Summary
Latest filing:
Derek Reisfield is Director of Swarmer, Inc (SWMR). 2 SEC Form 4 filings on record, most recently on 2 October 2026.
Trading pattern
InsiderAlpha's records for Derek Reisfield go back to 2026: 2 primary Form 4 filings, an average of 2.0 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.
Other insiders active in the same stocks
Insiders who reported open-market trades in the last 12 months at the companies Derek Reisfield 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.
- Alexander Fink - $1.36M in SWMR purchases and sales in the last 12 months
- Justin Matthew Zeefe - $576K in SWMR purchases and sales in the last 12 months
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Frequently asked questions
Who is Derek Reisfield?
Derek Reisfield is a corporate insider, tracked as Director of Swarmer, Inc (SWMR). InsiderAlpha holds 2 primary Form 4 filings for them, the earliest from 2026, updated as new SEC EDGAR filings are processed.
How many SEC Form 4 filings has Derek Reisfield submitted recently?
2 primary Form 4 filings in the last 90 days, covering 1 company.