Summary
Updated Aug 30, 2026
Donald R. Dixon is Director of Amprius Technologies, Inc. (AMPX). 4 SEC Form 4 filings on record going back to 2025, most recently on 16 June 2026. Most recent open-market trade: sold $1.46M of AMPX on 16 June 2026. Lifetime open-market sales: $2.54M.
Recent Transactions
5Every recent SEC Form 4 transaction Donald R. Dixon 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 Donald R. Dixon 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 - $57.62M of AMPX open-market activity in the last 12 months
- Constantin Ionel Stefan - $8.60M of AMPX open-market activity in the last 12 months
- Wen Hsuan Hsieh - $7.62M of AMPX open-market activity in the last 12 months
- Steven Chu - $5.86M of AMPX open-market activity in the last 12 months
- Thomas M. Stepien - $1.34M of AMPX 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 Donald R. Dixon?
Donald R. Dixon is a corporate insider, tracked as Director of Amprius Technologies, Inc. (AMPX). InsiderAlpha holds 4 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 Donald R. Dixon submitted recently?
2 primary Form 4 filings in the last 90 days, covering 1 company.
Has Donald R. Dixon been buying or selling stock?
Recorded transactions: 0 open-market purchases and 3 open-market sales ($2.54M) across all tracked filings.
Where can I see all of Donald R. Dixon'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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