David Y. Gan Aecom (ACM) insider trading activity

David Y. Gan is CHIEF LEGAL OFFICER of AECOM. Currently has a direct ownership of 41,549 shares of ACM, which is worth approximately $5.55 Million. The most recent transaction as insider was on Dec 17, 2025, when has been sold 9,502 shares (Common Stock) at a price of $97.01 per share, resulting in proceeds of $921,789. This information was disclosed in a Form 4 filing with the Securities and Exchange Commission (SEC).

Shares Held (Direct Ownership) 41.5K

1.3% 3M change

1.3% 12M change

Total Value Held $5.55 Million

David Y. Gan Transaction History

Date	Transaction	Value	Shares Traded	Shares Held
Dec 17 2025	SELL Open market or private sale	$921,789 $97.01 p/Share	9,502 Reduced 18.61%	41,549 Common Stock
Dec 15 2025	SELL Open market or private sale	$593,100 $98.85 p/Share	6,000 Reduced 10.52%	51,051 Common Stock
Dec 15 2025	SELL Payment of exercise price or tax liability	$1,031,518 $97.96 p/Share	10,530 Reduced 15.58%	57,051 Common Stock
Dec 15 2025	BUY Grant, award, or other acquisition	-	20,590 Added 23.35%	67,581 Common Stock
Dec 15 2025	BUY Exercise of conversion of derivative security	-	5,976 Added 11.28%	46,991 Common Stock
Dec 18 2024	SELL Open market or private sale	$336,996 $111.0 p/Share	3,036 Reduced 6.89%	41,015 Common Stock
Dec 17 2024	SELL Open market or private sale	$701,028 $110.19 p/Share	6,362 Reduced 12.62%	44,051 Common Stock

Dec 16 2024	SELL Open market or private sale	$1,280,640 $111.36 p/Share	11,500 Reduced 18.57%	50,413 Common Stock
Dec 15 2024	SELL Payment of exercise price or tax liability	$1,170,185 $111.51 p/Share	10,494 Reduced 14.49%	61,913 Common Stock
Dec 15 2024	BUY Grant, award, or other acquisition	-	18,847 Added 20.65%	72,407 Common Stock
Dec 15 2024	BUY Exercise of conversion of derivative security	-	6,426 Added 10.71%	53,560 Common Stock
Dec 15 2023	SELL Payment of exercise price or tax liability	$1,556,394 $92.28 p/Share	16,866 Reduced 26.35%	47,134 Common Stock
Dec 15 2023	BUY Grant, award, or other acquisition	-	29,532 Added 31.57%	64,000 Common Stock
Dec 15 2023	BUY Exercise of conversion of derivative security	-	9,190 Added 21.05%	34,468 Common Stock
Dec 16 2022	SELL Payment of exercise price or tax liability	$1,112,014 $82.77 p/Share	13,435 Reduced 34.7%	25,278 Common Stock
Dec 16 2022	BUY Exercise of conversion of derivative security	-	6,503 Added 25.3%	19,205 Common Stock
Dec 16 2022	BUY Grant, award, or other acquisition	-	19,508 Added 33.51%	38,713 Common Stock
Dec 17 2021	BUY Grant, award, or other acquisition	-	10,910 Added 34.39%	20,817 Common Stock
Dec 17 2021	BUY Exercise of conversion of derivative security	-	5,455 Added 35.51%	9,907 Common Stock
Dec 15 2020	SELL Payment of exercise price or tax liability	$59,419 $47.88 p/Share	1,241 Reduced 36.66%	2,144 Common Stock
Dec 15 2020	BUY Exercise of conversion of derivative security	-	3,385 Added 50.0%	3,385 Common Stock
Dec 15 2020	BUY Grant, award, or other acquisition	-	2,308 Added 34.14%	4,452 Common Stock
Dec 17 2012	SELL Payment of exercise price or tax liability	$595,641 $73.4 p/Share	8,115 Reduced 38.98%	12,702 Common Stock

DYG

David Y. Gan

CHIEF LEGAL OFFICER

Dallas, TX

Institutional Portfolio Updates

Receive a notification when an Institution or Guru buys or sells ACM shares.

Notify only if

Value

Insider Trading

Get notified when an Aecom insider buys or sells ACM shares.

Notify only if

Operation

Value

Type

News

Receive news related to AECOM

Track Activities on ACM

Account