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Brian Hirsch

CIK 1851605 · last filed 2026-05-29

Brian Hirsch is a corporate insider who has filed 39 SEC Form 4 insider transactions across 2 companies since 2021. The most recent filing, for ACVA, was dated May 29, 2026. Across all open-market trades the lifetime net is −$58.9M, making them a net seller over the disclosed history. Current disclosed insider exposure totals $4.1M across reported positions.

"Disclosed insider exposure" sums this person's most-recently-reported share counts across each company they're an insider in, multiplied by the current underlying price. It is not net worth — it misses retail holdings, private investments, real estate, index funds, and any company where the person isn't an SEC-reporting insider. For informational purposes only.

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Disclosed Exposure

$4.14M

Companies

2

Total Filings

39

Lifetime Open-Market Net

-$58.86M

Filer Profile

Reported Address
C/O ACV AUCTIONS INC.
640 ELLICOTT STREET, #321
BUFFALO, NY 14203
Profile details as reported on the filer's SEC submissions — for individual insiders the address is often in care of the issuer. Related filers are identified from jointly filed SEC submissions and shared reported addresses. View filings on SEC EDGAR.

Holdings By Company

Latest on-record share count from this person's most recent non-derivative Form 4 transaction in each company. Disclosed exposure = shares × current underlying price.
Symbol Role Shares Price Disclosed Exposure Lifetime OM Net Filings Latest Filed
ACVA Director 592,875 $6.98 $4.14M -$59.54M 24 2026-05-29
Katapult Holdings, Inc. (KPLTW) Delisted Director 5,382,950 $0.00 $1.1K $677.2K 8 2023-06-08

Recent Filings

39 filings
Insider activity across all companies, newest first. Form 4 rows are post-trade confirmations (buys, sells, grants, exercises). Notice (144) rows are pre-trade notices of intent to sell restricted or control stock under Rule 144 — they may not all execute. Compare adjacent dates to see which notices became actual sales.
Filed Symbol Action Net Shares Net $ Link
2026-05-29 ACVA Grant (A) +27,500 $0 EDGAR
2025-11-14 ACVA Buy (P) +80,571 $500.3K EDGAR
2025-05-30 ACVA Grant (A) +9,868 $0 EDGAR
2025-02-18 ACVA Conv (C) +1,862,787 $0 EDGAR
2024-11-13 ACVA Mixed — -$3.03M EDGAR
2024-11-12 ACVA Notice (144) −146,681 -$3.09M EDGAR
2024-08-23 ACVA Notice (144) −61,666 -$1.13M EDGAR
2024-08-23 ACVA Mixed — -$1.15M EDGAR
2024-06-12 ACVA Sell (S) −22,958 -$416.2K EDGAR
2024-06-10 ACVA Sell (S) −72,462 -$1.32M EDGAR
Showing 1–10 of 39
Page 1 of 4
Form 4 codes: P = open-market purchase · S = open-market sale · A = grant/award · M = option exercise · F = tax withholding at vest · G = bona-fide gift · D = disposition to issuer · J = other (see filing footnote). Only P / S codes carry directional signal.
Notice (144 / 144/A): Form 144 is a notice of intent to sell restricted/control stock under Rule 144, filed before the sale; 144/A is an amendment. Many notices are pre-scheduled under Rule 10b5-1 plans. A Form 4 with code S typically follows within a few days when the planned sale executes; missing follow-up Form 4s suggest the notice was cancelled or modified.