AECOM — Director's Dealing 2025

Dec 17, 2025

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: AECOM (ACM)
CIK: 0000868857
Period of Report: 2025-12-15

Reporting Person: Poloni Lara (PRESIDENT)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2025-12-15	Common Stock	M	10040	—	Acquired	140231	Direct
2025-12-15	Common Stock	A	16334	—	Acquired	156565	Direct
2025-12-15	Common Stock	A	23615	—	Acquired	180180	Direct
2025-12-15	Common Stock	F	13425	$97.96	Disposed	166755	Direct
2025-12-17	Common Stock	S	17340	$97.01	Disposed	149415	Direct
2025-12-17	Common Stock	S	193	$98.35	Disposed	149222	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2025-12-15	Restricted Stock Units	$	M	10040	Disposed		Common Stock (10040)	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	108.13	Indirect

Footnotes

F1: Each restricted stock unit represents a contingent right to receive, upon vesting, one share of the Issuer's common stock. These restricted stock units were granted on December 15, 2022, and vested in full on December 15, 2025.

F2: Represents annual grant of restricted stock units. Each restricted stock unit represents a contingent right to receive, upon vesting, one share of the Issuer's common stock in accordance with the
Issuer's 2020 Stock Incentive Plan. The restricted stock units vest in full on December 15, 2028, subject to continued service through the vesting date.

F3: Represents shares acquired pursuant to AECOM's Performance Earnings Program under the 2020 Stock Incentive Plan.

F4: Represents shares of common stock withheld by the Issuer to satisfy certain tax withholding obligations in connection with the vesting of the restricted stock units and shares acquired under the Performance Earnings Program.

F5: The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on September 11, 2025.

F6: The price reported is a weighted average price. The shares were sold in multiple transactions at prices ranging from $98.35 to $98.48. The Reporting Person undertakes to provide to the Issuer, any security holder, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range noted in this footnote. The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on September 11, 2025.