Company · CIK 0001500412 · SIC 3674 — Semiconductors & Related Devices · NYSE
Ambiq Micro, Inc. · AMBQ
Insider activity reported against this company. All insider holders · On EDGAR ↗
Reported at this company — common stock
| Trade | Reported (ET) | Insider | Shares | Avg price | Total | Owned after | Δ stake | Flags |
|---|---|---|---|---|---|---|---|---|
| Sep 15, 2026 SForm 4 → | Sep 17, 4:06 pm EDT | Scott McLean HansonChief Technology Officer, Director | 7,000 | $60.28 | $421,942 | 221,226 | −3.07% | 10b5-1 |
| Sep 15, 2026 MForm 4 → | Sep 17, 4:06 pm EDT | Scott McLean HansonChief Technology Officer, Director | 7,000 | $8.12 | $56,840 | 228,226 | — | 10b5-1 |
| Sep 14, 2026 SForm 4 → | Sep 15, 6:57 pm EDT | Sean Chihhsiang ChenPresident and COO | 15,000 | $60.14 | $902,130 | 120,275 | −11.1% | 10b5-1 |
| Sep 14, 2026 MForm 4 → | Sep 15, 6:57 pm EDT | Sean Chihhsiang ChenPresident and COO | 15,000 | $8.12 | $121,800 | 135,275 | — | 10b5-1 |
| Sep 11, 2026 SForm 4 → | Sep 15, 6:58 pm EDT | Ker ZhangDirector | 10,000 | $63.44 | $634,361 | 20,366 | −32.9% | |
| Sep 11, 2026 SForm 4 → | Sep 15, 6:56 pm EDT | Fumihide EsakaChief Executive Officer, Director | 63,500 | $62.70 | $3,981,709 | 460,460 | −12.1% | 10b5-1 |
| Sep 11, 2026 MForm 4 → | Sep 15, 6:56 pm EDT | Fumihide EsakaChief Executive Officer, Director | 63,500 | $11.65 | $739,620 | 473,960 | — | 10b5-1 |
| Sep 4, 2026 SForm 4 → | Sep 9, 5:10 pm EDT | Sean Chihhsiang ChenPresident and COO | 15,000 | $57.17 | $857,558 | 120,275 | −11.1% | 10b5-1 |
| Sep 4, 2026 MForm 4 → | Sep 9, 5:10 pm EDT | Sean Chihhsiang ChenPresident and COO | 15,000 | $8.12 | $121,800 | 135,275 | — | 10b5-1 |
| Sep 4, 2026 SForm 4 → | Sep 9, 5:08 pm EDT | Ker ZhangDirector | 185 | $56.92 | $10,530 | 30,366 | −0.61% | |
| Sep 4, 2026 MForm 4 → | Sep 9, 5:08 pm EDT | Ker ZhangDirector | 1,785 | $5.88 | $10,496 | 30,551 | — | |
| Aug 31, 2026 SForm 4 → | Sep 2, 4:47 pm EDT | Fumihide EsakaChief Executive Officer, Director | 108,500 | $56.89 | $6,172,546 | 460,460 | −19.1% | 10b5-1 |
| Aug 31, 2026 MForm 4 → | Sep 2, 4:47 pm EDT | Fumihide EsakaChief Executive Officer, Director | 117,771 | $12.09 | $1,423,435 | 471,487 | — | 10b5-1 |
| Aug 26, 2026 SForm 4 → | Aug 28, 5:19 pm EDT | Scott McLean HansonChief Technology Officer, Director | 55,000 | $59.69 | $3,283,079 | 221,226 | −19.9% | |
| Aug 26, 2026 MForm 4 → | Aug 28, 5:19 pm EDT | Scott McLean HansonChief Technology Officer, Director | 65,000 | $8.12 | $527,800 | 248,726 | — | |
| Aug 14, 2026 SForm 4 → | Aug 18, 4:40 pm EDT | Scott McLean HansonChief Technology Officer, Director | 7,000 | $64.38 | $450,639 | 211,226 | −3.21% | 10b5-1 |
| Aug 14, 2026 MForm 4 → | Aug 18, 4:40 pm EDT | Scott McLean HansonChief Technology Officer, Director | 7,000 | $8.12 | $56,840 | 218,226 | — | 10b5-1 |
| Aug 14, 2026 SForm 4 → | Aug 18, 4:30 pm EDT | Fumihide EsakaChief Executive Officer, Director | 13,500 | $64.39 | $869,226 | 451,189 | −2.91% | 10b5-1 |
| Aug 14, 2026 MForm 4 → | Aug 18, 4:30 pm EDT | Fumihide EsakaChief Executive Officer, Director | 13,500 | $8.12 | $109,620 | 464,689 | — | 10b5-1 |
| Jun 8, 2026 AForm 4 → | Jun 10, 5:01 pm EDT | Wen Hsuan HsiehDirector | 4,957 | — | — | 4,957 | — | |
| Jun 8, 2026 AForm 4 → | Jun 10, 4:46 pm EDT | Timothy ChenDirector | 4,957 | — | — | 52,575 | — | |
| Jun 8, 2026 AForm 4 → | Jun 10, 4:45 pm EDT | Bernard Bennett BanksDirector | 4,957 | — | — | 4,957 | — | |
| Jun 8, 2026 AForm 4 → | Jun 10, 4:43 pm EDT | Joseph A TautgesDirector | 4,957 | — | — | 53,703 | — | |
| Jun 8, 2026 AForm 4 → | Jun 10, 4:42 pm EDT | Ker ZhangDirector | 4,957 | — | — | 28,766 | — | |
| Jun 2, 2026 MForm 4 → | Jun 4, 5:01 pm EDT | Jeffrey G WinzelerChief Financial Officer | 5,952 | $16.80 | $99,994 | 106,299 | — |
Reported at this company — derivatives (options, RSUs, warrants)
| Trade | Reported (ET) | Insider | Shares | Avg price | Total | Owned after | Δ stake | Flags |
|---|---|---|---|---|---|---|---|---|
| Sep 15, 2026 MForm 4 → | Sep 17, 4:06 pm EDT | Scott McLean HansonChief Technology Officer, Director | 7,000 | — | — | 45,279 | — | 10b5-1 |
| Sep 14, 2026 MForm 4 → | Sep 15, 6:57 pm EDT | Sean Chihhsiang ChenPresident and COO | 15,000 | — | — | 134,423 | — | 10b5-1 |
| Sep 11, 2026 MForm 4 → | Sep 15, 6:56 pm EDT | Fumihide EsakaChief Executive Officer, Director | 63,500 | — | — | 58,507 | — | 10b5-1 |
| Sep 4, 2026 MForm 4 → | Sep 9, 5:10 pm EDT | Sean Chihhsiang ChenPresident and COO | 15,000 | — | — | 149,423 | — | 10b5-1 |
| Sep 4, 2026 MForm 4 → | Sep 9, 5:08 pm EDT | Ker ZhangDirector | 1,785 | — | — | 0 | — | |
| Aug 31, 2026 MForm 4 → | Sep 2, 4:47 pm EDT | Fumihide EsakaChief Executive Officer, Director | 117,771 | — | — | 19,007 | — | 10b5-1 |
| Aug 26, 2026 MForm 4 → | Aug 28, 5:19 pm EDT | Scott McLean HansonChief Technology Officer, Director | 65,000 | — | — | 83,558 | — | |
| Aug 14, 2026 MForm 4 → | Aug 18, 4:40 pm EDT | Scott McLean HansonChief Technology Officer, Director | 7,000 | — | — | 62,279 | — | 10b5-1 |
| Aug 14, 2026 MForm 4 → | Aug 18, 4:30 pm EDT | Fumihide EsakaChief Executive Officer, Director | 13,500 | — | — | 85,507 | — | 10b5-1 |
| Jun 2, 2026 MForm 4 → | Jun 4, 5:01 pm EDT | Jeffrey G WinzelerChief Financial Officer | 5,952 | — | — | 104,953 | — |