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Sean Chihhsiang Chen, President and COO at Ambiq Micro, sold AMBQ on Oct 5, 2026

Data as of Oct 16

▼ SELL$366K5,508 shares at $66.38Sean Chihhsiang Chen President and COOAMBQ Ambiq Micro, Inc.
Watch AMBQ
Traded
Oct 5, 2026
Disclosed
Oct 6, 2026
Filed
1 day after the trade

Form 4s are due within two business days.

Official filing (SEC Form 4) ↗

The price around the disclosure

Sean Chihhsiang Chen, President and COO at Ambiq Micro, sold AMBQ on Oct 5, 2026TRADEDDISCLOSED
AMBQSimilar stocks (XLK — its sector index fund), rebased to AMBQ's price on the disclosure day
AMBQ since disclosure
−21.1%
after the sale
Similar stocks (XLK) since disclosure
−9.2%
XLK — its sector index fund

Change in closing price from Oct 6, 2026 (the first trading day on or after disclosure) to Oct 16, 2026. Dividends excluded. Not a return anyone earned.

Our take

None of our tested rules fired on this trade.

Other trades in the same filing

  1. ▼ SELLSean Chihhsiang Chen President and COOAMBQ Ambiq Micro, Inc.$121Kdisclosed Oct 6 · filed 1 day after the trade
  2. ▼ SELLSean Chihhsiang Chen President and COOAMBQ Ambiq Micro, Inc.$54.5Kdisclosed Oct 6 · filed 1 day after the trade
  3. ▼ SELLSean Chihhsiang Chen President and COOAMBQ Ambiq Micro, Inc.$7Kdisclosed Oct 6 · filed 1 day after the trade
  4. ▼ SELLSean Chihhsiang Chen President and COOAMBQ Ambiq Micro, Inc.$210Kdisclosed Oct 6 · filed 4 days after the trade
  5. ▼ SELLSean Chihhsiang Chen President and COOAMBQ Ambiq Micro, Inc.$21.7Kdisclosed Oct 6 · filed 4 days after the trade
  6. ▼ SELLSean Chihhsiang Chen President and COOAMBQ Ambiq Micro, Inc.$172Kdisclosed Oct 6 · filed 4 days after the trade

See every trade on AMBQ →