Home

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 $3.9M across reported positions.

"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.

Loading insider history…
Disclosed Exposure

$3.86M

Companies

1

Total Filings

11

Lifetime Open-Market Net

-$3.83M

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 $67.05 $3.86M -$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
Page 1 of 2
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.