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David Y. Gan

CIK 1805823 · CHIEF LEGAL OFFICER · last filed 2025-12-17

David Y. Gan is a CHIEF LEGAL OFFICER who has filed 11 SEC Form 4 insider transactions across 1 company since 2020. The most recent filing, for ACM, was dated Dec 17, 2025. Across all open-market trades the lifetime net is −$3.8M, making them a net seller over the disclosed history. Current disclosed insider exposure totals $3.5M across reported positions. 12 SEC filings were submitted jointly with AECOM.

"Disclosed insider exposure" sums this person's most-recently-reported share counts across each company they're an insider in, multiplied by the current underlying price. It is not net worth — it misses retail holdings, private investments, real estate, index funds, and any company where the person isn't an SEC-reporting insider. For informational purposes only.

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Disclosed Exposure

$3.51M

Companies

1

Total Filings

11

Lifetime Open-Market Net

-$3.83M

Filer Profile

Reported Address
C/O AECOM, 1999 AVENUE OF THE STARS
SUITE 2600
LOS ANGELES, CA 90067
Phone
(213) 593-8038
Related Filers
AECOM — 12 joint filings, latest 2025-12-17
Profile details as reported on the filer's SEC submissions — for individual insiders the address is often in care of the issuer. Related filers are identified from jointly filed SEC submissions and shared reported addresses. View filings on SEC EDGAR.

Holdings By Company

Latest on-record share count from this person's most recent non-derivative Form 4 transaction in each company. Disclosed exposure = shares × current underlying price.
Symbol Role Shares Price Disclosed Exposure Lifetime OM Net Filings Latest Filed
ACM CHIEF LEGAL OFFICER 57,627 $60.89 $3.51M -$3.83M 7 2025-12-17

Recent Filings

11 filings
Insider activity across all companies, newest first. Form 4 rows are post-trade confirmations (buys, sells, grants, exercises). Notice (144) rows are pre-trade notices of intent to sell restricted or control stock under Rule 144 — they may not all execute. Compare adjacent dates to see which notices became actual sales.
Filed Symbol Action Net Shares Net $ Link
2025-12-17 ACM Mixed +534 -$2.55M EDGAR
2025-12-17 ACM Notice (144) −9,502 -$921.8K EDGAR
2025-12-15 ACM Notice (144) −6,000 -$593.1K EDGAR
2024-12-18 ACM Mixed −6,119 -$3.49M EDGAR
2024-12-17 ACM Notice (144) −9,398 -$1.04M EDGAR
2024-12-16 ACM Notice (144) −11,500 -$1.28M EDGAR
2023-12-18 ACM Mixed +21,856 -$1.56M EDGAR
2022-12-19 ACM Mixed +12,576 -$1.11M EDGAR
2021-12-21 ACM Mixed +8,250 -$595.6K EDGAR
2021-12-17 ACM Grant (A) — $0 EDGAR
Showing 1–10 of 11
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Form 4 codes: P = open-market purchase · S = open-market sale · A = grant/award · M = option exercise · F = tax withholding at vest · G = bona-fide gift · D = disposition to issuer · J = other (see filing footnote). Only P / S codes carry directional signal.
Notice (144 / 144/A): Form 144 is a notice of intent to sell restricted/control stock under Rule 144, filed before the sale; 144/A is an amendment. Many notices are pre-scheduled under Rule 10b5-1 plans. A Form 4 with code S typically follows within a few days when the planned sale executes; missing follow-up Form 4s suggest the notice was cancelled or modified.