David Y. Gan
CIK 1805823 · View on SEC EDGAR ↗
Insider
First SEC filing: Dec. 17, 2020 · Latest: Dec. 17, 2020
On this page
Insider at
Insider transactions
0 buys (P)
0 sells (S)
Net:
$0
+ 20 non-open-market transactions below
last 12 months, based on the transactions shown below
Price change vs current quote, split-adjusted for corporate actions since the filing — not benchmarked, not annualized, not size-weighted
No open-market trades on record; showing all filings.
| Date | Ticker | Code | Shares | Price | Value | Owned after | Δ own | A/D | vs now |
|---|---|---|---|---|---|---|---|---|---|
| Dec. 15, 2023 | ACM | M | 9,190 | — | — | 34,468 Direct | +36.36% | Acquired | (price as of 2026-08-21) |
| Dec. 15, 2023 | ACM | A | 6,069 | — | — | 40,537 Direct | +17.61% | Acquired | (price as of 2026-08-21) |
| Dec. 15, 2023 | ACM | A | 23,463 | — | — | 64,000 Direct | +57.88% | Acquired | (price as of 2026-08-21) |
| Dec. 15, 2023 | ACM | F | 16,866 | $92.28 | $1,556,394 | 47,134 Direct | -26.35% | Disposed | -29.6% (price as of 2026-08-21) |
| Dec. 15, 2023 | ACM | M | 9,190 | — | — | 0 Direct | -100.00% | Disposed | (price as of 2026-08-21) |
| Dec. 16, 2022 | ACM | M | 6,503 | — | — | 19,205 Direct | +51.20% | Acquired | (price as of 2026-08-21) |
| Dec. 16, 2022 | ACM | A | 19,508 | — | — | 38,713 Direct | +101.58% | Acquired | (price as of 2026-08-21) |
| Dec. 16, 2022 | ACM | F | 13,435 | $82.77 | $1,112,015 | 25,278 Direct | -34.70% | Disposed | -21.5% (price as of 2026-08-21) |
| Dec. 16, 2022 | ACM | M | 6,503 | — | — | 0 Direct | -100.00% | Disposed | (price as of 2026-08-21) |
| Dec. 15, 2022 | ACM | A | 5,976 | — | — | 5,976 Direct | — | Acquired | (price as of 2026-08-21) |
| Dec. 17, 2021 | ACM | A | 10,910 | — | — | 20,817 Direct | +110.12% | Acquired | (price as of 2026-08-21) |
| Dec. 17, 2021 | ACM | M | 5,455 | — | — | 0 Direct | -100.00% | Disposed | (price as of 2026-08-21) |
| Dec. 17, 2021 | ACM | M | 5,455 | — | — | 9,907 Direct | +122.53% | Acquired | (price as of 2026-08-21) |
| Dec. 15, 2021 | ACM | A | 6,426 | — | — | 6,426 Direct | — | Acquired | (price as of 2026-08-21) |
| Dec. 15, 2020 | ACM | A | 9,190 | — | — | 9,190 Direct | — | Acquired | (price as of 2026-08-21) |
| Dec. 15, 2020 | ACM | M | 3,385 | — | — | 0 Direct | -100.00% | Disposed | (price as of 2026-08-21) |
| Dec. 15, 2020 | ACM | A | 2,308 | — | — | 4,452 Direct | +107.65% | Acquired | (price as of 2026-08-21) |
| Dec. 15, 2020 | ACM | F | 1,241 | $47.88 | $59,419 | 2,144 Direct | -36.66% | Disposed | 35.7% (price as of 2026-08-21) |
| Dec. 15, 2020 | ACM | M | 3,385 | — | — | 3,385 Direct | — | Acquired | (price as of 2026-08-21) |
| Dec. 17, 2012 | ACM | F | 8,115 | $73.40 | $595,641 | 12,702 Direct | -38.98% | Disposed | -11.5% (price as of 2026-08-21) |
P = Open-market purchase · S = Sale · A = Grant/award · M = Option exercise · G = Gift · F = Tax withholding
Insider transactions are not a recommendation; sales are often driven by liquidity or tax reasons.
Derivative holdings (Form 4 Table II)
Options, RSUs and convertible securities reported on Form 4 Table II.
| Date | Ticker | Security | Underlying | Exercise price | Expiration | Shares | A/D |
|---|---|---|---|---|---|---|---|
| Dec. 15, 2023 | ACM | Restricted Stock Units | Common Stock (9,190) | — | — | 9,190 | Disposed |
| Dec. 16, 2022 | ACM | Restricted Stock Units | Common Stock (6,503) | — | — | 6,503 | Disposed |
| Dec. 15, 2022 | ACM | Restricted Stock Units | Common Stock (5,976) | — | — | 5,976 | Acquired |
| Dec. 17, 2021 | ACM | Restricted Stock Units | Common Stock (5,455) | — | — | 5,455 | Disposed |
| Dec. 15, 2021 | ACM | Restricted Stock Units | Common Stock (6,426) | — | — | 6,426 | Acquired |
| Dec. 15, 2020 | ACM | Restricted Stock Units | Common Stock (9,190) | — | — | 9,190 | Acquired |
| Dec. 15, 2020 | ACM | Restricted Stock Units | Common Stock (3,385) | — | — | 3,385 | Disposed |
Exercise/conversion price is blank when not applicable (e.g. RSUs).