UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

SCHEDULE 14A

Proxy Statement Pursuant to Section 14(a) of

the Securities Exchange Act of 1934 (Amendment No.  )

Check the appropriate box:

Beacon Roofing Supply, Inc.BEACON ROOFING SUPPLY, 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):

Beacon Roofing Supply, Inc.

505 Huntmar Park Drive, Suite 300
Herndon, Virginia 20170

NOTICE OF ANNUAL MEETING OF SHAREHOLDERS
TO BE HELD ON FEBRUARY 13, 201812, 2019

To the shareholders of Beacon Roofing Supply, Inc.:

The 20182019 Annual Meeting of Shareholders of Beacon Roofing Supply, Inc. (the “Company”) will be held at the Ritz-CarltonThe Post Oak Hotel 280 Vanderbilt Beach Road, Naples, FL, 34108at Uptown Houston, 1600 West Loop South, Houston, TX 77027 on Tuesday, February 13, 2018,12, 2019, at 8:00 a.m. local time, for the purpose of considering and voting on the following matters:

Although our Board of Directors intends to carefully consider the shareholder votesvote resulting from Proposal No. 3, thosethat final votesvote will not be binding on us and areis advisory in nature. All holders of record of shares of Beacon Roofing Supply, Inc. stock (Nasdaq:BECN) at the close of business on December 18, 20172018 are entitled to receive notice of the meeting and to vote at the meeting. Your attention is directed to the accompanying proxy statement for further information with respect to the matters to be acted upon at the meeting.

Whether or not you expect to be present, please vote by proxy over the Internet, by telephone, or by signing, dating, and returning the enclosed proxy card in the enclosed pre-addressed envelope as promptly as possible. No postage is required if mailed in the United States.

This is an important meeting and all shareholders are invited to attend the meeting in person. Those shareholders who are unable to attend are respectfully urged to vote by proxy over the Internet, by telephone, or by signing, dating, and returning the enclosed proxy card as promptly as possible in the enclosed return envelope. No postage is required if mailed in the United States. Shareholders who execute a proxy card may nevertheless attend the meeting, revoke their proxy and vote their shares in person.

Important Notice Regarding the Availability of Proxy Materials for the Annual Meeting of Shareholders to be Held on February 13, 2018:12, 2019: This proxy statement and the fiscal year 20172018 Annual Report are also available at www.proxydocs.com/BECN.

Beacon Roofing Supply, Inc.

505 Huntmar Park Drive, Suite 300

Herndon, Virginia 20170

PROXY STATEMENT

DATE, TIME AND PLACE OF ANNUAL MEETING

This proxy statement is furnished in connection with the solicitation by the Board of Directors of Beacon Roofing Supply, Inc. of proxies from the holders of our common stock, par value $.01 per share, for use at our 20182019 Annual Meeting of Shareholders to be held at the Ritz-CarltonThe Post Oak Hotel 280 Vanderbilt Beach Road, Naples, FL, 34108at Uptown Houston, 1600 West Loop South, Houston, TX 77027 on Tuesday, February 13, 2018,12, 2019, at 8:00 a.m. local time or at any adjournment(s) or postponement(s) of the annual meeting.

This proxy statement and the enclosed form of proxy are being mailed on or about January 10, 20182019 to shareholders of record as of December 18, 2017.2018. Shareholders should review the information provided in this proxy statement in conjunction with our 20172018 Annual Report that accompanies this proxy statement. In this proxy statement, we refer to Beacon Roofing Supply, Inc. as “we,” “our” and the “Company.” This proxy statement and the 20172018 Annual Report are also available to be viewed and downloaded at www.proxydocs.com/BECN.

Our principal executive offices are located at 505 Huntmar Park Drive, Suite 300, Herndon, Virginia 20170.

TABLE OF CONTENTS

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ABOUT THE MEETING

What is the date, time and place of the annual meeting?

The Beacon Roofing Supply, Inc. 20182019 Annual Meeting of Shareholders will be held on Tuesday, February 13, 2018,12, 2019, beginning at 8:00 a.m., local time, at the Ritz-CarltonThe Post Oak Hotel 280 Vanderbilt Beach Road, Naples, FL 34108.at Uptown Houston, 1600 West Loop South, Houston, TX 77027.

What is the purpose of the annual meeting?

At the annual meeting, shareholders will act upon the matters outlined in the notice of meeting on the cover page of this proxy statement, consisting of 1) election of directors; 2) ratification of the selection of Ernst & Young LLP as the Company’s independent registered public accounting firm for the fiscal year ending September 30, 2018;2019; 3) approval of the compensation of our named executive officers on a non-binding, advisory basis; and 4) any other matters that properly come before the meeting.

Who is entitled to vote at the meeting?

OnlyShareholders of record of our shareholders of recordcommon stock and our Series A Cumulative Participating Preferred Stock (the “Preferred Stock”) at the close of business on December 18, 2017,2018, the record date for the meeting, are entitled to receive notice of and to participate in the annual meeting. If you were a shareholder of record on that date, you will be entitled to vote all of the shares you held on that date at the meeting, or any postponement(s) or adjournment(s) of the meeting. As of the record date, there were 67,968,82268,356,181 shares of common stock outstanding, all of which are entitled to be voted at the annual meeting. In addition, as of the record date, there were 400,000 shares of Preferred Stock outstanding, all of which are entitled to be voted at the annual meeting. The Preferred Stock is entitled to vote together with the common stock as a single class on each matter to come before the annual meeting, with a number of votes based on the number of shares of common stock into which the Preferred Stock is convertible as of the record date. Accordingly, the 400,000 shares of preferred stock are entitled to a total of 9,694,619 votes. As a result, a total of 78,050,800 votes are eligible to be cast at the annual meeting based on the number of outstanding shares of common stock and Preferred Stock as of the record date.

A list of our shareholders will be available at our headquarters at 505 Huntmar Park Drive, Suite 300, Herndon, Virginia 20170 for a period of ten days prior to the annual meeting and at the annual meeting itself for examination by any shareholder.

What are the voting rights of the holders of our common stock?stock and Preferred Stock?

Holders of common stock are entitled to one vote per share on each matter that is submitted to shareholders for approval. The holder of the Preferred Stock is entitled to an aggregate of 9,694,619 votes on each matter submitted to the shareholders for approval, based on the aggregate number of shares of common stock into which the Preferred Stock is convertible as of the record date.

Are there any requirements on how the holder of Preferred Stock must vote?

Pursuant to the terms of the investment agreement described under “Certain Relationships and Related Transactions”, the holder of the Preferred Stock has agreed to vote in favor of each director nominated and recommended by the board for election at the annual meeting. The holder is entitled to vote in its discretion on the other proposals described in this proxy statement.

Who can attend the meeting?

All of our shareholders as of the record date, or their duly appointed proxies, may attend the meeting, and each may be accompanied by one guest. Please also note that if you hold your shares in “street name” (that is, through a broker or other nominee), you will need to bring a copy of a brokerage statement reflecting your stock ownership as of the record date.

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What constitutes a quorum?

The presence at the meeting, in person or by proxy, of the holders of common stock and Preferred Stock representing a majority of the combined voting power of the outstanding shares of stock on the record date will constitute a quorum, permitting the meeting to conduct its business. As of the record date, there were 67,968,822 shares of common stock outstanding, all of which are entitled to be voted at the annual meeting.

What vote is required to approve each item?

For purposesThe election of electing directors at the annual meeting,twelve director nominees named in this proxy statement requires the nominees receiving the support of our shareholders representing the greatest numbersaffirmative vote of shares of common stock presentand Preferred Stock, voting together as a single class, representing a plurality of the votes cast for such election at the meeting, in person or by proxy and entitled to vote, shallannual meeting. This means that the twelve nominees will be elected as directors. The affirmative vote of a majorityif they receive more “for” votes than any other person. “Withhold” votes and broker non-votes are not considered votes cast for the foregoing purpose, and will have no effect on the election of the shares of common stock present at the meeting in person or by proxy and entitled to vote is required for the: ratificationnominees.

Ratification of the selection of Ernst & Young LLP;LLP and approval of the compensation of our named executive officers; and approval of any other matter that may be submitted to aofficers requires the affirmative vote of our shareholders.shares of common stock and Preferred Stock, voting together as a single class, representing a majority of votes cast on such proposal at the annual meeting (meaning that that number of shares voted “for” such proposal exceeds the number of shares voted “against” such proposal.) Abstentions and broker non-votes are not considered votes cast for the foregoing purpose, and will have no effect on the vote for these proposals.

Although our Board of Directors intends to carefully consider the shareholder vote on the compensation of our named executive officers, that vote will not be binding on us and is advisory in nature.

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The inspector of election for the annual meeting shall determine the number of shares of common stock and Preferred Stock represented at the meeting, the existence of a quorum and the validity and effect of proxies, and shall count and tabulate ballots and votes and determine the results thereof. Proxies received but marked as abstentions and broker non-votes will be included in the calculation of the number of shares considered to be present at the meeting for purposes of determining a quorum. A “broker non-vote” will occur when a nominee holding shares for a beneficial owner does not vote on a particular proposal because the nominee does not have discretionary power with respect to that proposal and has not received instructions from the beneficial owner. Broker non-votes will not be counted as votes cast “for” or votes “withheld” for the election of directors. On other matters submitted for a vote, broker non-votes will not be considered in tallying votes cast, and abstentions will be treated as a vote “against.” If less than a majority of the combined voting power of the outstanding shares of common stock and Preferred Stock is represented at the annual meeting, the holders of shares representing a majority of the sharesvoting power so represented may adjourn the annual meeting from time to time without further notice.

What are the Board’s recommendations?

As more fully discussed under Summary of Business Matters to be Voted On, our Board of Directors recommends a vote FOR the election of the respective nominees for director named in this proxy statement; FOR the ratification of the selection of Ernst & Young LLP; and FOR approval of the executive compensation.

Unless contrary instructions are indicated on the enclosed proxy, all shares represented by valid proxies received pursuant to this solicitation (and which have not been revoked in accordance with the procedures set forth below) will be voted (1) FOR the election of the respective nominees for director named in this proxy statement; (2) FOR the ratification of the selection of Ernst & Young LLP; (3) FOR the approval of the compensation of our named executive officers; and (4) in accordance with the recommendation of our Board of Directors, FOR or AGAINST all other matters as may properly come before the annual meeting. In the event a shareholder specifies a different choice by means of the enclosed proxy, such shares will be voted in accordance with the specification made.

How do I vote?

If you are a holder of record (that is, if your shares are registered in your own name with our transfer agent), you may vote by proxy over the Internet, by telephone, or by signing, dating, and returning the enclosed proxy card. Voting instructions for each method are provided on the proxy card contained in the proxy materials.

If you are a participant in the Beacon stock fund under the Beacon 401(k) Profit Sharing Plan or a Beacon employee holding shares on the Solium Shareworks platform, you may furnish voting instructions over the Internet,

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by telephone, or by signing, dating and returning the enclosed proxy card. Voting instructions for each method are provided on the proxy card contained in the proxy materials.

If you are a street name holder (that is, if you hold your shares through a bank, broker or other holder of record), you must vote in accordance with the voting instruction form provided by your bank, broker or other holder of record. The availability of telephone or internet voting will depend upon your bank’s, broker’s, or other holder of record’s voting process.

If you come to the meeting, you can vote in person. If you are a street name holder and wish to vote at the meeting, you must first obtain a proxy from your bank, broker or other holder of record authorizing you to vote.

Can I change my vote after I return my proxy card?

Yes. The giving of a proxy does not eliminate the right to vote in person should any shareholder giving the proxy so desire. Shareholders have an unconditional right to revoke their proxy at any time prior to the exercise of that proxy, by voting in person at the annual meeting, by filing a written revocation with our Secretary at our headquarters or by submitting a later dated proxy by telephone, over the Internet, or by mail.

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Who pays for costs relating to the proxy materials and Annual Meeting of Shareholders?annual meeting?

The costs of preparing, assembling and mailing this proxy statement, the Notice of Annual Meeting of Shareholders and the enclosed Annual Report and proxy card, along with the cost of posting the proxy materials on a website, are to be borne by us. In addition to the use of mail, our directors, officers and employees may solicit proxies personally and by telephone, e-mail, facsimile and other electronic means. They will receive no compensation in addition to their regular salaries. We may request banks, brokers and other custodians, nominees and fiduciaries to forward copies of the proxy material to their principals and to request authority for the execution of proxies. We may reimburse these persons for their expenses in so doing.

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STOCK OWNERSHIP

Who are the largest owners of our common stock? How many shares of common stock do our directors and executive officers own?

The following table shows information regarding the beneficial ownership of our common stock and our Preferred Stock for the following:

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As disclosed in the CD&R Schedule 13D, on November 20, 2018, CD&R Stockholder and Credit Suisse Capital LLC (“CS”), entered into an arrangement pursuant to which CD&R Stockholder has agreed to purchase shares of common stock from CS from time to time. The aggregate number of such shares will be an amount that, when taken together with the total number of shares beneficially owned by CD&R Stockholder, including shares of common stock issuable upon conversion of the Preferred Stock held by CD&R Stockholder (collectively, “CD&R Shares”), will not cause the total number of CD&R Shares to exceed 29.99% of the sum of the total number of outstanding shares of common stock and the number of shares of common stock issuable upon conversion of such Preferred Stock.  As disclosed in the CD&R Schedule 13D, CS will have exclusive beneficial ownership and control over any such shares held by CS or its affiliates as hedge positions with respect to the arrangement until such shares are delivered to CD&R Stockholder.  

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(19)  Consists of 9,455

Section 16(a) Beneficial Ownership Reporting Compliance

Section 16(a) of the Securities Exchange Act of 1934 requires our officers, directors and persons who own more than ten percent of a registered class of our equity securities to file reports of ownership and changes in ownership on Forms 3, 4 and 5, as applicable, with the Securities and Exchange Commission (“SEC”). Officers, directors and shareholders owning more than ten percent of our common stock are required by the SEC regulations to furnish us with copies of all Forms 3, 4 and 5 they file.

Based solely on our review of the copies of these forms received or representations from certain reporting persons that no forms were required to be filed, we believe that all of our officers, directors, and greater than ten percent beneficial owners complied with all filing requirements applicable to them with respect to transactions during the fiscal year ended September 30, 2017.2018, except that CD&R Boulder Holdings, L.P. filed its Form 3 late.

Equity Compensation Plan Information⁽¹⁾⁽²⁾

The following table provides information as of September 30, 2018 with respect to each equity plan or arrangement pursuant to which warrants or options to purchase our common shares have been granted.

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SUMMARY OF BUSINESS MATTERS TO BE VOTED ON

Proposal 1.

ELECTION OF DIRECTORS

Our Amended and Restated Certificate of Incorporation and Bylaws provide that our Board of Directors shall consist of not less than three members to serve one-year terms of office. The authorized number of directors for this election is set at eleventwelve members. Upon election at the annual meeting, our directors will serve terms expiring at the 20192020 Annual Meeting of Shareholders or until their successors have been duly elected and qualified. The following individuals are our nominees:

Robert R. Buck

Paul M. Isabella

Carl T. Berquist

Barbara G. Fast

Richard W. Frost

Alan Gershenhorn

Philip W. Knisely

Robert M. McLaughlin

Neil S. Novich

Stuart A. Randle

Nathan K. Sleeper

Douglas L. Young

Each nominee has consented to serve as a director; however, in the event that a nominee for a directorship is unable to accept election or if any other unforeseen contingencies should arise, it is intended that proxies will be voted for the remaining nominees, if any, and for such other person as may be designated by the Board of Directors, unless it is directed by a proxy to do otherwise.

Our Company has grown rapidly through internalorganic growth and acquisitions to become the largest publicly traded distributor of residential and non-residential roofing materials and complementary building products in the United States and Canada, operating branches in all 50 U.S. states and in six Canadian provinces. Accordingly, our nominees have experience in a variety of areas important to our Company, such as managing and overseeing the management of large public and private companies, corporate governance and executive compensation, strategic planning, mergers and acquisitions, financing growing businesses, international operations, cybersecurity, information technology and marketing, and experience in our industry. Our Nominating and Corporate Governance Committee and Board believe that these nominees provide us with the range and depth of experience and capabilities needed to effectively oversee the management of our Company. In addition, we believe our directors complement each other well and together comprise a cohesive unit in terms of Board process and collaboration.

Information about Our Nominees

The following information sets forth, as of December 18, 2017,2018, certain information about our nominees (age is in parentheses after each name). Unless otherwise indicated, each person has been engaged in the principal occupation shown for the past five years. There are no family relationships between any of our directors or executive officers. The Board has determined that each of the following directors is independent under Nasdaq listing standards: Carl T. Berquist, Barbara G. Fast, Richard W. Frost, Alan Gershenhorn, Robert M. McLaughlin, Neil S. Novich, Stuart A. Randle, and Douglas L. Young. Independent members of our Board shall meet in executive session at least two times a year.

Robert R. Buck (70)(71) — Chairman. Mr. Buck joined us as President and Chief Executive Officer and a director in October 2003 and was appointed as Chairman of the Board in March 2007. Prior to joining us, he served as President — Uniform Rental Division of Cintas Corporation from 1997 to 2003. From 1991 through 1997, he served as Senior Vice President — Midwest Region of Cintas. From 1982 through 1991, he served as Senior Vice President — Finance and Chief Financial Officer of Cintas. Mr. Buck presently serves on the Boardsboards of Multi-Color

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Corporation and Quanex Building Products Corporation, both publicly-traded companies, and Elkay Manufacturing.Manufacturing, a privately held company. Mr. Buck has a bachelor’s degree from the University of Cincinnati.

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Mr. Buck has overseen the growth of the CompanyBeacon from a private company with 65 branches and approximately $600 million in annual sales to a public company with 383549 branches as of September 30, 20172018 and $4.4$6.42 billion in sales in fiscal year 2017.2018. His continued leadership as Chairman of the Board will beis a major advantage to the Company and the Board as we continue to grow and make plannedadditional strategic acquisitions.

Paul M. Isabella (62)(63) — President and Chief Executive Officer. Mr. Isabella joined us in November 2007 as President and Chief Operating Officer and was promoted to Chief Executive Officer in January 2011. Mr. Isabella also became a director in February 2011. Prior to joining us, he served as Executive Vice President of Cooper Industries from 2005 to 2007 and Senior Vice President of Stanley Works from 1999 to 2005. He began his career with General Electric Company in 1977 and worked in various GE businesses for 22 years. Mr. Isabella has a B.S. degree from State University of New York at Cortland.

Mr. Isabella has led the CompanyBeacon to record sales in in each of the last three fiscal years, led the successful integration of multiple acquisitions, and has formed an effective organizational structure to facilitate future growth. We believe it is important that the CEO be an integral part of our Board’s decision-makingdecision making process.

Carl T. Berquist (66)(67) — Mr. Berquist has served as a director since June 2016. He is the former Executive Vice President and Chief Financial Officer of Marriott International, Inc., a leading global lodging company, having served in that position from 2009 until his retirement in 2015. Mr. Berquist joined Marriott in 2002 after a 28-year career with Arthur Andersen LLP, where he held numerous leadership positions including managing partner of the worldwide real-estate and hospitality practice. Mr. Berquist previously served for ten years on the Board of Hertz Global Holdings. He is a member of the Board of Advisors of Eberle Communications, a private direct mail company. He is a graduate of the Penn State University, where he is a member of the Board of Advisors of both the Business School and the School of Hospitality Management.

Mr. Berquist’sBerquist has extensive experience in executive finance roles with Marriott and public accounting will be verythat are helpful to the Board and management as the Company continueswe continue to implement operational efficiencies and its acquisitionexecute our growth strategy.

Major General (Ret.) Barbara G. Fast (65) — Major General Fast has served as a director since October 2018. She currently serves as the Chairperson of the Board of publicly-traded American Public Education, Inc., a for-profit education company. She also serves as the chairperson of APEI’s compensation committee and is a member of APEI’s nominating and corporate governance committee. She also serves as the chairperson of the board of Hondros College of Nursing. In addition, Major General Fast serves on the Strategic Advisory Group for the Sierra Nevada Corporation, a privately held aerospace engineering firm. She served as Senior Vice President, Strategic Engagements for CGI Federal, an IT and consulting services firm, from June 2014 to September 2016. Prior to that, she also served as Senior Vice President, Army Defense and Intelligence Programs and Vice President of Operations and Intelligence for CGI Federal. She also previously served as the Vice President, Cyber and Information Solutions for The Boeing Company, a leading manufacturer of commercial jetliners and defense, space, and security systems. Major General Fast retired from the U.S. Army in 2008 after over 32 years of service during which she held a variety of key command and staff positions. Major General Fast holds a Bachelor of Science in Education (German and Spanish) from the University of Missouri, a Master of Science in Business Administration from Boston University, and an Honorary Doctorate of Laws from Central Missouri State University. She is also a graduate of the Army War College.

Major General Fast’s unique cybersecurity expertise, deep public company executive and corporate governance experience, and tremendous leadership skills developed over her long and distinguished military and private sector careers are valuable assets as we move forward with our growth initiatives, particularly our leading e-commerce platform.

Richard W. Frost (66)(67) — Mr. Frost has served as a director since July 2012. He retired as Chief Executive Officer and a director of Louisiana-Pacific Corporation, a manufacturer of building materials, in May 2012, having served in those capacities since December 2004. Mr. Frost previously served as that company’s Executive Vice President, Commodity Products, Procurement and Engineering from March 2003 to November 2004; Executive

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Vice President, OSB, Procurement and Engineering from May 2002 to February 2003; and Vice President, Timberlands and Procurement from 1996 to April 2002. Mr. Frost currently serves on the Board of privately held Westervelt, Inc. and previously served on the Board of Tractor Supply Company, the largest operator of retail farm and ranch stores in the United States with over 1,200 stores in 45 states. Mr. Frost holds dual bachelor’s degrees from Louisiana State University and an M.B.A., Finance from Northwestern State University of Louisiana.

Mr. Frost’sFrost has both executive and director experience, including deep operational experience in the building products industry and success inwith growth situations and withthrough acquisitions, will be verywhich is helpful to the Board and management as the Company lookswe look to expand itsour available products and pursue aggressive acquisition growth.additional growth opportunities.

Alan Gershenhorn (59)(60) — Mr. Gershenhorn has served as a director since May 2015. He currently servesserved as Executive Vice President and Chief Commercial Officer of United Parcel Service, Inc., the world’s largest package delivery company.company through June 2018. At UPS, Mr. Gershenhorn directsdirected strategy, mergers and acquisitions, marketing, sales, product and solution development, customer experience management,public affairs, communications, and key growth strategies across UPS. Since 2007, Mr. Gershenhorn has beenthe organization. He served for over a decade as a member of the UPS Management Committee, which directs the global strategy and the day-to-day operations of UPS globally. He joinedglobally, and led numerous transformational programs during his 39 year tenure. Mr. Gershenhorn previously served in several significant UPS leadership positions in 1979the United States, Europe, and has held other various USCanada, including Chief Sales and international positions of increasing responsibility in operations, engineering, freight forwarding, logistics, customs brokerage, marketing, strategy,Marketing Officer, Senior Vice President and retail operations includingPresident UPS International, President UPS Supply Chain Solutions Global Transportation and Shared Services; President Supply Chain Solutions Europe, Asia, Middle East and Africa; and President UPS Canada. Mr. Gershenhorn currently serves on the boards of Transportation Insight and Worldwide Express, both privately-held enterprise logistics companies, and also operates in an advisory capacity to 8VC, a venture capital firm, and with some of their portfolio companies including Trackonomy Systems (where he serves as an advisory President). He holds a degree in finance from the University of Houston.

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Mr. Gershenhorn’sGershenhorn has extensive operational and functional experience, particularly in supply chain, logistics, e-commerce, strategy and marketing, and strategy, will bewhich is extremely valuable for the Company’sour planned growth and development of new and more efficient ways to serve itsour customers.

Philip W. Knisely (63)(64) — Mr. Knisely has served as a director since October 2015. He has been an operating advisor to Clayton, Dubilier & Rice, LLC (“CD&R”), a private equity firm, since 2011. He is currently Chairman of Atkore International, a leading designer, manufacturer and distributor of electrical and metal products, and former Chairman of RSG. Mr. Knisely spent a decade as Executive Vice President and Corporate Officer of Danaher Corporation, where he was responsible for businesses totaling more than $4 billion in sales. Prior to Danaher, Mr. Knisely co-founded Colfax Corporation, a designer, manufacturer, and distributer of fluid handling products, servingwhere he served as President and Chief Executive Officer. Previously, Mr. Knisely was President and Chief Executive Officer of AMF Industries, a privately held diversified manufacturer, and spent ten years at Emerson Electric. He serveshas previously served on the board of trustees of the Darden School Foundation at the University of Virginia, where he received his M.B.A. Mr. Knisely was also a GM Fellowship Scholar at General Motors Institute, where he earned a B.S. in industrial engineering.

Mr. Knisely’s tenure as Chairman of RSG givesgave him in-depth knowledge of the building products industry. Mr. Knisely has extensive experience in business strategy, operations and growth through acquisitions, which will be helpful to the Board and management as the Company lookswe look to expand itsour available products and pursue acquisition growth. Commencing January 2, 2018,additional growth opportunities. Mr. Knisley was designatedKnisely is a director nominee designated by CD&R pursuant to the terms of the investment agreement described under “Certain Relationships and Related Transactions – Investment Agreement and Preferred Stock Terms.Transactions.”

Robert M. McLaughlin (60)(61) — Mr. McLaughlin has served as a director since June 2016. He is the former Senior Vice President and Chief Financial Officer of Airgas, Inc., the nation’s leading single-source supplier of gases, welding and safety products. Mr. McLaughlin served in that position from 2006 until his retirement in 2016, after serving as Airgas’s Vice President and Controller since joining Airgas in 2001. Previously, he was Vice President-Finance for Asbury Automotive Group, a multi-billion dollar automotive retailer, after serving as Vice President of Finance and in other financial management roles with Unisource Worldwide, Inc., a multi-billion dollar international paper and industrial supply distribution company. Prior to Unisource, he had a thirteen year career with Ernst & Young. Mr. McLaughlin serves on the Board of Directorsboard of publicly-traded Axalta Coating Systems Ltd., a global leader in the development, manufacture and sale of liquid and powder coatings. He also serves on Axalta’s audit and

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compensation committees. Mr. McLaughlin earned his bachelor’s degree in accounting from the University of Dayton.

Mr. McLaughlin’s deep experience as a senior executive in financial management for multi-billion dollar distribution firms will be helpful to the Board and managementprovide value as the Company pursues itswe pursue additional growth goals and acquisition strategy.opportunities.

Neil S. Novich (63)(64) — Mr. Novich has served as a director since July 2012. He is the former Chairman, President and Chief Executive Officer of Ryerson Inc., a global metals distributor and fabricator. He joined Ryerson in 1994 as Chief Operating Officer, was named President and CEO in 1995, and was additionally appointed Chairman in 1999. He remained Chairman and CEO until 2007, when the company was sold. Prior to his time at Ryerson, he spent 13 years with Bain & Company, an international management consulting firm, where he was a partner. Mr. Novich serves on the boards of Hillenbrand, Inc., Analog Devices, Inc., and W.W. Grainger, Inc. Mr. Novich has a bachelor’s degree in physics from Harvard University and master’s degrees in both nuclear engineering and management from the Massachusetts Institute of Technology.

Mr. Novich understands the critical success factors for executive management of a public corporation. He has excellent financial knowledge and extensive board and managerial experience, including many years as a chairman.

Stuart A. Randle (58)(59) — Mr. Randle has served as a director since February 2006. Mr. Randle presently servesrecently retired from his role as the CEO of Ivenix, a privately held medical technology company. He also is a director of Teleflex Inc.,Incorporated, where he is a member of its Governance Committee,nominating & governance committee and compensation committee, and is also the Lead Independent Director of Flex Pharma, Inc., a publicly traded biotechnology company Flex Pharma, Inc.company. From 2004 –to 2014, Mr. Randle served as President, CEO and director of GI Dynamics, a healthcare company. Previously, Mr. Randle was an Entrepreneur-in-Residence for Advanced Technology Ventures, a healthcare and IT venture capital firm. From 1998 to 2001, he was President, CEO and a director of Act

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Medical, Inc. Mr. Randle holds a BS in mechanical engineering from Cornell University and an MBA from the Kellogg Graduate School of Management, Northwestern University.

Mr. Randle’s executive and director experience, including success in growth situations and with acquisitions, is a valuable asset for the Board and management as the Company moves forward with its planned continued growth.we continue to execute our growth strategy.

Nathan K. Sleeper (44)(45) — Mr. Sleeper has served as a director since January 2, 2018. He previously served as a director from October 2015 until May 2016. Mr. Sleeper is a partner of CD&R. He leads CD&R’s investment activity in the industrial sector and severs on its Investment and Management Committees. Mr. Sleeper is currently a director of Atkore International Group,Brand Industrial Holdings, Inc., Brand EnergyCore & Infrastructure, Inc., CHC Group Ltd., Hussmann International, Inc.,Main LP, NCI Building Systems, Inc., PowerTeam Services Holdco, LLC, CD&R Hydra Holdings, Inc. (parent entity of SunSource Holdings, Inc.), and Wilsonart International Holdings, LLC. He previously served on the boards of Atkore International Group, Inc., CHC Group, Ltd., Culligan International Company, HD Supply Holdings, Inc., Hertz Global Holdings, Inc., Hussmann Parent, Inc., Ply Gem Industries, Inc., and US Food,Foods, Inc. Prior to joining CD&R in 2000, Mr. Sleeper worked for Goldman Sachs & Co, and Tiger Management. Mr. Sleeper holds a bachelor’s degree from WilliamWilliams College and an M.B.A from Harvard Business School.

Mr. Sleeper’s broad experience in the financial and investment communities brings to our Board important insights into business strategy.strategy to our Board. Mr. Sleeper is a director nominee designated by CD&R pursuant to the terms of the investment agreement described under “Certain Relationships and Related Transactions – Investment Agreement and Preferred Stock Terms.Transactions.”

Douglas L. Young (55)(56) — Mr. Young became a director in October 2014. Mr. Young is Executive Vice President of Lennox International Inc., a global leader in the climate control industry. Mr. Young joined Lennox in 1999 and since 2006 has served as the President and Chief Operating Officer of Lennox’s Residential Heating and Cooling Segment. Mr. Young had previously served as Vice President & General Manager of North American Residential Products since 2003 and as Vice President & General Manager of Lennox North American Residential Sales, Marketing, & Distribution from 1999 – 2003. Prior to his career with Lennox, Mr. Young was employed in the Appliances division of GE, where he held various management positions before serving as General Manager of Marketing for GE Appliance division’s retail group from 1997 – 1999 and as General Manager of Strategic

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Initiatives in 1999. He holds a BSBA from Creighton University and an MS in Management from Purdue University.

Mr. Young’s executive experience is a valuable resource to the Board on issues involving sales, marketing, finance, product development, distribution and compensation.

The Board of Directors recommends that you vote FOR the election of the nominees.

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Proposal 2.

RATIFICATION OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

The Audit Committee appointed Ernst & Young LLP as the Company’s independent registered public accounting firm for the fiscal year ending September 30, 20182019 (“fiscal 2018”2019”).

The Board and the Audit Committee consider Ernst & Young LLP well qualified to serve as the Company’s independent registered public accounting firm and recommend ratification of such selection by the shareholders.

Although action by shareholders for this matter is not required, the Board and the Audit Committee believe that it is appropriate to seek shareholder ratification of the selection in order to provide our shareholders with a means of communicating their level of satisfaction with the performance of the independent registered public accounting firm and its level of independence from management. If the proposal is not approved and the selection of Ernst & Young LLP is not ratified by our shareholders, the Audit Committee will take this into consideration and will reconsider the appointment.

The Board of Directors recommends that you vote FOR the ratification of the retention of Ernst & Young LLP as our independent registered public accounting firm for our 20182019 fiscal year.

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PrProposaloposal 3.

ADVISORY VOTE ON EXECUTIVE COMPENSATION

The Company is presenting the following proposal, which gives you, as a shareholder, an advisory vote on the compensation of our named executive officers by voting for or against the following resolution:

“RESOLVED, that the shareholders approve the compensation of the Company’s named executive officers, as disclosed in the Compensation Discussion and Analysis, the compensation tables, and the related disclosure contained in the accompanying proxy statement.”

This resolution is required pursuant to Section 14A of the Securities Exchange Act. Although our Board of Directors intends to carefully consider the shareholder vote resulting from the proposal, the final vote will not be binding on us and is advisory in nature. The current frequency of the advisory vote on executive compensation is annually. The next vote on executive compensation is expected to occur at our 20192020 Annual Meeting of Shareholders.

Our Company has grown rapidly through internal growth and acquisitions to become the largest publicly traded distributor of residential and non-residential roofing materials and complementary building products in the United States and Canada, operating branches in all 50 U.S. states and in six Canadian provinces. We believe our past accomplishments, including consistent profitability and growth, support the effectiveness of our executive pay program, which is intended to attract, motivate and retain experienced and skilled executives. We also believe the program provides the named executive officers listed in our summary compensation table with compensation that is competitive within our industry, internally equitable and commensurate with their talents and responsibilities. The primary objective of the program is to closely align total executive direct compensation with the attainment of our annual and long-term performance goals. The compensation of our executive officers consists of base salary, cash bonuses,incentives, long-term incentive compensation in the form of Company stock options and stock awards, and certain perquisites such as an auto allowance, fuel reimbursement, and, fuel reimbursement.on occasion, housing and other allowances for relocated executives. Cash bonusesincentives are linked to quantitative and qualitative performance objectives. Most of the target cash bonusesincentives for which our executives are eligible are linked directly to Company quantitative performance in accordance with the terms of the cash incentive program.

The Board of Directors recommends that you vote FOR the approval of the compensation of our named executive officers.

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BOARD OF DIRECTORS’ MEETINGS,

COMMITTEES OF THE BOARD AND RELATED MATTERS

How often did the Board meet during fiscal year 2017?2018?

During fiscal year 2017,2018, our Board of Directors held eightseven meetings. No incumbent director attended fewer than 75 percent of the aggregate of (i) the number of meetings of the Board of Directors held during the period he or she served on the Board and (ii) the number of meetings of committees of the Board of Directors held during the period he or she served on these committees. All of our Board members attended the 20172018 Annual Meeting of Shareholders in person.Shareholders. It is our policy for all directors to attend the Annual Meeting of Shareholders.

What is the Board’s leadership structure?

Robert Buck serves as the Chairman of the Board and remains a member of executive management. Furthermore, our current CEO, Paul Isabella, was elected to the Board in February 2011. The Board believes that this leadership model is appropriate for the following reasons:

Because our Chairman of the Board is not considered an independent director, our Board has elected a Lead Independent Director. Stuart Randle currently serves as the Board’s Lead Independent Director, and the responsibilities of this position include the following:

Our business and affairs are managed under the direction of our Board, which is the Company’s ultimate decision-making body, except with respect to those matters reserved to our shareholders. Our Board’s key mission is to maximize long-term shareholder value. Our Board establishes our overall corporate policies, selects and evaluates our executive management team (which is charged with the conduct of our business), and acts as an advisor and counselor to executive management. Our Board also oversees our business strategy and planning, as well as the performance of management in executing its business strategy and assessing and managing risks.

What is the Board’s role in risk oversight?

The Board takes an active role in monitoring and assessing the Company’s risks, which include risks associated with operations, credit, financing, cybersecurity, and capital investments. Management is responsible for the Company’s day-to-day risk management activities and our Board’s role is to engage in informed risk oversight. Our Board members also complete the Company’s risk assessment survey. Management, through its internal audit function, compiles an annual ranking of risks to which the Company could be subjected. Our Director of Internal Audit reviews the results of this risk assessment with the Audit Committee. Any significant risks are then reviewed by the Board and assigned for oversight. In fulfilling this oversight role, our Board focuses on understanding the nature of our enterprise risks, including our operations and strategic direction, as well as the adequacy of our risk

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management process and overall risk management system. There are a number of ways our Board performs this function, including the following:

The Compensation Committee also has oversight responsibility for risks and exposures related to employee compensation programs and management succession planning, and assesses whether the organization’s compensation practices encourage risk taking that would have a material adverse effect on the Company. The committee periodically reviews the structure and elements of our compensation programs and its policies and practices that manage or mitigate such risk, including the balance of short-term and long-term incentives, use of multiple performance measures, and a multi-year vesting schedule for long-term incentives. Based on these reviews, the committee believes our compensation programs do not encourage excessive risk taking.

Are Board members subject to a retirement age?

No person shall be nominated by the Board to serve as a director after he or she has passed his or her 72nd birthday, unless the Nominating and Governance Committee has voted, on an annual basis, to waive the mandatory retirement age for such director.

Do Board members receive orientation training and continuing development education?

All new directors are required to participate in an orientation program, which includes the introduction of the new directors to the Company’s principal officers and presentations by senior management to familiarize new directors with the Company’s strategic plans and business units. The Board has adopted a Director Education Program and will conduct at least one continuing professional development program for all Board members each year. In addition, continuing professional development opportunities for all other directors will be conducted through the Company’s regular Board meetings and Board meeting materials; periodic Board or Board committee presentations by the Company’s officers concerning the Company’s strategies, business plans, management structure and significant financial, accounting and risk management issues; Board or Board committee presentations by outside parties; and other professional development opportunities, if appropriate and relevant to the duties of a director of the Company, including presentations and educational programs offered by various outside organizations, with appropriate expenses paid by the Company.

What committees has the Board established?

The Board of Directors has established three committees: (1) the Audit Committee, (2) the Compensation Committee and (3) the Nominating and Corporate Governance Committee.

Audit Committee

The Audit Committee held eightseven meetings in fiscal year 2017.2018. The Audit Committee assists the Board in monitoring:

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As a key part of its responsibilities above, the Audit Committee selects the independent registered public accounting firm, approves the scope of the annual audit activities of the independent registered public accounting firm, approves the audit fee payable to the independent registered public accounting firm and reviews audit results with the independent registered public accounting firm. The Audit Committee currently is composed of Carl Berquist, Robert McLaughlin and Douglas Young, each of whom meets the independence criteria prescribed by applicable law and the rules of the SEC for Audit Committee membership and is independent under Nasdaq listing standards. The Board has also determined that Mr. Berquist isand Mr. McLaughlin are an “audit committee financial expert”experts” as such term is defined in Regulation S-K promulgated by the SEC. Each of Messrs. Berquist, McLaughlin and Young meet Nasdaq’s financial knowledge requirements. Mr. Berquist currently serves as the Chairman of the Audit Committee. Ernst & Young LLP currently serves as our independent registered public accounting firm.

The Audit Committee operates under a formal charter that governs its duties and conduct. The Audit Committee charter complies with applicable Nasdaq and SEC rules and regulations. A copy of the charter is available on our web site at www.becn.com. In addition, the charter is available in print to any shareholder who requests it in writing to our Chief Financial Officer at Beacon Roofing Supply, Inc., 505 Huntmar Park Drive, Suite 300, Herndon, Virginia 20170.

Ernst & Young LLP, our independent registered public accounting firm, reports directly to the Audit Committee.

Please refer to the Audit Committee Report, which is set forth in this proxy statement, for a further description of our Audit Committee’s responsibilities and its recommendation with respect to our audited consolidated financial statements for fiscal year 2017.2018.

Compensation Committee

The Compensation Committee held five meetings in fiscal year 2017.2018. The Compensation Committee of the Board of Directors reviews and makes recommendations to the Board regarding cash compensation and non-equity benefits of executive officers and key employees of the Company. The Compensation Committee also administers and makes awards under the Company’s stock plan. One of the key duties of the Compensation Committee is to provide a general review of our compensation and benefit plans to ensure that they meet our objectives. In addition, the Compensation Committee reviews the compensation of the Chairman and the Chief Executive Officer as well as the Chief Executive Officer’s recommendations on compensation of our executive officers and makes recommendations for adopting and changing major compensation policies and practices. The Compensation Committee reports its recommendations for cash and non-equity compensation to the full Board of Directors for approval and authorization. The Compensation Committee is composed of directors who are independent under Nasdaq listing standards (as adopted under SEC rules) and non-employee directors (as defined in Rule 16b-3 under the Securities Exchange Act) and who do not have “interlocking” or other relationships with us that would detract from their independence as committee members. At all times, at least two members of the committee shall be outside directors (as defined in Section 162(m) of the Internal Revenue Code). The current members of the Compensation Committee are Neil Novich, Barbara Fast, Richard Frost, and Alan Gershenhorn, each of whom is independent under Nasdaq listing standards. Mr. Novich currently serves as the Chairman of the Compensation Committee.

The Compensation Committee operates under a formal charter that governs its duties and conduct. The Compensation Committee charter complies with applicable Nasdaq and SEC rules and regulations. A copy of the charter is available on our web site at www.becn.com. In addition, the charter is available in print to any shareholder who requests it in writing to our Chief Financial Officer at Beacon Roofing Supply, Inc., 505 Huntmar Park Drive, Suite 300, Herndon, Virginia 20170.

Please refer to the Compensation Discussion and Analysis and the Compensation Committee Report in this proxy statement for a further description of our Compensation Committee’s responsibilities, as well as its

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compensation philosophy and a description of considerations underlying each component of compensation paid to Beacon’s executive officers for fiscal year 2017.2018.

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Nominating and Corporate Governance Committee

The Nominating and Corporate Governance Committee held fivethree meetings in fiscal year 2017.2018. The Nominating and Corporate Governance Committee is responsible for identifying and recommending potential candidates qualified to become Board members, recommending directors for appointment to Board committees, establishing and maintaining compliance with corporate governance guidelines, and reporting to the Board of Directors on the Board’s self-evaluation questionnaire. The Nominating and Corporate Governance Committee is currently composed of Richard Frost, Alan Gershenhorn, Stuart Randle and Douglas Young, each of whom is independent under Nasdaq listing standards. Mr. Frost currently serves as the Chairman of the Nominating and Corporate Governance Committee.

When identifying, evaluating and considering potential candidates for membership on our Board, including those who might be recommended or nominated by our shareholders, the Nominating and Corporate Governance Committee considers, among other factors, relevant business and financial experience, integrity and willingness to devote the necessary time and energy. Although the Company’s corporate governance guidelines do not prescribe specific diversity standards, as a matter of practice, the Board considers diversity in the context of the Board as a whole and takes into account considerations relating to ethnicity, gender, cultural diversity and the range of perspectives that the directors bring to their work. Our Board seeks independent directors with a broad diversity of experience, professions, skills, geographic representation and backgrounds that will enhance the quality of the Board’s deliberations and decisions. The Board is committed to actively seeking out highly qualified women and individuals from minority groups as well as candidates with diverse backgrounds, skills and experiences as part of the director selection process, and any search firm engaged by the Committee will be tasked with considering the characteristics described in the governance guidelines. The Committee also leads the Board in an annual self-evaluation to determine whether the Board and its committees are functioning effectively and in compliance with the governance guidelines. This self-evaluation includes a review and assessment of the continuing independence of the Board’s non-management directors and whether Board membership and size reflects an appropriate level of diversity.  

The Nominating and Corporate Governance Committee will consider nominees for our Board of Directors recommended by our shareholders, using the same criteria as for other candidates. Recommendations should be submitted in writing to Ross D. Cooper, our corporate secretary, at 505 Huntmar Park Drive, Suite 300, Herndon, VA 20170. The recommendation should include the name and address of the shareholder making the recommendation and evidence of his or her ownership of our common stock, including the number of shares and period of ownership, the name and address of the director candidate, and his or her resume or listing of qualifications, and the candidate’s signed consent to serve as a director if elected and to be named in the Proxy Statement. To be considered, the recommendation must be received by the secretary not less than 90 calendar days and not more than 120 calendar days before the one-year anniversary date of our most recent Annual Meeting of Shareholders. The Nominating and Corporate Governance Committee may consider advice and recommendations from others, including search firms as it deems appropriate.

The Nominating and Corporate Governance Committee operates under a formal charter that governs its duties and conduct. The Nominating and Corporate Governance Committee charter complies with applicable Nasdaq and SEC rules and regulations. A copy of the charter isand the governance guidelines are available on our website at www.becn.com. In addition, the charter isand guidelines are available in print to any shareholder who requests it in writing to our Chief Financial Officer at Beacon Roofing Supply, Inc., 505 Huntmar Park Drive, Suite 300, Herndon, Virginia 20170.

How may the Board be contacted?

Shareholders or other interested parties wishing to communicate confidentially with our Board of Directors can call 866-574-1199 in the United States and leave a message for the Chair of the Audit Committee, the Board of Directors or an individual director. In the alternative,Alternatively, shareholders and other interested parties may communicate with the Board of Directors or an individual director in writing by mailing such communication to Beacon Roofing Supply, Inc., 505 Huntmar Park Drive, Suite 300, Herndon, Virginia 20170, Attn: Chief Financial Officer. Each communication intended for members of the Board of Directors and received by the Chief Financial Officer will be reviewed by the Chief Financial Officer. Communications related to the operation of the Company which are not sales solicitations or of a similar commercial nature will be forwarded to the specified party or parties.

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How are directors compensated?

Please see “Compensation of Directors” in the Information on Executive Compensation section of this proxy statement.

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AUDIT COMMITTEE MATTERS

Audit Committee’s Pre-Approval and Procedures

The Audit Committee is responsible for the appointment, compensation, retention and oversight of the work of Ernst & Young LLP, our independent registered public accounting firm. The independent registered public accounting firm reports directly to the Audit Committee. As part of its responsibility, the Audit Committee established a policy requiring the pre-approval of all audit and permissible non-audit services performed by the registered public accounting firm. In pre-approving services, the Audit Committee considers whether such services are consistent with the SEC’s rules on auditor independence.

Prior to the engagement of the registered public accounting firm for an upcoming audit/non-audit service period, defined as a twelve-month timeframe, Ernst & Young LLP submits a detailed list of services expected to be rendered during that period as well as an estimate of the associated fees for each of the following four categories of services to the Audit Committee for approval.

Audit Services consist of services rendered by an external auditor for the audit of our annual consolidated financial statements (including audit services performed to audit the Company’s accounting for income taxes) and internal controls and reviews of our quarterly financial statements. It also includes services that generally only an external auditor can reasonably provide, such as comfort letters, statutory audits, attest services, consents and assistance with and review of documents filed with the Securities and Exchange Commission.

Audit-Related Services consist of assurance and related services (e.g. due diligence) by an external auditor that are reasonably related to audit or review of financial statements, including employee benefit plan audits, due diligence related to mergers and acquisitions, subscriptions for accounting research software, and accounting consultations.

Tax Services consist of services not included in Audit Services above, rendered by an external auditor for tax compliance, tax consulting and tax planning.

Other Non-Audit Services are any other permissible work that is not an Audit, Audit-Related or Tax Service.

Circumstances may arise during the twelve-month period when it may become necessary to engage the independent auditor for additional services not contemplated in the original pre-approval. In those instances, the Audit Committee requires specific pre-approval before engaging the independent auditor. The chairman of the Audit Committee, acting pursuant to delegated authority, may pre-approve any non-audit services, up to a limit of $20,000.

Audit and Non-Audit Fees

The table below summarizes the fees and expenses billed by our independent registered public accounting firm, Ernst & Young LLP, for the fiscal years ended September 30, 20172018 and September 30, 2016.2017.

Audit fees include fees and expenses for professional services rendered for the audit of our annual consolidated financial statements, the audit of our internal controls, the reviews of the interim financial statements, issued comfort letters and other services related to the fivethree acquisitions during fiscal year 2017.2018.

The audit-related services reflect the subscription fee for accounting research software and due diligence fees associated with the review of Allied acquisition.

Tax fees represent professional services related to tax compliance and consulting, including those associated with acquisitions and tax due diligence in the U.S. and Canada.

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The Audit Committee has considered the compatibility of the provision of services covered by the preceding paragraph with the maintenance of the principal accountant’s independence from the Company and has determined that the provision of such services is not incompatible with the maintenance of such independence.

The Audit Committee annually reviews the performance of the independent registered public accounting firm and the fees charged for its services.

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Report of the Audit Committee

The role of the Audit Committee is to assist the Board of Directors in its oversight of the integrity of the Company’s financial reporting process and compliance with legal and regulatory requirements. The Audit Committee reviews the Company’s financial reporting process on behalf of the Company’s Board of Directors. Management has the primary responsibility for the financial statements and the reporting process, including internal controls.

In this context, the Audit Committee has met and held discussions with management and the Company’s independent registered public accounting firm. The Audit Committee has reviewed and discussed the audited financial statements with management and the independent registered public accounting firm. The Audit Committee discussed with the independent registered public accounting firm matters required to be discussed by Auditing Standard No. 1301, Communications with Audit Committees, issued by the Public Company Accounting Oversight Board. The Audit Committee has discussed with the independent registered public accounting firm the auditor’s independence from the Company and management. In addition, the Audit Committee received the written disclosures and the letter from the independent registered public accounting firm required by the applicable requirements of the Public Company Accounting Oversight Board, regarding the independent public accounting firm’s communications with the Audit Committee concerning independence.

In reliance on the reviews and discussions referred to above, the Audit Committee approvedrecommended to the Board that the audited financial statements be included in the Company’s Annual Report on Form 10-K for the year ended September 30, 2017.

2018.

AUDIT COMMITTEE:

Carl T. Berquist, Chairman

Robert M. McLaughlin

Douglas L. Young

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EXECUTIVE OFFICERS

Our executive officers are elected by and serve at the discretion of the Board of Directors. Information on our executive officers who were serving as of the end of fiscal year 20172018 is as follows:

Robert R. Buck — Chairman. Mr. Buck joined us as President and Chief Executive Officer (CEO) and was first elected a director in October 2003. He2003 and was appointed as Chairman of the Board in March 2007 and remained CEO until January 1, 2011.2007. Prior to joining us, he served as President-UniformPresident — Uniform Rental Division of Cintas Corporation from 1997 to 2003. From 1991 through 1997, he served as Senior Vice President -— Midwest Region of Cintas. From 1982 through 1991, he served as Senior Vice President-FinancePresident — Finance and Chief Financial Officer of Cintas. Mr. Buck presently serves on the Boardsboards of Multi-Color Corporation and Quanex Building Products Corporation, both publicly-traded companies, and Elkay Manufacturing.Manufacturing, a privately held company. Mr. Buck has a bachelor’s degree from the University of Cincinnati.

Paul M. Isabella — President and Chief Executive Officer. Mr. Isabella joined us in November 2007 as President and Chief Operating Officer in November 2007 and was promoted to CEO effectiveChief Executive Officer in January 1, 2011. Mr. Isabella also became a director in February 2011. Prior to joining us, he served as Executive Vice President of Cooper Industries Inc., a manufacturer of electrical and other products, from 2005 to 2007 and Senior Vice President of Stanley Works a manufacturer of tools and hardware and a provider of security products, from 1999 to 2005. He began his career with General Electric Company in 1977 and worked in various GE businesses for 22 years. Mr. Isabella has a bachelor’sB.S. degree from State University of New York at Cortland.

Joseph M. Nowicki — Executive Vice President, Chief Financial Officer. Mr. Nowicki joined us as Executive Vice President and Chief Financial Officer on April 1,in March 2013. He was the Chief Financial Officer and Treasurer for Spartan Motors, Inc., a custom chassis and vehicle manufacturer, from June 2009 to March 2013. Prior to Spartan, he was with Herman Miller, Inc., a furniture manufacturer, from 1992 through 2009 where he held progressive financial roles, lastly as Vice President, Investor Relations and Treasurer. He also held past financial positions with IBM and General Motors. Mr. Nowicki presently serves on the Boards of ASV Holdings, Inc. and Diversified Restaurant Holdings, Inc. Mr. Nowicki is a Certified Public Accountant and holds a bachelor’s degree from Canisius College and an M.B.A. from the University of Michigan.

Ross D. Cooper — Executive Vice President, General Counsel and Secretary. Mr. Cooper joined us in July 2006 and was promoted to Executive Vice President effective October 1, 2015. Prior to joining us, Mr. Cooper was a shareholder of Shulman, Rogers, Gandal, Pordy & Ecker, P.A., a law firm, since 1999. From 1996 to 2006, Mr. Cooper served as outside general counsel to Building Suppliers Corporation, LLC, an organization of roofing and construction materials wholesale distributors. Mr. Cooper received a bachelor’s degree in civil engineering from Cornell University and a J.D. from George Washington University Law School.

20C. Eric Swank — Chief Operating Officer. Mr. Swank joined us in October 2004 as our Vice President of Human Resources and was promoted to Senior Vice President of Sales and Marketing in 2005. He was then named Senior Vice President Operations for the Mid-Atlantic region in January 2006 while maintaining responsibility for sales and marketing until 2007. In 2013, he was appointed Executive Vice President of the East Division and added the Chief Sales and Marketing Officer role in 2016. Upon the acquisition of Allied in January 2018, Mr. Swank was promoted to the role of the Chief Commercial Officer, where he assumed oversight of commercial strategy, including branding, marketing, sales, e-commerce, product management and pricing. On January 2, 2019, Mr. Swank was named Chief Operating Officer, assuming the lead over Beacon’s roofing and exterior products business in addition to retaining Company-wide responsibility for sales, marketing, and supply chain. Prior to joining Beacon in October 2004, Mr. Swank spent thirteen years with Cintas Corporation in various roles of increasing responsibility. He is a graduate of Miami University of Ohio.

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Christopher A. Harrison — Executive Vice President, Chief Human Resources Officer. Mr. Harrison joined Beacon in 2014 from WABCO Group in Brussels, Belgium, where he was Chief Human Resources Officer for the $2.5 billion global commercial vehicle, braking and vehicle controls systems company with 10,000 employees worldwide in 2013. Prior to his role at WABCO, Mr. Harrison had established a successful career based on roles of increasing responsibility in human resources, product development, acquisition integration and portfolio optimization with several multi-national organizations including Stanley Black & Decker, ITT Corporation and TE Connectivity. Mr. Harrison received a Bachelor of Science degree from Southern Connecticut State University and his MBA from Rensselaer Polytechnic Institute.

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INFORMATION ON EXECUTIVE COMPENSATION

Compensation Discussion and Analysis

Overview

The responsibilities of our Compensation Committee are to review our compensation and benefit plans to ensure that they meet our objectives, as well as review the Chief Executive Officer’s performance, recommend the annual compensation of the Chairman and the Chief Executive Officer, review the Chief Executive Officer’s recommendations on compensation of our other executive officers, and make recommendations for adopting and changing major compensation policies and practices. The Compensation Committee reports its recommendations for cash and non-equity compensation to the full Board of Directors for approval and authorization. The Compensation Committee also administers and approves equity awards under our stock plan.

Objectives of Compensation Program

Our compensation practices are intended to attract, motivate and retain highly competent executives in a competitive marketplace. The program provides named executive officers listed in our summary compensation table with compensation that is industry competitive, internally equitable and commensurate with their skills, knowledge, experience and responsibilities.

The primary objective of our executive compensation program is to firmly align total executive compensation with the long term interests of our shareholders and the attainment of our annual and long-term performance goals. The annual goals are principallygenerally based upon our adjusted income before income taxes and the long-term goals are principallywere historically based on metrics such as our stock price, return on invested capital (“ROIC”), Adjusted Earnings Per Share, acquisition synergies and return on invested capital,average organic sales growth, and for fiscal year 2017,2018, Adjusted Earnings Per Share and average organic net sales growth rate.acquisition synergies. Adjusted Earnings Per Share (“Adjusted EPS”) meansis defined as net income per share, as reported in the Company’s consolidated financial statements, adjusted to add back acquisition costs, and certain incrementalthe amortization of intangibles, related tobusiness restructuring costs, and the RSG transaction.non-recurring effects of tax reform, divided by the weighted-average diluted shares outstanding for the period after assuming full conversion of the participating Preferred Stock.

The compensation of our executive officers consists of base salary, cash bonuses,incentives, long-term incentive compensation in the form of Company stock options and restricted stock awards, and certain perquisites such as an auto allowance and fuel reimbursement. From time to time, the Company will also pay for relocation expenses, including temporary housing, commuting airfare, automobile lease and related expenses, associated with relocating executives.

Use of Consultants and Peer Group Data

The Company establishes executive compensation levels through evaluation of a comprehensive benchmarking analysis prepared by Frederic W. Cook & Co., Inc. (“Cook & Co.”), an independent compensation consultant retained by the Compensation Committee. Although the Company does not use strict numeric benchmarking to establish individual executive compensation levels, the Company takes into account the median level of compensation for similarly situated executives at the peer group companies used by the Compensation Committee to guide executive compensation decisions. Where direct comparisons are not available from the peer group, we utilize market-based executive pay survey data on similarly situated executives to help guide our decisions. Because job content, accountability, responsibility, incumbent seniority and performance criteria vary from one company to the next, our Compensation Committee uses the numerical benchmarking data and median levels of similarly situated executives information as a guideline in exercising its discretion in determining compensation for our executive officers.

In reviewing and determining executive compensation levels for fiscal year 2017,2018, Cook & Co. reviewed the latest data for a peer group of distribution companies, most of which are of similar sales, earnings, market capitalization and complexity as the Company, in developing its recommendations for executive compensation to the Compensation Committee. Based on the review performed by Cook & Co., and at its recommendation, we utilized the followingmodified our peer group utilized in fiscal year 2017 to assessassessing our executive compensation (the same group that was utilized infor fiscal year 2016): Airgas,2018 to be comprised of the following companies: Anixter International, Applied Industrial Technologies, BMC Stock Holdings, Builders

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FirstSource, Kaman,Fastenal Company, HD Supply Holdings, LKQ Corporation, MRC Global, MSC Industrial Direct, NOW, Patterson Companies, Pool Corp.,Corporation, Univar, Veritiv Corporation, Watsco, Wesco Aircraft HoldingsW.W. Grainger and WESCO International.

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The Compensation Committee used the peer group data as general guidance, together with other information such as general business trends, the competitiveness of the markets in which we operate, individual performance, and its own judgment in setting overall executive compensation. In addition, the Committee considered the results of the then most recent shareholder advisory vote on our executive compensation held on February 19, 2016, in13, 2018, at which approximately 99% of the shares present at the meeting and entitled to votevoting supported the compensation of our named executive officers. Although the approval was advisory in nature, the Committee viewed the overwhelmingly positive response as confirmation that our shareholders generally believe that the pay of the named executive officers is appropriately aligned with their performance and the performance of the Company as well as the interests of our shareholders.

The Compensation Committee considered various factors bearing upon Cook & Co.’s independence and determined that Cook & Co. is independent and that its engagement did not present any conflicts of interest. Cook & Co. provides no other services to the Company.

Base Salaries

The first element of our compensation program is salary. As noted above, the Compensation CommitteeEach year, our Board of Directors evaluates the performance of our Chairman and our Chief Executive Officer, and the Compensation Committee considers the Board’s evaluations in determining an appropriate overall compensation package for our Chairman and Chief Executive Officer.  The Compensation Committee recommends theirthe salaries of our Chairman and Chief Executive Officer to the full Board of Directors in light of those evaluations. The Compensation Committee reviews the base salaries of the Chairman and the Chief Executive Officer on an annual basis in consideration of their performance during the previous year.For fiscal year 2018, Mr. Buck’s base salary remained at $300,000 for fiscal year 2017.$300,000. The Compensation Committee considered the following quantitative and qualitative factors in evaluating the Chairman’s performance in setting fiscal year 20172018 compensation:

Mr. Isabella’s base salary was set at $800,000$850,000 for fiscal year 2017.2018. The Compensation Committee considered the following quantitative and qualitative factors in evaluating the Chief Executive Officer’s performance in setting fiscal year 20172018 compensation:

Base salaries of our executive officers other than the Chairman and the Chief Executive Officer are also recommended annually by the Compensation Committee to the full Board of Directors after consultation with, and upon the recommendation of, the Chief Executive Officer. The base salary of each executive officer is recommended by the Chief Executive Officer to the Compensation Committee after evaluating each executive officer’s performance over the year in consideration of (i) the Company’s overall financial performance, (ii) the individual’s performance during the year and contributions to the Company, and (iii) other relevant factors (for example, market conditions).

The Compensation Committee considers a number of factors when evaluating the Chief Executive Officer’s recommendations regarding base salaries for the other executive officers. Periodically, the Compensation Committee reviews industry specific compensation surveys that provide detailed information regarding the

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compensation practices of industry peers, competitors and companies of similar market value. Other information that the Committee deems relevant, such as general business trends, the competitiveness of the markets in which we operate and special circumstances, also may be considered in its evaluation.

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Annual Cash Incentives

The second element of our compensation program is an annual cash incentive. Annual incentives are a significant component of executive compensation, reflecting the Company’s belief that management’s contribution to long-term shareholder returns (via increasing stock prices) comes from increasing current earnings and properly preparing the Company for future earnings growth. We believe these incentives play a key role in enabling us to attract, retain and motivate our employees.

For fiscal year 2017,2018, under the terms of our management cash incentive plan, a target incentive amount was set for each participant. Those amounts are set forth below in the Grants of Plan-Based Awards table under the heading “Target.”

The incentives for our executive officers named in the Summary Compensation Table were based 80% on a Company-wide adjusted earnings before taxes (“AEBT”) target and 20% on qualitative performance evaluations of strategic performance goals. AEBT means income before taxes, as reported in the Company’s consolidated financial statements, adjusted to exclude amortization and stock compensation expense and the impact of significant: gains (losses) on the disposal of assets; asset impairments, retirements or write-downs; gains (losses) associated with legal, insurance or tax settlements/adjustments; restructuring, severance or pension-related charges; or other similar items out of the ordinary course of business.

If the AEBT target was not met at the 100% level, the participant’s bonus with respect to that target was pro-rated on a straight line basis if the participant achieved a range of 80% to 100% of target, with no bonus paid at or less than 80% of target. The individual strategic performance goals are outlined below. In addition, each participant (excluding our Chairman) could receive an additional incentive above the target incentive amount if actual AEBT exceeded 100% of AEBT target (in an amount up to 100% of the AEBT portion of the target incentive if actual AEBT performance is 120% of the AEBT target) and an additional incentive if qualitative performance goals are exceeded (in an amount up to 20% of the qualitative portion of the target incentive if actual qualitative goals performance is 120% of target performance). Taken together, each participant (excluding our Chairman) could earn an additional incentive up to 84% of their target incentive. The Compensation Committee performs the individual qualitative performance evaluations of our Chairman and Chief Executive Officer, and our Chief Executive Officer performs the qualitative performance evaluations of the remaining named executive officers and presents the results to the Compensation Committee.

For fiscal year 2017,2018, the Company achieved AEBT of approximately $283.4$300.5 million, compared to an established target of approximately $292.9$395.5 million for the named executives. Our Board of Directors established the annual AEBT target based on market conditions and reasonable rates of expected annual growth. Based on the Company’s actual AEBT results abovethat fell below target, each participant earned a total of 85% ofdid not earn the AEBT portion of their target incentive. The qualitative portions of the performance bonus are described below. The incentive amounts paid to each named executive officer for fiscal year 20172018 are set forth below in the Summary Compensation Table under the heading “Non-Equity Incentive Plan Compensation.” Total incentives earned for fiscal year 2017,2018, comprised solely of the incentive resulting from the Company’s achievement of AEBT and their individual qualitative performance evaluations, were $158,400$36,000 for Mr. Buck, $704,000$195,500 for Mr. Isabella, $228,501$63,215 for Mr. Nowicki, and $194,978$52,381 for Mr. Cooper.Swank, and $44,880 for Mr. Harrison.

In addition to the duties and responsibilities associated with their executive positions, each of our named executive officers are assigned specific strategic performance goals in order to qualify for part or all of a 20% portion of their target incentive amount. If the goal objectives are exceeded, each named executive office can receive an additional incentive. For fiscal year 2017,2018, these specific management objectives were largely equally weighted and are described below, along with the percentage of the target incentive amount earned by the complete achievement of the objective. In each case, each percentage can increase up to 20% (for example, 5% can be increased to 6%) if the performance criteria for the goal objective is exceeded.

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Mr. Buck — in addition to providing strategic direction to the Company, its executive team, and its Board of Directors, and providing guidance to the Company’s investor relations efforts, Mr. Buck’s specific fiscal year 20172018 goals were:

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The following table sets forth the individual grants of plan-based awards to the named executive officers during the fiscal year ended September 30, 2017:2018:

FISCAL YEAR 20172018 GRANTS OF PLAN-BASED AWARDS