Filings (90d)
Other insiders active in the same stocks
Insiders who reported open-market trades in the last 12 months at the companies Mark C. Biderman 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.
- Stuart Rothstein - $529K in ARI purchases and sales in the last 12 months
- Carmencita N.M. Whonder - $50K in ARI purchases and sales in the last 12 months
- Michael Salvati - $7K in ARI purchases and sales in the last 12 months
More insiders (A-Z)
Browse nearby insider profiles in alphabetical order.
Frequently asked questions
Who is Mark C. Biderman?
Mark C. Biderman is a corporate insider of Apollo Commercial Real Estate Finance, Inc. (ARI). InsiderAlpha holds 3 primary Form 4 filings for them, the earliest from 2025, updated as new SEC EDGAR filings are processed.
When did Mark C. Biderman last file a Form 4?
The most recent primary Form 4 on record is dated 3 April 2026, one of 3 filings going back to 2025.
Has Mark C. Biderman been buying or selling stock?
Recorded transactions: 0 open-market purchases and 1 open-market sale ($95K) across all tracked filings.
