Company: ABM
Filing Date: 2025-02-14
Form Type: DEFA14A
Source: 0000950170-25-020789
Chunk: 0

Company: ABM INDUSTRIES INC /DE/
Filing Date: 2025-02-14
Form: DEFA14A
Chunk 0
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<div align='center'>UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, DC 20549

SCHEDULE 14A

(RULE 14a-101)

INFORMATION REQUIRED IN PROXY STATEMENT

SCHEDULE 14A INFORMATION

Proxy Statement Pursuant to Section 14(a) of the

Securities Exchange Act of 1934

(Amendment No. ___)</div>

| Filed by the Registrant   ☒ |     | Filed by a Party Other than the Registrant    ☐ |

Check the appropriate box:

☐Preliminary Proxy Statement

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

☐Definitive Proxy Statement

☒Definitive Additional Materials

☐Soliciting Material under § 240.14a-12

<div align='center'>ABM Industries Incorporated

(Name of Registrant as Specified in Its Charter)

(Name of Person(s) Filing Proxy Statement, if Other Than the Registrant)</div>

Payment of Filing Fee (Check all boxes that apply):

☒No fee required.

☐Fee paid previously with preliminary materials.

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

Your Vote Counts! ABM INDUSTRIES INCORPORATED 2025 Annual Meeting Vote by March 25, 2025 11:59 PM ET. For shares held in the ABM Employee Stock Purchase Plan, vote by March 23, 2025 11:59 PM ET. ABM INDUSTRIES INCORPORATED ONE LIBERTY PLAZA 7TH FLOOR NEW YORK, NY 10006 V61053-P22580 You invested in ABM INDUSTRIES INCORPORATED and it’s time to vote! You have the right to vote on proposals being presented at the Annual Meeting. Important notice regarding the availability of proxy materials for the stockholder meeting to be held on March 26, 2025. To participate in the Annual Meeting, go to www.virtualshareholdermeeting.com/ABM2025 and enter the 16-digit control number found on this Notice and access on the date and time noted. Get informed before you vote View the Notice, Proxy Statement and the Annual Report on Form 10-K for the Fiscal Year Ended October 31, 2024 online