# EDGAR Filing Document

**Accession Number:** 0000868857
**File Stem:** 0001805823-25-000005
**Filing Date:** 2025-12
**Character Count:** 7470
**Document Hash:** 1de438a657572e37a3956c597124910b
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001805823-25-000005.hdr.sgml**: 20251217

**ACCESSION NUMBER**: 0001805823-25-000005

**CONFORMED SUBMISSION TYPE**: 4

**PUBLIC DOCUMENT COUNT**: 1

**CONFORMED PERIOD OF REPORT**: 20251215

**FILED AS OF DATE**: 20251217

**DATE AS OF CHANGE**: 20251217

**REPORTING-OWNER**: 

**OWNER DATA:**
- **COMPANY CONFORMED NAME:** Gan David Y.
- **CENTRAL INDEX KEY:** 0001805823

**ORGANIZATION NAME:**

**FILING VALUES:**
- **FORM TYPE:** 4
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 000-52423
- **FILM NUMBER:** 251579309

**BUSINESS ADDRESS:**
- **BUSINESS PHONE:** 213-593-8038

**MAIL ADDRESS:**
- **STREET 1:** C/O AECOM, 1999 AVENUE OF THE STARS
- **STREET 2:** SUITE 2600
- **CITY:** LOS ANGELES
- **STATE:** CA
- **ZIP:** 90067
**ISSUER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** AECOM
- **CENTRAL INDEX KEY:** 0000868857
- **STANDARD INDUSTRIAL CLASSIFICATION:** SERVICES-ENGINEERING SERVICES [8711]
- **ORGANIZATION NAME:** 07 Trade & Services
- **EIN:** 611088522
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 0930

**BUSINESS ADDRESS:**
- **STREET 1:** 13355 NOEL ROAD
- **STREET 2:** SUITE 400
- **CITY:** DALLAS
- **STATE:** TX
- **ZIP:** 75240
- **BUSINESS PHONE:** (972) 788-1000

**MAIL ADDRESS:**
- **STREET 1:** 13355 NOEL ROAD
- **STREET 2:** SUITE 400
- **CITY:** DALLAS
- **STATE:** TX
- **ZIP:** 75240

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** AECOM TECHNOLOGY CORP
- **DATE OF NAME CHANGE:** 19901017

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

## FORM 4

### STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

[ ] Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

[x] Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

---

| | | |
|:---|:---|:---|
| **1. Name and Address of Reporting Person**<sup>*</sup><br>Gan David Y.<br><sub>(Last) (First) (Middle)</sub><br>C/O AECOM<br>13355 NOEL RD, SUITE 400<br><sub>(Street)</sub><br>DALLAS, TX 75240<br><sub>(City) (State) (Zip)</sub> | **3. Date of Earliest Transaction (Month/Day/Year)**<br>2025-12-15 | **5. Relationship of Reporting Person(s) to Issuer**<br>(Check all applicable)<br>[ ] Director [ ] 10% Owner<br>[X] Officer (give title below) [ ] Other (specify below)<br>_CHIEF LEGAL OFFICER_ |
| **2. Issuer Name and Ticker or Trading Symbol**<br>AECOM [ ACM ] | **4. If Amendment, Date of Original Filed (Month/Day/Year)**<br>  | **6. Individual or Joint/Group Filing (Check Applicable Line)**<br>[X] Form filed by One Reporting Person<br>[ ] Form filed by More than One Reporting Person |

---

## Table I - Non-Derivative Securities

---

|  |  |  |  |  |  |  |  |  |  |  |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1. Title of Security | 2. Transaction Date | 2A. Deemed Execution Date | 3. Transaction Code (V) | 3. Transaction Code (V) | 4. Securities Acquired (A) or Disposed of (D) | 4. Securities Acquired (A) or Disposed of (D) | 4. Securities Acquired (A) or Disposed of (D) | 5. Amount of Securities Beneficially Owned | 6. Ownership Form | 7. Nature of Indirect Beneficial Ownership |
| 1. Title of Security | 2. Transaction Date | 2A. Deemed Execution Date | Code | V | Amount | (A) or (D) | Price | 5. Amount of Securities Beneficially Owned | 6. Ownership Form | 7. Nature of Indirect Beneficial Ownership |
| Common Stock | 2025-12-15 |  | M<sup>(1)</sup> |  | 5976 | A | 0<sup>(1)</sup> | 46991 | D |  |
| Common Stock<sup>(2)</sup> | 2025-12-15 |  | A |  | 6534 | A | $0 | 53525 | D |  |
| Common Stock | 2025-12-15 |  | A<sup>(3)</sup> |  | 14056 | A | $0 | 67581 | D |  |
| Common Stock | 2025-12-15 |  | F<sup>(4)</sup> |  | 10530 | D | $97.96 | 57051 | D |  |
| Common Stock | 2025-12-15 |  | S |  | 6000 | D | 98.85<sup>(5)</sup> | 51051 | D |  |
| Common Stock | 2025-12-17 |  | S |  | 9502 | D | 97.01<sup>(5)</sup> | 41549 | D |  |
| Common Stock |  |  |  |  |  |  |  | 576.55 | I | by Merrill Lynch under AECOM Retirement & Savings Plan (RSP) |

---

## Table II - Derivative Securities

---

|  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1. Title of Derivative Security | 2. Conversion or Exercise Price | 3. Transaction Date | 3A. Deemed Execution Date | 4. Transaction Code (V) | 4. Transaction Code (V) | 5. Number of Derivative Securities Acquired (A) or Disposed of (D) | 5. Number of Derivative Securities Acquired (A) or Disposed of (D) | 6. Date Exercisable and Expiration Date | 6. Date Exercisable and Expiration Date | 7. Title and Amount of Underlying Securities | 7. Title and Amount of Underlying Securities | 8. Price of Derivative Security | 9. Number of Derivative Securities Beneficially Owned | 10. Ownership Form | 11. Nature of Indirect Beneficial Ownership |
| 1. Title of Derivative Security | 2. Conversion or Exercise Price | 3. Transaction Date | 3A. Deemed Execution Date | Code | V | (A) | (D) | Date Exercisable | Expiration Date | Title | Amount or Number of Shares | 8. Price of Derivative Security | 9. Number of Derivative Securities Beneficially Owned | 10. Ownership Form | 11. Nature of Indirect Beneficial Ownership |
| Restricted Stock Units | <sup>(1)</sup> | 2025-12-15 |  | M |  |  | 5976 | <sup>(1)</sup> | <sup>(1)</sup> | Common Stock | 5976 | <sup>(1)</sup> | 0 | D |  |

---

### Footnotes:

(1) 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.

(2) 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.

(3) Represents shares acquired pursuant to AECOM's Performance Earnings Program under the 2020 Stock Incentive Plan.

(4) 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.

(5) The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on August 15, 2025.

**Signature:** Matt Benson, Attorney-in-Fact for David Gan  
**Date:** 2025-12-17

### Remarks:

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.

* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).

** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).

Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.

**Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.**