Insiders who reported open-market trades in the last 12 months at the companies Kang Sun 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.
Kang Sun is a corporate insider, tracked as Director of Amprius Technologies, Inc. (AMPX). InsiderAlpha holds 14 primary Form 4 filings for them, the earliest from 2024, updated as new SEC EDGAR filings are processed.
How many SEC Form 4 filings has Kang Sun submitted recently?
1 primary Form 4 filing in the last 90 days, covering 1 company.
Has Kang Sun been buying or selling stock?
Recorded transactions: 0 open-market purchases and 15 open-market sales ($58.14M) across all tracked filings.
Kang Sun is Director of Amprius Technologies, Inc. (AMPX). 14 SEC Form 4 filings on record going back to 2024, most recently on 25 August 2026. Most recent open-market trade: sold $642K of AMPX on 25 August 2026. Lifetime open-market sales: $58.14M.
Recent transactions
20
The latest 20 SEC Form 4 transactions reported by Kang Sun.
InsiderAlpha's records for Kang Sun go back to 2024: 14 primary Form 4 filings, an average of 4.7 per year. No recorded transaction carries a Rule 10b5-1 plan flag. An absent flag does not establish whether a transaction was pre-arranged or discretionary.
