Floyd F. Petersen
Insider
IndividualSelling only2 10b5-1 trades
- 2025
- Nov 17, 2025
- 9
Filings (90d)
Other insiders active in the same stocks
Insiders who reported open-market trades in the last 12 months at the companies Floyd F. Petersen 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.
- Rong Zhou - $315K in AMPH purchases and sales in the last 12 months
- William J. Peters - $287K in AMPH purchases and sales in the last 12 months
- Richard K. Prins - $275K in AMPH purchases and sales in the last 12 months
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Frequently asked questions
Who is Floyd F. Petersen?
Floyd F. Petersen is a corporate insider of Amphastar Pharmaceuticals, Inc. (AMPH). InsiderAlpha holds 9 primary Form 4 filings for them, the earliest from 2025, updated as new SEC EDGAR filings are processed.
When did Floyd F. Petersen last file a Form 4?
The most recent primary Form 4 on record is dated 17 November 2025, one of 9 filings going back to 2025.
Has Floyd F. Petersen been buying or selling stock?
Recorded transactions: 0 open-market purchases and 9 open-market sales ($545K) across all tracked filings.
