Gan David Y.
Officer · ACM
As of 2026-09-16, Gan David Y. has 18 Form 4 transactions on record across 1 company — 8 in the trailing 12 months.
Everything this person has disclosed to the SEC on Form 4 — across every company they file for — reconstructed from the public record. A filing history, not a tip sheet.
Pattern in the record: open-market sales filed in December in multiple years since 2024 — a recurring calendar cadence, more consistent with scheduled activity than a one-off decision.
Reconstructed holdings
- Direct $2.6M
- Indirect $0
| ACM | direct | 41,549 sh | $2.6M |
Reconstructed from this person's own Form 4 filings — the total each filing reported owning afterward, priced at the close on the as-of date shown. A filed position can lag the real one.
Direct and indirect holdings (e.g. through a trust or fund) are tagged separately, as filed.
Trades by company
Filing ledger
| Date | Company | Action | Shares @ price | Value | Ownership Δ | Owned after | Filing |
|---|---|---|---|---|---|---|---|
| 2025-12-17 | ACM | Sale | 9,502 @ $97.01 | $922K | −18.6% of holding | 41,549 | Form 4 |
| 2025-12-15 | ACM | Sale | 6,000 @ $98.85 | $593K | −10.5% of holding | 51,051 | Form 4 |
| 2024-12-18 | ACM | Sale | 3,036 @ $111.00 | $337K | −6.9% of holding | 41,015 | Form 4 |
| 2024-12-17 | ACM | Sale | 6,362 @ $110.19 | $701K | −12.6% of holding | 44,051 | Form 4 |
| 2024-12-16 | ACM | Sale | 7,549 @ $111.67 | $843K | −13.0% of holding | 50,413 | Form 4 |
| 2024-12-16 | ACM | Sale | 3,951 @ $111.05 | $439K | −6.4% of holding | 57,962 | Form 4 |
12 award / exercise / gift records — not counted as purchases
| Date | Company | Action | Shares | Owned after | Filing |
|---|---|---|---|---|---|
| 2025-12-15 | ACM | Withheld for tax | 10,530 | 57,051 | Form 4 |
| 2025-12-15 | ACM | Award / grant | 6,534 | 53,525 | Form 4 |
| 2025-12-15 | ACM | Award / grant | 14,056 | 67,581 | Form 4 |
| 2025-12-15 | ACM | Option exercise | 5,976 | 46,991 | Form 4 |
| 2025-12-15 | ACM | Option exercise | 5,976 | 0 | Form 4 |
| 2025-12-15 | ACM | Option exercise | 5,976 | 0 | Form 4 |
| 2024-12-15 | ACM | Withheld for tax | 10,494 | 61,913 | Form 4 |
| 2024-12-15 | ACM | Option exercise | 6,426 | 53,560 | Form 4 |
| 2024-12-15 | ACM | Award / grant | 13,466 | 72,407 | Form 4 |
| 2024-12-15 | ACM | Award / grant | 5,381 | 58,941 | Form 4 |
| 2024-12-15 | ACM | Option exercise | 6,426 | 0 | Form 4 |
| 2024-12-15 | ACM | Option exercise | 6,426 | 0 | Form 4 |
Source: SEC Form 4 filings. Each row links to its original filing.
Research tool, not investment advice — historical frequencies, not recommendations. A product of Marovel Technologies LLC. Full terms.