This Form 10-Q contains both historical and forward-looking statements regarding ABM and its subsidiaries (collectively referred to as “ABM,” “we,” “us,” “our,” or the “Company”). We make forward-looking statements related to future expectations, estimates, and projections that are uncertain and often contain words such as “anticipate,” “believe,” “could,” “estimate,” “expect,” “forecast,” “intend,” “likely,” “may,” “outlook,” “plan,” “predict,” “should,” “target,” or other similar words or phrases. These statements are not guarantees of future performance and are subject to known and unknown risks, uncertainties, and assumptions that are difficult to predict. Particular risks and uncertainties that could cause our actual results to be materially different from those expressed in our forward-looking statements include those listed below.

The list of factors above is illustrative and by no means exhaustive. Additional information regarding these and other risks and uncertainties we face is contained in our Annual Report on Form 10-K for the year ended October 31, 2022, and in other reports (including all amendments to those reports) we file from time to time with the Securities and Exchange Commission (“SEC”).

We urge readers to consider these risks and uncertainties in evaluating our forward-looking statements. We caution readers not to place undue reliance upon any such forward-looking statements, which speak only as of the date made. We undertake no obligation to publicly update any forward-looking statements, whether as a result of new information, future events, or otherwise, except as required by law.

ABM is a leading provider of integrated facility services with a mission to make a difference, every person, every day. We are organized into four industry groups and one Technical Solutions segment:

Through these groups, we offer janitorial, facilities engineering, parking, and specialized mechanical and electrical technical solutions, on a standalone basis or in combination with other services.

The accompanying unaudited consolidated financial statements have been prepared in accordance with (i) United States generally accepted accounting principles (“U.S. GAAP”) for interim financial information and (ii) the instructions to Form 10-Q and Article 10 of Regulation S-X. In the opinion of our management, our unaudited consolidated financial statements and accompanying notes (the “Financial Statements”) include all normal recurring adjustments that are necessary for the fair statement of the interim periods presented. Interim results of operations are not necessarily indicative of results for the full year. The Financial Statements should be read in conjunction with our audited consolidated financial statements (and notes thereto) in our Annual Report on Form 10-K for the year ended October 31, 2022. Unless otherwise indicated, all references to years are to our fiscal years, which end on October 31.

We round amounts in the Financial Statements to millions and calculate all percentages and per-share data from the underlying whole-dollar amounts. Thus, certain amounts may not foot, crossfoot, or recalculate based on reported numbers due to rounding.

We operate certain parking facilities under management reimbursement arrangements. Under these arrangements, we manage the parking facilities for management fees and pass through the revenues and expenses associated with the facilities to the owners. These revenues and expenses are reported in equal amounts as costs reimbursed from our managed locations. Management reimbursement revenue for the three and nine months ended

In March 2020, the Financial Accounting Standards Board (“FASB”) issued ASU 2020-04, Reference Rate Reform (Topic 848), Facilitation of the Effects of Reference Rate Reform on Financial Reporting. This ASU provides optional expedients to assist with the discontinuance of LIBOR.London Interbank Offered Rate (“LIBOR”). The expedients allow companies to ease the potential accounting burden when modifying contracts and hedging relationships that use LIBOR as a reference rate, if certain criteria are met. In January 2021, FASB issued ASU 2021-01, Reference Rate Reform (Topic 848): Scope. This ASU clarifies that derivatives affected by the discounting transition are explicitly eligible for certain optional expedients and exceptions under Topic 848. Effective November 1, 2022, we applied available practical expedients under ASCTopic 848 to account for modifications, changes in critical terms, and updates to the designated

On September 1, 2022, we completed the acquisition of all of the equity interests of RavenVolt, Inc. (“RavenVolt”), a nationwide provider of advanced turn-key microgrid systems utilized by diversified commercial and industrial customers, national retailers, utilities, and municipalities. RavenVolt’s operations are included within our Technical Solutions segment. The transaction met the definition of a business combination. We applied the acquisition method of accounting.

The initial purchase price for the acquisition was approximately $170.0 million in cash at closing (subject to customary working capital and net debt adjustments) plus the potential of post-closing contingent consideration of up to $280.0 million. The post closing contingent consideration is payable in cash in calendar years 2024, 2025, and 2026 if RavenVolt’s earnings before interest, taxes, depreciation, and amortization (EBITDA)(“EBITDA”), as defined in the RavenVolt merger agreement, meets or exceeds certain defined targets. The maximum contingent consideration that is payable in calendar years 2024, 2025, and 2026 is $75.0 million, $75.0 million, and $130.0 million, respectively. If the EBITDA achieved for calendar years 2023 — 2023–2025 cumulatively meets the defined EBITDA targets, the entire $280.0 million would be paid in calendar year 2026, minus any earn-out payments made in 2024 and 2025. The estimate of the fair value of the contingent consideration on the date of acquisition, was $59.0 million.

The assets acquired and liabilities assumed were recognized at their acquisition date fair values. The acquisition accounting is subject to change as the Company obtains additional information during the measurement period about the facts and circumstances that existed as of the acquisition date. The final acquisition accounting may include changes to intangible assets, deferred taxes, and deferred revenuetaxes within the measurement period not to exceed one year from the acquisition date. Goodwill arising from the RavenVolt Acquisition is not deductible for income tax reporting purposes. As of JanuaryJuly 31, 2023, we recorded preliminary goodwill and intangibles of $207.4 million and $16.7 million, respectively. The total assets acquired, excluding goodwill and intangibles, and liabilities assumed amounted to $49.3 million and $44.5 million, respectively.

We generate revenues under several types of contracts, which are further explained below. Generally, the type of contract is determined by the nature of the services provided by each of our major service lines throughout our reportable segments; therefore, we disaggregate revenues from contracts with customers into major service lines. We have determined that disaggregating revenues into these categories best depicts how the nature, amount, timing, and uncertainty of revenues and cash flows are affected by economic factors. Our reportable segments are B&I, M&D, Education, Aviation, and Technical Solutions, as described in Note 12, “Segment Information.”

We have arrangements under various contract types, as described in Note 2, “Basis of Presentation and Significant Accounting Policies,” in our Annual Report on Form 10-K for the year ended October 31, 2022.

Certain arrangements involve variable consideration (primarily per transaction fees, reimbursable expenses, and sales-based royalties). We do not estimate the variable consideration for these arrangements; rather, we recognize these variable fees as they are earned. Some of our contracts, often related to Airline Services, may also include performance incentives based on variable performance measures that are ascertained exclusively by future performance and therefore cannot be estimated at contract inception and are recognized as revenue once known and mutually agreed upon. We include estimated amounts in the transaction price to the extent it is probable that a significant reversal of cumulative revenue recognized will not occur when the uncertainty associated with the variable consideration is resolved. Our estimates of variable consideration and determination of whether to include estimated amounts in the transaction price are based largely on an assessment of our anticipated performance and all information (historical, current, and forecasted) that is reasonably available to us.

The majority of our contracts include performance obligations that are primarily satisfied over time as we provide the related services. These contract types include: monthly fixed-price; square-foot; cost-plus; work orders; transaction-price; hourly; management reimbursement; leased location; allowance; energy savings contracts; and fixed-price repair and refurbishment contracts, as well as our franchise and royalty fee arrangements. We recognize revenue as the services are performed using a measure of progress that is determined by the contract type. Generally, most of our contracts are cancelable by either party without a substantive penalty, and the majority have a notification period of 30 to 60 days.

We primarily account for our performance obligations under the series guidance, using the as-invoiced practical expedient when applicable. We apply the as-invoiced practical expedient to record revenue as the services are provided, given the nature of the services provided and the frequency of billing under the customer contracts. Under this practical expedient, we recognize revenue in an amount that corresponds directly with the value to the customer of our performance completed to date and for which we have the right to invoice the customer.

The timing of revenue recognition, billings, and cash collections results in contract assets and contract liabilities, as further explained below. The timing of revenue recognition may differ from the timing of invoicing to customers.

Contract assets primarily consist of billed trade receivables, unbilled trade receivables, and costs incurred in excess of amounts billed. Billed and unbilled trade receivables represent amounts from work completed in which we

Contract liabilities consist of deferred revenue and advance payments and billings in excess of revenue recognized. We generally classify contract liabilities as current since the related contracts are generally for a period

The following tables present the balances in our contract assets and contract liabilities:

In addition to assets and liabilities that are measured at fair value on a recurring basis, we are also required to measure certain items at fair value on a non-recurring basis. These assets can include: goodwill; intangible assets; property, plant and equipment; lease-related ROU assets; and long-lived assets that have been reduced to fair value when they are held for sale. If certain triggering events occur, or if an annual impairment test is required, then we would evaluate these non-financial assets for impairment. If an impairment were to occur, then the asset would be recorded at the estimated fair value, using primarily unobservable Level 3 inputs.

We use a combination of insured and self-insurance programs to cover workers’ compensation, general liability, automobile liability, property damage, and other insurable risks. For the majority of these insurance programs, we retain the initial $1.0 million to $1.5 million of exposure on a per-occurrence basis, either through deductibles or self-insured retentions. Beyond the retained exposures, we have varying primary policy limits ranging between $1.0 million and $5.0 million per occurrence. To cover general liability and automobile liability losses above these primary limits, we maintain commercial umbrella insurance policies that provide aggregate limits of $200.0 million. Our insurance policies generally cover workers’ compensation losses to the full extent of statutory requirements. Additionally, to cover property damage risks above our retained limits, we maintain policies that provide per occurrence limits of $75.0 million. We are also self-insured for certain employee medical and dental plans. We maintain stop-loss insurance for our self-insured medical plan under which we retain up to $0.5 million of exposure on a per-participant, per-year basis with respect to claims.

We maintain our reserves for workers’ compensation, general liability, automobile liability, and property damage insurance claims based upon known trends and events and the actuarial estimates of required reserves considering the most recently completed actuarial reports. We use all available information to develop our best estimate of insurance claims reserves as information is obtained. The results of actuarial reviews are used to estimate our insurance rates and insurance reserves for future periods and to adjust reserves, if appropriate, for prior years.

We review our self-insurance liabilities on a regular basis and adjust our accruals accordingly. Actual claims activity or development may vary from our assumptions and estimates, which may result in material losses or gains. As we obtain additional information that affects the assumptions and estimates used in our reserve liability calculations, we adjust our self-insurance rates and reserves for future periods and, if appropriate, adjust our reserves for claims incurred in prior accounting periods.

During the firstthird quarter of 2023, we performed a comprehensive actuarial review of the majority of our casualty insurance programs to evaluate changes made to claims reserves and claims payment activity for the period of MayNovember 1, 2022, through October 31, 2022April 30, 2023 (the “Actuarial Review”). The Actuarial Review was comprehensive in nature and was based on loss development patterns, trend assumptions, and underlying expected loss costs during the period analyzed.

Based on the results of the Actuarial Review, it was determined that there was no adjustment required forwe decreased our total reserves related to prior years for known claims as well as our estimate of the loss amounts associated with incurred but not reported claims (“IBNR claims”) by $5.3 million during the threenine months ended JanuaryJuly 31, 2023. During the threenine months ended JanuaryJuly 31, 2022, we decreased our total reserves related to prior years by $25.2$36.1 million. We will continue to assess ongoing developments, which may result in further adjustments to reserves.

On September 1, 2017, we refinanced and replaced our then-existing $800.0 million credit facility with a new senior, secured five-year syndicated credit facility (the “Credit Facility”), consisting of a $900.0 million revolving line of credit (the “revolver”“Revolver”) and an $800.0 million amortizing term loan, both of which were scheduled to maturematured on September 1, 2022. In accordance with terms of the Credit Facility, the revolver was reduced to $800.0 million on September 1, 2018.

On June 28, 2021, the Company amended and restated the Credit Facility (the “Amended Credit Facility”), extending the maturity date to June 28, 2026, and increasing the capacity of the revolving credit facility from $800.0 million to $1.3 billion and the then-remaining term loan outstanding from $620.0 million to $650.0 million. The Amended Credit Facility provides for the issuance of up to $350.0 million for standby letters of credit and the issuance of up to $75.0 million in swingline advances. The obligations under the Amended Credit Facility are secured on a first-priority basis by a lien on substantially all of our assets and properties, subject to certain exceptions. Additionally, we may repay amounts borrowed under the Amended Credit Facility at any time without penalty.

At November 1, 2022, we amended our Amended Credit Facility pursuant to the LIBOR Transition Amendment and the Fifth Amendment to replace the benchmark rate at which U.S.-dollar-denominated borrowings bear interest from LIBOR to the forward-looking SOFRSecured Overnight Financing Rate (“SOFR”) term rate administered by CME Group Benchmark Administration Limited. As a result of these amendments, we can borrow at Term SOFR plus a credit spread adjustment of 0.10% subject to a floor of zero.

The Amended Credit Facility contains certain covenants, including a maximum total net leverage ratio of 5.00 to 1.00, a maximum secured net leverage ratio of 4.00 to 1.00, and a minimum interest coverage ratio of 1.50 to 1.00, as well as other financial and non-financial covenants. In the event of a material acquisition, as defined in the Amended Credit Facility, we may elect to increase the maximum total net leverage ratio to 5.50 to 1.00 for a total of four fiscal quarters and increase the maximum secured net leverage ratio to 4.50 to 1.00 for a total of four fiscal quarters. Our borrowing capacity is subject to, and limited by, compliance with the covenants described above. At JanuaryJuly 31, 2023, we were in compliance with these covenants.

The Amended Credit Facility also includes customary events of default, including: failure to pay principal, interest, or fees when due; failure to comply with covenants; the occurrence of certain material judgments; and a change in control of the Company. If certain events of default occur, including certain cross-defaults, insolvency, change in control, or violation of specific covenants, then the lenders can terminate or suspend our access to the Amended Credit Facility, declare all amounts outstanding (including all accrued interest and unpaid fees) to be immediately due and payable, and require that we cash collateralize the outstanding standby letters of credit.

We incurred deferred financing costs of $6.4 million in conjunction with the execution of the Amended Credit Facility and carried over $6.2 million of unamortized deferred financing from initial execution and previous amendments of the Credit Facility. Total deferred financing costs of $12.6 million, consisting of $4.9 million related to the term loan and $7.7 million related to the revolver, are being amortized to interest expense over the term of the Amended Credit Facility.

On March 1, 2022, we entered into an uncommitted receivable repurchase facility (the “Receivables Facility”) of up to $150 million, which got extended throughexpired on March 30, 2023. The Receivables Facility allows the Company to sell a portfolio of available and eligible outstanding U.S. trade accounts receivable to a participating institution and simultaneously agree to repurchase them generally on a monthly basis. Under this arrangement, we make floating rate interest payments equal to the forward-looking term rate based on Secured Overnight Financing Rate (“SOFR”) plus 1.05%. These interest payments are payable monthly in arrears. The repurchase price of the receivables in the facility is the original face value. Outstanding receivables must be repurchased on a date agreed upon by both the buyer and seller, generally on a monthly basis, and on the termination date of the repurchase facility. This facility is considered a secured borrowing and provides the buyer with customary rights of termination upon the occurrence of certain events of default. We have guaranteed all of the sellers’ obligations under the facility.

During the three and nine months ended JanuaryJuly 31, 2023, we made principal payments under the term loan of $8.1 million.million and $24.4 million, respectively. As of JanuaryJuly 31, 2023, the following principal payments are required under the term loan.Amended Credit Facility:

We utilize interest rate swap agreements to fix the variable interest rates on portions of our debt. The purpose of using these derivatives is to reduce our exposure to the interest rate risk associated with variable borrowings. Under these agreements, we typically pay a fixed interest rate in exchange for a SOFR-based variable interest rate on a given notional amount. All of our interest rate swaps are designated and accounted for as cash flow hedges. Changes in the fair value of these derivatives are reported as a component of other comprehensive income and are reclassified into earnings in the period or periods in which the hedged transaction affects earnings. For information regarding the valuation of our interest rate swaps, see Note 6, “Fair Value of Financial Instruments.”