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Insider selling
Sean Chihhsiang Chen sold $858K of Ambiq Micro, Inc. (AMBQ) stock
Sean Chihhsiang Chen, President and COO of Ambiq Micro, Inc. (AMBQ), sold 15,000 shares of AMBQ stock worth $858K, per an SEC Form 4 filed Sep 9, 2026.
The sale was pre-arranged (a 10b5-1 plan or an option exercise), not a fresh decision.
The trade happened on Sep 4, 2026, 5 days before it was made public.
AMBQ has moved +23.7% since the trade date, from $57.45 to $71.09 (Sep 21, 2026 close).
- Traded
- Sep 4, 2026
- Disclosed
- Sep 9, 2026
- Filing delay
- 5 days
- Price since
- +23.7%
- Role
- President and COO
- Source
- SEC Form 4
More AMBQ insider and Congress trades
From a public SEC Form 4, linked above. Not investment advice, and not a recommendation to buy or sell.