AMBQ
insider transactionsAmbiq Micro, Inc. — buys & sells by directors, officers and 10% owners A shareholder owning more than 10% of the company. Must report trades, but usually a weaker signal than an officer or director. (SEC Form 4).
Net shares · 90d
-223.3K
0 buy · 223.3K sell
Net value · 90d
-$16.3M
$0 in · $16.3M out
Sentiment · 90d
Net selling
0% buying · 100% selling
Open-market trades · 90d
14
0 buy · 223.3K sell
Net buy / sell volume
Not enough data to chart yet.
Tap or hover the chart for daily net volume. Green = net buying, red = net selling.
All transactions
-
Grant·A
Director
$0
5.0K sh
Own New
-
Grant·A
Director
$0
5.0K sh
Own New
-
Grant·A
Director
$0
5.0K sh
Own +10%
-
Grant·A
Director
$0
5.0K sh
Own +10%
-
Grant·A
Director
$0
5.0K sh
Own +21%
-
Exercise·M
Chief Financial Officer
$0
6.0K sh
Own +6%
-
Exercise·M
Chief Financial Officer
$100.0K
6.0K sh · $16.80
Own +6%
-
Sell·S
Director
$266.2K
3.3K sh · $81.57
Own -100%
-
Sell·S
Director
$1.7M
20.7K sh · $80.61
Own -86%
-
Sell·S
Director
$1.9M
24.2K sh · $79.72
Own -50%
-
Sell·S
Director
$1.8M
22.4K sh · $78.85
Own -32%
-
Exercise·M
President and COO
$0
55.7K sh
Own New
-
Sell·S
President and COO
$1.7M
23.3K sh · $71.37
Own -16%
-
Sell·S
President and COO
$2.3M
32.4K sh · $70.53
Own -18%
-
Exercise·M
President and COO
$327.4K
55.7K sh · $5.88
Own +46%
-
Exercise·M
Fumihide Esaka KEY
Chief Executive Officer
$0
6.6K sh
Own +4%
-
Exercise·M
Fumihide Esaka KEY
Chief Executive Officer
$0
7.9K sh
Own +7%
-
Exercise·M
Fumihide Esaka KEY
Chief Executive Officer
$0
45.5K sh
Own +85%
-
Exercise·M
Fumihide Esaka KEY
Chief Executive Officer
$183.2K
14.5K sh · $12.60
Own +3%
-
Exercise·M
Fumihide Esaka KEY
Chief Executive Officer
$369.2K
45.5K sh · $8.12
Own +12%
-
Exercise·M
Chief Technology Officer
$0
8.1K sh
Own +13%
-
Exercise·M
Chief Technology Officer
$65.8K
8.1K sh · $8.12
Own +4%
-
Exercise·M
Chief Financial Officer
$0
6.0K sh
Own +6%
-
Exercise·M
Chief Financial Officer
$100.0K
6.0K sh · $16.80
Own +6%
-
Exercise·M
Fumihide Esaka KEY
Chief Executive Officer
$0
60.0K sh
Own +71%
-
Sell·S
Fumihide Esaka KEY
Chief Executive Officer
$4.2M
60.0K sh · $70.02
Own -13%
-
Exercise·M
Fumihide Esaka KEY
Chief Executive Officer
$487.2K
60.0K sh · $8.12
Own +15%
-
Exercise·M
Chief Technology Officer
$0
10.2K sh
Own +15%
-
Sell·S
Chief Technology Officer
$14.1K
200 sh · $70.50
Own -0%
-
Sell·S
Chief Technology Officer
$424.5K
6.1K sh · $69.59
Own -3%
-
Sell·S
Chief Technology Officer
$267.6K
3.9K sh · $68.62
Own -2%
-
Exercise·M
Chief Technology Officer
$82.8K
10.2K sh · $8.12
Own +5%
-
Exercise·M
Chief Financial Officer
$0
26.0K sh
Own +29%
-
Sell·S
Chief Financial Officer
$5.8K
82 sh · $70.65
Own -0%
-
Sell·S
Chief Financial Officer
$1.8M
25.9K sh · $69.90
Own -22%
-
Exercise·M
Chief Financial Officer
$436.8K
26.0K sh · $16.80
Own +28%
-
Sell·S
General Counsel
$4.0K
151 sh · $26.65
Own -0%
-
Sell·S
General Counsel
$17.2K
660 sh · $26.04
Own -1%
| Date▾ | Insider | Type | Shares | Value |
|---|---|---|---|---|
| Jun 8, 2026 | Bernard Bennett Banks | Grant A | 5.0K | $0 |
| Jun 8, 2026 | Wen Hsuan Hsieh | Grant A | 5.0K | $0 |
| Jun 8, 2026 | Timothy Chen | Grant A | 5.0K | $0 |
| Jun 8, 2026 | Joseph A Tautges | Grant A | 5.0K | $0 |
| Jun 8, 2026 | Ker Zhang | Grant A | 5.0K | $0 |
| Jun 2, 2026 | Jeffrey G Winzeler KEY | Exercise M | 6.0K | $0 |
| Jun 2, 2026 | Jeffrey G Winzeler KEY | Exercise M | 6.0K | $100.0K |
| May 27, 2026 | Timothy Chen | Sell S | 3.3K | $266.2K |
| May 27, 2026 | Timothy Chen | Sell S | 20.7K | $1.7M |
| May 27, 2026 | Timothy Chen | Sell S | 24.2K | $1.9M |
| May 27, 2026 | Timothy Chen | Sell S | 22.4K | $1.8M |
| May 15, 2026 | Sean Chihhsiang Chen KEY | Exercise M | 55.7K | $0 |
| May 15, 2026 | Sean Chihhsiang Chen KEY | Sell S | 23.3K | $1.7M |
| May 15, 2026 | Sean Chihhsiang Chen KEY | Sell S | 32.4K | $2.3M |
| May 15, 2026 | Sean Chihhsiang Chen KEY | Exercise M | 55.7K | $327.4K |
| May 15, 2026 | Fumihide Esaka KEY | Exercise M | 6.6K | $0 |
| May 15, 2026 | Fumihide Esaka KEY | Exercise M | 7.9K | $0 |
| May 15, 2026 | Fumihide Esaka KEY | Exercise M | 45.5K | $0 |
| May 15, 2026 | Fumihide Esaka KEY | Exercise M | 14.5K | $183.2K |
| May 15, 2026 | Fumihide Esaka KEY | Exercise M | 45.5K | $369.2K |
| May 15, 2026 | Scott Mclean Hanson | Exercise M | 8.1K | $0 |
| May 15, 2026 | Scott Mclean Hanson | Exercise M | 8.1K | $65.8K |
| May 15, 2026 | Jeffrey G Winzeler KEY | Exercise M | 6.0K | $0 |
| May 15, 2026 | Jeffrey G Winzeler KEY | Exercise M | 6.0K | $100.0K |
| May 14, 2026 | Fumihide Esaka KEY | Exercise M | 60.0K | $0 |
| May 14, 2026 | Fumihide Esaka KEY | Sell S | 60.0K | $4.2M |
| May 14, 2026 | Fumihide Esaka KEY | Exercise M | 60.0K | $487.2K |
| May 14, 2026 | Scott Mclean Hanson | Exercise M | 10.2K | $0 |
| May 14, 2026 | Scott Mclean Hanson | Sell S | 200 | $14.1K |
| May 14, 2026 | Scott Mclean Hanson | Sell S | 6.1K | $424.5K |
| May 14, 2026 | Scott Mclean Hanson | Sell S | 3.9K | $267.6K |
| May 14, 2026 | Scott Mclean Hanson | Exercise M | 10.2K | $82.8K |
| May 14, 2026 | Jeffrey G Winzeler KEY | Exercise M | 26.0K | $0 |
| May 14, 2026 | Jeffrey G Winzeler KEY | Sell S | 82 | $5.8K |
| May 14, 2026 | Jeffrey G Winzeler KEY | Sell S | 25.9K | $1.8M |
| May 14, 2026 | Jeffrey G Winzeler KEY | Exercise M | 26.0K | $436.8K |
| Apr 2, 2026 | Michele Kim Connors | Sell S | 151 | $4.0K |
| Apr 2, 2026 | Michele Kim Connors | Sell S | 660 | $17.2K |
About AMBQ insider trading
This page tracks insider transactions for Ambiq Micro, Inc. (AMBQ) reported to the U.S. Securities and Exchange Commission on Form 4. Corporate insiders — directors, executive officers and beneficial owners of more than 10% of the stock — must disclose their trades within two business days. Open-market purchases (code P) and sales (code S) made at the insider's discretion are the most-watched opportunistic signals, while awards (A), option exercises (M) and tax-withholding (F) reflect compensation rather than conviction. Trades marked 10b5-1 were made under a pre-arranged plan and are considered routine. A cluster buy — several insiders buying within a short window — is historically a stronger bullish indicator than any single trade.