Insiders who reported open-market trades in the last 12 months at the companies Aaron Birnbaum 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.
Erik Olsson - $503K in HRI purchases and sales in the last 12 months
John A. Olin - $427K in HRI purchases and sales in the last 12 months
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Aaron Birnbaum is a corporate insider, tracked as President of HERC HOLDINGS INC (HRI). InsiderAlpha holds 2 primary Form 4 filings for them, the earliest from 2026, updated as new SEC EDGAR filings are processed.
When did Aaron Birnbaum last file a Form 4?
The most recent primary Form 4 on record is dated 10 February 2026, one of 2 filings going back to 2026.
InsiderAlpha's records for Aaron Birnbaum 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.
