Insiders who reported open-market trades in the last 12 months at the companies Fumihide Esaka files at. Multiple unrelated insiders buying the same stock within a short window, cluster buying, has historically been one of the strongest Form 4 signals.
Fumihide Esaka is a corporate insider, tracked as Chief Executive Officer, Director of Ambiq Micro, Inc. (AMBQ). InsiderAlpha holds 10 primary Form 4 filings for them, the earliest from 2025, updated as new SEC EDGAR filings are processed.
How many SEC Form 4 filings has Fumihide Esaka submitted recently?
5 primary Form 4 filings in the last 90 days, covering 1 company.
Has Fumihide Esaka been buying or selling stock?
Recorded transactions: 0 open-market purchases and 25 open-market sales ($16.63M) across all tracked filings.
Fumihide Esaka is Chief Executive Officer, Director of Ambiq Micro, Inc. (AMBQ). 10 SEC Form 4 filings on record going back to 2025, most recently on 16 October 2026. Most recent open-market trade: sold $62K of AMBQ on 16 October 2026. Lifetime open-market sales: $16.63M.
Recent transactions
20
The latest 20 SEC Form 4 transactions reported by Fumihide Esaka.
InsiderAlpha's records for Fumihide Esaka go back to 2025: 10 primary Form 4 filings, an average of 5.0 per year. 39 recorded transactions carry a Rule 10b5-1 plan flag. This identifies the marked transactions as reported under a trading plan; it does not establish the plan status of unmarked transactions.
