| Insider | Role | Shares | Value | Buys | Sells |
|---|---|---|---|---|---|
| Date | Ticker | Insider | Role | Type | Shares | Price | Value | Chg% | SEC |
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| Insider | Role | Shares | Value | Buys | Sells |
|---|---|---|---|---|---|
| Date | Ticker | Insider | Role | Type | Shares | Price | Value | Chg% | SEC |
|---|---|---|---|---|---|---|---|---|---|
Chief Financial Officer
2 companies
Jeffrey G Winzeler is Chief Financial Officer at AMBQ and has filed Form 4s across 2 companies. Jeffrey G Winzeler's net worth is not public. Form 4 filings only show shares in the companies where this person is an insider; those holdings are worth an estimated $4.7M at current prices.
The biggest single holding is AMBQ (~$4.5M) as Chief Financial Officer. The AMBQ filings lean toward selling, a net 31,455 shares.
Jeffrey G Winzeler has 9 Form 4 filings on record from December 2016 to October 2026, across 2 companies: Chief Financial Officer at Ambiq Micro (AMBQ), 2025–2026; Chief Financial Officer at Everspin Technologies (MRAM), 2016–2019.
The 17 reported transactions were 6 open-market sales, 4 stock awards, 3 option exercises and 3 option or other derivative awards, plus smaller numbers of other types.
Counted by filing, the open-market trades come to no purchases and 3 sales worth about $2.2M.
The largest open-market sale was 26,000 shares of AMBQ at an average $69.90 on May 14, 2026, about $1.8M.
Neither of the two sales since April 2023 was marked as made under a Rule 10b5-1 trading plan.
| Date | Ticker | Role | Type | Shares | Price | Value | Chg% | 3M | 12M | SEC |
|---|---|---|---|---|---|---|---|---|---|---|
| Oct 2, 2026 | AMBQ Ambiq Micro, Inc. | Chief Financial Officer | Sell | 5,455 | $69.60 | $379,644.54 | -5.1% | - | - | |
| May 14, 2026 | AMBQ Ambiq Micro, Inc. | Chief Financial Officer | Sale+OE | 26,000 | $69.90 | $1,817,412.26 | -21.6% | - | - | |
| Mar 13, 2019 | MRAM Everspin Technologies Inc. | Chief Financial Officer | Sell | 819 | $8.45 | $6,920.55 | -5.1% | - | - |