the original pre-approval categories. In those instances, the Audit Committee requires specific pre-approval before engaging the independent registered public accounting firm.

              The Audit Committee may delegate pre-approval authority to one or more of its members. The member to whom such authority is delegated must report, for informational purposes only, any pre-approval decisions to the Audit Committee at its next scheduled meeting. All of the servicesoutlined in the table below were pre-approvedbelow. Further, the RSU awards are subject to the Company’s incentive clawback policies, as in effect from time to time.

Aon’s Human Capital Solutions Practice, a division of Aon plc (“Aon”), the Company’s independent compensation consultant (the “Independent Compensation Consultant”), performs a comprehensive competitive total compensation review for the Company’s non-employee directors every other year. A competitive total compensation study was performed in November 2020, comparing the Company’s total compensation structure and value to peer companies. The Company is currently competitively positioned. In the years the Independent Compensation Consultant does not perform a comprehensive review, they review broader U.S. market trends with the Human Capital and Compensation Committee.
Award TypeVestingTermination or Change in Control Provisions
RSUsVest on the first anniversary of the date of grant(1)

Death or Disability / By the Company Without Cause: Unvested portion will immediately vest.

Retirement(2) / Declining to Stand for Re-election to Our Board(3): Prorated portion immediately vests; settled at such time as would have been settled according to the original vesting schedule.

Change in Control: Accelerated only if not continued, converted, assumed or replaced by the Company or successor entity.

By the Company For Cause: Vested and unvested portions are forfeited.
(1)
Non-employee directors have the right to defer the settlement of annual awards of RSUs until the earlier of (i) the first business day in a year, specified by the Audit Committee.

director, that is after the date of vesting provided in the RSU award agreement and (ii) a specified period after the director’s service on the Board ends.
(in thousands)
 2017 2016 

Audit Fees(1)

 $3,988 $4,144 

Tax Fees(2)

    4 

Audit-Related Fees

     

All Other Fees

     

Total

 $3,988 $4,148 
(2)

(1)
Represents
“Retirement” is defined in the aggregate fees billed for professional servicesdirector form of RSU award agreement as a director’s resignation from service on our Board (other than due to death or disability or termination by KPMGthe Company without cause), prior to the expiration of his or her term and on or after the date he or she attains age seventy.
(3)
In each case, as of or after the regular annual meeting of stockholders for the auditcalendar year which includes the date of our financial statements, reviews of our quarterly financial statements and services associated with other SEC filings, including registration statements. Fees relatedgrant.
Director Compensation Table
The table below summarizes the compensation paid to registration statements totaled $115,000 in 2017 and $598,000 in 2016.
(2)
Represents the aggregate fees billed for professional services by KPMG in connection with routine tax compliance, general tax consulting services and services related to state tax audits. Tax fees related to registration statements totaled $4,000 in 2016.

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AUDIT COMMITTEE REPORT

              The Audit Committee reviews the Company's financial reporting process on behalf of the Board. Management has the primary responsibility for establishing and maintaining adequate internal control over financial reporting, for preparing the financial statements, and for the reporting process. The Audit Committee members do not serve as professional accountants or auditors, and their functions are not intended to duplicate or to certify the activities of management and the independent registered public accounting firm. The Company's independent registered public accounting firm is engaged to audit and report on the conformity of the Company's financial statements to accounting principles generally accepted in the United States and the effectiveness of the Company's internal control over financial reporting.

              In this context, the Audit Committee reviewed and discussed with management and the independent registered public accounting firm the audited financial statementsnon-employee directors for the year ended December 30, 2017 (the "Audited Financial Statements")January 1, 2022.

Name
Fees Earned or
Paid in Cash
Stock Awards(1)(2)Total Compensation
Howard L. Lance$250,000$129,033$379,033
Joseph S. Cantie$100,000$129,033$229,033
Anne M. Cooney$110,000$129,033$239,033
Susan A. Ellerbusch$100,000$129,033$229,033
John R. Murphy$115,000$129,033$244,033
Tamla Oates-Forney$100,000$128,998$228,998
Anne K. Wade$100,000$129,033$229,033
Steven H. Wunning$110,000$129,033$239,033
(1)
The amounts reported in the Stock Awards column reflect the aggregate grant date fair value of RSUs granted in fiscal 2021, computed in accordance with ASC 718, utilizing the assumptions discussed in Note 13, Stock-Based Compensation, management's assessment of the effectiveness of the Company's internal control overto our audited consolidated financial reporting, and the independent registered public accounting firm's evaluation of the Company's system of internal control over financial reporting. The Audit Committee has discussed with the independent registered public accounting firm the matters required to be discussed by Public Company Accounting Oversight Board (the "PCAOB") Auditing Standard No. 1301,Communications with Audit Committees. In addition, the Audit Committee has received the written disclosures and the letter from the independent registered public accounting firm required by applicable requirements of the PCAOB regarding the independent registered public accounting firm's communications with the Audit Committee concerning independence, and has discussed with the independent registered public accounting firm its independence.

              Based upon the reviews and discussions referred to above, the Audit Committee recommended to the Board that the Audited Financial Statements bestatements included in the Company's2021 Annual Report on Form 10-K for the year ended December 30, 2017, for filing with the Securities and Exchange Commission.

The Audit Committee



John R. Murphy, Chair
Joseph S. Cantie
Ted A. Gardner
Anne K. Wade

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BENEFICIAL OWNERSHIP OF SHARES

              The following table sets forth the beneficial ownership of shares of our Class A Common Stock and LP Units by (1) each person known to us to beneficially own more than 5% of any class of the outstanding voting securities of the Company, (2)January 1, 2022, each of our non-employee directors (other than Ms. Oates-Forney) held 4,374 RSUs and Ms. Oates-Forney held 4,054 RSUs. As noted above, our targeted equity value is $125,000 annually. The value in this column does not necessarily match the $125,000 target because we calculate

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the number of RSUs to grant based on the 20-day average closing stock price immediately preceding the grant date in order to mitigate the potential impact of short-term stock price swings on our equity grants.
(2)
We did not make any option awards to directors in fiscal 2021. As of January 1, 2022, Messrs. Lance and Murphy held 81,611 and 10,220 time-vesting Leverage Restoration Options, respectively. Time-vesting Leverage Restoration Options held by our directors have the same vesting terms as those held by our NEOs and (3) all of our directors and executive officers as a group. Percentage of beneficial ownership of (1) Class A Common Stock is based upon 111,228,077 shares issued and outstanding and (2) LP Units is based upon 114,813,591 LP Units outstanding (including 111,228,077 LP Units held by the Company),described in each case as of March 19, 2018. Percentage of combined voting power is based upon 114,560,343 votes represented by outstanding securities, consisting of (1) 111,228,077 shares of Class A Common Stock issued and outstanding and (2) 3,332,266 LP Units outstanding and eligible to vote, excluding LP Units held by the Company, in each case as of March 19, 2018. The Company is the general partner of Summit Materials Holdings L.P. ("Summit Holdings"), which indirectly owns 100% of the limited liability interests of Summit Materials, LLC ("Summit LLC"). Except as otherwise noted, (i) the information is as of March 19, 2018, and (ii) the address of each beneficial owner is c/o Summit Materials, Inc., 1550 Wynkoop Street, 3rd floor, Denver, Colorado 80202. Beneficial ownership is determined in accordance with the rules and regulations of the SEC.

 
 Class A Common Stock(1)��LP Units(1) Combined Voting Power(2) 
Name of Beneficial
 Number Percent Number Percent Number Percent 
Owner
 

Vanguard Group Inc.(3)

  9,156,810  8.2%     9,156,810  8.0%

FMR LLC(4)

  7,496,349  6.7%     7,496,349  6.5%

BlackRock, Inc.(5)

  7,056,682  6.3%     7,056,682  6.2%

Prudential Financial, Inc./Jennison Associates LLC(6)

  5,823,387  5.2%     5,823,387  5.1%

Thomas W. Hill(7)

  403,400  *  619,425  *  1,022,825  * 

Howard L. Lance(8)(9)

  195,559  *  135,772  *  331,331  * 

Joseph S. Cantie(9)(10)

  8,810  *      8,810  * 

Ted A. Gardner(9)(11)

  38,009  *  162,752  *  200,761  * 

John R. Murphy(9)(12)

  18,974  *  4,274  *  23,248  * 

Neil P. Simpkins(9)(13)

  4,098  *      4,098  * 

Anne K. Wade(9)(14)

  10,601  *      10,601  * 

Steven H. Wunning(9)(15)

  8,787  *      8,787  * 

Michael J. Brady(16)

  330,454  *  283,649  *  614,103  * 

Brian J. Harris(17)

  327,490  *  332,699  *  660,189  * 

M. Shane Evans(18)

  203,113  *  78,525  *  281,638  * 

Douglas C. Rauh(19)

  3,644  *      3,644  * 

All Directors and Executive Officers as a Group (15 persons)(20)

  1,683,414  1.5% 1,764,509  1.5% 3,447,923  3.0%

*
Less than 1%.

(1)
Subject to the terms of the Exchange Agreement, LP Units are exchangeable for shares of our Class A Common Stock on a one-for-one basis. See "Certain Relationships and Related Person Transactions—Exchange Agreement." Beneficial ownership of LP Units reflected in this table is not reflected as beneficial ownership of shares of our Class A Common Stock for which such units may be exchanged. See "Executive Compensation—Narrative“Narrative Disclosure to Summary Compensation Table and Grants of Plan-Based Awards Table—Pre-IPO Long-Term Incentive Awards" for a description of the LP Units.
(2)
Represents percentage of voting power of the Class A Common Stock and Class B Common Stock of the Company voting together as a single class and gives effectAwards (Value From Modifications to voting power of the Class B Common Stock, excluding options that are vested or will vest within 60 days as well as outstanding warrants. The Class B Common Stock provides holders who also hold LP Units with a number of votes thatEliminate Misalignment Post-IPO).”
2022 NOTICE OF ANNUAL MEETING AND PROXY STATEMENTSUMMIT MATERIALS | 19

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OUR PAY
Our “Say-on-Pay” Resolution Received 98% Support in 2021.
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We believe our executive compensation structure is equal to the aggregate number of LP Units held by such holders. As

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    of March 19, 2018, holders of the LP Units held all of the issued shares of our Class B Common Stock that were outstanding and the total number of votes that were represented by the Class B Common Stock was 3,332,366. In addition to the voting power of the Class B Common Stock conferred to him and the Hill Trust through their ownership of LP Units, Mr. Hill has sole voting power over 2,244,154 votes represented by the Class B Common Stock through revocable proxies granted to him by certain pre-IPO investors that hold LP Units, including members of management. Mr. Hill has no pecuniary interest in the LP Units held by such other LP Unit holders and disclaims any beneficial ownership in such LP Units.

(3)
The number of shares held was obtained from the holder's Schedule 13G/A filing with the SEC dated February 9, 2018, which reports ownership as of December 31, 2017. The Schedule 13G/A filing indicates that the holder, Vanguard Group Inc. ("Vanguard") has sole power to vote or direct the vote of 214,818 shares of our Class A Common Stock, shared power to vote or direct the vote of 19,073 shares of our Class A Common Stock, sole power to dispose or direct the disposition of 8,932,128 shares of our Class A Common Stock, and shared power to dispose or direct the disposition of 224,682 shares of our Class A Common Stock. The address of Vanguardcompetitive, is 100 Vanguard Blvd., Malvern, PA 19355.
(4)
The number of shares held was obtained from the Schedule 13G filing made by FMR LLC ("FMR") and Abigail P. Johnson with the SEC dated February 13, 2018, which reports ownership as of December 31, 2017. Based solely on Schedule 13G jointly filed with the SEC on February 13, 2018 by FMR and Abigail P. Johnson, Abigail P. Johnson is a Director, the Chairman, and the Chief Executive Officer of FMR. Members of the Johnson family, including Abigail P. Johnson, are the predominant owners, directly or through trusts, of 49% of the voting power of FMR. Members of the Johnson family may be deemed to form a controlling group with respect to FMR. Neither FMR nor Abigail P. Johnson has the sole power to vote or direct the voting of the common stock owned directly by the various investment companies ("Fidelity Funds") advised by Fidelity Management & Research Company ("FMR Co."), a wholly owned subsidiary of FMR, which power resides with the Fidelity Funds' Boards of Trustees. FMR Co. carries out the voting of the common stock under written guidelines established by the Fidelity Funds' Boards of Trustees. The Schedule 13G filed made by FMR and Abigail P. Johnson indicates that they have sole power to vote or direct the vote of 161,084 shares of our Class A Common Stock and sole power to dispose or direct the disposition of 7,496,349 shares of our Class A Common Stock. The address of FRM and Abigail P. Johnson is 245 Summer Street, Boston, Massachusetts 02210.
(5)
The number of shares held was obtained from the holder's Schedule 13G filing with the SEC dated January 23, 2018, which reports ownership as of December 31, 2017. The Schedule 13G filing indicates that the holder, BlackRock, Inc. ("BlackRock") had sole power to vote or direct the vote of 6,812,358 shares of our Class A Common Stock and sole power to dispose or to direct the disposition of, 7,056,682 shares of our Class A Common Stock. The address of BlackRock is 55 East 52nd Street, New York, NY 10055.
(6)
The number of shares held was obtained from the Schedule 13G filings made by Prudential Financial, Inc. ("Prudential") and Jennison Associates LLC ("Jennison") with the SEC dated January 19, 2018 and February 6, 2018, respectively, which report ownership as of December 31, 2017. Prudential indirectly owns 100% of equity interests of Jennison and certain other investment funds. As a result, Prudential may be deemed to have the power to exercise or to direct the exercise of such voting and/or dispositive power that Jennison and its other affiliates may have with respect to our Class A Common Stock. The Schedule 13G filed by Jennison indicates it has sole power to vote or direct the vote of 5,810,726 shares of our Class A Common Stock and shared power to dispose or direct the disposition of 5,810,726 shares of our Class A Common Stock. The Schedule 13G filed by Prudential indicates it beneficially owns 5,823,387 shares of our Class A Common Stock, consisting of the 5,810,726 shares held by Jennison and 12,661 shares held by Quantitative Management Associates LLC (with respect to which it has sole power to vote or direct the vote of 50,166 shares of our Class A Common Stock, shared power to vote or direct the vote 5,773,221 shares of our Class A Common Stock, sole power to dispose or direct the disposition of 50,166 shares of our Class A Common Stock, and shared power to dispose or direct the disposition of 5,773,221 shares of our Class A Common Stock). The address of Prudential is 751 Broad Street, Newark, NJ 07102. The address of Jennison is 466 Lexington Avenue, New York, NY 10017.
(7)
Includes (i) 231,670 options, including Leverage Restoration Options (as described in "Executive Compensation—Narrative Disclosure to Summary Compensation Table and Grants of Plan-Based Awards Table—Pre-IPO Long-Term Incentive Awards") issued to Mr. Hill that are vested or will vest within 60 days, (ii) 29,463 warrants issued to Mr. Hill at the time of our IPO, (iii) 141,902 shares of our Class A Common Stock owned by Mr. Hill, (iv) 592,456 LP Units held by Mr. Hill, (v) 365 shares of our Class A Common Stock held by the Hill Trust, a trust for which Mr. Hill's spouse serves as trustee and as to which Mr. Hill could be deemed to have beneficial ownership, and (vi) 26,969 LP Units held by The Hill Trust. See "Certain Relationships and Related Person Transactions—Warrant Issuances." Amounts for Mr. Hill do not include 2,244,154 LP Units for which Mr. Hill has sole voting power through revocable proxies granted to him. See footnote (2).
(8)
Includes (i) 184,958 options issued to Mr. Lance that are vested or will vest within 60 days, (ii) 135,772 LP Units held by Mr. Lance, and (iii) 10,601 shares of our Class A Common Stock held by Mr. Lance.

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(9)
Does not include unvested RSUs held by our non-employee directors in connection with their service as directors.
(10)
Includes 8,810 shares of our Class A Common Stock owned by Mr. Cantie.
(11)
Includes (i) 10,601 shares of our Class A Common Stock held by Mr. Gardner, and (ii) 27,408 warrants and (iii) 162,752 LP Units held by Gardner Family Investments, LLC, a limited liability company controlled by Mr. Gardner. Mr. Gardner has sole voting and dispositive power over such warrants and LP Units.
(12)
Includes (i) 7,665 options issued to Mr. Murphy that are vested or will vest within 60 days, (ii) 4,274 LP Units held by Mr. Murphy and (iii) 11,309 shares of our Class A Common Stock owned by Mr. Murphy.
(13)
Includes 4,098 shares of our Class A Common Stock owned by Mr. Simpkins.
(14)
Includes 10,601 shares of our Class A Common Stock owned by Ms. Wade.
(15)
Includes 8,787 shares of our Class A Common Stock owned by Mr. Wunning.
(16)
Includes (i) 317,497 options issued to Mr. Brady that are vested or will vest within 60 days, (ii) 283,649 LP Units held by Mr. Brady, (iii) 6,105 shares of our Class A Common Stock owned by Mr. Brady, and (iv) 6,852 warrants issued to Mr. Brady at the time of our IPO.
(17)
Includes (i) 199,906 options issued to Mr. Harris that are vested or will vest within 60 days, (ii) 67,584 shares of our Class A Common Stock owned by Mr. Harris, and (iii) 332,699 LP Units and (iv) 60,000 shares of our Class A Common Stock held by The Harris Family 2014 Trust fbo Michael J. Harris and The Harris Family 2014 Trust fbo Cameron I.J. Harris, trusts for which Mr. Harris' spouse serves as trustee and as to which Mr. Harris could be deemed to have beneficial ownership.
(18)
Includes (i) 190,559 options issued to Mr. Evans that are vested or will vest within 60 days, (ii) 78,525 LP Units held by Mr. Evans, and (iii) 12,554 shares of our Class A Common Stock owned by Mr. Evans.
(19)
Includes 3,644 shares of our Class A Common Stock held by Mr. Rauh.
(20)
Includes (i) 1,247,311 options that are vested or will vest within 60 days, (ii) 1,764,509 LP Units, (iii) 63,723 warrants issued at the IPO and (iv) 372,380 shares of our Class A Common Stock.

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              ITEM 3—NONBINDING ADVISORY VOTE ON THE COMPENSATION OF OUR NEOs

              Under the Dodd-Frank Wall Street Reform and Consumer Protection Act (the "Dodd-Frank Act") and Section 14A of the Exchange Act, our stockholders are entitled to vote to approve, on a nonbinding advisory basis, the compensation of our NEOs, as disclosed in this Proxy Statement in accordance with SEC rules. This vote is not intended to address any specific item of compensation, but rather the overall compensation of our NEOs and the philosophy, policies and practices described in this Proxy Statement. The compensation of our NEOs subject to the vote is disclosed in the Compensation Discussion and Analysis, the compensation tables, and the related narrative disclosure contained in this Proxy Statement. As discussed in those disclosures, we believe that our compensation policies and decisions are focused on pay-for-performance principles and are strongly aligned with our stockholders' interests. The compensation of our NEOs is designed to enable us to attractcurrent governance trends and retain talented and experienced executives to lead us successfully in a competitive environment. Accordingly, the Board is asking our stockholders to indicate their support for the compensation of our NEOs as disclosed in this Proxy Statement by casting a nonbinding advisory vote "FOR" the following resolution:

              "RESOLVED, that the compensation paid to our NEOs, as disclosed pursuant to Item 402 of Regulation S-K, including the Compensation Discussion and Analysis, compensation tables, and narrative disclosure, is hereby APPROVED."

              The Compensation Committee continually reviews the Company's performance and governance highlights to evaluate whether the goals of the executive compensation and benefits program are supported and whether such program serves the interests of the Company's stockholders. The Company's 2017 performance and governance practicescontains stockholder-friendly features. These stockholder-friendly features include the following, as discussed in more detail in the Compensation Discussion and Analysis section of this Proxy Statement:

Performance Highlightsfollowing:

Highlights of our 2017 business achievements included the following:

Full-year organic sales volumes of aggregates increased 3.4%.
Full-year organic sales volumes of cement increased 5.8%.
Full-year net income increased 331.2% to $121.83 million.
Full-year operating income increased 42.8% to $220.9 million.
Full-year adjusted EBITDA* increased 17.4% to $435.8 million.

*
See "Reconciliation of Non-GAAP Measure to GAAP" on Annex A.

Corporate Governance Highlights

What We Do (Best Practice)What We Don'tDon’t Do / Don'tDon’t Allow

Separate the roles of Chairman and Chief Executive Officer

No hedging or pledging of Company stock by executives or directors

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Enforce strict insider trading, policies

No change-in-control severance multiple in excess of three times salaryanti-hedging and target bonus

anti-pledging policies

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Set robust stock ownership guidelines for executives and directors

No excise tax gross-ups upon a change in control

Generally provide

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Provide provisions for recoupment ("claw back"(“clawback”) of equity incentive compensation

No re-pricing or in our award agreements and adopted a policy for clawback of annual cash buyout of underwater stock options

bonuses and equity incentive compensation
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Disclose performance goals for incentive programs

No enhanced retirement formulas

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Set a maximum payout limit on our annual and long-term incentive programs for our NEOs

No guaranteed compensation

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Incorporate double-trigger change-in-control provisions that are consistent with market practice

No market timing with granting of equity awards

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Retain an independent compensation consultant that reports directly to the Human Capital and Compensation Committee

Eliminated substantially all perquisites for all NEOs in 2017

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Perform an annual compensation program risk assessment to ensure that the Company'sCompany’s compensation policies and practices are not reasonably likely to have a material adverse effect on the Company

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Strong alignment between pay and company performance
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Annual review of share utilization
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No change-in-control severance multiple in excess of three times salary and target bonus
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No excise tax gross-ups upon a change in control
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No re-pricing or cash buyout of underwater stock options
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No enhanced retirement formulas
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No guaranteed compensation
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No market timing with granting of equity awards
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Substantially no perquisites for our NEOs
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No payment of dividends or dividend equivalents on unvested stock or unearned performance units

              Because the vote to approve the compensation of our NEOs is advisory, it is not binding on the Board or the Company. Nevertheless, the views expressed by our stockholders, whether through this vote or otherwise, are important to management and the Board and, accordingly, the Board and the Compensation Committee intend to consider the results of this vote in making determinations in the future regarding executive compensation arrangements. Nonbinding advisory approval of this proposal requires the vote of the holders of a majority of the voting power of the shares present in person or represented by proxy and entitled to vote on the matter at the Annual Meeting.

THE BOARD RECOMMENDS A VOTE "FOR" THE APPROVAL, ON A
NONBINDING ADVISORY BASIS,20 | SUMMIT MATERIALS
2022 NOTICE OF THE COMPENSATIONANNUAL MEETING AND PROXY STATEMENT


THIS PROXY STATEMENT.

ITEM 2
NONBINDING ADVISORY VOTE ON THE
COMPENSATION OF OUR NEOs
Under the Dodd-Frank Wall Street Reform Consumer Protection Act (the “Dodd-Frank Act”) and Section 14A of the Exchange Act, our stockholders are entitled to vote to approve, on a nonbinding advisory basis, the compensation of our NEOs, as disclosed in this Proxy Statement in accordance with SEC rules. The compensation of our NEOs subject to the vote is disclosed in the Compensation Discussion and Analysis, the compensation tables, and the related narrative disclosure contained in this Proxy Statement. The compensation of our NEOs is designed to enable us to attract and retain talented and experienced executives to lead us successfully in a competitive environment, while ensuring that our executives remain incentivized to accomplish the Company’s long-term business plan. As discussed in this Proxy Statement, the vast majority of each NEO’s pay is at-risk and largely tied to challenging performance goals. We believe that our compensation policies and decisions are strongly aligned with our stockholders’ interests.
The Board is asking our stockholders to indicate their support for the compensation of our NEOs as disclosed in this Proxy Statement by casting a nonbinding advisory vote “FOR” the following resolution:
RESOLVED, that the compensation paid to our NEOs, as disclosed pursuant to Item 402 of Regulation S-K, including the Compensation Discussion and Analysis, compensation tables, and narrative disclosure, is hereby APPROVED.”
Because the vote to approve the compensation of our NEOs is advisory, it is not binding on the Board or the Company. Nevertheless, the views expressed by our stockholders, whether through this vote or otherwise, are important to management and the Board and, accordingly, the Board and the Human Capital and Compensation Committee intend to consider the results of this vote in making determinations in the future regarding executive compensation arrangements, as a part of its robust compensation review and assessment process. Nonbinding advisory approval of this proposal requires the vote of the holders of a majority of the voting power of the shares present in person or represented by proxy and entitled to vote on the matter at the Annual Meeting.
THE BOARD RECOMMENDS A VOTE “FOR” THE APPROVAL,
ON A NONBINDING ADVISORY BASIS, OF THE COMPENSATION
OF OUR NEOs, AS DISCLOSED IN THIS PROXY STATEMENT

2022 NOTICE OF ANNUAL MEETING AND PROXY STATEMENTSUMMIT MATERIALS | 21



ITEM 3
NONBINDING ADVISORY VOTE ON THE
FREQUENCY OF SOLICITATION OF
NONBINDING ADVISORY STOCKHOLDER
APPROVAL OF THE COMPENSATION OF
OUR NEOs
The Dodd-Frank Act and Section 14A of the Exchange Act enable our stockholders, at least once every six years, to indicate their preference regarding how frequently we should solicit a nonbinding advisory vote on the compensation of our NEOs as disclosed in our proxy statement. Accordingly, we are asking our stockholders to indicate whether they would prefer a nonbinding advisory vote every year, every two years, or every three years. Alternatively, stockholders may abstain from casting a vote. After considering the benefits and consequences of each alternative, the Board recommends that the nonbinding advisory vote on the compensation of our NEOs be submitted to our stockholders once every year.
The alternative among one year, two years, or three years (if any) that receives the votes of the holders of a majority of the voting power of the shares present in person or represented by proxy and entitled to vote on the matter at the Annual Meeting will be deemed to be the frequency preferred by our stockholders. While the Board believes that its recommendation is appropriate at this time, our stockholders are not voting to approve or disapprove that recommendation, but are instead being asked to indicate their preferences, on a nonbinding advisory basis, as to whether the nonbinding advisory vote on the approval of the compensation of our NEOs should be held every year, every two years, or every three years. The Board and the Human Capital and Compensation Committee value the opinions of our stockholders in this matter and, to the extent there is any significant vote in favor of one frequency over the other options, even if less than a majority, the Board will consider our stockholders’ concerns and evaluate any appropriate next steps. However, because this vote is advisory and, therefore, not binding on the Board of Directors or the Company, the Board may decide that it is in the best interests of our stockholders that we hold a nonbinding advisory vote on the compensation of our NEOs more or less frequently than the option preferred by our stockholders. The vote will not be construed to create or imply any change or addition to the fiduciary duties of the Compensation Committee, the Board, or the Company.
THE BOARD RECOMMENDS A VOTE FOR “ONE YEAR” WITH RESPECT TO
HOW FREQUENTLY A NONBINDING ADVISORY VOTE ON THE COMPENSATION OF THE COMPANY’S NEOS SHOULD OCCUR
22 | SUMMIT MATERIALS

COMPENSATION COMMITTEE REPORT2022 NOTICE OF ANNUAL MEETING AND PROXY STATEMENT




Compensation Committee Report
The Human Capital and Compensation Committee has reviewed and discussed the Compensation Discussion and Analysis with management. Based on this review and discussion, the Human Capital and Compensation Committee recommended to the Board that the Compensation Discussion and Analysis be included (incorporated by reference) in the Company’s Annual Report on Form 10-K for the fiscal year ended January 1, 2022 and in this Proxy Statement.
Submitted by the Human Capital and Compensation Committee of the Board.
Steven H. Wunning, Chair
Anne M. Cooney
Tamla Oates-Forney
Howard L. Lance
2022 NOTICE OF ANNUAL MEETING AND PROXY STATEMENTSUMMIT MATERIALS | 23


Compensation Discussion and Analysis with management. Based on this review and discussion, the Compensation Committee recommended to the Board that the Compensation Discussion and Analysis be included (incorporated by reference) in the Company's Annual Report on Form 10-K for the fiscal year ended December 30, 2017 and in this Proxy Statement.

              Submitted by the Compensation Committee of the Board.

    Neil P. Simpkins, Chair
    Ted A. Gardner
    Howard L. Lance
    Steven H. Wunning

Analysis—Executive Summary
Named Executive Officers

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EXECUTIVE COMPENSATION

Executive Summary

The following Compensation Discussion and Analysis ("(“CD&A"&A”) describes our 20172021 executive compensation structure, earned by or paid to the following named executive officers ("NEOs"(“NEOs”).

:
Anne P. Noonan
Thomas W. HillPresident and Chief Executive Officer
Michael J. BradyExecutive Vice President and Chief Business Development Officer
Brian J. HarrisExecutive Vice President and Chief Financial Officer
M. Shane EvansKarli S. Anderson(1)Executive Vice President, Chief Environmental, Social & Governance Officer and West Division PresidentHead of Investor Relations
Douglas C. RauhChristopher B. Gaskill(2)FormerExecutive Vice President, Chief Legal Officer and Secretary
Deon MacMillan(3)Executive Vice President, Chief People Officer and Head of Corporate Communications
(1)
Ms. Anderson was promoted to Executive Vice President, Chief Environmental, Social & Governance Officer and Head of Investor Relations in March 2021.
(2)
Mr. Gaskill was promoted to Executive Vice President, Chief Legal Officer and Secretary in March 2021.
(3)
Ms. MacMillan joined the Company as its Executive Vice President, Chief People Officer and Head of Corporate Communications in March 2021.
2021 Financial Highlights
The Company launched its Elevate Summit strategy in March 2021. Elevate Summit has multiple aspects and horizons:

become the market leader in advantaged exurban & markets where we invest and grow for a #1 or #2 market position;

utilize asset light partnerships to maximize the pull through and reduce volatility in select markets while enhancing EBITDA margin and return on invested capital (“ROIC”);

become the most socially responsible integrated construction materials solution provider; and

develop innovative solutions to address tomorrow’s challenges.
Within these key themes, we specifically targeted a reduction in leverage below 3X EBITDA, increase in margins and optimization of our portfolio.
This allowed the Company to achieve the following in 2021:

Strong net revenue gains in our aggregates, ready-mix concrete, and cement lines of business.

Net revenue growth across all three reporting Segments, despite 8 divestitures during 2021, which resulted in cash proceeds received of $128 million.

Net income attributable to Summit of $152.2 million, adjusted cash gross profit of $673.3 million (a non-GAAP financial measure) of adjusted EBITDA of $520.1 million (a non-GAAP financial measure) and free cash flow of $161.6 million (a non-GAAP financial measure).

The Company focused on sustainable growth with investments in greenfields while advancing strategic divestitures that enhanced our market leadership.

The Company repaid $300 million of Senior Notes due 2025 using existing cash on hand.

Reduced our leverage ratio to 2.5X Net Debt to Adjusted EBITDA (a non-GAAP financial measure) at year end 2021, the lowest debt ratio in the Company’s history.
*
See “Reconciliation of Non-GAAP Measures to GAAP” on Annex A.
24 | SUMMIT MATERIALS2022 NOTICE OF ANNUAL MEETING AND PROXY STATEMENT


Compensation Discussion and Analysis—What We Paid
In 2021, our executive compensation structure consisted of four primary components: base salary; annual cash incentives; long-term equity incentives and traditional health/welfare plans. We provide substantially no perquisites to our NEOs.
2021 Compensation at a Glance
Pay ElementDescription2021 Payout / Changes
FixedBase SalaryFixed pay to recruit and retain executives
Base salaries increased for our NEOs as follows: Ms. Noonan and Mr. Harris by 3%, which was our standard merit increase for corporate employees in 2021, consistent with competitive market practices, Ms. Anderson by 40%, and Mr. Gaskill by 28%.
The base salary increases for Ms. Anderson and Mr. Gaskill reflected our standard merit increase and additional increases in connection with their promotions to Executive Vice President and Chiefto reflect competitive market practices for similar roles and responsibilities. Ms. Anderson’s increase was approved in November 2021 and was retroactive as of March 29, 2021.
VariableAnnual Cash Bonus
Annual cash incentives based on rigorous financial, operational and personal goals measured over one year:

50% Adjusted EBITDA

20% Operating OfficerCash Flows

10% Safety

20% Personal Objectives
For 2021, our NEO target Annual Cash Bonus opportunities were (i) the same as 2020 for Ms. Noonan and Mr. Harris and (ii) increased for Ms. Anderson and Mr. Gaskill in connection with their promotions to Executive Vice President and to reflect competitive market practice for their new roles.
Each of our NEOs earned annual cash bonuses as set forth below in “Elements of Pay: Annual Cash Incentives—2021 Actual Performance and Payouts.”
Long-Term Equity Incentives
Annual long-term equity awards align executives’ interests with stockholders.
50% Performance Units

Vest 50% based on three-year relative total shareholder return (“TSR”) compared to Materials and Capital Goods Companies (consisting of GICS industry groups 2010 and 1510) from the S&P 400 Midcap Index.

Capped at target if absolute TSR is negative.

Vest 50% based on the average three-year ROIC performance for three successive one-year periods.

Maximum payout is capped at 200% of target.

Grants are based in the Company’s Class A Common Stock.
For 2021, our NEO target Long-Term Equity Incentive opportunities were (i) the same as 2020 for Ms. Noonan and Mr. Harris and (ii) increased for Ms. Anderson and Mr. Gaskill in connection with their promotions to Executive Vice President and to reflect competitive market practice for their new roles.
For the performance period January 1, 2019 through December 31, 2021, our Relative TSR ranked at the 97th percentile, resulting in a payout equal to 200% of target.
Return on invested capital (ROIC) was added to our program structure in 2020. We believe ROIC performance has a direct alignment with share price and stockholders’ interests.
50% RSUs

Vest ratably over 3 years.

Grants are based in the Company’s Class A Common Stock.
OtherTraditional BenefitsExecutive benefits are substantially similar to benefits offered to other employees.No change

2022 NOTICE OF ANNUAL MEETING AND PROXY STATEMENTSUMMIT MATERIALS | 25


Leadership Changes

              In October 2017, the Company announced that Douglas C. Rauh would leave his role as the Company's Executive Vice President

Pay Mix and Chief Operating Officer, effective December 30, 2017. In December 2017, the Company announced that Mr. Rauh entered into an Agreement and Release (the "Agreement and Release") dated December 15, 2017 with Summit Holdings and, solely for certain purposes specified therein, the Company, in connection with his departure from the Company. The terms of the Agreement and Release are described below under "Potential Payments Upon Termination or Change in Control." In January 2018, the Company announced that Karl H. Watson Jr. had been appointed Executive Vice President and Chief Operating Officer of the Company.

Magnitude

Performance Highlights

              Highlights of our 2017 business achievements included the following:

Full-year organic sales volumes of aggregates increased 3.4%.
Full-year organic sales volumes of cement increased 5.8%.
Full-year net income increased 331.2% to $121.83 million.
Full-year operating income increased 42.8% to $220.9 million.
Full-year adjusted EBITDA* increased 17.4% to $435.8 million.

*
See "Reconciliation of Non-GAAP Measure to GAAP" on Annex A.

Pay for Performance

The Human Capital and Compensation Committee designsbelieves that a significant majority of both the executive compensation programChief Executive Officer’s and other NEOs’ pay should be at risk and not guaranteed. Compensation is tied to deliverchallenging performance objectives and this is illustrated in our pay in accordance with corporate, segment, safety and individual performance.mix. A large percentage of total target compensation is at risk through long-term equity awards and annual cash incentive awards. These awards are linked to performance measures that correlate with long-term stockholder value creation. The amounts actually realized by our NEOs with respect to these awards depend on a variety of factors, including the level of attainment of the relevant performance goals and the extent of vesting of performance units and RSUs and the value of our stock when performance units and RSUs vest.

The target values of long-term equity incentive awards used in the charts below differ from the compensation reported in the Summary Compensation Table due to the use of the grant date fair value in the Summary Compensation Table which is calculated in accordance with ASC 718, utilizing the assumptions discussed in our audited consolidated financial statements included in the 2021 Annual Report. The mix of


Table of Contents

total direct compensation at target for 20172021 for our CEOChief Executive Officer and the average of our other NEOs is shown in the charts below.

GRAPHIC

Compensation Discussion and Analysis

[MISSING IMAGE: tm223385d2-pc_ceoneo4c.jpg]

2017 Executive Compensation Structure

              In 2017, our executiveThe Human Capital and Compensation Committee approved the following compensation structure consisted of four primary components: base salary;targets for 2021:

Base SalaryAnnual Bonus Target as % of Base SalaryLong-Term Incentive Target as % of Base Salary
Anne P. Noonan$952,750125%305%
Brian J. Harris$619,03075%155%
Karli S. Anderson$375,00060%125%
Christopher B. Gaskill$420,00060%125%
Deon MacMillan$450,00060%(1)125%(2)
(1)
Pursuant to Ms. MacMillan’s offer letter, her target annual cash incentives; long-term equity incentives;bonus for 2021 was prorated for the period of time in which she was employed by the Company.
(2)
Pursuant to Ms. MacMillan’s offer letter, she received an initial award of RSUs promptly following her start date with a value of $450,000 (100% of base salary) that vest as follows: (i) $150,000 to vest on the grant date, (ii) $175,000 to vest on the first anniversary of the grant date, and traditional health/welfare plans.We eliminated substantially all perquisites(iii) $125,000 to vest on the second anniversary of the grant date. Then, beginning in 2017.

GRAPHIC


Table2022, her annual target award is expected to have a grant date fair value of Contents125% of her annual base salary.

Elements of Pay: Base Salary

The Human Capital and Compensation Committee determines base salaries for the NEOs and other executives based on a number of factors, including but not limited to, the Human Capital and Compensation Committee’s understanding of executive pay practices, individual performance, Company performance and management recommendations (except with respect to the Chief Executive Officer).
Base salaries increased for Ms. Noonan and Mr. Harris by 3%, which was our standard merit increase for corporate employees in 2021, Ms. Anderson by 40%, and Mr. Gaskill by 28%. The base salary increases for Ms. Anderson and Mr. Gaskill reflected our standard merit increase and additional increases in connection with their promotions to Executive Vice President. Ms. Anderson’s base salary increase was approved in November 2021 and was retroactive as of March 29, 2021. These base salaries reflect a thorough review of competitive market data, internal alignment of total compensation opportunity, and are consistent with competitive market data provided by the Independent Compensation Consultant.
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2021 Target Base Salary2020 to 2021 Increase
Anne P. Noonan$952,7503.0%
Brian J. Harris$619,0303.0%
Karli S. Anderson$375,00040%(1)
Christopher B. Gaskill$420,00028%(2)
Deon MacMillan$450,000          NA(3)
(1)
Ms. Anderson was promoted to Executive Vice President, Chief Environmental, Social & Governance Officer and Head of Investor Relations in March 2021.
(2)
Mr. Gaskill was promoted to Executive Vice President, Chief Legal Officer and Secretary in March 2021.
(3)
Ms. MacMillan joined the Company as its Executive Vice President, Chief People Officer and Head of Corporate Communications in March 2021.
Elements of Pay: Annual Cash Incentives
2021 TARGET ANNUAL INCENTIVE AWARD OPPORTUNITIES
At the start of each fiscal year, the Board approves annual incentive compensation targets, as a percentage of target base salary, based on competitive market data provided by the Independent Compensation Consultant for our direct competitors and overall peer group, management’s recommendations and other relevant factors. The 2021 annual incentive targets, as a percentage of target base salary, for our NEOs were unchanged from 2020 (other than Ms. Anderson and Mr. Gaskill whose targets were increased in connection with their promotions and Ms. MacMillan whose first day of employment with the Company was in March 2021) as follows:

Corporate Governance Highlights

What We Do (Best Practice)What We Don't Do / Don't Allow

Separate the roles of Chairman and Chief Executive Officer

Target Bonus

No hedging or pledging of Company stock by executives or directors

Enforce strict insider trading policies

Anne P. Noonan

125%

Brian J. Harris75No change-in-control severance multiple%
Karli S. Anderson60%
Christopher B. Gaskill60%
Deon MacMillan60%
(1)
For 2021, Ms. MacMillan’s annual incentive award was prorated based on the number of days Ms. MacMillan was employed by the Company in 2021.
2021 ANNUAL INCENTIVE METRICS
The metrics underlying our annual incentive were selected as the strongest indicators of our success. Adjusted EBITDA and operating cash flow are among our most important financial measures, while safety goals ensure that we focus on sustainable performance. Personal objectives measure progress against key milestones that are important to long-term value creation. The Board has discretion to adjust the target financial metrics to reflect, among other things, mergers, acquisitions, divestitures and other non-routine activity both inside and outside of management’s control during the fiscal year.
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For 2021, performance metrics and weightings were as follows for our NEOs:
Metric and WeightingDefinition / Notes
Adjusted EBITDA (50%)Net income (loss) before interest expense (income), income tax expense (benefit) and depreciation, depletion and amortization, adjusted to exclude accretion, loss on debt financings, transaction costs, non-cash compensation and certain other non-cash and non-operating items.
Operating Cash Flow (20%)Annual cash flow in excess of three times salarycapital transactions and target bonus

acquisitions.

Set stock ownership guidelines for executives

Safety (10%)(1)
Recordable Incident Rate (RIR)
Any employee work-related injury that requires medical treatment and directors

results in a positive diagnosis of an injury, a prescription or work restrictions (per OSHA), divided by hours worked.

No excise tax gross-ups upon a change in control

Generally provide provisions for recoupment ("claw back") of incentive compensation

Lost Time Incident Rate (LTIR)

No re-pricing or cash buyout of underwater stock options

Same as RIR but only includes injuries that result in at least one full day away from work.

Disclose performance goals for incentive programs

Preventable Incident Rate (PVIR)

No enhanced retirement formulas

The number of preventable auto safety incidents, divided by miles driven.

SetCost Per Man Hour (CPMH)

Based on the total incurred insurance-company-posted claim reserves on 12/31 of a maximum payout limit on our annualgiven year for all workers compensation, general liability and long-term incentive programs for our NEOs

auto liability claims divided by the hours worked in that same calendar year.

No guaranteed compensation

Incorporate change-in-control provisions that are consistent with market practice

Personal Objectives (20%)

No market timing with granting of equity awards

Varies by individual. See “Performance Targets and Payout Ranges—Personal Performance Goals.”
(1)
Safety metrics included various metrics related to the frequency and severity of reported incidents. For 2021, the safety metrics (and the weightings assigned to each safety metric for each NEO) included RIR (4% total award payout), LTIR (1.5% total award payout), PVIR (3% total award payout), and CPMH (1.5% total award payout).
PERFORMANCE TARGETS AND PAYOUT RANGES
The achievement factor for each of the performance metrics was determined by multiplying the weight attributed to each performance metric by the applicable payout percentage for each metric. For corporate EBITDA and corporate cash flow payout percentages were determined by calculating actual achievement against the target amount based on a pre-established scale.
Financial Performance
For corporate EBITDA and corporate operating cash flow, payout percentages for actual performance between the specified threshold, target, and maximum performance levels is interpolated on a straight-line basis. The following table shows the payout percentages associated with various levels of achievement of corporate EBITDA and operating cash flow:
2021 Payout Percentage
25% (Threshold)100% (Target)200% (Maximum)
2021 Corporate EBITDA
(Performance as a Percentage of Target)
90%100%110%
5% (Threshold)100% (Target)150% (Maximum)
2021 Corporate Operating Cash Flow
(Performance as a Percentage of Target)
90%100%110%
Safety Performance Targets
The overall safety metric achievement factor equals the sum of each metric’s payout percentage multiplied by its weighting. The maximum payout opportunities for the safety metrics is 150% of target. For the safety metrics, payout percentages for actual achievement between the specified threshold, target and maximum levels were adjusted on a linear basis. For the safety metrics below, the lower the result, the stronger the performance. All safety targets, other than CPMH, required year-over-year improvement in performance.
2021 Payout Percentage
0% (Threshold)100% (Target)150% (Maximum)
RIR—40% Safety1.321.150.95
LTIR—15% Safety0.1740.150.08
PVIR—30% Safety1.060.980.88
CPMH—15% Safety0.210.170.155
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Personal Performance Goals
Personal performance goals may be focused on any combination of corporate, business-unit, or role-specific accomplishments or behaviors that focus executives on accomplishing our long-term business plan. The maximum payout under the Personal Performance Goal portion of the annual incentive is 200% of target.
Anne P. Noonan
Ms. Noonan’s personal performance goals included defining a comprehensive multi-year strategic roadmap for the Company in order to clearly define the Company’s future. The roadmap was to focus on financial performance, optimizing the Company’s portfolio for sustainable growth, improving ESG performance and a creating a disciplined capital allocation that maximizes shareholder value. In addition, Ms. Noonan was to create a set of core values for the Company in order to increase employee engagement, accountability, sense of community, diversity and inclusivity. Further, Ms. Noonan was to recruit a chief people officer, establish an upgraded enterprise risk management process, develop an information technology roadmap, and increase the overall effectiveness of her position.
Brian J. Harris
Mr. Harris’s personal performance goals included completing a corporate strategic roadmap and creating strategic plans for the Company’s finance and information technology functions. In addition, Mr. Harris, in conjunction with Ms. Anderson, was to complete a new investor relations communication package, attend 10-15 investor conferences and 7-12 non-deal roadshows, and potentially an investor day. Further, Mr. Harris was to analyze and improve the Company’s capital structure, portfolio management, and finance department and perform benchmarking of finance and information technology functions against the Company’s peers.
Karli S. Anderson
Ms. Anderson’s personal performance goals included developing and implementing a strategic roadmap to position the Company to lead its industry in social responsibility. Ms. Anderson was expected to quantify and deliver a SASB (Sustainability Accounting Standards Board) compliant baseline study encompassing social impact, land use and GhG emissions and to resource the function. She was also expected to improve ESG awareness and engagement throughout the business, evaluate current product initiatives, initiate strategic alliances and partnerships, and identify sustainable innovation opportunities to align with evolving customer and stakeholder needs.
In addition, Ms. Anderson was to standardize the Environmental, Health and Safety function across the business with regard to goals, reporting, document retention and planning as well as to integrate the functions into a single technology platform and begin to drive a culture of zero harm throughout the business. Further, Ms. Anderson was to complete a new investor relations communication package, deliver an investment day that effectively communicated Summit’s strategy, solicit continuous feedback loop with investors, and, in conjunction with Mr. Harris, attend 10-15 investor conferences and 7-12 non-deal roadshows.
Christopher B. Gaskill
Mr. Gaskill’s personal performance goals included defining a comprehensive multi-year strategic roadmap for the Company in order to clearly define the Company’s future. In addition, Mr. Gaskill was to lead certain corporate governance objectives, including de-staggering the Company’s board, eliminating the supermajority voting requirement, reflecting ESG oversight responsibilities in the Company’s governance documents, and implementing an employee stock purchase plan. Further, Mr. Gaskill was to create a strategic roadmap for the legal department and to implement appropriate employee covenants to reduce the Company’s risk profile. Finally, Mr. Gaskill was to improve compliance training and procedures to support the Company’s core values and work to improve the legal department’s efficiencies.
Deon MacMillan
Ms. MacMillan’s personal performance goals included creating a roadmap setting forth the Company’s human resources function. In addition, Ms. MacMillan was to create a request for proposal for the Company’s benefits programs. Further, Ms. MacMillan was to work with the legal department to implement appropriate employee covenants to reduce the Company’s risk profile.
2021 ACTUAL PERFORMANCE AND PAYOUTS
The initial targets shown in the below table are based on the performance goals and funding scales approved in the first quarter of 2021. However, the targets for corporate EBITDA and corporate operating cash were modestly decreased and increased, respectively, to account for acquisitions and dispositions during the year. The actual results for the 2021 annual incentive plan were certified by the Human Capital and Compensation Committee as shown in the below table.
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Initial
Target
Adjusted
Target
Actual
Results(1)
Payout
Percentage
Weight
Weighted
Payout
Percentage
Corporate EBITDA ($ Millions)$518$512.3$516.8107%50%53.5%
Corporate Operating Cash Flow ($ Millions)$314$315.1$253.30%20%0%
(1)
See “Reconciliation of Non-GAAP Measures to GAAP” on Annex A.
With respect to the corporate operating cash flow metric, which represented 20% of the total opportunity, the Human Capital and Compensation Committee conducted a qualitative evaluation of the performance of the NEOs. The Human Capital and Compensation Committee took note of an important factor that substantially affected corporate operating cash flow that was outside management’s control: adverse weather events and conditions across the Company’s geographic markets in October and November that led to delayed sales until December. Though operating cash flow had been substantially ahead of the budgeted target through the third quarter of 2021, the weather-related timing delays substantially affected collections timing within fiscal 2021, a key component of operating cash flow, and caused the full year result to be below the threshold level. Had the typical timing pattern of sales early in the fourth quarter of 2021 and collections within the quarter held, the change in net working capital would have been substantially higher and corporate operating cash flow would have exceeded target for 2021.
The NEOs drove strong performance and improvement in working capital management, as evidenced by multiple metrics (e.g. working capital to revenue percentage). And the Company introduced its Elevate Summit strategy and began its implementation, including divestitures, which enabled debt paydowns and interest savings. These contributing factors led to a strong increase in the stock price. Taking all of these factors into account and giving due consideration to the NEOs’ strong performance in all phases within their control, the Human Capital and Compensation Committee determined to recognize achievement at the target level for this 20% metric.
Corporate safety (10% weight): Overall performance was 50% of target, resulting in a weighted payout of 5% for each NEO.
Financial and safety performance achievement for 2021 yielded an actual incentive earned of 78.5% of target for each NEO compared to the 80% weighted target. The remainder of each NEO’s 2021 actual incentive earned is based on Personal Performance Goal performance (20% weight).
2021 Base Salary
Target Incentive as a
Percentage of Base Salary
Actual Incentive Earned
as a Percentage of Base Salary
Annual Cash
Incentive Earned
Anne P. Noonan$952,750125%148%1,411,299
Brian J. Harris$619,03075%79%489,807
Karli S. Anderson$375,00060%63%237,918
Christopher B. Gaskill$420,00060%67%282,910
Deon MacMillan(1)$450,00060%48%214,880
(1)
For 2021, Ms. MacMillan’s annual cash incentive was prorated based on the number of days she was employed by the Company in 2021.
Elements of Pay: Long-Term Equity Incentives
Our long-term equity incentives for NEOs in 2021 consisted of a balance of performance units (50%) and RSUs (50%). The Human Capital and Compensation Committee uses competitive market data from our annual total compensation study to assist with targeted long-term incentive value. In addition, the Human Capital and Compensation Committee considers individual performance, potential future contributions to our business, internal equity and management’s recommendations except in the case of the Chief Executive Officer.
Award TypeWeightingVestingValue Tied To

Performance


Retain an independent compensation consultant that reports directlyUnits

50%At the end of three years based 50% on relative TSR performance and 50% on ROIC performanceThree-year TSR ranking compared to companies in the Compensation Committee

S&P 400 Midcap Materials and Capital Goods Companies, and ROIC performance compared to targeted performance criteria

Eliminated substantially all perquisites for all NEOs in 2017

Perform anRSUs

50%Vest over three years in equal annual compensation program risk assessment to ensure thatinstallments on each anniversary of the Company's compensation policies and practices are not reasonably likely to have a material adverse effect on the Company

grant date
Stock price performance
Performance Units Granted in 2021

The 2021 performance units focus our executives on the long-term performance of the Company relative to industry peers and predetermined financial targets. The performance metrics are weighted 50% on three-year relative TSR and 50% on the average of three one-year performance periods for return on invested capital (“ROIC”).
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The peer group for determining our relative TSR is separate and distinct from the peer group used to evaluate and set NEO compensation levels discussed under “—Compensation Decision Process—Role of Peer Companies and Competitive Market Data.” The Relative TSR peer group represents a broader array (typically near 65 to 70 companies) of industry peers competing for stockholders and investors.
ROIC is determined for the performance period by dividing (i) the arithmetic mean of the following for each fiscal year during the performance period: the Company’s Adjusted EBITDA (as reported on the Company’s audited financial statements) for each such fiscal year, reduced by depreciation, depletion and amortization charges for such fiscal year by (ii) the arithmetic mean of the following for each fiscal year during the performance period: the sum of the Company’s total outstanding long-term debt, stockholders’ equity, retained earnings and accumulated other comprehensive income, in each case, as reported on the Company’s audited financial statements for such fiscal year. The Compensation Committee believes that including ROIC as a performance metric incentivizes management to maximize efficiency of capital deployed for the benefit of the Company’s stockholders.
The performance period for the performance units granted in March 2021 began on January 1, 2021 and ends on December 31, 2023 and are earned based on performance against the target below. Beginning in 2021, the performance units are measured using the average three-year performance against one-year ROIC goals. The changes to the design of the performance units were the result of the following:

The Company’s new leadership team embarking on a new strategy;

Allows realistic performance targets to be set when management and the committee have the most current information;

Allows stronger shareholder alignment with the most realistic ROIC stretch targets; and

Provides more realistic targets in a highly uncertain environment due to COVID-19 and economic forces;
Earned amounts will be interpolated on a straight line basis for performance between threshold, target, and maximum performance requirements. Financial goals are established based on a review of historical and strategic forward-looking performance criteria and are established at reasonable but stretch performance requirements for threshold, target, and maximum payout opportunities. We will proactively disclose the ROIC performance requirements and performance attainment at the completion of the three-year performance period.
Threshold and maximum performance levels for relative TSR and ROIC earn payments of 50% of target and 200% of target, respectively. The following chart summarizes relative three-year TSR performance requirements.
TSR Level of Achievement
Below ThresholdThresholdTargetMaximumCap (if applicable)
Relative TSR Position
< 25th percentile
25th percentile
50th percentile
75th percentile
Capped at 100% if Company TSR
is negative over performance
period, regardless of ranking
Achievement Percentage0%50% of target100% target200% of target
See “—Treatment of Long-Term Incentive Awards Upon Termination or Change in Control” for a description of the potential vesting of the NEOs’ equity awards that may occur in connection with certain termination events and a change in control.
For 2021, the Human Capital and Compensation Committee set the target pay levels and made the grants set forth in the table below.
2021 Target Long-Term
Incentive as % of Base Salary
2021 Target Long-Term
Incentive(1)
Performance Units
Granted (#)
Restricted Stock Units
Granted (#)
Anne P. Noonan305%$2,905,88850,83850,838
Brian J. Harris155%$959,49716,78616,786
Karli S. Anderson125%$468,7507,1077,107
Christopher B. Gaskill125%$525,0009,1859,185
Deon MacMillan(2)100%$450,00014,926
(1)
The target award values shown vary from the values listed in the 2021 Grants of Plan-Based Awards Table for two reasons. First, the 2021 Grants of Plan-Based Awards Table uses the Monte Carlo valuation method, which determines the accounting expense for our performance units because 50% is based on Relative TSR. This generated an expense value approximately 160% higher than the actual value on the grant date for the awards issued on March 30, 2021 to each of our NEOs (other than Ms. MacMillan), and an expense value approximately 160% higher than the actual value on the grant date for the awards issued on March 10, 2021 to Ms. MacMillan. However, we do not believe the Monte Carlo accounting model is appropriate for purposes of setting total compensation opportunity. Second, to mitigate the potential impact of short-term stock price swings on our equity grants, we use the 20-day average closing stock price immediately preceding the grant date to determine the grant size, rather than the closing stock price on the actual grant date as shown in the 2021 Grants of Plan-Based Awards Table.
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(2)
Pursuant to Ms. MacMillan’s offer letter, she received an initial equity award of RSUs having a value of $450,000.
Performance Units Earned for the Performance Period 2019—2021
Performance units were granted to our NEOs then employed by the Company that were subject to Relative TSR performance for the three-year performance period beginning January 1, 2019 and ending December 31, 2021. The Relative TSR peer group was companies in the S&P 400 Midcap Materials and Capital Goods companies (67 companies at the start of the performance period). Relative TSR performance was based on dividends plus beginning and ending stock prices based on the trailing 20-day average closing price. During the performance period, our Relative TSR ranked at the 97th percentile, resulting in a payout equal to 200% of target.
Performance Units Achievement for the First Year of the Performance Period 2021—2023
Performance units were granted to our NEOs then employed by the Company that were subject to Relative TSR and ROIC performance for the three-year performance period beginning January 1, 2021 and ending December 31, 2023. The Relative TSR peer group was companies in the S&P 400 Midcap Materials and Capital Goods companies. Relative TSR performance was based on dividends plus beginning and ending stock prices based on the trailing 20-day average closing price. During the first year of the performance period, our Relative TSR ranked at the 77th percentile and our ROIC exceeded our target performance criteria.
Retirement, Perquisites, and Other Benefits
We have a tax-qualified contributory retirement plan established to qualify as a deferred salary arrangement under Section 401(k) of the Internal Revenue Code of 1986, as amended (the “Code”). The plan covers all U.S. employees, including our NEOs, who are limited to their annual tax deferred contribution limit as allowed by the Internal Revenue Service (the “IRS”). We provide for matching contributions to the plan, including 100% of pre-tax employee contributions, up to 4% of eligible compensation. Employer contributions vest immediately.
The Company also offers the members of a select group of management or highly compensated employees, including the NEOs, the opportunity to supplement their retirement savings through the Summit Materials Deferred Compensation Plan (the “DCP”). An eligible participant in the DCP may elect to defer up to 50% of such participant’s base salary compensation and up to 100% of such participant’s designated discretionary bonus award compensation and annual incentive award compensation. The DCP also permits Company-provided credits to participants’ accounts, but no such credits are currently being made. Additional information about the DCP is reflected in “—2021 Non-Qualified Deferred Compensation” below.
In alignment with a health and safety culture, the Company offers an Executive Health Program through the Mayo Clinic for the CEO and the executive team, including all the NEOs. The Human Capital and Compensation Committee approved this program in the Fall of 2021 and the use of this benefit is voluntary and not all executives will utilize it annually. The value of the program will not exceed $10,000 annually for each eligible executive.
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Compensation Discussion and Analysis—How We Paid
Our Compensation Philosophy

Our executive compensation program is intended to attract, motivate and retain executive officers and to align the interests of our executive officers with stockholders'stockholders’ interests.

The Board'sBoard’s objectives for our program include, but are not limited to, the following:

[MISSING IMAGE: tm123_chrt-cda.jpg]
Say-on-Pay Votes

GRAPHIC


Table of Contents

Components of 2017 Target Compensation

Pay ComponentPurposeCharacteristicsFixed or
Performance
Base SalaryAttractIn 2021, the Human Capital and retain executives through market-based payReflects the executive's experience and performance and the Board's knowledge of market practicesFixed

Annual Cash Bonus


Encourages achievement of strategic and financial performance metrics that drive long-term stockholder value


Based on achievement of predefined financial, non-financial (e.g. safety) and individual performance objectives


Performance

Long-Term Equity Incentives


Aligns executives' long-term compensation with stockholders' investment interests; enhances executive retention


Value to the executive is based on long-term stock price performance and value creation


Performance

Health/Welfare Plans and Retirement Benefits


Provide competitive benefits that promote employee health and productivity and support longer term financial security


Similar to benefits offered to other employees


Fixed

2017 Target Compensation Elements

              The Compensation Committee approved the following compensation targets for 2017:

Base SalaryAnnual Bonus Target
as % of Base Salary
Long-Term Incentive
Target as % of Base
Salary

Thomas W. Hill

$826,956140%275%

Michael J. Brady

425,00060%100%

Brian J. Harris

550,00075%155%

M. Shane Evans

420,78760%100%

Douglas C. Rauh

550,00075%155%

Say-on-Pay Votes

              In 2017, the Compensation Committee considered the outcome of the stockholder advisory vote on 20162020 executive compensation when making decisions relating to the compensation of our NEOs and our executive compensation program and policies. Our stockholders voted at our 20172021 annual meeting, in a nonbinding advisory vote, on the 20162020 compensation paid to our NEOs. Our stockholders overwhelmingly (96%(98%) approved the compensation of our NEOs. Based on the level of support, the Human Capital and Compensation Committee determined that stockholders generally support our compensation practices. The Company has determined to hold this advisory, say-on-pay vote annually, consistent with the stated preferences of our stockholders and with the results of our 2016 Annual Meeting of Stockholders where the majority of the votes cast were in favor of an annual advisory vote.

In addition, the Company continued its efforts to reach out to investors for feedback in 2021. During the year, the Company’s investor relations and legal departments contacted many of the Company’s largest investors and engaged in conversations with a significant portion of the investor base. The feedback received in these conversations was generally positive in regard to the Company’s compensation programs. The Human Capital and Compensation Committee intends to continue to consider the views of our stockholders when designing, reviewing and administering the Company'sCompany’s compensation programs and policies.


Compensation Decision Process

Table of Contents

Compensation Decision Process

Role of the Human Capital and Compensation CommitteeGRAPHIC
The Human Capital and Compensation Committee is responsible to our Board for oversight of our executive compensation program. The Human Capital and Compensation Committee is responsible for the review and approval of all aspects of our program.
Among its duties, the Human Capital and Compensation Committee is responsible for:


Assessing competitive market data from Aon, our independent compensation consultant (the "Independentthe Independent Compensation Consultant")

Consultant


Reviewing each NEO'sNEO’s performance in conjunction with competitive market data and, accordingly, approving compensation recommendations including, but not limited to, base salary, annual bonus, long-term incentives, and benefits/perquisites


Considering, recommending and approving incentive plan goals, and achievement levels,

and program structure


Incorporating meaningful input from our stockholders, if applicable

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Role of ManagementGRAPHIC
For each NEO excluding himself,herself, our CEOChief Executive Officer recommends to the Human Capital and Compensation Committee compensation levels for NEOs based on a review of market data and individual performance. The Human Capital and Compensation Committee reviews and discusses all recommendations prior to approval, then submits all recommendations to the Board for approval.
For the CEO,Chief Executive Officer, during executive session without the CEOChief Executive Officer present, the Human Capital and Compensation Committee is solely responsible for assessing performance and making compensation recommendations to the Board for approval. Management does not make compensation-related recommendations for the CEO.Chief Executive Officer.

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Role of the Independent Compensation ConsultantGRAPHIC
In 2017,2021, the Human Capital and Compensation Committee retained the Independent Compensation Consultant in accordance with the Human Capital and Compensation Committee'sCommittee’s charter. The Independent Compensation Consultant reports directly to the Human Capital and Compensation Committee. The Human Capital and Compensation Committee retains sole authority to hire or terminate the Independent Compensation Consultant, approve its fees, determine the nature and scope of services and evaluate the Independent Compensation Consultant'sConsultant’s performance.





A representative of the Independent Compensation Consultant attends Human Capital and Compensation Committee meetings, as requested, and communicates with the Human Capital and Compensation Committee chair between meetings. The Human Capital and Compensation Committee makes all final decisions and recommendations.





The Independent Compensation Consultant'sConsultant’s roles include, but are not limited to, the following:


Advising the Human Capital and Compensation Committee on executive compensation trends and regulatory developments;


Developing a peer group of companies for determining competitive compensation amounts and practices;


Providing a total compensation study for executives against peer companies;


Providing advice to the Human Capital and Compensation Committee on governance best practices, as well as any other areas of concern or risk; and


Reviewing and commenting on proxy disclosure items, including the CD&A.






The Human Capital and Compensation Committee has assessed the independence of the Independent Compensation Consultant, considering all relevant factors, including those set forth in Rule 10C-1(b)(4)(i) through (vi) under the Securities Exchange Act of 1934, as amended.Act. Based on this review, the Human Capital and Compensation Committee concluded that there are no conflicts of interest raised by the work performed by the Independent Compensation Consultant and that Aonthe Independent Compensation Consultant is independent.

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Role of Peer Companies and Competitive Market DataGRAPHIC
In the Fall of 2016,2020, to assist with 20172021 compensation decisions, the Independent Compensation Consultant performed a competitive pay study. To develop competitive market values for the NEOs, the Independent Compensation Consultant developed, and the Human Capital and Compensation Committee approved, a peer group of 17 companies.
16 companies, which were the same companies used in the prior year.
The peer group development criteria included:


Industry: Companies in the building products, or construction materials, forest products, and mining industries


Company size: Approximately 0.4x to 3x times our annual revenues (primary factor), with market capitalization reviewed as a secondary factor


ISS: Companies considered by Institutional Shareholder Services ("ISS"(“ISS”) to be the Company'sCompany’s compensation peers and used in ISS'ISS’ annual report regarding the Company


Peers of Peers: Companies used in the peer groups of potential peer companies


Competitors: Companies that compete with us for business and management talent

Consistency: Companies contained in the peer group in the prior year






The approved peer group had annual revenues which ranged from approximately $600$894 million to $3.8$4.9 billion, with average / median annual revenue of approximately $1.9$2.4 billion and average$1.8 billion, respectively. For our Fall 2020 total compensation study, our annual revenue ofrevenues were estimated at approximately $2.0 billion. Our 2016 annual revenue was approximately $1.6$2.3 billion. The Independent Compensation Consultant developed size-adjustedsize adjusted market values (regression analysis) for each position using our annual revenue.
34 | SUMMIT MATERIALS2022 NOTICE OF ANNUAL MEETING AND PROXY STATEMENT







The size-adjusted 50th percentile for total compensation is a key reference point for the Human Capital and Compensation Committee.Committee; however, the Human Capital and Compensation Committee also considers other factors, including, experience, performance and expected future contributions. For positions where peer company proxy data was not available, the Independent Compensation Consultant utilized published and private compensation survey sources.
PEER GROUP
Peer Group


Armstrong World Industries, Inc.


Boise Cascade Company


Compass Minerals International, Inc.


CONSOL Energy Inc.


Cornerstone Building Brands, Inc.


Dycom Industries, Inc.


Eagle Materials Inc.


Gibraltar Industries, Inc.


Granite Construction Inc.

Headwaters Inc.


Louisiana-Pacific Corp.


Martin Marietta Materials, Inc.


Masonite International Corporation

NCI building Systems Inc.


Quanex Building Products Corp.


Simpson Manufacturing Company


US Concrete Inc.

USG Corp.


Vulcan Materials

Company
TIMING OF COMPENSATION DECISIONS

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Timing of Compensation Decisions

Pay recommendations for our executives, including the NEOs, are typically made by the Human Capital and Compensation Committee at its first scheduled meeting of the fiscal year, typically held in February around the same time we report our fourth quarter and year-end financial results for the preceding fiscal year and provide our financial guidance for the upcoming year (the "February meeting"“first meeting”). This timing allows the Human Capital and Compensation Committee to have a complete financial performance picture prior to making compensation decisions.

Decisions with respect to prior year performance, as well as annual equity awards, base salary increases and target performance levels for the current year are typically made at the Februaryfirst meeting. Any equity awards recommended by the Human Capital and Compensation Committee at this meeting are reviewed by the Board and, if approved, are dated on the date ofapproved by the Board either at a subsequent board meeting held later that day or the following day.via written consent. As such, the Human Capital and Compensation Committee does not time the grants of equity incentives to the release of material non-public information.
The exercise price of stock options is the closing price of our common stock on the date of grant.

              The exception isexceptions are grants to executives who are promoted or hired from outside the Company during the year.year, and discretionary grants made throughout the year for retention and extraordinary purposes. These executives may receive compensation changes or equity grants effective or dated, as applicable, as of the date of their promotion, hiring date, or other Board approval date.

DETERMINATION OF CHIEF EXECUTIVE OFFICER COMPENSATION
Determination of CEO Compensation

At the Februaryfirst meeting of each fiscal year, in executive session without the CEOChief Executive Officer present, the Human Capital and Compensation Committee also reviews and evaluates CEOChief Executive Officer performance, and determines performance achievement levels, for the prior fiscal year. The Human Capital and Compensation Committee also reviews competitive compensation data from the peer group companies. The Human Capital and Compensation Committee typically approves, or presents, pay recommendations for the CEOChief Executive Officer to the Board, excluding the CEO,Chief Executive Officer, for approval. If applicable, during executive session, the Board conducts its own review and evaluation of the CEO'sChief Executive Officer’s performance taking into consideration the recommendations of the Human Capital and Compensation Committee.

Compensation Elements

Base Salary

              Annual base salaries compensate our executive officers for fulfilling the requirements of their respective positions and provide them with a level of cash income predictability and stability with respect to a portion of their total compensation. The Compensation Committee determines base salaries for the NEOs and other executives based on a number of factors, including but not limited to, the Compensation Committee's understanding of executive pay practices, individual performance, Company performance and management recommendations (except with respect to the CEO).

              For 2017, based on a thorough review of competitive market data and internal alignment of total compensation opportunity, the Compensation Committee set the base salaries set forth in the table below. Mr. Brady's adjustment moved his salary closer to similar NEOs at peer companies. The 2017 base salaries for Messrs. Hill, Harris, Evans, and Rauh also reflect a one-time salary adjustment that was provided in


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connection with the elimination of substantially all perquisites in 2017. Mr. Brady did not previously receive significant perquisites.

EQUITY PLAN
 
 2017 Base Salary 2016 to 2017 Increase

Thomas W. Hill

 $826,956              3%

Michael J. Brady

  425,000              11%

Brian J. Harris

  550,000              6%

M. Shane Evans

  420,787              5%

Douglas C. Rauh

  550,000              6%

Annual Cash Incentives

              Each NEO was eligible to earn an annual incentive under our Short-Term Incentive Plan (the "STIP") based upon the achievement of performance targets approved by the Board at the February meeting.

2017 Target Annual Incentive Award Opportunities. At the start of each fiscal year, the Board approves annual incentive compensation targets, as a percentage of base salary, based on the understanding of the Board of competitive executive pay practices, management's recommendations and other relevant factors. The 2017 annual incentive targets, as a percentage of base salary, for our NEOs were consistent with our 2016 targets and were as follows:


Target Bonus

Thomas W. Hill

        140%

Michael J. Brady

           60%

Brian J. Harris

           75%

M. Shane Evans

           60%

Douglas C. Rauh

           75%

2017 Annual Incentive Metrics. For corporate NEOs (Messrs. Hill, Brady, Harris and Rauh), the performance metrics approved for fiscal 2017 were (i) corporate earnings before interest, taxes, depreciation, depletion and amortization ("EBITDA"), as defined by the Board, which is defined as EBITDA, as adjusted to exclude accretion, loss on debt financings, tax receivable agreement expense, income from discontinued operations and certain non-cash and non-operating items plus the EBITDA contribution of certain recent acquisitions, (ii) operating cash flow, which approximates annual cash flow exceeding capital transactions and acquisitions, (iii) safety metrics, and (iv) personal objectives, which vary by individual. Mr. Brady was also subject to acquisition related metrics, including acquisition spend and acquisition EBITDA performance. For Mr. Evans, the approved performance metrics included (i) corporate EBITDA, (ii) segment EBITDA, (iii) segment cash flow, (iv) segment safety and (v) personal objectives. The Board has discretion to adjust the financial metrics to reflect merger, acquisition or divestiture activity during the fiscal year. In 2017, as further discussed below, the metrics were adjusted to reflect acquisitions completed during the year and the financial impact of Hurricane Harvey on the Company's operations.


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              For 2017, performance metrics and weightings were as follows:

 
 EBITDA Operating
Cash Flow
 Safety/
Acquisition (2)
 Personal
Objectives
 Primary Personal Objectives

Thomas W. Hill

  50%  20%  10%  20% 

Deliver on or over budget operations improvement

Progress on developing a ready-mix concrete performance team

Achieve minimum acquisition spend and acquisition performance

Improve investor relations function

Progress on management succession planning

Michael J. Brady

  50%  10%  20%  20% 

Achieve minimum acquisition spend

Achieve performance levels for 2016 and 2017 acquisitions consistent with investment thesis

Continue to build the Development team

Drive senior leadership team involvement

Brian J. Harris

  50%  20%  10%  20% 

Increase interactions with Board members

Continue to develop a robust investor relations function

Provide overall direction to the information technology group

Evaluate the possibility of using a balanced scorecard approach to achieve greater alignment in strategic execution

Increase engagement with operating companies

M. Shane Evans(1)

  60%  20%  10%  10% 

Continue to drive pricing, cost reduction, sales and sourcing achievements above and beyond 2017 budget

Evaluate vehicle allowance programs

Hold quarterly Texas managers meetings

Douglas C. Rauh

  50%  20%  10%  20% 

Assist in finding a new Chief Operating Officer

Deliver on budget EBITDA and free cash flow targets

Facilitate talent management process at operating companies

Continue to drive pricing, cost reduction and sourcing achievements above and beyond 2017 budget

Continue to drive safety performance

Work with M. Shane Evans on performance at Company's Austin business

Drive the implementation of total productive maintenance throughout the Company


(1)
Mr. Evans's EBITDA metric is based 20% on Corporate EBITDA and 40% on West Segment EBITDA. Mr. Evan's Operating Cash Flow metric is based on West Segment Operating Cash Flow.
(2)
Each of our NEOs had safety metrics for 2017. For each of our NEOs, the safety metrics accounted for 10% of the overall bonus opportunity. Safety metrics included various metrics related to the frequency and severity of reported incidents. For 2017, the safety metrics (and the weightings assigned to each safety metric for each NEO) included recordable incident rate (4%), lost time incident rate (2%), fleet preventable incident rate (2%) and cost per man hour (2%). For Mr. Evans, the safety metrics related to the West segment. Mr. Brady was also subject to acquisition metrics, which accounted for 10% of his overall bonus opportunity (5% attributable to acquisition spend and 5% attributable to acquisition EBITDA performance).

              Performance / Payout Percentage.    The achievement factor for each of the performance metrics was determined by multiplying the weight attributed to each performance metric by the applicable payout percentage for each metric. For corporate EBITDA and operating cash flow, payout percentages were determined by calculating actual achievement against the target amount based on a pre-established scale.


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Payout percentages for actual performance between the specified threshold levels and 105% of target, and between 105% of target and the maximum levels, were adjusted on a linear basis. The following table shows the payout percentages associated with various levels of achievement of corporate EBITDA:

 
Payout Percentage
 
25% (Threshold)100% (Target)138%200% (Maximum)
Corporate EBITDA (Percentage of Target)90%100%105%110%

              The following table shows the payout percentages associated with various levels of achievement of corporate operating cash flow:

 
Payout Percentage
 
0% (Threshold)100% (Target)125%150% (Maximum)
Corporate Operating Cash Flow (Percentage of Target)90%100%105%110%

              For Mr. Evans, Segment EBITDA and Segment Cash Flow payout percentages were determined by calculating actual achievement against the target amount based on a pre-established scale. Payout percentages for actual performance between the specified threshold, target and maximum levels were adjusted on a linear basis. The following table shows the payout percentages associated with threshold, target and maximum achievement of Segment EBITDA and Segment Cash Flow:

 
Payout Percentage
 
25% (Threshold)100% (Target)200% (Maximum)
Segment EBITDA and Segment Cash Flow (Percentage of Target)85%100%120%

              The maximum payout opportunities for the safety metrics and personal objectives were 150% of target. For the safety metrics, payout percentages for actual achievement between the specified threshold, target and maximum levels were adjusted on a linear basis. The overall safety metric achievement factor equals the sum of each metric's payout percentage multiplied by its weighting.

              For Mr. Brady, acquisition spend and acquisition EBITDA performance were determined by calculating actual achievement against the target amount based on a pre-established scale. The maximum payout opportunities for the acquisition metrics were 150% of target for actual achievement at 110% of target.


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              2017 Actual Performance.    Actual results for the 2017 annual incentive plan were certified by the Compensation Committee, as follows, based on the performance goals and funding scales approved in the first quarter of 2017:

 
Initial TargetAdjusted
Target to
Account for
2017
Acquisitions
and Hurricane
Harvey(1)
Actual ResultsPayout
Percentage
Weighted Achievement
Factor

Corporate EBITDA

$416.3 million$457.1 million$457.1 million100%50% (Messrs. Hill, Brady,
Harris and Rauh)

    20% (Mr. Evans)

Corporate Operating Cash Flow

230.5 million217.2 million225.4 million119%23.8% (Messrs. Hill,
Harris and Rauh)

    11.9% (Mr. Brady)

West Segment EBITDA

182.5 million211.5 million223.2 million127%50.8%

West Segment Cash Flow

101.4 million101.4 million123.9 million200%40%

(1)
During 2017, Hurricane Harvey adversely affected our operations not only during the days immediately before and after the storm, but also in the weeks and months after as our customers recovered and reallocated resources in response to damage caused by the storm. As a result, the Compensation Committee determined to adjust certain performance metrics. The following table summarizes the effects of these adjustments on the applicable payout percentages:
 
 Payout
Percentage Without Hurricane
Harvey Adjustment
 Payout
Percentage With Hurricane
Harvey Adjustment

Corporate EBITDA

 93% 100%(1)

Corporate Operating Cash Flow

 109% 119%

West Segment EBITDA

 110% 127%

West Segment Cash Flow

 170% 200%

(1)
Mr. Evans' Corporate EBITDA metric was not adjusted for Hurricane Harvey.

              The payout percentages for the safety metrics were as follows: corporate safety was 124% of target, resulting in an achievement factor of 12.4% for each NEO other than Mr. Evans; and West Segment safety for Mr. Evans was 72% of target, resulting in an achievement factor of 7.2%. Each of the safety metric targets were set at a challenging level that are consistent with our long-term goals and designed to meet high stockholder expectations.

              Actual annual cash incentive awards are calculated by multiplying each NEO's actual base salary by his target award potential, which was then adjusted by an overall achievement factor based on the combined weighted achievement of the components described above, including an evaluation of each


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NEO's personal objectives. The following table summarizes the 2017 bonuses earned based on actual performance, as compared to the target opportunity for each NEO:

 
2017 Base SalaryTarget
Incentive
Overall Achievement Factor as
a Percent of Target Award
Annual Cash
Incentive
Earned

Thomas W. Hill

$826,956      $1,157,739      110%$1,275,480

Michael J. Brady

425,000      255,000      111%283,764

Brian J. Harris

550,000      412,500      109%450,326

M. Shane Evans

420,787      252,472      128%323,669

Douglas C. Rauh

550,000      412,500      106%437,951

Long-Term Incentives

On-Going Post-IPO Long-Term Incentives

The Company maintains the Summit Materials, Inc. 2015 Omnibus Incentive Plan (the "Omnibus Incentive Plan") which allows for grants of equity-based awards in the form of stock options, stock appreciation rights, restricted stock and restricted stock units ("RSUs"),RSUs, performance units, undivided fractional limited partnership interests in Summit Holdings and other stock-based awards. In 2015, the

Governance of Executive Compensation Committee determined that the size, structure, and value of the pre-IPO grants were sufficient for 2015 and no additional equity grants were made in 2015 in connection with, or after, our IPO.

              In 2016, the Compensation Committee worked with the Independent Compensation Consultant to develop a competitive long-term incentive grant structure as an on-going public company. The Compensation Committee believes in a balanced approach to long-term incentive compensation, with an emphasis on performance-based compensation. The Compensation Committee determined that a similar structure in 2017 was appropriate.

              Our regular ongoing equity incentives for NEOs in 2017 consisted of a balance of performance units (34%), RSUs (33%) and stock options (33%). In 2018, the Committee determined to eliminate stock options from regular ongoing equity incentive grants. Accordingly, our regular ongoing equity incentives for NEOs in 2018 consisted of a balance of performance units (50%) and RSUs (50%). The Committee uses competitive market data from our annual total compensation study to assist with targeted long-term incentive value. In addition, the Committee considers individual performance, potential future contributions to our business, internal equity and management's recommendations.


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Award TypeWeightingVestingValue Tied To
Performance Units1/3 of total awardVest at the end of a 3-year period in an amount based on the level of performance achievedCompany three year total shareholder return ("TSR") ranking to the companies that formerly comprised the S&P Building & Construction Select Industry Index , which index was discontinued in 2017; see the section entitled "2018 Enhancements to Our On-Going Long-Term Incentive Structure" for a broader discussion
RSUs1/3 of total awardVest over 3 years in equal annual installments on each anniversary of the grant dateStock price performance
Stock Options1/3 of total awardVest over 3 years in equal annual installments on each anniversary of the grant dateStock price appreciation

Performance Units

              The 2017 performance units focus our executives on the long-term performance of the Company relative to industry peers. The 2017 performance units vest at the end of a three-year performance period, based on our TSR ranking relative to companies that formerly comprised the S&P Building & Construction Select Industry Index ("Relative TSR"), which index was discontinued in 2017, using beginning and ending stock prices based on the trailing 20-day average closing price. The Compensation Committee determined that Relative TSR ranking against an industry index aligns management with stockholder value creation and provides incentive to achieve the Company's long-term strategy.

              The performance period for the performance units granted in February 2017 began on January 1, 2017 and ends on December 31, 2019. Following the completion of the three-year performance period, the Compensation Committee will determine earned amounts based on our Relative TSR ranking versus the companies that formerly comprised the S&P Building & Construction Select Industry Index. This peer group is separate and distinct from the peer group used to evaluate and set NEO compensation levels discussed under "—Compensation Decision Process—Role of Peer Companies and Competitive Market Data." The Relative TSR peer group represents a broader array (approximately 130 companies) of industry peers competing for stockholders and investors and avoids subjectivity as it was independently constructed by Standard & Poor's.

              The 2017 grants will be earned based on the schedule below. Earned amounts will be interpolated on a straight-line basis for performance between the stated percentiles.

STOCK OWNERSHIP GUIDELINES

Level of Achievement

Below ThresholdThresholdTargetMaximumCap (if applicable)
Relative TSR Position

Achievement Percentage
< 30th percentile

0%
30th percentile

50% of target
50th percentile

100% target
75th percentile

200% of target
Capped at 100% if Company TSR is negative over performance period, regardless of ranking

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              See "—Potential Payments Upon Termination or Change in Control" for a description of the potential vesting of the NEOs' equity awards that may occur in connection with certain termination events and a change in control.

              For 2017, the Compensation Committee set the target pay levels and made the grants set forth in the table below.

 
2017 Target
Long-Term Incentive
as % of Base
Salary
2017 Target Long-
Term Incentive
Performance
Units Granted
Restricted Stock
Units Granted
Stock Options
Granted

Thomas W. Hill

275%              $2,274,129        31,689        30,757        51,261

Michael J. Brady

100%              425,000        5,922        5,748        9,580

Brian J. Harris

155%              852,500        11,879        11,530        19,216

M. Shane Evans

100%              420,787        5,863        5,691        9,485

Douglas C. Rauh

155%              852,500        11,879        11,530        19,216

2018 Enhancements to Our On-Going Long-Term Incentive Structure

              During 2017, the Compensation Committee worked closely with our Independent Compensation Consultant to enhance our long-term incentive structure for our executive officers. The following modifications were approved for the 2018 grant cycle:

    Relative TSR peer group for performance units: The S&P Building & Construction Select Industry Index was discontinued in 2017. Outstanding grants will continue to use the companies comprising that index. For the 2018 grant cycle, the Committee approved a new Relative TSR peer group defined as the Materials and Capital Goods companies (consisting of companies in GICS industry groups 2010 and 1510—, which is the same as the previous peer group), from the S&P 400 Midcap Index. The new Relative TSR peer group consists of approximately 68 companies with similar revenues and market capitalization as the Company.

    Eliminated stock options and increased the weight of performance units and RSUs: The Committee approved the elimination of stock options and increased the weight on performance units and RSUs. The new approach beginning with 2018 equity grants will be 50% performance units and 50% RSUs.

Retirement, Perquisites and Other Benefits

              We have a tax-qualified contributory retirement plan established to qualify as a deferred salary arrangement under Section 401(k) of the Internal Revenue Code of 1986, as amended (the "Code"). The plan covers all U.S. employees, including our NEOs, who are limited to their annual tax deferred contribution limit as allowed by the Internal Revenue Service (the "IRS"). We provide for matching contributions to the plan, including 100% of pre-tax employee contributions, up to 4% of eligible compensation. Employer contributions vest immediately.

              The Company also offers the members of a select group of management or highly compensated employees, including the NEOs, the opportunity to supplement their retirement savings through the Summit Materials Deferred Compensation Plan (the "DCP"). An eligible participant in the DCP may elect to defer up to 50% of such participant's base salary compensation and up to 100% of such participant's designated discretionary bonus award compensation and annual incentive award compensation. The DCP also permits Company-provided credits to participants' accounts, but no such credits are currently being


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made. Additional information about the DCP is reflected in "—2017 Non-Qualified Deferred Compensation" below.

              Beginning in 2017, we eliminated substantially all perquisites to our NEOs and senior executives. A one-time salary adjustment was provided to offset the changes.

Change in Control and Severance Arrangements

              On December 15, 2017, the Board, on the recommendation of the Compensation Committee, approved an Executive Severance Plan (the "Severance Plan") in order to standardize severance provisions for certain executive officers that had been governed by separate legacy arrangements. All of our NEOs, other than Mr. Rauh, who left the Company at the end of the 2017, participate in the Severance Plan. In connection with implementing the Severance Plan, all participants in the Severance Plan waived the provisions of any applicable employment agreement that would have applied under the conditions set forth under the Severance Plan. See "Potential Payments Upon Termination or Change in Control" for a description of the Severance Plan.

              Also on December 15, 2017, Mr. Rauh entered into the Agreement and Release in connection with his departure. In recognition of Mr. Rauh's service to the Company, the Agreement and Release provided for the beneficial modification of the terms of Mr. Rauh's outstanding equity awards. The terms of the Agreement and Release are described below under "Potential Payments Upon Termination or Change in Control."

Other Compensation Policies

Stock Ownership Guidelines

We have established stock ownership guidelines for our CEO,Chief Executive Officer, officers reporting to the CEO,Chief Executive Officer, and directors. The approved guidelines are as follows:


CEO:Chief Executive Officer: 6x base salary


Section 16 Officers reporting to the CEO:Chief Executive Officer: 2.5x base salary


Directors: 3x4x annual cash retainer

2022 NOTICE OF ANNUAL MEETING AND PROXY STATEMENTSUMMIT MATERIALS | 35


Participants are expected to comply with the ownership requirements within five years of the later of (x)(a) December 12, 2015 and (y)(b) an appointment to a qualified position. Once the ownership requirements have been satisfied, future declines in share price will not affect compliance so long as the participant holds the number of equity interests he or she had at the time he or she achieved the expected ownership level. As of December 30, 2017,February 15, 2022, all of our executive officers have met or exceeded the ownership expectations under the guidelines.

The following components satisfy the ownership guidelines: Equity interests owned directly or indirectly (e.g., by or with a spouse or held in trust for the individual or one or more family members of the individual), equity interests, including LP Unitslimited partnership interests (the “LP Units”) and unvested RSUs, held in qualified or nonqualified savings, profit sharing, or deferred compensation accounts, value of in-the-money spread of shares underlying vested but unexercised stock options and value of in-the-money spread of shares underlying


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vested but unexercised warrants. Annually,At least annually, the Human Capital and Compensation Committee monitors participants'participants’ compliance with these guidelines.

INCENTIVE COMPENSATION RECOUPMENT (“INCENTIVE CLAWBACK”) POLICIES
Our Board adopted a Policy for Clawback of Incentive Compensation Recoupment ("Clawback"(the “Policy”) because it believes that it is in the best interests of the Company and its stockholders to create and maintain a culture that emphasizes integrity and accountability and that reinforces the Company’s pay-for-performance compensation philosophy. This policy applies to any current and former “officer” of the Company, as such term is defined under Rule 16a-1(f) of the Exchange Act (the “Covered Executives”). The Policy applies to annual cash bonuses and equity incentive compensation (“Incentive Compensation”). Under the Policy, if the Company is required to prepare an accounting restatement of the reported financial results of the Company or any of its segments due to (a) the material non-compliance of the Company with any financial reporting requirement (unless due to a change in accounting policy or applicable law) and (b) intentional misconduct by a Covered Executive, then the Human Capital and Compensation Committee may require any Covered Executive to repay to the Company any “Excess Compensation.” Excess Compensation means that part of the Incentive Compensation received by a Covered Executive during the one-year period preceding the publication of the restated financial statement that the Committee determines was in excess of the amount that such Covered Executive would have received had such Incentive Compensation been calculated based on the financial results reported in the restated financial statement.

              Each

In addition, each of the RSU, stock option and performance unit award agreements under the Omnibus Incentive Plan generally provides that if a restrictive covenant violation occurs or the Company discovers after a termination of employment or services that grounds existed for "cause" (as“cause” ​(as defined in the Omnibus Incentive Plan) at the time thereof, then the participant shall be required, in addition to any other remedy available (on a non-exclusive basis), to pay to the Company, within ten business days of the Company'sCompany’s request to the participant therefor, an amount equal to the aggregate after-tax proceeds (taking into account all amounts of tax that would be recoverable upon a claim of loss for payment of such proceeds in the year of repayment) the participant received upon the sale or other disposition of, or distributions in respect of, the equity award thereunder and any shares issued in respect thereof (minus, in the case of options, the aggregate cost (if any) of the shares). Without limiting the foregoing, all awards are subject to reduction, cancellation, forfeiture or recoupment to the extent necessary to comply with applicable law. Our policy will be updated to comply with the SEC'sSEC’s final regulations as part of the Dodd-Frank Act.

Compensation Risk Assessment

Compensation Risk Assessment

Our governance policies and compensation structure are not reasonably likely to have a material adverse effect on the Company. The Independent Compensation Consultant and management delivered a compensation risk assessment report to the Human Capital and Compensation Committee in 2017.2021. The following features of our program mitigate risk:

[MISSING IMAGE: icon_blue-tick20.jpg]
GRAPHIC
The Human Capital and Compensation Committee consults with the Independent Compensation Consultant to assist with annual compensation decisions
GRAPHIC
[MISSING IMAGE: icon_blue-tick20.jpg]
The Human Capital and Compensation Committee approves the annual incentive plan'splan’s financial goals at the start of the fiscal year, and approves the performance achievement level and final payments earned at the end of the fiscal year
GRAPHIC
[MISSING IMAGE: icon_blue-tick20.jpg]
The Human Capital and Compensation Committee benchmarks total compensation opportunity for executive positions using multiple survey sources and has discretion over payout calculations and oversight of compensation plans for our executives
GRAPHIC
[MISSING IMAGE: icon_blue-tick20.jpg]
We utilize a mix of cash and equity variable incentive programs, with a balanced mix of stock options, RSUs and performance units, which are subject to multi-year vesting
GRAPHIC
[MISSING IMAGE: icon_blue-tick20.jpg]
Our performance units payout opportunities are capped at 200% of the target total opportunity
36 | SUMMIT MATERIALS2022 NOTICE OF ANNUAL MEETING AND PROXY STATEMENT


GRAPHIC
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We utilize competitive change-in-control severance programs to help ensure executives continue to work towards our stockholders'stockholders’ best interests in light of potential employment uncertainty
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Executive officers are subject to minimum stock ownership guidelines
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An incentiveIncentive clawback policy permitspolicies that permit the Company to recoup equity-basedannual cash bonuses and equity incentive compensation paid on the basis of financial results that are subsequently restated
2022 NOTICE OF ANNUAL MEETING AND PROXY STATEMENTSUMMIT MATERIALS | 37



Compensation Tables

Summary Compensation Table

Summary Compensation Table

The following table sets forth the compensation of our NEOs for the fiscal years ended 2017, 20162021, 2020 and 2015,2019, and their respective titles as of December 30, 2017.

January 1, 2022.
Name and Principal PositionYear
Salary
($)
Bonus
($)(1)
Stock
Awards
($)(2)
Option
Awards
($)
Non-Equity
Incentive Plan
Compensation
($)(3)
All Other
Compensation
($)(4)
Total
($)
Anne P. Noonan
President and Chief
Executive Officer, Director
2021952,7503,906,3921,411,29925,6636,296,104
2020418,931100,0002,660,726665,480132,5833,977,720
Brian J. Harris
Executive Vice President, Chief Financial Officer
2021619,0301,289,836489,80714,6682,413,341
2020601,0001,289,485599,15916,3642,506,008
2019583,4951,272,672442,98215,9642,315,113
Karli S. Anderson
Executive Vice President, Chief Environmental, Social & Governance Officer and Head of Investor Relations
2021349,365546,102237,91813,1291,146,514
Christopher B. Gaskill
Executive Vice President, Chief Legal Officer and Secretary
2021397,904705,775282,91013,8371,400,426
Deon MacMillan
Executive Vice President, Chief People Officer and Head of Corporate Communications
2021363,587300,000$512,903214,88012,7711,404,141
(1)
Name and Principal Position
Year
Salary
($)

Stock
Awards
($)(1)

Option
Awards
($)(2)

Non-Equity
Incentive Plan
Compensation
($)(3)

All Other
Compensation
($)(4)

Total
($)

Thomas W. Hill

       

2017826,9561,735,523620,7711,275,48016,1404,474,870

President and Chief

       

Executive Officer, Director

2016800,0005,039,3892,696,9401,367,52020,5419,924,390


2015

746,750

4,530,452

5,535,004

1,134,127

22,170

11,968,503

Michael J. Brady


 

 

 

 

 

 

 

2017425,000324,336116,014283,76411,0291,160,143

Chief Business

       

Development Officer

2016382,4541,405,378760,073290,97311,4952,850,373


2015

371,315

1,459,930

1,707,379

271,803

10,975

3,821,402

Brian J. Harris

       

2017550,000650,591232,706450,32610,4001,894,023

Chief Financial Officer

       

2016519,0451,347,477643,236469,08726,2613,005,106


2015

503,928

1,334,756

905,740

459,204

24,730

3,228,358

M. Shane Evans


 

 

 

 

 

 

 

2017420,787321,112114,863323,66914,0561,194,487

West Division President

       

Douglas C. Rauh


 

 

 

 

 

 

 

2017550,0001,264,5892,177,649437,95110,4004,440,589

Former Chief Operating Officer

       

2016519,0451,393,123739,563469,08746,1633,166,981


2015

503,928

1,113,297

1,150,299

459,204

34,121

3,260,849
The amount reported in the Bonus column for 2021 reflects the one-time cash sign-on bonus of $300,000 paid to Ms. MacMillan pursuant to her offer letter. The amount reported in the Bonus column for 2020 reflects the one-time cash sign-on bonus of $100,000 paid to Ms. Noonan pursuant to her offer letter.

(1)
(2)
The amounts reported in the Stock Awards column for 20172021 reflect the aggregate grant date fair value of stock awards granted in fiscal 2017,2021, calculated in accordance with ASC 718, utilizing the assumptions discussed in Note 13,Stock-Based Compensation, to our audited consolidated financial statements included in the 20172021 Annual Report. The fiscal 20172021 awards consist of time-vesting RSUs and performance units. As the performance units vest according to Relative TSR, they are subject to market conditions, and not performance conditions, as defined under ASC 718, and therefore have no maximum grant date fair values that differ from the grant date fair values presented in the table. As described in "Potential Payments Upon Termination or Change in Control—Departure of Douglas C. Rauh," on December 15, 2017, our Board amended the terms of Mr. Rauh's outstanding equity awards. Accordingly, the amount reported in this column for fiscal 2017 for Mr. Rauh includes the incremental fair value computed as of the modification date in accordance with ASC 718 with respect to his modified LP Units, RSUs and performance units, in the amounts of $52,483, $689,465 and $522,641, respectively.
(2)
The amounts reported in the Option Awards column for 2017 reflect the aggregate grant date fair value of the option awards granted in fiscal 2017, calculated in accordance with ASC 718, utilizing the assumptions discussed in Note 13,(3)
Stock-Based Compensation, to our audited consolidated financial statements included in the 2017 Annual Report. As described in "Potential Payments Upon Termination or Change in Control—Departure of Douglas C. Rauh," on December 15, 2017, our Board amended the terms of Mr. Rauh's outstanding equity awards. Accordingly, the amount reported in this column for fiscal 2017 for Mr. Rauh includes the incremental fair value computed as of the modification date in accordance with ASC 718 with respect to his modified Leverage Restoration Options and option awards, in the amounts of $1,802,383 and $375,266, respectively.
(3)
Reflects non-equity incentive plan compensation awards for services rendered during the fiscal year presented. For more information, see "Compensation“Compensation Discussion and Analysis—Compensation Elements—Annual Cash Incentives."
(4)

All Other Compensation includes the following items for 2017:2021: (a) amounts contributed by Summit LLC under the Summit Materials, LLC Retirement Plan, and (b) payments for term life and/or disability insurance.insurance, (c) amounts contributed by the Company to Health Savings Accounts (“HSAs”), and (d) amounts paid by the Company for the Executive Health Program. Amounts contributed to the Summit Materials, LLC Retirement Plan are matching contributions up to 4% of eligible compensation subject to IRS limitslimits. In 2021, Mss. Noonan, Anderson, and totaled $10,400 forMacMillan and Messrs. Harris and Gaskill each received a matching contribution of the NEOs in 2017.$11,600. Matching contributions are immediately vested. For more information, see "Compensation“Compensation Discussion and Analysis—Compensation Elements—Retirement, Perquisites, and Other Benefits." Payments for term life and/or disability insurance in 20172021 were as follows: Ms. Noonan, $14,063; Mr. Harris, $1,868; Ms. Anderson, $1,529; Mr. Gaskill, $1,637; and Ms. MacMillan, $1,171. Amounts contributed to HSAs in 2021 were as follows: Mr. Hill $5,740; Mr. Brady $629Harris, $1,200, and Mr. Evans $3,656.Gaskill, $600. No amounts were paid by the Company for the Executive Health Program in 2021.

Table of Contents

38 | SUMMIT MATERIALS2022 NOTICE OF ANNUAL MEETING AND PROXY STATEMENT


2021 Grants of Plan-Based Awards
2017 Grants of Plan-Based Awards

The following table provides supplemental information relating to grants of plan-based awards to help explain information provided above in our Summary Compensation Table.

NameAward Type
Grant
Date
Estimated Possible Payouts
under Non-Equity Incentive
Plan Awards(1)
Estimated Future Payouts
under Equity Incentive
Plan Awards(2)
All Other
Stock
Awards:
Number of
Shares
of Stock
or Units
(#)(3)
Grant
Date Fair
Value of
Stock
Awards
($)(4)
Threshold
($)
Target
($)
Maximum
($)
Threshold
(#)
Target
(#)
Maximum
(#)
Anne P. NoonanAnnual Cash Incentive14,2911,190,9382,203,234
Performance Units3/30/202125,41950,838101,6762,406,671
RSUs3/30/202150,8381,499,721
Brian J. HarrisAnnual Cash Incentive5,571464,273858,904
Performance Units3/30/20218,39316,78633,572794,649
RSUs3/30/202116,786495,187
Karli S. AndersonAnnual Cash Incentive2,700225,000416,250
Performance Units3/30/20213,5547,10714,214336,445
RSUs3/30/20217,107209,657
Christopher B. GaskillAnnual Cash Incentive3,024252,000466,200
Performance Units3/30/20214,5939,18518,370434,818
RSUs3/30/20219,185270,958
Deon MacMillan(5)Annual Cash Incentive2,618218,152403,581
RSUs3/10/202116,822512,903
(1)
 
  
  
  
  
  
  
  
  
 All Other
Stock
Awards:
Number
of Shares
of Stock
or Units
(#) (4)
 All Other
Option
Awards:
Number of
Securities
Underlying
Options
(#) (5)
  
  
 
 
  
  
 Estimated Possible Payouts
under Non-Equity Incentive
Plan Awards (1)
 Estimated Future Payouts
under Equity Incentive
Plan Awards (2)
 Exercise
or Base
Price of
Option
Awards
($/Sh)
 Grant Date
Fair Value
of Stock
and
Option
Awards
($) (6)
 
Name
 Award Type Grant
Date (3)
 Threshold
($)
 Target
($)
 Maximum
($)
 Threshold
(#)
 Target
(#)
 Maximum
(#)
 

Thomas W. Hill

 Annual Cash Incentive    18,524  1,157,738  2,026,042               

 Performance Units  2/28/2017        15,845  31,689  63,378        1,000,739 

 RSUs  2/28/2017              30,757      734,785 

 Stock Options  2/28/2017                51,261  23.89  620,771 

Michael J. Brady

 Annual Cash Incentive    4,080  255,000  446,250               

 Performance Units  2/28/2017        2,961  5,922  11,844        187,017 

 RSUs  2/28/2017              5,748      137,320 

 Stock Options  2/28/2017                9,580  23.89  116,014 

Brian J. Harris

 Annual Cash Incentive    6,600  412,500  721,875               

 Performance Units  2/28/2017        5,940  11,879  23,758        375,139 

 RSUs  2/28/2017              11,530      275,452 

 Stock Options  2/28/2017                19,216  23.89  232,706 

M. Shane Evans

 Annual Cash Incentive    4,040  252,472  454,450               

 Performance Units  2/28/2017        2,932  5,863  11,726        185,154 

 RSUs  2/28/2017              5,691      135,958 

 Stock Options  2/28/2017                9,485  23.89  114,863 

Douglas C. Rauh

 Annual Cash Incentive    6,600  412,500  721,875               

 Performance Units  2/28/2017        5,940  11,879  23,758        375,139 

 RSUs  2/28/2017              11,530      275,452 

 Stock Options  2/28/2017                19,216  23.89  232,706 

 Modified Awards:                                  

     Pre-IPO LP Units  12/15/2017              1,742      52,483 

     Pre-IPO Leverage Restoration Options  12/15/2017                147,805  18.00  1,802,383 

     Performance Units  12/15/2017        7,829  15,657  31,314        522,641 

     RSUs  12/15/2017              11,530      689,465 

     Stock Options  12/15/2017                19,216  23.89  375,266 

(1)
Reflects the possible payouts of cash incentive compensation under the Non-Equity Incentive Plan. Amounts reported in the "Threshold"“Threshold” column assume that there is no payout under the EBITDA, operating cash flow, or personal objectives components of the annual cash incentive program and that each NEO only earns the minimum payout for the one safety metric that has been assigned the lowest weighting. The actual amounts paid are described in the "Non-Equity“Non-Equity Incentive Plan Compensation"Compensation” column of the "Summary“Summary Compensation Table."
(2)

Reflects the performance units granted in 2017,2021, which have a three-year performance period ending December 31, 2019,2023, and vest based on Relative TSR.TSR and ROIC performance. Threshold assumes that 50% of the total performance units awarded vest and maximum assumes that 200% of the total performance units awarded vest. The amounts reported under "Modified Awards" for Mr. Rauh reflect his performance units that were modified on December 15, 2017 and remain outstanding as described in "Potential Payments Upon Termination or Change in Control—Departure of Douglas C. Rauh."
(3)
December 15, 2017 is the date that Mr. Rauh's LP Units, Leverage Restoration Operations, Performance Units, RSUs and Stock Options were modified as described in "Potential Payments Upon Termination or Change in Control—Departure of Douglas C. Rauh."
(4)

Reflects the RSUs granted in 2017 and the amounts reported under "Modified Awards" reflect Mr. Rauh's RSUs that were modified on December 15, 2017 as described in "Potential Payments Upon Termination or Change in Control—Departure of Douglas C. Rauh."
(5)
Reflects stock options granted in 2017 and the amounts reported under "Modified Awards" reflect Mr. Rauh's Leverage Restoration Options and stock options that were modified on December 15, 2017 as described in "Potential Payments Upon Termination or Change in Control—Departure of Douglas C. Rauh."
(6)
2021.
(4)
Represents the grant date fair value of the performance units RSUs and stock optionsRSUs granted in 2017 and the incremental fair value computed as of the modification date in connection with ASC 7182021 with respect to Mr. Rauh's LP Units, Leverage Restoration Operations, Performance Units, RSUs and Stock Options that were modified on December 15, 2017.the NEOs. The assumptions applied in determining the fair value of the awards are discussed in Note 13,Stock-Based Compensation, to our audited consolidated financial statements included in the 20172021 Annual Report.
(5)

Table

Narrative Disclosure to Summary Compensation Table and Grants of Plan-Based Awards Table

2022 NOTICE OF ANNUAL MEETING AND PROXY STATEMENTSUMMIT MATERIALS | 39



Employment Arrangements

              Messrs. Hill

Narrative Disclosure to Summary Compensation Table and Grants of Plan-Based Awards Table
Offers of Employment and Employment Arrangements
Mss. Anderson, MacMillian, and Noonan and Mr. Gaskill each has a signed offer of employment, and Mr. Harris each havehas an employment agreements and Messrs. Brady and Evans have signedagreement. The offers of employment. Their employment agreements and offers of employment agreement provide for base salary subject to annual adjustment by the Board, an annual incentive award, participation in Company-sponsored broad-based and executive benefit plans and such other compensation as may be approved by the Board. In connection with implementing the Executive Severance Plan Messrs. Hill and(the “Severance Plan”), Mr. Harris waived the provisions in theirhis employment agreements that would have applied under the conditions set forth in the Severance Plan, other than any provisions in theirhis employment agreements which were intended to survive the termination of suchhis employment agreements.

agreement.

Pursuant to Ms. MacMillan’s offer letter, her target annual cash bonus for 2021 was prorated for the period of time in which she was employed by the Company. In addition, Ms. MacMillan’s offer letter provided that Ms. MacMillan would receive a one-time cash sign-on bonus of $300,000 that is subject to recoupment upon termination by the Company for cause or resignation by Ms. MacMillan within twenty-four months of March 9, 2021. Ms. MacMillan’s offer letter also provided that she would receive an initial award of RSUs promptly following her start date. The RSUs had a value of $450,000 and vest as follows: (i) $150,000 to vest on the grant date, (ii) $175,000 to vest on the first anniversary of the grant date, and (iii) $125,000 to vest on the second anniversary of the grant date. Then, beginning in 2022, her annual target award will have a grant date fair value of 125% of her annual base salary.
Pre-IPO Long-Term Incentive Awards (Value From Modifications to Eliminate Misalignment Post-IPO)

Prior to the Company's IPOCompany’s initial public offering (“IPO”) in March 2015, the equity-based long-term incentive program consisted of Class D interests. In connection with the Company'sCompany’s IPO in March 2015, the limited partnership agreement of Summit Holdings was amended and restated to, among other things, modify its capital structure by creating LP Units (the "Reclassification"“Reclassification”). Immediately following the Reclassification, 69,007,297the LP Units were outstanding, which were reclassified from previously issued Class A-1, Class B-1, Class C, Class D-1 and Class D-2 interests. The Class A-1, Class B-1 and Class C interests, which were issued in respect of pre-IPO investments and not related to employee compensation, were fully vested as of the Reclassification. A portion, but not all, of the Class D-1 interests were vested, and none of the Class D-2 interests were vested. Accordingly, vested and unvested Class D interests were converted into vested and unvested LP Units, respectively. The vesting terms were substantially similar to those applicable to the unvested Class D interests immediately prior to the Reclassification. As of their respective grant date, approximately half of the Class D-1 interests were time-vesting interests and approximately half of the D-1 interests and all of the D-2 interests were performance-vesting interests.

In addition, in substitution for part of the economic benefit of the Class C and Class D interests that was not reflected in the conversion of such interests to LP Units, warrants were issued to holders of Class C interests to purchase an aggregate of 160,333 shares of Class A Common Stock, and options were issued to holders of Class D interests to purchase an aggregate of 4,358,842 shares of Class A Common Stock ("(“Leverage Restoration Options"Options”). The exercise price of the warrants and Leverage Restoration Options was the IPO price of $18.00 per share. The Leverage Restoration Options were granted under the Omnibus Incentive Plan. All Leverage Restoration Options vest over four years at a rate of 25% of the award on each of the first four anniversaries of the Reclassification, subject to the employee's continued employment through the applicable vesting date. The Leverage Restoration Options that correlated to performance-vesting interests vested only if both the relevant return multiple was achieved and the four year time-vesting condition was satisfied.


Table of Contents

              On August 9, 2016, our Board upon the recommendation of the Compensation Committee, determined that it was in the best interest of the Company and its stockholders to remove the 3.00 times investment return condition on the approximately 23% remaining pre-IPO performance-vesting LP Units and Leverage Restoration Options. As a result, all pre-IPO performance-vesting LP Units are now fully vested and the performance-vesting Leverage Restoration Options continue to be subject to the same four-year time vesting condition as the time-vesting Leverage Restoration Options.

              In 2018, a sub-committee of the Compensation Committee consisting of members that do not hold LP Units (the "Sub-Committee") determined that the administrative burden and costs associated with the monthly vesting of the remaining time-vesting LP Units outweighed any remaining retention incentive associated with the awards. As a result, the Sub-Committee determined it was appropriate to accelerate the vesting of all the remaining time-vesting LP Units held by our employees. The incremental fair value computed in accordance with FASB ASC Topic 718 with respect to this modification for each of the NEOs was not material.

All outstanding equity grants associated with the Reclassification and subsequent modifications are summarized in the table titled "Outstanding“Outstanding Equity Awards at 20172021 Fiscal Year-End."


Table of Contents

40 | SUMMIT MATERIALS2022 NOTICE OF ANNUAL MEETING AND PROXY STATEMENT


Outstanding Equity Awards at 2021 Fiscal Year-End
Outstanding Equity Awards at 2017 Fiscal Year-End

A summary of the outstanding equity awards for each NEO as of December 30, 2017January 1, 2022 is as follows:

follows in the below table.
Option AwardsStock Awards
NameGrant Date
Number of
Securities
Underlying
Unexercised
Options (#)
Exercisable
Number of
Securities
Underlying
Unexercised
Options (#)
Unexercisable
Equity Incentive
Plan Awards:
Number of
Securities
Underlying
Unexercised
Unearned
Options (#)
Option
Exercise
Price ($)
Option
Expiration
Date(1)
Number of
Shares or
Units of
Stock That
Have Not
Vested (#)
Market
Value of
Shares or
Units of
Stock That
Have Not
Vested
($)(2)
Equity Incentive
Plan Awards:
Number of
Unearned Shares,
Units or Other
Rights That Have
Not Vested (#)
Equity Incentive
Plan Awards:
Market or
Payout Value of
Unearned
Shares, Units or
Other Rights
That Have Not
Vested ($)(2)
Anne P. Noonan7/20/202042,577(3)1,709,041
7/20/2020139,046(4)5,581,306
3/30/202150,838(3)1,499,721
3/30/2021101,676(5)4,081,275
Brian J. Harris2/28/201719,216(6)23.892/28/2027
2/28/20199,820(3)394,175
2/28/202013,270(3)532,658
2/28/202039,810(4)1,597,973
7/30/202013,238(7)531,373
3/30/2021��16,786(3)673,790
3/30/202133,572(5)1,347,580
Karli S. Anderson9/30/20191,000(3)40,140
2/28/20204,402(3)176,696
7/30/20205,710(7)229,199
3/30/20217,107(3)285,275
3/30/202114,214(5)570,550
Christopher B. Gaskill2/28/20192,236(3)89,753
2/28/20205,384(3)216,114
7/30/20206,985(7)280,378
3/30/20219,185(3)368,686
3/30/202118,370(5)737,372
Deon MacMillan3/10/202111,215(8)450,170
(1)
 
 Option Awards Stock Awards 
Name
 Grant Date Number of
Securities
Underlying
Unexercised
Options
(#)
Exercisable
 Number of
Securities
Underlying
Unexercised
Options
(#)
Unexercisable
 Equity
Incentive
Plan
Awards:
Number of
Securities
Underlying
Unexercised
Unearned
Options
(#)
 Option
Exercise
Price
($)
 Option
Expiration
Date
(1)
 Number of
Shares or
Units of
Stock
That Have
Not Vested
(#)
 Market Value
of Shares
or Units
of Stock
That Have
Not Vested
($) (2)
 Equity
Incentive
Plan Awards:
Number of
Unearned
Shares, Units or
Other Rights
That Have Not
Vested
(#)
 Equity
Incentive
Plan Awards:
Market or
Payout Value
of Unearned
Shares, Units or
Other Rights
That Have Not
Vested
($) (2)
 

Thomas W. Hill

  3/11/15  293,055(3) 643,059    18.00  3/11/25         

  3/11/15  29,463(4)     18.00  3/11/25         

  2/24/16  23,980(6) 47,958    17.07  2/24/26         

  2/24/16            28,763(7) 904,309     

  2/24/16                44,452(8) 1,397,571 

  2/28/17    51,261(6)   23.89  2/28/27         

  2/28/17            30,757(7) 967,000     

  2/28/17                63,378(9) 1,992,604 

Michael J. Brady

  
3/11/15
  
203,536(3

)
 
203,536
     
18.00
  
3/11/25
  
  
  
  
 

  3/11/15  6,852(4)     18.00  3/11/25         

  3/11/15            1,655(5) 52,033     

  2/24/16  4,500(6) 8,998    17.07  2/24/26         

  2/24/16            5,397(7) 169,682     

  2/24/16                8,341 (8) 262,241 

  2/28/17    9,580(6)   23.89  2/28/27         

  2/28/17            5,748(7) 180,717     

  2/28/17                11,844(9) 372,375 

Brian J. Harris

  
3/11/15
  
116,380(3

)
 
116,380
  
  
18.00
  
3/11/25
  
  
  
  
 

  3/11/15            19,978(5) 628,108     

  2/24/16  9,465(6) 18,930    17.07  2/24/26         

  2/24/16            11,353(7) 356,938     

  2/24/16                17,546(8) 551,646 

  2/28/17    19,216(6)   23.89  2/28/27         

  2/28/17            11,530(7) 362,503     

  2/28/17                23,758(9) 746,952 

M. Shane Evans

  
3/11/15
  
116,241(3

)
 
123,443
  
  
18.00
  
3/11/25
  
  
  
  
 

  3/11/15            993(5) 31,220     

  2/24/16  4,718(6) 9,436    17.07  2/24/26         

  2/24/16            5,659(7) 177,919     

  2/24/16                8,756(8) 275,289 

  2/28/17    9,485(6)   23.89  2/28/27         

  2/28/17            5,691(7) 178,925     

  2/28/17                11,726(9) 368,665 

Douglas C. Rauh(10)

  
3/11/15
  
  
147,805(3

)
    
18.00
  
3/11/25
  
  
  
  
 

  3/11/15            1,742(5) 54,768     

  2/24/16    18,930(6)   17.07  2/24/26         

  2/24/16            11,353(7) 356,938     

  2/24/16                17,546(8) 551,646 

  2/28/17    19,216(6)   23.89  2/28/27         

  2/28/17            11,530(7) 362,503     

  2/28/17                23,758(9) 746,952 

(1)
Reflects the expiration date of the Leverage Restoration Options and stock options which is ten years from the date of grant. The warrants expire on the tenth anniversary of the pricing of the Company's IPO. See "Narrative“Narrative Disclosure to Summary Compensation Table and Grants of Plan-Based Awards Table—Pre-IPOPre IPO Long-Term Incentive Awards"Awards” for a description of these equity awards.
(2)

Amounts reported are based on the closing price of our Class A Common Stock on December 29, 201731, 2021 ($31.44)40.14), the last trading day of the fiscal year.
(3)

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(3)
Reflects Leverage Restoration Options that vest over four years at a rate of 25% of the award on each of the first four anniversaries of the Reclassification, subject to the employee's continued employment through the applicable vesting date.
(4)
Reflects warrants issued in connection with the Reclassification as described in "Narrative Disclosure to Summary Compensation Table and Grants of Plan-Based Awards Table—Pre-IPO Long-Term Incentive Awards." The warrants became exercisable on March 17, 2016.
(5)
Reflects time-vesting LP Units, 20% of which vest on the first anniversary of the legacy Class D-1 interests' grant date and the remaining 80% vest monthly over the four years following the first anniversary. As described in "Narrative Disclosure to Summary Compensation Table and Grants of Plan-Based Awards Table—Pre-IPO Long-Term Incentive Awards," all time-vesting LP Units are now fully vested.
(6)
Reflects stock options which vest over three years in equal annual installments on the anniversary of the grant date.
(7)
Reflects RSUs which vest over three years in equal annual installments on the anniversary of the grant date.
(8)
(4)
Reflects performance units which vest according to Relative TSR and ROIC performance at the end of a three-year performance period. In the table above, the number and market value of units that vest based on Relative TSR and ROIC performance reflect targetmaximum performance, because actual performance during the performance periods that have elapsed through December 30, 2017 was between threshold and target.January 1, 2022 were above target performance. The actual numbers of shares that will be distributed with respect to the 20162020 performance units are not yet determinable.
(9)
(5)
Reflects performance units which vest according to Relative TSR and ROIC performance at the end of a three-year performance period. In the table above, the number and market value of units that vest based on Relative TSR and ROIC performance reflect maximum performance, because actual performance during the performance periods that have elapsed through December 30, 2017 was betweenJanuary 1, 2022 were above target and maximum.performance. The actual numbers of shares that will be distributed with respect to the 20172021 performance units are not yet determinable.
(10)
As described
(6)
Reflects stock options which vest over three years in "Potential Payments Upon Termination or Changeequal annual installments on the anniversary of the grant date.
(7)
Reflects RSUs which vest over two years in Control—Departureequal annual installments on the anniversary of Douglas C. Rauh,"the grant date.
(8)
Reflects RSUs which vest as follows: (a) 58.33% vest on December 15, 2017, our Board amendedMarch 9, 2022, and (b) the terms of Mr. Rauh's outstanding equity awards.remaining vest on March 9, 2023.

2022 NOTICE OF ANNUAL MEETING AND PROXY STATEMENTSUMMIT MATERIALS | 41


2021 Option Exercises and Stock Vested
2017 Option Exercises and Stock Vested

The following table provides information regarding the amounts recognized by our NEOs upon the exercise of stock options and the vesting of stock awards during 2017.

2021. Our NEOs did not exercise any stock options during 2021.
Stock Awards
Name
Number
of Shares
Acquired on
Vesting (#)(1)
Value
Realized
on Vesting ($)(2)
Anne P. Noonan21,289684,228
Brian J. Harris34,4591,033,361
Karli S. Anderson8,912285,799
Christopher B. Gaskill28,248938,800
Deon MacMillan5,607170,957
(1)
 
 Option Awards Stock Awards 
Name
 Number of
Shares
Acquired
on
Exercise
(#)(1)
 Value
Realized
on
Exercise
($)(2)
 Number of
Shares
Acquired
on Vesting
(#)(3)
 Value
Realized
on
Vesting
($)(4)
 

Thomas W. Hill

  350,000  3,825,500  14,382  336,826 

Michael J. Brady

      3,940  97,818 

Brian J. Harris

      29,647  801,081 

M. Shane Evans

  7,200  69,120  3,575  87,047 

Douglas C. Rauh

  157,268  1,683,945  6,983  169,393 

(1)
Represents Leverage Restoration Options and stock options.
(2)
The value realized on exercise is based on the closing market price of our Class A common stock on the applicable exercise date minus the exercise price of the option.
(3)
Represents time-vesting LP UnitsRSUs and RSUs.
(4)
performance units.
(2)
The value realized on vesting is based on the closing market price of our Class A common stock on the applicable vesting date.

2021 Non-Qualified Deferred Compensation

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2017 Non-Qualified Deferred Compensation

The following table provides information regarding contributions, earnings and balances for our NEOs with respect to our DCP, the only defined contribution or other plan that provides for the deferral of compensation on a basis that is not tax-qualified.

Name
Executive
Contributions
in Last FY(1) ($)
Registrant
Contributions in
Last FY ($)
Aggregate
Earnings in
Last FY(2) ($)
Aggregate
Withdrawals/
Distributions ($)
Aggregate
Balance
at Last FYE(3) ($)
Brian J. Harris$309,515$388,618$2,571,833
(1)
Name
 Executive
Contributions
in Last FY(1)
($)
 Registrant
Contributions
in Last FY
($)
 Aggregate
Earnings in
Last FY(2)
($)
 Aggregate
Withdrawals/
Distributions
($)
 Aggregate
Balance at
Last FYE(3)
($)
 

Thomas W. Hill

  273,504    50,836    324,340 

Brian J. Harris

  275,000    64,515    520,283 

(1)
These amounts are also reported in the "Salary"“Salary” column for 20172021 in the "Summary“Summary Compensation Table."
(2)

Amounts in this column are not reported as compensation for fiscal 20172021 in the "Summary“Summary Compensation Table"Table” since they do not reflect above-market or preferential earnings.
(3)
Mr. Hill commenced participation in the DCP in fiscal 2017 and therefore no amounts in this column have previously been reported in the "Summary Compensation Table."
Mr. Harris commenced participation in the DCP in fiscal 2016 and $173,015300,500 was previously reported in the "Salary"“Salary” column for 2016 with respect to Mr. Harris2020 and $291,748 was previously reported in the "Summary“Salary” column for 2019 in the “Summary Compensation Table."

Pursuant to the DCP, an eligible participant may elect to defer up to 50% of such participant'sparticipant’s base salary compensation (in 5% increments) and up to 100% of such participant'sparticipant’s designated discretionary bonus award compensation and annual incentive award compensation (in 5% increments). Deferral elections are generally made by participants prior to the close of the taxable year preceding the taxable year for which the applicable compensation is earned. The DCP also permits Company-provided credits to participants'participants’ accounts, but no such credits are currently being made. Participants are permitted to make individual investment elections that will determine the rate of return on their deferral amounts under the DCP and may change their investment elections at any time. Deferrals are only deemed to be invested in the investment options selected. Participants have no ownership interest in any of the funds as investment elections are used solely to measure the amounts of investment earnings or losses that will be credited or debited to the participants'participants’ accounts on the Company'sCompany’s books and records. Investment funds are valued each day that the NYSE is open for trading. Participant deferrals under the DCP and the earnings thereon are always 100% vested.

The table below shows the funds in which our NEOs invested during 2017,2021, and their rate of return from January 1, 20172021 through December 31, 2017.

2021.
Name of Investment Fund
Rate of Return %

Alger Capital Appreciation Z

31.69Rate of Return %

Alger Capital Appreciation Z

17.93%
American Century Real Estate R41.82%
American Funds New World R6

33.0617.93%

Columbia Dividend Income Y

20.9526.45%

Fidelity Advisor International Discv Z

31.8811.26%

Janus Henderson Triton N

27.247.21%

Pioneer Bond K

0.96%
Undiscovered Managers Behavioral Val R6

13.5334.50%

Vanguard 500 Index Investor

Admiral
21.6728.66%

Vanguard Mid Cap Index Investor

Admiral
19.1224.51%

Vanguard Small Cap Index Fund

Admiral
16.1017.73%
42 | SUMMIT MATERIALS2022 NOTICE OF ANNUAL MEETING AND PROXY STATEMENT


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A DCP participant may elect, at the time of such participant'sparticipant’s deferral elections, to receive benefit distributions upon (i) separation from service with the Company or (ii) following the earlier of (a) a specified date that occurs no earlier than at least three years from the end of the calendar year in which the deferred compensation is credited or (b) separation from service with the Company. Additionally, a DCP participant may elect, at the time of such participant'sparticipant’s deferral elections, to receive benefit distributions in the form of (i) a single lump sum payment or (ii) for distributions following retirement, annual installments with an installment term of between two and 15 years. A participant may elect to change the benefit distribution date and/or form under certain circumstances specified in the DCP. In addition, in the event of certain unforeseeable emergencies, a participant may apply for immediate distribution in an amount necessary to satisfy such financial hardship and the tax liability attributable to such distribution. In the event of a participant'sparticipant’s death or disability, the entire value of such participant'sparticipant’s account will be distributed in a single lump sum.

Potential Payments Upon Termination or Change in Control

Potential Payments Upon Termination or Change in Control

EXECUTIVE SEVERANCE PLAN

Executive Severance Plan

The Board, upon the recommendation of the Human Capital and Compensation Committee, adopted the Severance Plan in December 2017, which provides severance benefits to certain executive officers of the Company and its affiliates in the event that an eligible employee experiences a termination of employment by the Company without "cause" (and“cause” ​(and other than due to death or disability) or by the employee as a result of a "constructive termination" (as“constructive termination” ​(as such terms are defined in the Severance Plan) (each, a "Qualifying Termination"“Qualifying Termination”). In the event that a Qualifying Termination occurs during the two-year period beginning on the date of a change in control (each such termination, a "Qualifying“Qualifying Change in Control Termination"Termination”), the Severance Plan provides enhanced severance benefits. In connection with implementing the Severance Plan, all participants in the Severance Plan waived the provisions of any applicable employment agreement that would have applied under the conditions set forth under the Severance Plan, other than any provisions in such employment agreements which were intended to survive the termination of such employment agreement.

Each participant in the Severance Plan (a "Participant"“Participant”) is designated as a Tier 1 Participant or Tier 2 Participant. Tier 1 Participants are limited to the Chief Executive Officer. Tier 2 Participants are limited to Executive Vice Presidents. Accordingly, Mr. HillMs. Noonan is a Tier 1 Participant and Mess. Anderson and MacMillan and Messrs. Brady,Gaskill and Harris and Evans are each Tier 2 Participants.

In the event of a Qualifying Termination, Participants are provided with the following payments and benefits:


a pro-rata payment representing the amount otherwise payable under the annual bonus program for the fiscal year in which termination of the Participant'sParticipant’s employment occurs, based on actual performance and payable concurrently with cash bonus payments to other employees (but in all events on or about March 15 of the immediately following fiscal year) (a "Pro-Rata Bonus"“Pro-Rata Bonus”), and to the extent not previously paid, the amount otherwise payable under the annual bonus program for the immediately preceding fiscal year, payable concurrently with cash bonus payments to other employees (a "Prior“Prior Year Bonus"Bonus”);


a cash payment of (i) for a Tier 1 Participant, of 2.5 times the Participant'sParticipant’s annual base salary, payable over a period of 30 months, and (ii) for a Tier 2 Participant, of 2 times the Participant'sParticipant’s annual base salary, payable over a period of 24 months; and

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    a cash payment, payable monthly in accordance with the Company’s payroll practices, (i) for a Tier 1 Participant, for up to 30 months, and (ii) for a Tier 2 Participant, for up to 24 months, in each case in an amount equal to the total amount of the monthly COBRA insurance premiums for participation in the life, health, dental and disability benefit programs of the Company in which the Participant participated as of the date of termination payable monthly in accordance with the Company's payroll practices, (i) for a Tier 1 Participant, for up to 30 months, and (ii) for a Tier 2 Participant, for up to 24 months (the "COBRA Benefits"“COBRA Benefits”).

In the event of a Qualifying Change in Control Termination, Participants are provided with the following payments and benefits:


a Pro-Rata Bonus, and, if applicable, a Prior Year Bonus;


a cash payment of (i) for a Tier 1 Participant, 2.5 times the sum of the Participant'sParticipant’s annual base salary and target annual bonus, and (ii) for a Tier 2 Participant, 2 times the sum of the Participant'sParticipant’s annual base salary and target annual bonus, in each case of (i) and (ii), payable in a lump sum no later than the 60th day following the date of termination; and


the COBRA Benefits.

The payments and benefits provided under the Severance Plan are subject to each Participant'sParticipant’s execution and delivery of a release of claims and each Participant'sParticipant’s compliance with non-competition, non-disparagement, non-solicitation and confidentiality covenants applicable pursuant to each Participant'sParticipant’s Participation Notice and Agreement under the Severance Plan. The non-disparagement and confidentiality covenants each have an indefinite term and the non-competition and non-solicitation covenants each have a term of 1224 months following the Participant'sParticipant’s date of termination (18 months for Mr. Hill).termination. Additionally, the Severance Plan provides that if a Participant is subject to an excise tax under Section 4999 of the Code, then the payments and benefits the Participant receives may be reduced so that the excise tax does not apply; however, such reduction will only occur if it results in the receipt of a greater after-tax severance than would otherwise be provided.

2022 NOTICE OF ANNUAL MEETING AND PROXY STATEMENTSUMMIT MATERIALS | 43


Treatment of Long-Term Incentive Awards Upon Termination or Change in Control

Each of the RSUs stock options and performance units granted in 20172021 is subject to restrictive covenants related to post-employment (i) employee, client and consultant non-solicitation and (ii) non-competition, in each case for 12 months following any termination of employment and indefinite covenants covering confidentiality and non-disparagement (participant only). Further, the equity awards and all proceeds therefrom are generally subject to the Company'sCompany’s incentive clawback policy,policies, as in effect from time to time, to the extent the participant is a director or "officer"“officer” as defined under Rule 16a-1(f) of the


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Exchange Act. Additional provisions regarding the treatment of the equity awards upon a termination of employment are outlined in the table below.

Award Type
Termination or Change in Control Provisions
Stock Options(1)
Stock Options


Death or Disability: Unvested portion will immediately vest; vested stock options remain exercisable for one year thereafter.(1)

(2)


Retirement(2)(3): Unvested portion will continue to vest according to the original vesting schedule; vested stock options remain exercisable for five years after the later of (i) the termination date and (ii) the date the option becomes vested and exercisable.


Constructive Termination(3)(4) / By the Company Without Cause: Prorated portion of the number of options that would otherwise vest on the next applicable vesting date will immediately vest(4)(5); vested stock options remain exercisable for three months thereafter.


Change in Control: Accelerated only if (i) not continued, converted, assumed, or replaced by the Company or successor entity or (ii) employment is terminated by the Company or successor entity without cause or by the participant as a result of a "constructive termination"“constructive termination” during the two-year period following a change in control; vested stock options remain exercisable for three months thereafter.


By the Company For Cause / by Participant When Grounds for Cause Exist: Vested and unvested portions are forfeited.

RSUs


Death or Disability: Unvested portion will immediately vest.


Retirement: Unvested portion will continue to vest according to the original vesting schedule.schedule (solely if such retirement occurs on or following the first anniversary of the vesting start date).


Constructive Termination / By the Company Without Cause: Prorated portion of the number of RSUs that would otherwise vest on the next applicable vesting date will immediately vest.


Change in Control: Accelerated only if (i) not continued, converted, assumed, or replaced by the Company or successor entity or (ii) employment is terminated by the Company or successor entity without cause or by the participant as a result of a "constructive termination"“constructive termination” during the two-year period following a change in control.


By the Company For Cause: Vested and unvested portions are forfeited.


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Award Type
Termination or Change in Control Provisions
Performance Units


Death or Disability(5)(6): Prorated portion will vest at the end of the performance period, based on actual performance.


Retirement: Prorated portion will vest at the end of the performance period, based on actual performance.performance (solely if such retirement occurs on or following the first day of the performance period).


Constructive Termination / By the Company Without Cause: Prorated portion will vest at the end of the performance period, based on actual performance.


Change in Control: (i) Full vesting at target only if not continued, converted, assumed, or replaced by the Company or successor entity and (ii) pro-rata vesting at target if employment is terminated by the Company or successor entity without cause or by the participant as a result of a "constructive termination"“constructive termination” during the two-year period following a change in control.


By the Company For Cause: Vested and unvested portions are forfeited.

Pre-IPO Leverage Restoration
Options

Death or Disability:    Unvested portion is forfeited; vested stock options remain exercisable for one year thereafter.

Retirement:    Unvested portion is forfeited; vested stock options remain exercisable for three months thereafter.

Constructive Termination / By the Company Without Cause:    Unvested portion is forfeited; vested stock options remain exercisable for three months thereafter.

Change in Control:    Unvested portion will immediately vest.

By the Company For Cause / by Participant When Grounds for Cause Exist:    Vested and unvested portions are forfeited.

Pre-IPO LP Units

Death or Disability:    Unvested portion is forfeited.

Retirement:    Unvested portion is forfeited.

Constructive Termination / By the Company Without Cause:    Unvested portion is forfeited.

Change in Control:    Unvested portion will immediately vest.

By the Company For Cause:    Unvested portion is forfeited.


(1)

All outstanding stock options are fully vested.
(2)
Stock options do not remain exercisable past the original expiration date. In addition, the exercisability period expires immediately upon the occurrence of a "restrictive“restrictive covenant violation" (asviolation” ​(as defined in the award agreement).
(2)
"Retirement"
(3)
“Retirement” is generally defined in the equity awards as termination of employment, other than for cause or while grounds for cause exist, and other than due to the participant'sparticipant’s death or disability, following the date on which (i) the participant attains age 62 and (ii) the number of completed years of employment with the Company and its affiliates is at least five. For stock options and RSUs, continuation of vesting after termination of employment is subject to the non-occurrence of a "restrictive“restrictive covenant violation."
(3)
"
44 | SUMMIT MATERIALS2022 NOTICE OF ANNUAL MEETING AND PROXY STATEMENT


(4)
Constructive termination"termination” is generally defined in the equity awards as (i) having the meaning set forth in any employment agreement entered into by and between the participant and the Company or an affiliate, or (ii) if no such agreement exists, any of the following, without the participant'sparticipant’s prior written consent: (a) a material reduction in base salary or, to the extent applicable, target bonus opportunity (other than in connection with an across-the-board reduction in compensation of similarly-situated employees of, on an individual-by-individual basis, less than 10%), (b) a material diminution of authority, duties, or responsibilities, (c) a relocation of the participant'sparticipant’s primary place of business by more than 50 miles from its then-current location, or (d) any material breach by the Company of any written agreement relating to the participant'sparticipant’s compensation (including any equity awards). "Constructive termination"“Constructive termination” provisions are limited to the Chief Executive Officer and hisher direct reports.
(4)
reports and other Section 16 officers.
(5)
Prorated based on the number of days in the applicable year or in the performance period, as applicable, that have elapsed prior to termination of employment.
(5)
(6)
Vesting of the prorated portion at the end of the performance period is subject to the non-occurrence of a "restrictive“restrictive covenant violation," in the case of each applicable termination scenario.

TERMINATION BENEFITS TABLE

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Termination Benefits Table

The following table describes the potential payments and benefits under the Company'sCompany’s Severance Plan and equity award agreements to which the NEOs would have been entitled assuming an eligible termination of employment or change in control occurred on December 29, 2017,31, 2021, the last business day of fiscal 2017.2021. A description of the provisions governing such payments under our agreements and any material conditions or obligations applicable to the receipt of payments are described above under "Executive“Executive Severance Plan"Plan” and "Treatment“Treatment of Long-Term Incentive Awards Upon Termination or Change in Control."

The amounts shown in the table do not include payments and benefits to the extent they are provided generally to all salaried employees upon termination of employment and do not discriminate in scope, terms or operation in favor of the NEOs. These include accrued but unpaid salary and distributions of vested plan balances under our 401(k) savings plans.

Acceleration of Long-Term Incentive Awards
Named Executive Officer
Cash
Severance
Payment
($)(1)
Pro-rata
Bonus
($)(2)
COBRA
Benefit
($)(3)
RSUs
($)
Stock
Options
($)(*)
Performance
Units
($)(4)
Total
($)
Anne P. Noonan
Qualifying Termination2,381,8751,244,530922,8944,549,299
Qualifying Change in Control Termination5,359,2191,244,5303,749,6784,831,29115,184,718
Change in Control3,749,6784,831,2918,580,969
Termination Upon Death or Disability3,749,6783,749,678
Brian J. Harris
Qualifying Termination1,238,060485,16539,186960,4942,722,905
Qualifying Change in Control Termination2,166,605485,16539,1862,135,6093,837,8268,664,391
Change in Control2,135,6093,837,8265,973,435
Termination Upon Death or Disability2,135,6092,135,609
Karli S. Anderson
Qualifying Termination750,000219,05270,629261,7461,301,427
Qualifying Change in Control Termination1,200,000219,05270,629731,311285,2752,506,267
Change in Control731,311285,2751,016,586
Termination Upon Death or Disability731,311731,311
Christopher B. Gaskill
Qualifying Termination840,000249,48619,103384,0781,492,667
Qualifying Change in Control Termination1,344,000249,48619,103954,931368,6862,936,206
Change in Control954,931368,6861,323,617
Termination Upon Death or Disability954,931954,931
Deon MacMillan
Qualifying Termination900,000227,969125,0471,253,016
Qualifying Change in Control Termination1,440,000227,969450,1702,118,139
Change in Control450,170450,170
Termination Upon Death or Disability450,170450,170
2022 NOTICE OF ANNUAL MEETING AND PROXY STATEMENTSUMMIT MATERIALS | 45


 
  
  
  
 Acceleration of Long-Term Incentive Awards  
 
Named Executive Officer
 Cash
Severance
Payment
($)(1)
 Pro-rata
Bonus
($)(2)
 COBRA
Benefit
($)(3)
 Pre-IPO
LP Units
($)
 Pre-IPO
Leverage
Restoration
Options
($)
 RSUs
($)
 Stock
Options
($)
 Performance
Units
($)(4)
 Total 

Thomas W. Hill

                            

Qualifying Termination

  2,067,390  1,275,480  57,071      645,406  394,654    5,570,823 

Qualifying Change in Control Termination

  4,961,738  1,275,480  57,071    8,642,713  1,871,309  1,076,177  2,393,873  20,278,361 

Change in Control

          8,642,713  1,871,309  1,076,177  2,393,873  13,984,072 

Termination Upon Death or Disability(5)

            1,871,309  1,076,177    4,078,308 

Michael J. Brady

  
 
  
 
  
 
  
 
  
 
  
 
  
 
  
 
  
 
 

Qualifying Termination

  850,000  283,764  45,657      120,900  73,967    1,586,265 

Qualifying Change in Control Termination

  1,360,000  283,764  45,657    2,735,524  350,399  201,630  448,429  5,425,403 

Change in Control

    ��      2,735,524  350,399  201,630  448,429  3,735,982 

Termination Upon Death or Disability(5)

            350,399  201,630    764,006 

Brian J. Harris

  
 
  
 
  
 
  
 
  
 
  
 
  
 
  
 
  
 
 

Qualifying Termination

  1,100,000  450,326  37,821      249,420  153,644    2,432,071 

Qualifying Change in Control Termination

  1,925,000  450,326  37,821    1,564,147  719,442  417,105  925,122  6,038,963 

Change in Control

          1,564,147  719,442  417,105  925,122  3,625,816 

Termination Upon Death or Disability(5)

            719,442  417,105    1,577,407 

M. Shane Evans

  
 
  
 
  
 
  
 
  
 
  
 
  
 
  
 
  
 
 

Qualifying Termination

  841,574  323,669  45,657      123,834  76,390    1,630,348 

Qualifying Change in Control Termination

  1,346,518  323,669  45,657    1,659,074  356,844  207,207  459,276  4,398,245 

Change in Control

          1,659,074  356,844  207,207  459,276  2,682,401 

Termination Upon Death or Disability(5)

            356,844  207,207    783,275 
(*)

As of December 31, 2021, all outstanding stock options were fully vested.
(1)

In the event of a "constructive termination"“constructive termination” or termination by the Company without "cause" (each“cause” ​(each term as defined in the Severance Plan), the cash severance payment includes the following:
Mr. Hill –
Ms. Noonan—a cash payment of 2.5 times hisher annual base salary, payable over a period of 30 months.

Messrs. Brady, Harris and Evans – Gaskill and Mss. Anderson and MacMillan—a cash payment of 2 times each NEO'sNEO’s annual base salary, payable over a period of 24 months.

In the event of a constructive termination or termination by the Company without cause during the two-year period beginning on the date of a change in control of the Company, the cash severance payment includes the following:


Mr. Hill – Ms. Noonan—a cash payment payable in a lump sum no later than the 60th day following the date of termination equal to 2.5 times the sum of hisher annual base salary and target annual bonus for 2017.2021.

Messrs. Brady, Harris and Evans – Gaskill and Mss. Anderson and MacMillan—a cash payment payable in a lump sum no later than the 60th day following the date of termination equal to 2 times the sum of each NEOs annual base salary and target annual bonus for 2017.2021.
(2)

Pro-rata bonus represents the amount otherwise payable under the annual bonus program for the fiscal year in which termination of the Participant'sParticipant’s employment occurs, based on actual performance and payable concurrently with cash bonus payments to other employees (but in all events prior to March 15 of the immediately following fiscal year).
(3)

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(3)
COBRA benefit represents a cash payment in an amount equal to the total amount of the monthly COBRA insurance premiums for participation in the life, health, dental and disability benefit programs of the Company in which the NEO participated as of the date of termination, payable monthly in accordance with the Company'sCompany’s payroll practices. The terms of these payments are the following:
Mr. Hill –
Ms. Noonan—for up to 30 months.

Messrs. Brady, Harris and Evans – Gaskill and Mss. Anderson and MacMillan—for up to 24 months.
(4)

In the event of a Qualifying Change in Control Termination or a Change in Control, the amount reported assumes performance units are not continued, converted, assumed, or replaced by the Company or successor entity and therefore reflects full vesting at target.
(5)
In addition, the event ofamount reported assumes that the death of Messrs. Hill and Evans, in addition to amounts reported inCompensation Committee had not yet certified the table above, Messrs. Hill and Evans will receive benefits from third-party payors under our employer-paid premium life insurance plans. If such benefits were triggered for Messrs. Hill and Evans on December 29, 2017 under our life insurance plans the legally designated beneficiary(ies) of Messrs. Hill and Evans would have received $1,500,000 and $952,000, respectively.

Departure of Douglas C. Rauh

              In connection with the departure of Douglas C. Rauh, effective December 30, 2017, Mr. Rauh entered into the Agreement and Release with Summit Holdings and, solely for certain purposes specified therein, the Company, which provided for the following:

    the payment of $1,100,000, payable in regular installments in accordance with Summit Holdings' normal payroll practices through December 31, 2019, representing 2 times his base salary for 2017;

    the payment of $437,951, payable in accordance with Summit Holdings' normal payroll practices for annual bonuses, without regard to his departure date, representing his annual bonus with respect to fiscal year 2017;

    monthly COBRA health continuation coverage premiums for up to 24 months following his departure date having an aggregate value equal to $28,872;

    continued vesting of all outstanding unvested equity awards other than his performance units through the end of the Rauh Consulting Term (defined below); and

    accelerated vesting, as of the last day of the Rauh Consulting Term, of all outstanding unvested equity awards other than his performance units, so long as the Rauh Consulting Term has not been voluntarily terminated by Mr. Rauh. Any accelerated options will not be exercisable prior to the date such options would have otherwise vested in accordance with the terms of the original award agreement, and will be exercisable for 90 days after such date, after which such options will be forfeited. A prorated portion of Mr. Rauh's outstanding performance units will remain eligible to vest at the end of the performance units with a performance period of 2019—2021, which subsequently resulted in accordance with their terms, based on actual performance.

              The payments and benefits provided for in the Agreement and Release were subjecta payout equal to Mr. Rauh's execution and delivery200% of a release of claims and his continued compliance with the non-competition, non-disparagement, non-solicitation and confidentiality covenants contained in his employment agreement. The non-disparagement and confidentiality covenants each have an indefinite term and the non-competition and non-solicitation covenants each have a term of 12 months following Mr. Rauh's departure.

target.

Table of ContentsChief Executive Officer Pay Ratio

              Additionally, pursuant to the Agreement and Release, beginning on January 1, 2018, Mr. Rauh agreed to provide Summit Holdings with consulting services on a month-to-month basis, unless terminated earlier by either party with 10 business days' prior written notice (such applicable term, the "Rauh Consulting Term"). During the Rauh Consulting Term, Mr. Rauh will be entitled to (i) a monthly consulting fee of $15,000 and (ii) reimbursement of reasonable business expenses and wireless internet and cellular phone expenses incurred by Mr. Rauh in connection with his consulting services.

CEO Pay Ratio

The CEOChief Executive Officer pay ratio figuresfigure below areis a reasonable estimate calculated in a manner consistent with Item 402(u) of Regulation S-K under the Exchange Act.

              We determined that Last year, we identified our median employee using our global employee population as of December 5, 2017,31, 2020. There was no significant change in our total number of full-employee population or compensation arrangement in 2021, and part-time U.S. employees was 5,642 and non-U.S. employees was 265. We chose not to exclude any countries as permitted by SEC regulations, which resulted in 5,907 employees includedthere have been no changes in the calculation.

median employee’s circumstances during 2021, that we reasonably believe would result in a significant change in our pay ratio disclosure. Accordingly, we have used the same median employee we identified last year for purposes of calculating our CEO pay ratio for 2021. To determine our median employee pay last year, we chose taxable wages as our consistently applied compensation measure. We then calculated an annual taxable wage for each employee, annualizing pay for those full-time or part-time permanent employees who commenced work during 2017 or who were on leave for a portion of 2017. We used a valid statistical sampling methodmeasure in order to identify the group of employees within a 5% range of the estimated median level of taxable wages for our employee population. The historical compensation of this group was then analyzed to identify a median employee whoseas of December 31, 2020.

We calculated the median employee’s annual total compensation was reasonably representative of the median annual total compensation in respect of 2017 and was also reasonably likely to remain representative of the median in future years. After identifying the median employee, we calculated the median employee's annual total compensationfor 2021 in accordance with the requirements of the Summary Compensation Table. For 2017,2021, the median employee'semployee’s annual total compensation was $56,523$40,006 and the annual total compensation of our CEO was $4,490,470, which amount varies from his total compensation amount as reflected in the Summary Compensation Table because each of these amounts includes the value of non-discriminatory employer paid health benefits.$6,296,104. Accordingly, for 2017,2021, the ratio of CEO pay to median employee pay was 79:157:1.

This pay ratio is a reasonable estimate calculated in a manner consistent with SEC rules and the methodology described above. The SEC rules for identifying the median compensated employee and calculating the pay ratio based on such employee'semployee’s annual total compensation allow companies to adopt a variety of methodologies, to apply certain exclusions, and to make reasonable estimates and assumptions that reflect their compensation practices. As such, the pay ratio reported by other companies may not be comparable to the pay ratio reported above, as other companies may have different employment and compensation practices and may utilize different methodologies, exclusions, estimates and assumptions in calculating their own pay ratios.

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OUR AUDITORS
ITEM 4
RATIFICATION OF APPOINTMENT OF
KPMG LLP
Under the rules and regulations of the SEC, the NYSE and the Public Company Accounting Oversight Board (the “PCAOB”), the Audit Committee is directly responsible for the appointment, compensation, retention and oversight of our independent registered public accounting firm. In addition, the Audit Committee considers the independence of our independent registered public accounting firm and participates in the selection of the independent registered public accounting firm’s lead engagement partner. The Audit Committee has appointed, and, as a matter of good corporate governance, is requesting ratification by our stockholders of the appointment of, the registered public accounting firm of KPMG to serve as independent registered public accounting firm for the fiscal year ending December 31, 2022. KPMG has served as our independent registered public accounting firm since 2012.
The Board and the Audit Committee believe that the continued retention of KPMG as the Company’s independent registered public accounting firm is in the best interests of the Company and its stockholders. If stockholders do not ratify the selection of KPMG, the Audit Committee will evaluate the stockholder vote when considering the selection of a registered public accounting firm for the audit engagement for the 2021 fiscal year. In addition, even if stockholders ratify the selection of KPMG as independent registered public accounting firm, the Audit Committee may nevertheless periodically request proposals from the major registered public accounting firms and as a result of such process may select KPMG or another registered public accounting firm as our independent registered public accounting firm.
THE BOARD RECOMMENDS A VOTE “FOR” RATIFICATION
OF THE APPOINTMENT OF KPMG AS OUR INDEPENDENT
REGISTERED PUBLIC ACCOUNTING FIRM FOR THE FISCAL
YEAR ENDING DECEMBER 31, 2022.
2022 NOTICE OF ANNUAL MEETING AND PROXY STATEMENTSUMMIT MATERIALS | 47


INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM
TableRepresentatives of ContentsKPMG are expected to attend the Annual Meeting and will have an opportunity to make a statement and to respond to appropriate questions from stockholders.

Consistent with SEC and PCAOB requirements regarding auditor independence, the Audit Committee has responsibility for appointing, setting compensation for and overseeing the work of, the independent registered public accounting firm. In recognition of this responsibility, the Audit Committee has established a policy to pre-approve all audit and permissible non-audit services provided by the independent registered public accounting firm.
Prior to engagement of the independent registered public accounting firm for the next year’s audit, management will submit to the Audit Committee for approval a list of services and related fees expected to be rendered during that year within each of the following four categories of services:

Audit services include audit work performed on the financial statements and internal control over financial reporting, as well as work that generally only the independent registered public accounting firm can reasonably be expected to provide, including comfort letters, statutory audits and discussions surrounding the proper application of financial accounting and/or reporting standards.

Audit-Related services are for assurance and related services that are traditionally performed by the independent registered public accounting firm, including due diligence related to mergers and acquisitions, employee benefit plan audits and special procedures required to meet certain regulatory requirements.

Tax services include all services, except those services specifically related to the financial statements, performed by the independent registered public accounting firm’s tax personnel, including tax analysis; assisting with coordination of execution of tax-related activities, primarily in the area of corporate development; supporting other tax-related regulatory requirements; tax planning; and tax compliance and reporting.

All Other services are those services not captured in the Audit, Audit-Related or Tax categories.
Prior to engagement, the Audit Committee pre-approves independent registered public accounting firm services within each category and the fees of each category are budgeted. The Audit Committee requires the independent registered public accounting firm and management to report actual fees versus the budget periodically throughout the year by category of service. During the year, circumstances may arise when it may become necessary to engage the independent registered public accounting firm for additional services not contemplated in the original pre-approval categories. In those instances, the Audit Committee requires specific pre-approval before engaging the independent registered public accounting firm.
The Audit Committee may delegate pre-approval authority to one or more of its members. The member to whom such authority is delegated must report, for informational purposes only, any pre-approval decisions to the Audit Committee at its next scheduled meeting. All of the services in the table below were pre-approved by the Audit Committee.
(in thousands)20212020
Audit Fees(1)$3,640$3,750
Tax Fees
Audit-Related Fees
All Other Fees
Total$3,640$3,750
(1)
Represents the aggregate fees billed for professional services by KPMG for the audit of our financial statements, reviews of our quarterly financial statements and services associated with other SEC filings, including registration statements. Fees related to regulatory filings and comfort letters totaled 24,860 in 2021 and fees related to registration statement totaled $99,460 in 2020.
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Director CompensationAUDIT COMMITTEE REPORT

The Audit Committee reviews the Company’s financial reporting process on behalf of the Board. Management has the primary responsibility for establishing and maintaining adequate internal control over financial reporting, for preparing the financial statements, and for the reporting process. The Audit Committee members do not serve as professional accountants or auditors, and their functions are not intended to duplicate or to certify the activities of management and the independent registered public accounting firm. The Company’s independent registered public accounting firm is engaged to audit and report on the conformity of the Company’s financial statements to accounting principles generally accepted in the United States and the effectiveness of the Company’s internal control over financial reporting.
In this context, the Audit Committee reviewed and discussed with management and the independent registered public accounting firm the audited financial statements for the year ended January 1, 2022 (the “Audited Financial Statements”), management’s assessment of the effectiveness of the Company’s internal control over financial reporting, and the independent registered public accounting firm’s evaluation of the Company’s system of internal control over financial reporting. The Audit Committee has discussed with the independent registered public accounting firm the matters required to be discussed by Public Company Accounting Oversight Board (the “PCAOB”) Auditing Standard No. 1301, Communications with Audit Committees. In addition, the Audit Committee has received the written disclosures and the letter from the independent registered public accounting firm required by applicable requirements of the PCAOB regarding the independent registered public accounting firm’s communications with the Audit Committee concerning independence, and has discussed with the independent registered public accounting firm its independence.
Based upon the reviews and discussions referred to above, the Audit Committee recommended to the Board that the Audited Financial Statements be included in the Company’s Annual Report on Form 10-K for the year ended January 1, 2022, for filing with the Securities and Exchange Commission.
The Audit Committee
Joseph S. Cantie
Susan A. Ellerbusch
John R. Murphy, Chair
Anne K. Wade

              Prior to 2017, we only paid compensation to directors who were not employed by us or Blackstone. Following the November 2016 secondary offering of Blackstone's shares of our Class A Common Stock, Blackstone ceased to hold any LP Units or shares of our Class A Common Stock. In connection with Blackstone's exit, the Board determined it was appropriate to begin paying compensation to directors who are employed by Blackstone, commencing with fiscal 2017.

              In 2017, all of the Company's non-employee directors (other than Ms. Julia Kahr) received annual cash compensation of $100,009. Ms. Kahr received cash compensation of $16,667 for her service prior to her resignation from the Board effective February 28, 2017. The chairperson of the Board received an additional $150,000 in cash compensation and the respective chairpersons of the Audit Committee, Compensation Committee and Nominating and Corporate Governance Committee (unless such chairperson is also the chairperson of the Board) receive an additional $15,000, $10,000 and $10,000, respectively. Directors who were not employed by us may also receive compensation, from time to time, for service on any special committees of the Board. We reimburse our directors for any reasonable expenses incurred by them in connection with services provided in such capacity.

              In addition, during 2017, all of the Company's non-employee directors (other than Ms. Kahr) received an annual award of RSUs valued at $99,991. A grant of 4,098 RSUs was made to each of Messrs. Lance, Cantie, Gardner, Murphy, Simpkins, and Wunning and Ms. Wade, on February 28, 2017. The RSUs were granted under the Omnibus Incentive Plan, and the terms thereof are outlined in the table below. Further, the RSU awards are subject to the Company's clawback policy, as in effect from time to time.

Award TypeVestingTermination or Change in Control Provisions
RSUsVest on the first
anniversary of the date of
grant

Death or Disability / By the Company Without Cause:    Unvested portion will immediately vest.

Retirement(1) / Declining to Stand for Re-election to Our Board(2):    Prorated portion immediately vests; settled at such time as would have been settled according to the original vesting schedule.

Change in Control:    Accelerated only if not continued, converted, assumed or replaced by the Company or successor entity.

By the Company For Cause:    Vested and unvested portions are forfeited.

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(1)
"Retirement" is defined in the director form of RSU award agreement as a director's resignation from service on our Board (other than due to death or disability or termination by the Company without cause) prior to the expiration of such director's term and on or after the date such director attains age 70.
(2)
In each case, as of or after the regular annual meeting of stockholders for the calendar year which includes the date of grant.

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Director Compensation Table

              The table below summarizes the compensation paid to non-employee directors for the year ended December 30, 2017.

OUR RELATIONSHIPS
Name Fees Earned or
Paid in Cash
 Stock
Awards(1)
 Option
Awards(2)
 Total
Compensation
 

Howard L. Lance(3)

 $250,009     $99,991     $—     $350,000     

Joseph S. Cantie

  100,009      99,991      —      200,000     

Ted A. Gardner

  100,009      99,991      —      200,000     

John R. Murphy

  115,009      99,991      —      215,000     

Neil P. Simpkins

  110,009      99,991      —      210,000     

Anne K. Wade

  100,009      99,991      —      200,000     

Steven H. Wunning

  100,009      99,991      —      200,000     

Julia C. Kahr(4)

  16,667      —      —      16,667     

(1)
The amounts reported in the Stock Awards column reflect the aggregate grant date fair value of RSUs granted in fiscal 2017, computed in accordance with ASC 718, utilizing the assumptions discussed in Note 13,Stock-Based Compensation, to our audited consolidated financial statements included in the 2017 Annual Report. As of December 30, 2017, the aggregate number of unvested RSUs held by our directors was as follows: Mr. Lance, 4,098 RSUs; Mr. Cantie, 4,098 RSUs; Mr. Gardner, 4,098 RSUs; Mr. Murphy, 4,098 RSUs; Mr. Simpkins, 4,098 RSUs; Ms. Wade, 4,098 RSUs; and Mr. Wunning, 4,098 RSUs. As of December 30, 2017, Mr. Lance held 44,296 unvested LP Units. Time-vesting LP Units held by our directors vest 20% on the first anniversary of the legacy Class D 1 interests' grant date and the remaining 80% vest monthly over the four years following the first anniversary.
(2)
We did not make any option awards to directors in fiscal 2017. As of December 30, 2017, Messrs. Lance and Murphy held 246,611 and 10,220 time-vesting Leverage Restoration Options, respectively. Time-vesting Leverage Restoration Options held by our directors have the same vesting terms as those held by our NEOs and described in "Narrative Disclosure to Summary Compensation Table and Grants of Plan-Based Awards Table—Pre-IPO Long-Term Incentive Awards." As of December 30, 2017, a limited liability company controlled by Mr. Gardner held 27,408 warrants, which became exercisable on March 17, 2016.
(3)
Since Mr. Lance is the chairperson of the Board, he does not receive additional fees for his service as chairperson of the Nominating and Corporate Governance Committee.
(4)
Ms. Kahr resigned from the Board effective February 28, 2017.

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CERTAIN RELATIONSHIPS AND RELATED PERSON TRANSACTIONS

Exchange Agreement

Exchange Agreement

In connection with the IPO, we entered into an Exchange Agreement with the holders of LP Units pursuant to which each holder of LP Units (and certain permitted transferees thereof) may, subject to the terms of the Exchange Agreement, exchange their LP Units for shares of Class A Common Stock on a one-for-one basis, subject to customary conversion rate adjustments for stock splits, stock dividends and reclassifications. The Exchange Agreement also provides that a holder of LP Units will not have the right to exchange LP Units if the Company determines that such exchange would be prohibited by law or regulation or would violate other agreements with the Company or its subsidiaries to which such holder may be subject. The Company may impose additional restrictions on exchange that it determines to be necessary or advisable so that Summit Holdings is not treated as a "publicly“publicly traded partnership"partnership” for U.S. federal income tax purposes. As a holder exchanges LP Units for shares of Class A Common Stock, the number of LP Units held by the Company is correspondingly increased as it acquires the exchanged LP Units. In accordance with the Exchange Agreement, any holder who surrenders all of its LP Units for exchange must concurrently surrender all shares of Class B Common Stock held by it (including fractions thereof) to the Company.

Tax Receivable Agreement

Registration Rights Agreement

              In connection with the IPO, we entered into a registration rights agreement with our pre-IPO owners and the former holders of Class B Units of Continental Cement Company, L.L.C. (the "Former CCC Minority Holders") pursuant to which we granted them, their affiliates and certain of their transferees the right, under certain circumstances and subject to certain restrictions, to require us to register under the Securities Act of 1933, as amended (the "Securities Act"), the offering of shares of Class A Common Stock delivered in exchange for LP Units. Under the registration rights agreement, we agreed to register the exchange of LP Units for shares of Class A Common Stock by our pre-IPO owners. In addition, Blackstone had the right to request an unlimited number of "demand" registrations and had customary "piggyback" registration rights. The Former CCC Minority Holders had the right to request one "demand" registration and had customary piggyback registration rights.

Tax Receivable Agreement

In connection with the IPO, we entered into a tax receivable agreement with the holders of LP Units that provides for the payment to exchanging holders of LP Units of 85% of the benefits, if any, that the Company is deemed to realize as a result of the increases in tax basis resulting from exchanges of LP Units and certain other tax benefits related to entering into the tax receivable agreement, including tax benefits attributable to payments under the tax receivable agreement. Certain current and former holders of LP Units, who include certain of our executive officers and directors, are expected to receive payments under the tax receivable agreement in the future. The increases in tax basis as a result of an exchange of LP Units for shares of Class A Common Stock, as well as the amount and timing of any payments


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under the tax receivable agreement, are difficult to accurately estimate as they will vary depending upon a number of factors, including:


the timing of exchangesexchanges—for instance, the increase in any tax deductions will vary depending on the fair market value, which may fluctuate over time, of the depreciable or amortizable assets of Summit Holdings at the time of each exchange;


the price of shares of our Class A Common Stock at the time of the exchangeexchange—the increase in any tax deductions, as well as the tax basis increase in other assets, of Summit Holdings, is directly proportional to the price of shares of our Class A Common Stock at the time of the exchange;


the extent to which such exchanges are taxabletaxable—if an exchange is not taxable for any reason, increased deductions will not be available;


the amount and timing of our income—the Company is required to pay 85% of the cash tax savings as and when realized, if any. If the Company does not have taxable income, the Company is not required (absent a change of control or circumstances requiring an early termination payment) to make payments under the tax receivable agreement for that taxable year because no cash tax savings will have been realized. However, any tax attributes that do not result in realized benefits in a given tax year will likely generate tax attributes that may be utilized to generate benefits in previous or future tax years. The utilization of such tax attributes will result in cash tax savings that will result in payments under the tax receivable agreement; and


the effective tax rate—the benefit that the Company realizes is dependent on the tax rate in effect at the time taxable income is generated. For example, at the end of 2017, the Tax Cuts and Jobs Act was enacted into law. Among other things, the federal corporate tax rate was reduced from 35% to 21%. As a result, the value of the additional benefits generated from the exchanges was reduced, and therefore, the tax receivable agreement liability recorded by the Company was also reduced.

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We anticipate funding payments under the tax receivable agreement from cash flows from operations, available cash and available borrowings under our senior secured revolving credit facilities. As of December 30, 2017,January 1, 2022, we had accrued $331.9$326.5 million as a tax receivable agreement liability. Other than $0.6 million which was paid in January 2018, theThe tax receivable agreement liability is a long termlong-term liability as no additional payments are expected in the next twelve months.

In addition, the tax receivable agreement provides that upon certain changes of control, the Company'sCompany’s (or its successor's)successor’s) obligations would be based on certain assumptions, including that the Company would have sufficient taxable income to fully utilize the deductions arising from the tax deductions, tax basis and other tax attributes subject to the tax receivable agreement. With respect to our obligations under the tax receivable agreement relating to previously exchanged or acquired LP Units and certain net operating losses, we would be required to make a payment equal to the present value (at a discount rate equal to one year LIBOR plus 100 basis points) of the anticipated future tax benefits determined using assumptions (ii) through (v) of the following paragraph.

Furthermore, the Company may elect to terminate the tax receivable agreement early by making an immediate payment equal to the present value of the anticipated future cash tax savings. In determining such anticipated future cash tax savings, the tax receivable agreement includes several assumptions,


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including that (i) any LP Units that have not been exchanged are deemed exchanged for the market value of the shares of Class A Common Stock at the time of termination, (ii) the Company will have sufficient taxable income in each future taxable year to fully realize all potential tax savings, (iii) the Company will have sufficient taxable income to fully utilize any remaining net operating losses subject to the tax receivable agreement on a straight line basis over the shorter of the statutory expiration period for such net operating losses or the five-year period after the early termination or change of control, (iv) the tax rates for future years will be those specified in the law as in effect at the time of termination and (v) certain non-amortizable assets are deemed disposed of within specified time periods. In addition, the present value of such anticipated future cash tax savings areis discounted at a rate equal to LIBOR plus 100 basis points.

Under the terms of the tax receivable agreement, the Company can terminate the tax receivable agreement at any time, which would trigger a cash payment to the pre-IPO owners. Based upon a $31.44$40.14 per share price of our Class A common stock, the closing price of our stock on December 30, 201731, 2021 (the last business day of our fiscal year) and a contractually defined discount rate of 3.11%1.58%, the Company estimates that if it were to exercise its right to terminate the tax receivable agreement, the aggregate amount required to settle the tax receivable agreement would be approximately $282$312 million.

Summit Materials Holdings L.P. Amended and Restated Limited Partnership Agreement

Summit Materials Holdings L.P. Amended and Restated Limited Partnership Agreement

The Company holds LP Units in Summit Holdings and is the sole general partner of Summit Holdings. Accordingly, the Company operates and controls all of the business and affairs of Summit Holdings and, through Summit Holdings and its operating entity subsidiaries, conducts our business.

Pursuant to the limited partnership agreement of Summit Holdings, the Company has the right to determine when distributions will be made to holders of LP Units and the amount of any such distributions. If a distribution is authorized, such distribution will be made to the holders of LP Units pro rata in accordance with the percentages of their respective limited partnership interests.

              No distributions will be made in respect of unvested LP Units and instead such amounts will be distributed to holders of vested LP Units pro rata in accordance with their vested interests. If, from time to time, an unvested LP Unit becomes vested, then, on the next distribution date, all amounts that would have been distributed pro rata in respect of that LP Unit if it had been vested on prior distribution dates will be required to be "caught up" in respect of that LP Unit before any distribution is made in respect of other vested LP Units.

The holders of LP Units, including the Company, incur U.S. federal, state and local income taxes on their share of any taxable income of Summit Holdings. The limited partnership agreement of Summit Holdings provides for tax distributions to the holders of the LP Units in an amount generally calculated to provide each holder of LP Units with sufficient cash to cover its tax liability in respect of the LP Units. These tax distributions are generally only paid to the extent that other distributions made by Summit Holdings were otherwise insufficient to cover the estimated tax liabilities of all holders of LP Units. In general, these tax distributions are computed based on our estimate of the net taxable income of Summit Holdings allocated to each holder of LP Unitsthe Company multiplied by an assumed tax rate equal to the highest effective marginal combined U.S. federal, state and local income tax rate applicable to an individual ora corporate resident in New York, New York (or a corporate resident in certain circumstances).York. In the year ended December 30, 2017,January 1, 2022, Summit LLC paiddid not make any distributions to Summit Holdings totaling $49.7 million, of which $1.8 million was distributed to Summit Holdings' partners, other than the Company, and of which $47.9 million was paid to the Company.

Holdings.

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The limited partnership agreement of Summit Holdings also provides that substantially all expenses incurred by or attributable to the Company, but excluding obligations incurred under the tax receivable agreement by the Company, income tax expenses of the Company and payments on indebtedness incurred by the Company, will be borne by Summit Holdings.

The Company as the general partner may (i) at any time, require all holders of LP Units, other than holders who are current employees or service providers, to exchange their units for shares of our common stock or (ii) with the consent of partners in Summit Holdings whose vested interests exceed 66 2/3% of the aggregate vested interests in Summit Holdings, require all holders of interests in Summit Holdings to transfer their interests, provided that the prior written consent of each holder that is an affiliate of Blackstone affected by any such proposed transfer will be required. These provisions are designed to ensure that the general partner can, in the context of a sale of the Company, sell Summit Holdings as a wholly-owned entity subject to the approval of the holders thereof, including specific approval by any Blackstone affiliates then holding such units. For so long as affiliates of Blackstone collectively owned at least 5% of the outstanding LP Units, the consent of each Blackstone holder was required to amend the limited partnership agreement.

thereof.

Indemnification Agreements

Indemnification Agreements

We have entered into indemnification agreements with our directors and executive officers. These agreements require us to indemnify these individuals to the fullest extent permitted by Delaware law against liabilities that may arise by reason of their service

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to us, and to advance expenses incurred as a result of any proceeding against them as to which they could be indemnified. Insofar as indemnification for liabilities arising under the Securities Act may be permitted to directors or executive officers, we have been informed that in the opinion of the SEC such indemnification is against public policy and is therefore unenforceable.

There is currently no pending material litigation or proceeding involving any of our directors, officers or employees for which indemnification is sought.

Warrant Issuances

              In connection with the modification of the capital structure of Summit Holdings at the time of our IPO, we issued warrants to purchase an aggregate of 160,333 shares of Class A Common Stock to limited partners of Summit Holdings who held Class C limited partnership interests of Summit Holdings. Holders of the Class C limited partnership interests include Thomas W. Hill, a limited liability company controlled by Ted A. Gardner, and Michael J. Brady, who received warrants to purchase 29,463, 27,408, and 6,852 shares of Class A Common Stock, respectively. The warrants were issued in substitution for part of the economic benefit of the Class C interests that was not reflected in the conversion of the Class C interests to LP Units. The exercise price of the warrants is equal to the IPO price of $18.00 per share. The warrants became exercisable from and after March 17, 2016 and will expire on March 11, 2025.

Other

              Thomas A. Beck, the President of our Cement Division, through the Thomas A. Beck Family, LLC (the "Beck LLC"), is a party to a Contribution and Purchase Agreement, dated December 18, 2014 that we entered into with the Former CCC Minority Holders (the "Contribution and


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Purchase Agreement"). In connection with the Contribution and Purchase Agreement, on March 17, 2015, Summit Holdings issued to the Former CCC Minority Holders $15.0 million in aggregate principal amount of non-interest bearing notes payable over six years. The pro rata share of the $15.0 million in notes that is due to the Beck LLC is $208,344, payable in six equal annual installments of $34,724 on each anniversary of March 17, 2015. During 2017, the second installment on the notes was paid to the Beck LLC. In addition, during 2017, tax distributions to the Beck LLC in connection with Mr. Beck's interest in the Contribution and Purchase Agreement totaled $12,160.

Statement of Policy Regarding Transactions with Related Persons

We have adopted a written statement of policy regarding transactions with related persons, which we refer to as our "related“related person policy." Our related person policy requires that a "related person" (as“related person” ​(as defined in paragraph (a) of Item 404 of Regulation S-K) must promptly disclose to our Chief Legal Officer any "related“related person transaction" (definedtransaction” ​(defined as any transaction that is anticipated would be reportable by us under Item 404(a) of Regulation S-K in which we were or are to be a participant and the amount involved exceeds $120,000 and in which any related person had or will have a direct or indirect material interest) and all material facts with respect thereto. The Chief Legal Officer will then promptly communicate that information to our Board. No related person transaction will be executed without the approval or ratification of an approving body that shall be composed solely of independent directors who are disinterested in the transaction. Currently, our Board or a duly authorized committeehas designated the members of our Board.the Audit Committee as the approving body. It is our policy that directors interested in a related person transaction will recuse themselves from any vote on a related person transaction in which they have an interest.

52 | SUMMIT MATERIALS2022 NOTICE OF ANNUAL MEETING AND PROXY STATEMENT


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OUR STOCKHOLDERS
HOLDINGS OF MAJOR STOCKHOLDERS

TableThe following table sets forth the beneficial ownership of Contents


SECTION 16(a) BENEFICIAL OWNERSHIP REPORTING COMPLIANCE

              Toshares of our knowledge, based solely on a reviewClass A Common Stock and LP Units by (1) each person known to us to beneficially own more than 5% of any class of the copiesoutstanding voting securities of such reports furnished to us and written representations that no other reports were required, we believe that during the fiscal year ended December 30, 2017,Company, (2) each of our officers, directors and greater-than-10% stockholders timely filedNEOs and (3) all reports requiredof our directors and executive officers as a group as of March 21, 2022.

Class A Common Stock(1)LP Units(1)Combined Voting Power(2)
Stockholder NameNumberPercentNumberPercentNumberPercent
The Vanguard Group, Inc.(3)11,145,5829.311,145,5829.2
BlackRock, Inc.(4)8,974,4337.58,974,4337.4
T. Rowe Price Associates, Inc. (5)8,886,9427.48,886,9427.4
FMR LLC(6)7,951,5386.77,951,5386.6
Capital International Investors(7)6,384,5895.36,384,5895.3
Anne P. Noonan (8)93,197*93,197*
Howard L. Lance(9)89,979*45,772*135,751*
Joseph S. Cantie(10)35,763*35,763*
Anne M. Cooney(11)22,996*22,926*
Susan A. Ellerbusch(12)22,996*22,996*
John R. Murphy(13)23,436*4,274*27,710*
Anne K. Wade(14)23,014*23,014*
Steven H. Wunning(15)30,640*30,640*
Tamala Oates-Forney(16)4,054*4,054*
Brian J. Harris(17)203,059*332,699*535,758*
Karli S. Anderson(18)10,033*10,033*
Christopher B. Gaskill(19)25,537*25,537*
Deon MacMillan(20)10,163*10,163*
All Directors and Executive Officers as a Group (13 persons)(21)594,867*382,745*977,612*
Anne P. Noonan
Brian J. Harris
Karli S. Anderson
Christopher B. Gaskill
Deon MacMillan
*
Less than 1%.
The percentage of beneficial ownership of (1) Class A Common Stock is based upon 119,548,709 shares issued and outstanding and (2) LP Units is based upon 120,862,715 LP Units outstanding (including 119,548,709 LP Units held by Section 16(a)the Company), in each case as of March 21, 2022. Percentage of combined voting power is based upon 120,862,715 votes represented by outstanding securities, consisting of (1) 119,548,709 shares of Class A Common Stock issued and outstanding and (2) 1,314,006 LP Units outstanding and eligible to vote, excluding LP Units held by the Company, in each case as of March 21, 2022. The Company is the general partner of Summit Holdings, which indirectly owns 100% of the limited liability interests of Summit Materials, LLC (“Summit LLC”). Except as otherwise noted, (i) the information is as of March 21, 2022, and (ii) the address of each beneficial owner is c/o Summit Materials, Inc., 1550 Wynkoop Street, 3rd floor, Denver, Colorado 80202. Beneficial ownership is determined in accordance with the rules and regulations of the SEC.
2022 NOTICE OF ANNUAL MEETING AND PROXY STATEMENTSUMMIT MATERIALS | 53


(1)
Subject to the terms of the Exchange Act,Agreement, LP Units are exchangeable for shares of our Class A Common Stock on a one-for-one basis. See “Certain Relationships and Related Person Transactions — Exchange Agreement.” Beneficial ownership of LP Units reflected in this table is not reflected as beneficial ownership of shares of our Class A Common Stock for which such units may be exchanged. See “Executive Compensation — Narrative Disclosure to Summary Compensation Table and Grants of Plan-Based Awards Table — Pre-IPO Long-Term Incentive Awards (Value From Modifications to Eliminate Misalignment Post-IPO)” for a description of the LP Units.
(2)
Represents percentage of voting power of the Class A Common Stock and Class B Common Stock of the Company voting together as a single class and gives effect to voting power of the Class B Common Stock, excluding options that are vested or will vest within 60 days as well as outstanding warrants. The Class B Common Stock provides holders who also hold LP Units with a number of votes that is equal to the aggregate number of LP Units held by such holders. As of March 21, 2022, holders of the LP Units held all of the issued shares of our Class B Common Stock that were outstanding and the total number of votes that were represented by the Class B Common Stock was 1,314,006.
(3)
The number of shares held was obtained from the holder’s Schedule 13G/A filing with the exceptionSEC on February 10, 2022, which reports ownership as of December 31, 2021. The Schedule 13G/A filing indicates that the holder, The Vanguard Group, Inc. (“Vanguard”) has shared power to vote or direct the vote of 96,388 shares of our Class A Common Stock, sole power to dispose or direct the disposition of 10,944,138 shares of our Class A Common Stock, and shared power to dispose or direct the disposition of 201,444 shares of our Class A Common Stock. The address of Vanguard is 100 Vanguard Blvd., Malvern, PA 19355.
(4)
The number of shares held was obtained from the holder’s Schedule 13G/A filing with the SEC on February 3, 2022, which reports ownership as of December 31, 2021. The Schedule 13G/A filing indicates that the holder, BlackRock, Inc. (“BlackRock”) had sole power to vote or direct the vote of 8,640,952 shares of our Class A Common Stock and sole power to dispose or to direct the disposition of 8,974,433 shares of our Class A Common Stock. The address of BlackRock is 55 East 52nd Street, New York, NY 10055.
(5)
The number of shares held was obtained from the Schedule 13G/A filing made by T. Rowe Price Associates, Inc. (“T. Rowe Price”) with the SEC on February 14, 2022, which reports ownership as of December 31, 2021. The Schedule 13G/A indicates that T. Rowe Price has sole power to vote or direct the vote of 3,381,175 shares of our Class A Common Stock and sole power to dispose or direct the disposition of 8,886,942 shares of our Class A Common Stock. The address of T. Rowe Price is 100 E. Pratt Street, Baltimore, Maryland 21202.
(6)
The number of shares held was obtained from the Schedule 13G/A filing made by FMR LLC (“FMR”) and Abigail P. Johnson with the SEC on February 9, 2022, which reports ownership as of December 31, 2021. The Schedule 13G/A indicates that FMR has sole power to vote or direct the vote of 2,776,161 shares of our Class A Common Stock and sole power to dispose or direct the disposition of 7,951,538 shares of our Class A Common Stock. The Schedule 13G/A indicates that Ms. Johnson has sole power to dispose or direct the disposition of 7,951,538 shares of our Class A Common Stock. Members of the Johnson family, including Ms. Johnson, are the predominant owners, directly or through trusts, of Series B voting common shares of FMR LLC, representing 49% of the voting power of FMR LLC. The Johnson family group and all other Series B shareholders have entered into a shareholders’ voting agreement under which all Series B voting common shares will be voted in accordance with the majority vote of Series B voting common shares. Accordingly, through their ownership of voting common shares and the execution of the shareholders’ voting agreement, members of the Johnson family may be deemed, under the Investment Company Act of 1940 (the “Investment Act”), to form a controlling group with respect to FMR LLC. Neither FMR LLC nor Abigail P. Johnson has the sole power to vote or direct the voting of the shares owned directly by the various investment companies registered under the Investment Company Act (“Fidelity Funds”) advised by Fidelity Management & Research Company (“FMR Co”), a wholly owned subsidiary of FMR LLC, which power resides with the Fidelity Funds’ Boards of Trustees. FMR Co carries out the voting of the shares under written guidelines established by the Fidelity Funds’ Boards of Trustees. The address of FMR is 245 Summer Street, Boston, Massachusetts 02210.
(7)
The number of shares held was obtained from the Schedule 13G filing made by Capital International Investors (“Capital”) with the SEC on February 11, 2022, which reports ownership as of December 31, 2021. The Schedule 13G indicates that Capital has sole power to vote or direct the vote of 6,384,589 shares of our Class A Common Stock and sole power to dispose or direct the disposition of 6,384,589 shares of our Class A Common Stock. The address of Capital is 333 South Hope Street, 55th Fl, Los Angeles, CA 90071.
(8)
Includes 93,197 shares of our Class A Common Stock owned by Ms. Noonan.
(9)
Includes (i) one Form 481,611 options issued to Mr. Lance that was inadvertently not filed to reportare vested or will vest within 60 days, (ii) 45,772 LP Units held by Mr. Lance, and (iii) 8,368 shares of our Class A Common Stock held by Mr. Lance.
(10)
Includes (i) 30,663 shares of our Class A Common Stock owned by Mr. Cantie directly and (ii) 5,100 shares of our Class A Common Stock held by a trust for the awardbenefit of Mr. Cantie, for which Mr. Cantie and his spouse serve as trustees.
(11)
Includes (i) 9,716 restricted stock units that are vested and the reporting person has elected to Joseph S. Cantie on February 28, 2017, which award was subsequently disclosed on a Form 5 filed on February 8, 2018,defer settlement and (ii) one Form 413,280 shares of our Class A Common Stock owned by Ms. Cooney.
(12)
Includes 22,996 shares of our Class A Common Stock owned by Ms. Ellerbusch.
(13)
Includes (i) 10,220 options issued to Mr. Murphy that was inadvertently not filed to report the awardare vested or will vest within 60 days, (ii) 4,274 LP Units held by Mr. Murphy and (iii) 13,216 shares of our Class A Common Stock owned by Mr. Murphy.
(14)
Includes (i) 4,374 restricted stock units that are vested and the reporting person has elected to Steven H. Wunning on February 28, 2017, which award was subsequently disclosed on a Form 5 filed on February 8, 2018,defer settlement and (ii) 18,640 shares of our Class A Common Stock owned by Ms. Wade.
(15)
Includes 30,640 shares of our Class A Common Stock owned by Mr. Wunning.
(16)
Includes 4,054 restricted stock units that will vest within 60 days owned by Ms. Oates-Forney.
(17)
Includes (i) 19,216 options issued to Mr. Harris that are vested or will vest within 60 days, (ii) 183,843 shares of our Class A Common Stock owned by Mr. Harris, and (iii) Form 4/As filed332,699 LP Units held by The Harris Family 2014 Trust fbo Michael J. Harris and The Harris Family 2014 Trust fbo Cameron I.J. Harris, trusts for which Mr. Harris’ spouse serves as trustee and as to which Mr. Harris could be deemed to have beneficial ownership.
(18)
Includes 10,033 shares of our Class A Common Stock owned by Ms. Anderson.
(19)
Includes (i) 1,536 options that are vested or will vest within 60 days and (ii) 24,001 shares of our Class A Common Stock owned by Mr. Gaskill.
(20)
Includes (i) 6,452 restricted stock units that will vest within 60 days and (ii) 3,711 shares of our Class A Common Stock owned by Ms. MacMillan.
(21)
Includes (i) 112,583 options that are vested or will vest within 60 days, (ii) 10,506 restricted stock units that will vest within 60 days, (iii) 382,745 LP Units, (iv) 14,090 restricted stock units that are vested and the reporting person has elected to defer settlement and (v) 457,688 shares of our Class A Common Stock.
54 | SUMMIT MATERIALS2022 NOTICE OF ANNUAL MEETING AND PROXY STATEMENT

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USERS’ GUIDE
Information Referenced in This Proxy Statement
The content of the websites referred to in this proxy statement are not deemed to be part of, and are not incorporated by reference into, this proxy statement.
Attending the Annual Meeting of Stockholders
WHO CAN ATTEND THE ANNUAL MEETING?
You are entitled to attend the Annual Meeting on Wednesday, May 18, 2022 only if you were a Summit Materials stockholder at the close of business on March 28, 201723, 2022, or you hold a valid proxy. No cameras, recording equipment, laptops, tablets, cellular telephones, smartphones, or other similar equipment, electronic devices, large bags, briefcases or packages will be permitted, and security measures will be in effect to provide for the safety of attendees.
HOW CAN I ATTEND THE ANNUAL MEETING?
To attend the Annual Meeting physically, you will need proof of ownership of Summit Materials stock to enter the meeting. If your shares are in the name of your broker or bank or you received your materials electronically, you will need to bring evidence of your stock ownership, such as your most recent brokerage statement and a “legal proxy” from the bank, brokerage firm or other nominee that correctedhold your shares, in order to enter the Form 4s timely filedmeeting. Everyone will be required to present a valid picture ID in order to enter the meeting.
To attend the Annual Meeting via the virtual web conference, please go to www.virtualshareholdermeeting.com/SUM2022 and enter the control number found on your proxy card, voting instruction form or notice you received.
As always, we encourage you to vote your shares prior to the Annual Meeting. We have designed our hybrid format to enhance stockholder access, participation and communication. During the live Q&A session of the Annual Meeting, we may answer questions as they come in, to the extent relevant to the business of the Annual Meeting, as time permits. If you encounter any difficulties accessing the virtual web conference of the Annual Meeting, please call the numbers listed on the login page. Technical support will be available beginning 15 minutes before the start of the meeting and through the conclusion of the Annual Meeting.
HOW CAN I ACCESS THE ANNUAL MEETING VOTING WEBSITE?
All stockholders can visit the Annual Meeting voting website at www.proxyvote.com. On our Annual Meeting voting website, you can vote your proxy, access copies of our Proxy Statement and Annual Report and other information about Summit Materials, and elect to view future proxy statements and annual reports online instead of receiving paper copies in the mail.
IMPORTANT NOTICE REGARDING THE AVAILABILITY OF PROXY MATERIALS FOR THE SUMMIT MATERIALS, INC.
ANNUAL MEETING OF STOCKHOLDERS TO BE HELD ON WEDNESDAY, MAY 18, 2022
THIS NOTICE, OUR PROXY STATEMENT, AND OUR COMBINED ANNUAL REPORT AND ANNUAL REPORT ON
FORM 10-K FOR THE YEAR ENDED JANUARY 1, 2022 ARE AVAILABLE AT WWW.PROXYVOTE.COM.
2022 NOTICE OF ANNUAL MEETING AND PROXY STATEMENTSUMMIT MATERIALS | 55


Who Can Vote and How
WHO IS ENTITLED TO VOTE?
You are entitled to vote at the Annual Meeting on Wednesday, May 18, 2022 only if you were a Summit Materials stockholder of record of our Class A Common Stock and Class B Common Stock (each such designation having par value $0.01 per share) at the close of business on March 2, 201723, 2022.
On March 23, 2022, we had 119,548,726 shares of Class A Common Stock outstanding and entitled to vote and 99 shares of Class B Common Stock outstanding and entitled to vote. Holders of shares of our Class A Common Stock and Class B Common Stock vote together as a single class on all matters on which stockholders are entitled to vote generally (except as may be required by law).
Each share of Class A Common Stock is entitled to one vote for each director nominee and one vote for each other item to be voted on at the Annual Meeting. All of the shares of our outstanding Class B Common Stock are currently held by our pre-IPO investors, including certain members of management or their family trusts that inadvertently misstateddirectly hold LP Units. A holder of Class B Common Stock is entitled, without regard to the number of stock options grantedshares of Class B Common Stock held by such holder, to Thomas W. Hill, Thomas A. Beck, Anne Lee Benedict, Michael J. Brady, M. Shane Evans, Brian J. Harris, Damian J. Murphy, and Douglas C. Rauh.


EXPENSES OF SOLICITATION

              The accompanying proxya number of votes that is solicitedequal to the aggregate number of LP Units held by and on behalfsuch holder. As of the Board,record date, the total number of LP Units to which the voting power of the Class B Common Stock relates was 1,314,006.

A majority of the voting power of Class A Common Stock and Class B Common Stock entitled to vote, present in person or represented by proxy, constitutes a quorum for the transaction of business at the Annual Meeting. Abstentions and broker non-votes will be included in determining the presence of a quorum at the Annual Meeting.
HOW DO I VOTE?
We encourage you to vote your shares in advance of the Annual Meeting, even if you plan on attending the Annual Meeting. If you have already voted prior to the Annual Meeting, you may nevertheless change or revoke your vote at the Annual Meeting.
Vote your shares as follows. In all cases, have your Notice of Internet Availability of Proxy Materials, proxy card or voting instruction form in hand and follow the instructions.

Vote by Internet. Visit www.proxyvote.com 24/7 to vote by internet using your computer.

Vote by Telephone. Stockholders of record can call toll-free 800-690-6903 24/7 to vote. For beneficial stockholders, please see the voting instruction form 24/7 to vote.

Vote by Mail. If you elected to receive a hard copy of your proxy materials, fill out the enclosed proxy card, date and sign it, and return it in the enclosed postage paid envelope.

Vote During the Annual Meeting via the Internet. You may attend the Annual Meeting via the Internet and vote during the meeting. Go to www.virtualshareholdermeeting.com/SUM2022, enter the control number found on your proxy card, voting instruction form or notice you received, and follow the instructions available on the meeting website during the meeting.
We encourage you to register to receive all future stockholder communications electronically, instead of in print. This means that, after you register, access to the annual report, proxy statement, and other correspondence will be delivered to you via e-mail.
CAN I CHANGE MY VOTE?
If you own common stock of record, you may change your vote at any time before the polls close at the Annual Meeting. You can do this by:

Voting again by Internet or telephone prior to 11:59 p.m. Eastern Time on May 17, 2022;

Signing another proxy card with a later date and returning it prior to the Annual Meeting; or

Voting again during the Annual Meeting.
A stockholder owning common stock in street name may revoke or change voting instructions by contacting the bank, brokerage firm or other nominee holding the shares or by obtaining a legal proxy from such institution and voting in person at the Annual Meeting.
WHO COUNTS THE VOTES?
We have hired Broadridge Financial Solutions, Inc. to count the votes represented by proxies and cast by ballot, and Broadridge Financial Solutions, Inc. has been appointed to act as Inspector of Election.
56 | SUMMIT MATERIALS2022 NOTICE OF ANNUAL MEETING AND PROXY STATEMENT


WHEN WILL THE VOTING RESULTS BE ANNOUNCED?
We will announce the preliminary voting results during the Annual Meeting. We will report the final results on our website and in a Current Report on Form 8-K filed with the SEC within four days following the meeting.
WILL MY VOTE BE CONFIDENTIAL?
All stockholder proxies, ballots and tabulations that identify stockholders will be maintained in confidence. No such document will be available for examination, and the costidentity and vote of such solicitationany stockholder will not be disclosed, except as necessary to meet legal requirements and to allow the inspectors of election to certify the results of the vote.
Business Taking Place at the Annual Meeting
WHICH PROPOSALS ARE BEING VOTED ON AT THE ANNUAL MEETING?

The election of each of the three nominees to the Board named herein;

The approval, on a nonbinding advisory basis, of the compensation of our NEOs, as disclosed herein; and

The approval, on a nonbinding advisory basis, as to whether the nonbinding advisory vote on the approval of the compensation of our NEOs should be held every year, every two years, or every three years; and

The ratification of the appointment of KPMG as our independent registered public accounting firm.
WHICH PROPOSALS ARE “ROUTINE” AND WHICH ARE “NON-ROUTINE”?
The ratification of KPMG LLP as our independent registered public accounting firm for our fiscal year ending December 31, 2022 is the only routine matter to be presented at the Annual Meeting. The other two matters are non-routine and brokers will not be allowed to vote on these proposals without specific voting instructions from beneficial owners. We do not expect any additional matters will be bornebrought before the Annual Meeting. However, if other matters are properly presented, the persons named as proxies in the proxy card or their substitutes will vote in their discretion.
HOW MANY VOTES ARE NEEDED TO APPROVE EACH PROPOSAL?
With respect to the election of directors, a nominee for director shall be elected to the Board by a plurality of the Company. Solicitationsvotes cast in respect of the shares of common stock present in person or represented by proxy at the Annual Meeting and entitled to vote on the election of directors. A plurality vote requirement means that the director nominees with the greatest number of votes cast “FOR”, even if it is less than a majority, will be elected. You may vote “FOR” or “WITHHOLD” with respect to each nominee. A withhold vote in the election of directors will have the same effect as an abstention. Neither a withhold vote nor a broker non-vote will affect the outcome of the election of directors.
The affirmative vote of a majority of the voting power of common stock present in person or represented by proxy and entitled to vote on the matter is required to (i) ratify the appointment of KPMG as our independent registered public accounting firm and (ii) approve, on a nonbinding advisory basis, the compensation of our NEOs, as disclosed in this Proxy Statement. You may vote “FOR,” “AGAINST,” or “ABSTAIN” with respect to these matters. For these matters, abstentions are not counted as affirmative votes but are counted as present at the Annual Meeting and entitled to vote and will have the effect of a vote “against” the matter. Broker non-votes, if any, will have no effect on the outcome of these matters. With respect to the frequency of a nonbinding advisory stockholder vote on the compensation of our NEOs (Item 4), you may vote “ONE YEAR”, “TWO YEARS”, “THREE YEARS”, or “ABSTAIN”. Abstentions and broker non-votes, if any, will have no effect on the outcome of this matter.
Proxies
WHO IS SOLICITING MY PROXY?
The Board of Summit Materials is soliciting your proxy to vote at the 2022 Annual Meeting of Stockholders.
HOW CAN I REVOKE MY PROXY?
You can revoke your proxy by sending written notice of revocation to our Chief Legal Officer & Secretary at Summit Materials, Inc., 1550 Wynkoop Street, 3rd Floor, Denver, Colorado 80202, by May 17, 2022.
WHAT IS THE COST OF THIS PROXY SOLICITATION?
The Company will pay the costs of preparing, printing, assembling, and mailing the proxy materials used in the solicitation of proxies. Solicitation may be made by mail, personal interview, telephone, and electronic communications byour directors, officers, and other Company employees withoutby mail, email, telephone, or in person. Those individuals
2022 NOTICE OF ANNUAL MEETING AND PROXY STATEMENTSUMMIT MATERIALS | 57


will receive no additional compensation.compensation for solicitation activities. We have hired Okapi Partners LLCInnisfree M&A Incorporated to assist in the solicitation of proxies, who will receive a fee of $15,000,$20,000, plus reasonable out-of-pocketout of pocket costs and expenses, for its services. Broadridge will distribute proxy materials to banks, brokers, and other nominees for forwarding to beneficial owners and will request brokerage houses and other custodians, nominees, and fiduciaries to forward soliciting material to the beneficial owners of the common stock held on the record date by such persons. We will reimburse brokerage houses and other custodians, nominees and fiduciaries for their expenses in forwarding solicitation materials.


OTHER MATTERS

              As of the date of thisGetting Our Proxy Statement there are no other matters that we intend to present, or have reason to believe others will present, at theand Annual Meeting. If, however, other matters properly come before the Annual Meeting,Report

HOW CAN I ACCESS PROXY MATERIALS ONLINE?
This Proxy Statement, the accompanying proxy authorizes the persons named as proxies or their substitutes to vote on such matters as they determine appropriate.


PROPOSALS OF STOCKHOLDERS

              Proposals of stockholders to be considered for inclusion in the proxy statementcard, and proxy card for the 2019 Annual Meeting pursuant to Rule 14a-8 under the Exchange Act must be submitted in writing to the Chief Legal Officer & Secretary of Summit Materials, Inc., at Summit Materials, Inc., 1550 Wynkoop Street, 3rd Floor, Denver, Colorado 80202, and must be received no later than November 30, 2018. The submission of a stockholder proposal does not guarantee that it will be included in our proxy statement.

              In addition, our Bylaws include advance notice provisions that require stockholders wishing to bring nominations for directors or other business before an annual meeting to provide proper notice in accordance with the terms of the advance notice provisions. The Bylaws' advance notice provisions do not apply if the stockholder only seeks to include such matters in the proxy statement pursuant to Rule 14a-8.

              The Bylaws' advance notice provisions require that, among other things, stockholders give timely written notice to the Secretary of the Company regarding such nominations or other business and provide


Table of Contents

the information and satisfy the other requirements set forth in the Bylaws. To be timely, a stockholder who intends to present nominations or a proposal at the 2019 Annual Meeting of Stockholders other than pursuant to Rule 14a-8 must provide the information set forth in the Bylaws to the Secretary of the Company no earlier than January 17, 2019 and no later than February 16, 2019. However, if we hold the 2019 Annual Meeting of Stockholders more than 30 days before, or more than 70 days after, the anniversary of the 2018 Annual Meeting date, then the information must be received no earlier than the 120th day prior to the 2019 Annual Meeting date, and not later than the close of business on the later of (i) the 90th day prior to the 2019 Annual Meeting date or (ii) the tenth day after public announcement of the 2019 Annual Meeting date. If a stockholder fails to meet these deadlines and fails to satisfy the requirements of Rule 14a-4 under the Exchange Act, we may exercise discretionary voting authority under proxies we solicit to vote on any such proposal as we determine appropriate.

              We reserve the right to reject, rule out of order, or take other appropriate action with respect to any nomination or proposal that does not comply with these and other applicable requirements.


HOUSEHOLDING: AVAILABILITY OF ANNUAL REPORT ON FORM 10-K
AND PROXY STATEMENT

              A copy of the 20172021 Annual Report accompanies this Proxy Statement. If you and others who share yourare being made available to stockholders online at www.proxyvote.com.

Instead of mailing address own common stock in street name, meaning throughprinted copies of these materials, we will send some of our stockholders a bank, brokerage firm, or other nominee, you may have received a notice that your household will receive only one Annual Report and Proxy Statement, or Notice of Internet Availability of Proxy Materials as applicable, from the Company. This practice, known as "householding," is designed(“Notice”). If you received a Notice and would prefer to reduce the volume of duplicate information and reduce printing and postage costs. Unless you responded that you did not want to participate in householding, you were deemed to have consented to it, andreceive a singlepaper copy of this Proxy Statementour proxy materials, follow the instructions included in the Notice to update your preferences. If you elect to receive our future proxy materials electronically, you will receive access to those materials via e-mail unless and the 2017 Annual Report (and/oruntil you elect otherwise.
WHY DID MY HOUSEHOLD RECEIVE A SINGLE SET OF PROXY MATERIALS?
SEC rules permit us to deliver a single copy of our Notice of Internet Availability of Proxy Materials) has been sent to your address. Each street name stockholder receiving this2021 Annual Report and Proxy Statement by mailto any household at which two or more stockholders reside if we believe the stockholders are members of the same family. This practice benefits both you and Summit Materials, as it eliminates duplicate mailings and reduces our printing and mailing costs. Each stockholder will continue to receive a separate voting instruction form.

              If you would like to revoke your consent to householding and in the future receive your own set of proxy materials (or your own Notice of Internet Availability of Proxy Materials, as applicable), or if your household is currently receiving multiple copies of the same items and you would like in the future to receive only a single copy at your address, please contact Householding Department by mail at 51 Mercedes Way, Edgewood, New York 11717, or by calling 1-866-540-7095, and indicate your name, the name of each of your brokerage firms or banks where your shares are held, and your account numbers. The revocation of a consent to householding will be effective 30 days following its receipt. You will also have an opportunity to opt in or opt out of householding by contacting your bank or broker.

If you would like an additional copy of the 2017 Annual Report, this Proxy Statement, or the Notice of Internet Availability of Proxy Materials, these documents are available in digital form for download or review by visiting "Annual Reports and Proxies" atwww.proxyvote.com. Alternatively, we will promptly send a copy of these documents to you without charge upon request by mail to 51 Mercedes Way, Edgewood, New York 11717, or by calling 1-800-690-6903. Please note, however, that if you did not receive a printed copy of our proxy materials and you wish to receive a paper proxy card or voting instruction form or othercard.

Your household may have received a single set of proxy materials for the purposes of the Annual Meeting, you should follow the instructions included in your Notice of Internet Availability of Proxy Materials.

this year. If you prefer to receive your own sharescopy now or in future years, please request a duplicate set by phone at 1-866-540-7095, online at www.proxyvote.com, or by writing to Summit Materials, c/o Broadridge, 51 Mercedes Way, Edgewood, NY 11717.

If you hold your stock in street name, you may receive some duplicate mailings. Certain brokers will eliminate duplicate account mailings on request. You may need to contact your broker directly if you want to discontinue duplicate mailings to your household. You can also register to receive all future stockholder communications electronically, instead of in print. This means that links to the annual report, proxy statement, and other correspondence will be delivered to you via e-mail. Holders in street name can register for electronic delivery directly with their bank, brokerage firm, or other nominee. Electronic delivery of stockholder communications helps save the Company money by reducing printing and postage costs.

Future Shareholder Proposals and Nominations
RULE 14A-8 SHAREHOLDER PROPOSAL
Under SEC rules, if you want us to include a proposal in our proxy statement for the 2022 Annual Meeting of Stockholders, you must submit it in writing to our Chief Legal Officer & Secretary at Summit Materials, Inc., 1550 Wynkoop Street, 3rd Floor, Denver, Colorado 80202, by December 2, 2022. Any such proposal should comply with the requirements of Rule 14a-8 promulgated under the Securities Exchange Act. The submission of a shareholder proposal does not guarantee that it will be included in our proxy statement.
PROXY ACCESS NOMINATIONS AND OTHER PROPOSALS/NOMINATIONS
Under our Bylaws, a stockholder wishing to bring director nominations or other business before an annual meeting is required to provide advance written notice to the Chief Legal Officer & Secretary of Summit Materials regarding such nominations or other business and provide the information and satisfy the other requirements set forth in the Bylaws. To be timely, a stockholder who intends to present nominations or a proposal at the 2022 Annual Meeting other than pursuant to Rule 14a-8 must provide the information set forth in the Bylaws no earlier than January 18, 2023 and no later than February 17, 2023. However, if we hold the 2022 Annual Meeting more than 30 days before, or more than 70 days after, the anniversary of the 2022 Annual Meeting date, then the information must be received no earlier than the 120th day prior to the 2023 Annual Meeting date, and not later than the close of business on the later of the 90th day prior to the 2023 Annual Meeting date or the tenth day after public announcement of the 2023 Annual Meeting date. These advance notice provisions do not apply if the stockholder only seeks to include such matters in the proxy statement pursuant to Rule 14a-8.
If a stockholder fails to meet these deadlines and fails to satisfy the requirements of Rule 14a-4 under the Securities Exchange Act, we may exercise discretionary voting authority under proxies we solicit to vote on any such proposal as we determine appropriate. We also reserve the right to reject, rule out of order, or take other appropriate action with respect to any nomination or proposal that does not comply with these and other applicable requirements.
58 | SUMMIT MATERIALS2022 NOTICE OF ANNUAL MEETING AND PROXY STATEMENT



ANNEX A

RECONCILIATION OF
NON-GAAP MEASUREMEASURES TO GAAP

The following table below reconciles our net income to Adjusted EBITDA for the year ended December 30, 2017January 1, 2022.
Year ended
January 1, 2022
Reconciliation of Net Income (Loss) to Adjusted EBITDA
($ in thousands)
Net income (loss)$154,281
Interest (income) expense92,240
Income tax expense��44,356
Depreciation, depletion and amortization226,442
EBITDA$517,319
Accretion2,924
Loss on debt financings6,016
Tax receivable agreement benefit(6,779)
Gain on sale of businesses(20,011)
Non-cash compensation19,705
Other908
Adjusted EBITDA$520,082
The following table reconciles net cash provided by operating activities to free cash flow for year ended January 1, 2022.
Year ended
January 1, 2022
($ in thousands)
Net income$154,281
Non-cash items253,976
Net income adjusted for non-cash items408,257
Change in working capital accounts(46,328)
Net cash provided by operating activities361,929
Capital expenditures, net of asset sales(200,308)
Free cash flow$161,621
2022 NOTICE OF ANNUAL MEETING AND PROXY STATEMENTSUMMIT MATERIALS | 59


The table below reconciles our Adjusted EBITDA to Further Adjusted EBITDA and December 31, 2016.

our calculation of Net Debt to arrive at our Net Leverage Ratio for the year ended January 1, 2022.
Year ended
January 1, 2022
($ in thousands)
Adjusted EBITDA$520
EBITDA for certain acquisitions / divestitures(1)(3)
Transaction costs3
Further Adjusted EBITDA(2)$520
Long-term debt, including current portion$1,610
Acquisition related liabilities46.5
Finance leases and other32.6
Less: Cash and cash equivalents381
Net Debt$1,308.1
Net Leverage Ratio(3)2.5x
(1)
Under the terms of our credit facilities, we include EBITDA from our acquisitions, net of dispositions, in each fiscal year for periods prior to acquisition.
(2)
Further Adjusted EBITDA is defined as Adjusted EBITDA plus the EBITDA contribution for certain recent acquisitions.
(3)
Net Leverage Ratio is defined as Net Debt divided by Further Adjusted EBITDA.
60 | SUMMIT MATERIALS2022 NOTICE OF ANNUAL MEETING AND PROXY STATEMENT
 
 Year ended 
 
 December 30,
2017
 December 31,
2016
 

Reconciliation of Net Income to Adjusted EBITDA

       

Net income

 $125,777 $46,126 

Interest expense

  108,549  97,536 

Income tax benefit

  (283,977) (5,299)

Depreciation, depletion and amortization

  177,643  147,736 

EBITDA

 $127,992 $286,099 

Accretion

  1,875  1,564 

IPO/ Legacy equity modification costs

    37,257 

Loss on debt financings

  4,815   

Tax receivable agreement expense

  271,016  14,938 

Transaction costs

  7,733  6,797 

Management fees and expenses

    (1,379)

Non-cash compensation

  21,140  12,683 

Loss (gain) on disposal and impairment of assets

    3,805 

Other

  1,206  9,583 

Adjusted EBITDA

 $435,777 $371,347 


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BROADRIDGE CORPORATE ISSUER SOLUTIONSC/O SUMMIT MATERIALS, INC.P.O. BOX 1342BRENTWOOD, NY 11717 VOTE BY INTERNETINTERNETBefore The Meeting - Go to www.proxyvote.com Useor scan the QR Barcode aboveUse the Internet to transmit your voting instructions and for electronic delivery of information upinformationup until 11:59 p.m. Eastern Time the day before the cut-off date or meeting date. Have your proxyyourproxy card in hand when you access the web site and follow the instructions to obtain your recordsyourrecords and to create an electronic voting instruction form. BROADRIDGE CORPORATE ISSUER SOLUTIONS C/O SUMMIT MATERIALS, INC. P.O. BOX 1342 BRENTWOOD, NY 11717 ELECTRONIC DELIVERY OF FUTURE PROXY MATERIALS If you would likeform.During The Meeting - Go to reducewww.virtualshareholdermeeting.com/SUM2022You may attend the costs incurred by our company in mailing proxy materials, you can consent to receiving all future proxy statements, proxy cards and annual reports electronicallymeeting via e-mail or the Internet. To sign up for electronic delivery, please follow the instructions above to vote using the Internet and when prompted, indicate that you agree to receive or access proxy materials electronicallyvote during the meeting. Have the informationthat is printed in future years. VOTEthe box marked by the arrow available and follow the instructions.VOTE BY PHONE - 1-800-690-6903 Use1-800-690-6903Use any touch-tone telephone to transmit your voting instructions up until 11:59 p.m. Eastern TimeEasternTime the day before the cut-off date or meeting date. Have your proxy card in hand when youwhenyou call and then follow the instructions. VOTE BY MAIL Mark, sign and date your proxy card and return it in the postage-paid envelope we have provided or return it to Vote Processing, c/o Broadridge, 51 Mercedes Way, Edgewood, NY 11717. TOinstructions.Signature [PLEASE SIGN WITHIN BOX] Date Signature (Joint Owners) DateTO VOTE, MARK BLOCKS BELOW IN BLUE OR BLACK INK AS FOLLOWS: E40478-P05782 KEEP THIS PORTION FOR YOUR RECORDS DETACH AND RETURN THIS PORTION ONLY THISRECORDSTHIS PROXY CARD IS VALID ONLY WHEN SIGNED AND DATED. SUMMIT MATERIALS, INC. The Board of Directors recommends you vote "FOR" the following: For Withhold For All AllAllExcept To withhold authority to vote for any individual nominee, mark "For All Except" and write the number of the nominee on the line below. ! ! ! 1.DETACH AND RETURN THIS PORTION ONLYD74451-P67253Nominees:01) Joseph S. Cantie02) Anne M. Cooney03) Anne P. Noonan04) Tamla Oates-Forney1. Election of Directors Nominees: 01) Howard L. Lance 02) Anne K. Wade The Board of Directors recommends you vote "FOR" proposals 2 and 3. For Against Abstain ! ! !ForAllWithholdAllFor AllExcept! ! !! ! ! ! 2. Ratification of the appointment of KPMG LLP!Please sign exactly as our independent auditors for 2018. 3. Nonbinding advisory vote on the compensation of our named executive officers for 2017. NOTE:your name(s) appear(s) hereon. When signing as attorney, executor,administrator, or other fiduciary, please give full title as such. Joint owners should each signpersonally. All holders must sign. If a corporation or partnership, please sign in full corporateor partnership name by authorized officer.NOTE: Such other business as may properly come before the meeting or any adjournment or postponement thereof. Please sign exactly as your name(s) appear(s) hereon. When signing as attorney, executor, administrator, or other fiduciary, please give full title as such. Joint owners should each sign personally. All holders must sign. If a corporation or partnership, please sign in full corporate or partnership name by authorized officer. Signature [PLEASE SIGN WITHIN BOX] Date Signature (Joint Owners) Date



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Important Notice Regarding the Availability of Proxy Materials for the Annual Meeting:The Notice and Proxy Statement and Annual Report are available at www.proxyvote.com. E40479-P05782 SUMMITwww.proxyvote.com.D74452-P67253SUMMIT MATERIALS, INC. AnnualINC.Annual Meeting of Stockholders May 17, 201818, 2022, 8:00 A.M. Eastern Time This, Central TimeThis proxy is solicited by the Board of Directors TheDirectorsThe undersigned hereby appoint(s) Thomas W. Hill, Anne Lee Benedict,P. Noonan, Christopher B. Gaskill, and Brian J. Harris, and each of them, each with full power of substitution, as proxies, and hereby authorize(s) them to represent and to vote, as designated on the reverse side of this ballot, all of the shares of Class A Common Stock and/or Class B Common Stock of Summit Materials, Inc. (the "Company") that the undersigned is/are entitled to vote at the Annual Meeting of Stockholders to be held at 8:00 A.M. Eastern, Central Time, at The Post Oak Hotel at Uptown Houston, 1600 West Loop South, Houston, TX 77027 and on May 17, 2018,the Internet through a virtual web conference at the offices of the Company’s subsidiary, Hinkle Contracting Company, LLC, located at 101 Helm St., Suite 110, Lexington, Kentucky 40505,www.virtualshareholdermeeting.com/SUM2022, and at any adjournment or postponement thereof. Thisthereof.This proxy, when properly executed, will be voted in the manner directed herein. If no such direction is given, this proxy will be voted "FOR" all portions of items (1), (2), and (4) and for "1 Year" for item (3); and in the proxies' discretion on any other matters coming before the meeting or any adjournment or postponement thereof. Continuedthereof.Continued and to be signed on reverse side