Fumihide Esaka
Director, Chief Executive Officer · 9 filings · Latest: Oct 15, 2026
Ambiq Micro, Inc.
| Ticker | Owner | Relationship | Date | Transaction | Cost | #Shares | Value ($) | #Shares Total | SEC Filing |
|---|---|---|---|---|---|---|---|---|---|
AMBQ | Fumihide Esaka | Director, Chief Executive Officer | Oct 15, 2026 | Sale | $51.00 | 5,000 | $255.0K | 443,900 | |
AMBQ | Fumihide Esaka | Director, Chief Executive Officer | Oct 15, 2026 | Option Exercise | $8.12 | 5,000 | $40.6K | 448,900 | |
AMBQ | Fumihide Esaka | Director, Chief Executive Officer | Oct 2, 2026 | Sale | $69.60 | 16,560 | $1.2M | 443,900 | |
AMBQ | Fumihide Esaka | — | Oct 2, 2026 | Proposed Sale | $69.15 | 16,560 | $1.1M | — | |
AMBQ | Fumihide Esaka | Director, Chief Executive Officer | Sep 15, 2026 | Sale | $60.28 | 13,500 | $813.7K | 460,460 | |
AMBQ | Fumihide Esaka | Director, Chief Executive Officer | Sep 15, 2026 | Option Exercise | $8.12 | 13,500 | $109.6K | 473,960 | |
AMBQ | Fumihide Esaka | Director, Chief Executive Officer | Sep 11, 2026 | Sale | $63.36 | 50,000 | $3.2M | 460,460 | |
AMBQ | Fumihide Esaka | Director, Chief Executive Officer | Sep 11, 2026 | Option Exercise | $12.60 | 50,000 | $630.0K | 510,460 | |
AMBQ | FUMIHIDE ESAKA | — | Sep 11, 2026 | Proposed Sale | $63.36 | 50,000 | $3.2M | — | |
AMBQ | Fumihide Esaka | Director, Chief Executive Officer | Sep 2, 2026 | Sale | $56.69 | 11,027 | $625.1K | 460,460 | |
AMBQ | Fumihide Esaka | Director, Chief Executive Officer | Sep 2, 2026 | Option Exercise | $12.60 | 11,027 | $138.9K | 471,487 | |
AMBQ | Fumihide Esaka | Director, Chief Executive Officer | Sep 1, 2026 | Sale | $56.39 | 48,973 | $2.8M | 460,460 | |
AMBQ | Fumihide Esaka | Director, Chief Executive Officer | Sep 1, 2026 | Option Exercise | $12.60 | 48,973 | $617.1K | 509,433 | |
AMBQ | Fumihide Esaka | Director, Chief Executive Officer | Aug 31, 2026 | Sale | $57.44 | 48,500 | $2.8M | 460,460 | |
AMBQ | Fumihide Esaka | Director, Chief Executive Officer | Aug 31, 2026 | Option Exercise | $11.55 | 57,771 | $667.4K | 495,460 | |
AMBQ | FUMIHIDE (HUMI) ESAKA | — | Sep 2, 2026 | Proposed Sale | $56.69 | 11,027 | $625.1K | — | |
AMBQ | FUMIHIDE (HUMI) ESAKA | — | Sep 1, 2026 | Proposed Sale | $56.39 | 48,973 | $2.8M | — | |
AMBQ | FUMIHIDE (HUMI) ESAKA | — | Aug 31, 2026 | Proposed Sale | $57.42 | 35,000 | $2.0M | — | |
AMBQ | Fumihide Esaka | Director, Chief Executive Officer | Aug 14, 2026 | Sale | $64.39 | 13,500 | $869.2K | 451,189 | |
AMBQ | Fumihide Esaka | Director, Chief Executive Officer | Aug 14, 2026 | Option Exercise | $8.12 | 13,500 | $109.6K | 464,689 |
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