Key facts
- This page summarizes David Y. Gan's Form 4 filing for AECOM (ACM).
- 7 reported transactions and 1 derivative row are listed below.
- Accepted by SEC: 17 Dec 2025, 16:06.
David Y. Gan - 15 Dec 2025 Form 4 Insider Report for AECOM (ACM)
- Reporting relationship
- CHIEF LEGAL OFFICER
- Issuer ticker
- ACM
- Reported as of
- 15 Dec 2025
- Net transaction value
- -$2,546,408
- SEC form
- 4
- Accepted by SEC
- 17 Dec 2025, 16:06:58 UTC
- Prior SEC filing
- 18 Dec 2024
- Source filing
- View source filing
- Reporting owner signature
- Matt Benson, Attorney-in-Fact for David Gan
Source evidence
Original filing metadata and source links for verification.
4 source fields
Reporting owner
1 detail
Key filing fact
David Y. Gan filed Form 4 for AECOM (ACM) on 17 Dec 2025.
Change
- Previous filing in this sequence was filed on 18 Dec 2024.
- Current net transaction value: -$2,546,408.
Research use
- This tells you what this filing adds before you inspect full transaction and derivative tables.
- You can trace every row back to the original SEC filing document.
Evidence
Filed on Form 4
View source filing
Ownership activity is grounded in SEC Form 4 disclosures.
Reporting Owners (1)
CIK 0001805823
Primary reporting owner
Gan David Y.
- Relationship
- CHIEF LEGAL OFFICER
- Address
- C/O AECOM, 13355 NOEL RD, SUITE 400, DALLAS
- Signature
- Matt Benson, Attorney-in-Fact for David Gan
- Signature date
- 17 Dec 2025
Reported non-derivative transactions
Shares, units, or other non-derivative securities reported in this filing.
ACM
transaction
Common Stock
Options Exercise
- Transaction value
- $0
- Shares
- +5,976
- Change %
- +15%
- Price
- $0.000000
- Shares after
- 46,991
- Date
- 15 Dec 2025
- Ownership
- Direct
- Footnotes
- F1
ACM
transaction
Common Stock
Award
- Transaction value
- $0
- Shares
- +6,534
- Change %
- +14%
- Price
- $0.000000
- Shares after
- 53,525
- Date
- 15 Dec 2025
- Ownership
- Direct
- Footnotes
- F2
ACM
transaction
Common Stock
Award
- Transaction value
- $0
- Shares
- +14,056
- Change %
- +26%
- Price
- $0.000000
- Shares after
- 67,581
- Date
- 15 Dec 2025
- Ownership
- Direct
- Footnotes
- F3
ACM
transaction
Common Stock
Tax liability
- Transaction value
- $1,031,519
- Shares
- -10,530
- Change %
- -16%
- Price
- $97.96
- Shares after
- 57,051
- Date
- 15 Dec 2025
- Ownership
- Direct
- Footnotes
- F4
ACM
transaction
Common Stock
Sale
- Transaction value
- $593,100
- Shares
- -6,000
- Change %
- -11%
- Price
- $98.85
- Shares after
- 51,051
- Date
- 15 Dec 2025
- Ownership
- Direct
- Footnotes
- F5
ACM
transaction
Common Stock
Sale
- Transaction value
- $921,789
- Shares
- -9,502
- Change %
- -19%
- Price
- $97.01
- Shares after
- 41,549
- Date
- 17 Dec 2025
- Ownership
- Direct
- Footnotes
- F5
ACM
holding
Common Stock
No transaction description listed
- Transaction value
- Shares
- Change %
- Price
- Shares after
- 577
- Date
- 15 Dec 2025
- Ownership
- by Merrill Lynch under AECOM Retirement & Savings Plan (RSP)
Reported derivative securities
Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.
ACM
transaction
Derivative
Restricted Stock Units
Options Exercise
- Transaction value
- Shares
- -5,976
- Change %
- -100%
- Price
- Shares after
- 0
- Date
- 15 Dec 2025
- Ownership
- Direct
- Underlying class
- Common Stock
- Underlying amount
- 5,976
- Exercise price
- Footnotes
- F1
* marks a reported price that did not pass the local price check.
Additional SEC filing notes
Filing notes and footnotes
Rule 10b5-1 trading plan
These transactions were reported as open-market trades under a Rule 10b5-1 plan. The plan lets an insider set trading instructions in advance, which can reduce the risk of trading while in possession of material nonpublic information.
Original filing language: transaction made pursuant to a contract, instruction, or written plan intended to satisfy Rule 10b5-1(c).
Explanation of responses 5 footnotes
Footnote 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.
Footnote 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.
Footnote F3
Represents shares acquired pursuant to AECOM's Performance Earnings Program under the 2020 Stock Incentive Plan.
Footnote 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.
Footnote F5
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.