BIDERMAN MARK C

Director · ARI

As of 2026-09-16, BIDERMAN MARK C has 3 Form 4 transactions on record across 1 company — 1 in the trailing 12 months.

Everything this person has disclosed to the SEC on Form 4 — across every company they file for — reconstructed from the public record. A filing history, not a tip sheet.

Reconstructed holdings

Direct: $457KIndirect: $0$457Kas of 2026-09-16
  • Direct $457K
  • Indirect $0
ARIdirect70,374 sh$457K

Reconstructed from this person's own Form 4 filings — the total each filing reported owning afterward, priced at the close on the as-of date shown. A filed position can lag the real one.

Direct and indirect holdings (e.g. through a trust or fund) are tagged separately, as filed.

Trades by company

ARI · 3 trades
2026-04-01: Award / grant, 9,587 sh ($0)2025-04-29: Sale, 10,000 sh ($95K)2025-04-01: Award / grant, 10,162 sh ($0)

Filing ledger

DateCompanyActionShares @ priceValueOwnership ΔOwned afterFiling
2025-04-29ARISale10,000 @ $9.48$95K−14.1% of holding60,787Form 4
2 award / exercise / gift records — not counted as purchases
DateCompanyActionSharesOwned afterFiling
2026-04-01ARIAward / grant9,58770,374Form 4
2025-04-01ARIAward / grant10,16270,787Form 4

Source: SEC Form 4 filings. Each row links to its original filing.

Research tool, not investment advice — historical frequencies, not recommendations. A product of Marovel Technologies LLC. Full terms.