Joseph A Tautges insider trades: Ambiq Micro (AMBQ) stock buys and sales
Trades on the price chart
Daily close, with an arrow on each day they bought or sold
Companies
Where Joseph reports to the SEC
Open-market buys and sales
2 trades reported on SEC Form 4, newest first
| Date | Stock | Type | Shares | Price | Value | Holding | Reported |
|---|---|---|---|---|---|---|---|
| Jan 26, 2026 | AMBQ | ↓ Sell | 7,800 | $31.00 | $242K | Direct | Jan 28, 2026 (2d) |
| Nov 9, 2018 | CDK | ↑ Buy | 7,900 | $50.68 | $400K | Direct | Nov 13, 2018 (4d) |
Each row is one filing's trades in one stock, summed. Shares and prices are as filed, before any later stock split.
Other AMBQ insiders
Open-market trades in the last 12 months
About Joseph A Tautges's insider trades
Joseph A Tautges is an insider at Ambiq Micro (AMBQ). Since Nov 9, 2018, Joseph has reported 1 open-market purchase worth $400K and 1 sale worth $242K on SEC Form 4. In the last 12 months: 1 sale ($242K).
Their filings also include shares withheld for taxes (12 filings), grants and awards (10 filings), shares returned to the company (2 filings). These aren't open-market trades and aren't counted above.
How to read insider trades
Officers, directors and owners of more than 10% of a company must report trades in its stock on SEC Form 4, usually within two business days. Purchases with their own money are the stronger signal: insiders sell for many reasons (taxes, diversification, a house), but buy for one. See every AMBQ insider trade, the latest insider trades across the market, or cluster buys, when several insiders buy the same stock within days.