Ambiq Micro, Inc. (AMBQ) Insider Trading
Over the last 3 months, AMBQ insiders made 0 open-market buys and 14 sales, a net sale of -$16.3M (SEC Form 4). Over the last 6 months, 80 institutions increased and 24 reduced their position (13F).
Insider Activity
Sentiment
0/100
Buys (3m)
0
Sells (3m)
14
Net (3m)
-$16.3M
Insider trades by month Buys Sells
Jan
Apr
May
Context3-month price +182.8%Institutions accumulating (13F)
| Date | Insider | Type | Shares | Price |
|---|---|---|---|---|
| Jun 4, 2026 | Winzeler Jeffrey Gofficer: Chief Financial Officer | Option | 5,952 | $16.80 |
| May 29, 2026 | Chen Timothydirector | Sell | 22,414 | $78.85 |
| May 29, 2026 | Chen Timothydirector | Sell | 3,264 | $81.57 |
| May 29, 2026 | Chen Timothydirector | Sell | 20,666 | $80.61 |
| May 29, 2026 | Chen Timothydirector | Sell | 24,248 | $79.72 |
| May 18, 2026 | Winzeler Jeffrey Gofficer: Chief Financial Officer | Option | 5,952 | $16.80 |
| May 18, 2026 | Winzeler Jeffrey Gofficer: Chief Financial Officer | Option | 26,000 | $16.80 |
| May 18, 2026 | Winzeler Jeffrey Gofficer: Chief Financial Officer | Sell | 25,918 | $69.90 |
| May 18, 2026 | Winzeler Jeffrey Gofficer: Chief Financial Officer | Sell | 82 | $70.65 |
| May 18, 2026 | Hanson Scott McLeandirector, officer: Chief Technology Officer | Option | 10,200 | $8.12 |
| May 18, 2026 | Hanson Scott McLeandirector, officer: Chief Technology Officer | Sell | 3,900 | $68.62 |
| May 18, 2026 | Hanson Scott McLeandirector, officer: Chief Technology Officer | Sell | 6,100 | $69.59 |
| May 18, 2026 | Hanson Scott McLeandirector, officer: Chief Technology Officer | Sell | 200 | $70.50 |
| May 18, 2026 | Hanson Scott McLeandirector, officer: Chief Technology Officer | Option | 8,100 | $8.12 |
| May 18, 2026 | Chen Sean Chihhsiangofficer: President and COO | Option | 55,685 | $5.88 |
| May 18, 2026 | Chen Sean Chihhsiangofficer: President and COO | Sell | 32,351 | $70.53 |
| May 18, 2026 | Chen Sean Chihhsiangofficer: President and COO | Sell | 23,334 | $71.37 |
| May 18, 2026 | Esaka Fumihidedirector, officer: Chief Executive Officer | Option | 60,000 | $8.12 |
| May 18, 2026 | Esaka Fumihidedirector, officer: Chief Executive Officer | Sell | 60,000 | $70.02 |
| May 18, 2026 | Esaka Fumihidedirector, officer: Chief Executive Officer | Option | 45,463 | $8.12 |
| May 18, 2026 | Esaka Fumihidedirector, officer: Chief Executive Officer | Option | 14,537 | $12.60 |
| May 18, 2026 | Esaka Fumihidedirector, officer: Chief Executive Officer | Option | 7,936 | $12.60 |
| May 18, 2026 | Esaka Fumihidedirector, officer: Chief Executive Officer | Option | 6,601 | $12.60 |
| Apr 6, 2026 | Connors Michele Kimofficer: General Counsel | Sell | 151 | $26.65 |
| Apr 6, 2026 | Connors Michele Kimofficer: General Counsel | Sell | 660 | $26.04 |
| Apr 2, 2026 | Winzeler Jeffrey Gofficer: Chief Financial Officer | Grant | 41,728 | — |
| Apr 2, 2026 | Chen Sean Chihhsiangofficer: President and COO | Grant | 64,246 | — |
| Mar 10, 2026 | Hanson Scott McLeandirector, officer: Chief Technology Officer | Grant | 80,308 | — |
| Mar 10, 2026 | Connors Michele Kimofficer: General Counsel | Grant | 32,123 | — |
| Mar 10, 2026 | Esaka Fumihidedirector, officer: Chief Executive Officer | Grant | 160,616 | — |
Source: AMBQ SEC Form 4 filings, latest Jun 4, 2026. For informational purposes only — not investment advice.
Institutional activity (13F)
How institutions changed their AMBQ positions over the last 6 months (SEC Form 13F).
Increased
80
New positions
48
Reduced
24
Sold out
26
Largest moves
| Institution | Action | Shares | Filed |
|---|---|---|---|
| T. ROWE PRICE INVESTMENT MANAGEMENT, INC. | New Position | 1.3M | May 15, 2026 |
| BLACKROCK, INC. | Increased | 1.0M | May 13, 2026 |
| ATREIDES MANAGEMENT, LP | Increased | 862K | May 18, 2026 |
| VANGUARD CAPITAL MANAGEMENT LLC | New Position | 707K | May 15, 2026 |
| ATREIDES MANAGEMENT, LP | Increased | 696K | Feb 17, 2026 |
| ALLIANCEBERNSTEIN L.P. | Increased | 686K | May 15, 2026 |
| SCHONFELD STRATEGIC ADVISORS LLC | Increased | 657K | May 15, 2026 |
| FRANKLIN RESOURCES INC | Increased | 542K | May 13, 2026 |
| GOLDMAN SACHS GROUP INC | Increased | 413K | May 15, 2026 |
| ALLIANCEBERNSTEIN L.P. | Reduced | 395K | Feb 17, 2026 |
| KADENSA CAPITAL LTD | Unchanged | 395K | Feb 17, 2026 |
| DRIEHAUS CAPITAL MANAGEMENT LLC | New Position | 381K | May 15, 2026 |
| VANGUARD GROUP INC | Increased | 328K | Jan 29, 2026 |
| BLACKROCK, INC. | Increased | 308K | Feb 12, 2026 |
| FRANKLIN RESOURCES INC | Increased | 308K | Feb 11, 2026 |
Source: SEC Form 13F filings. For informational purposes only — not investment advice.