Summary
Updated Aug 30, 2026
Winston J. Churchill is Director of AMKOR TECHNOLOGY, INC. (AMKR). 11 SEC Form 4 filings on record going back to 2024, most recently on 31 July 2026. Most recent open-market trade: sold $391K of AMKR on 16 June 2026. Lifetime open-market sales: $926K.
Recent Transactions
6Every recent SEC Form 4 transaction Winston J. Churchill has reported, most recent first.
Other Insiders Active in the Same Stocks
Insiders who reported open-market trades in the last 12 months at the companies Winston J. Churchill 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.
- John T. Kim - $484.90M of AMKR open-market activity in the last 12 months
- 915 Investments, LP - $484.90M of AMKR open-market activity in the last 12 months
- Guillaume Marie Jean Rutten - $9.35M of AMKR open-market activity in the last 12 months
- Mark N. Rogers - $3.05M of AMKR open-market activity in the last 12 months
- Gil C. Tily - $2.09M of AMKR open-market activity in the last 12 months
- Roger Anthony Carolin - $1.52M of AMKR open-market activity in the last 12 months
More Notable Insiders
Other corporate insiders with significant SEC Form 4 track records on InsiderAlpha:
Frequently Asked Questions
Who is Winston J. Churchill?
Winston J. Churchill is a corporate insider, tracked as Director of AMKOR TECHNOLOGY, INC. (AMKR). InsiderAlpha holds 11 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 Winston J. Churchill submitted recently?
3 primary Form 4 filings in the last 90 days, covering 1 company.
Has Winston J. Churchill been buying or selling stock?
Recorded transactions: 0 open-market purchases and 2 open-market sales ($926K) across all tracked filings.
Where can I see all of Winston J. Churchill's SEC filings?
All Form 4 filings, transaction values, and 10b5-1 plan flags are listed on this page and updated in real time as new SEC EDGAR filings are processed.
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