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David Gansberg

CIK 1769539 · President, Arch Capital Group · last filed 2026-03-12

David Gansberg is a President, Arch Capital Group who has filed 36 SEC Form 4 insider transactions across 1 company since 2019. The most recent filing, for ACGL, was dated Jul 20, 2026. Across all open-market trades the lifetime net is −$2.2M, making them a net seller over the disclosed history. Current disclosed insider exposure totals $6.6M across reported positions. 37 SEC filings were submitted jointly with ARCH CAPITAL GROUP LTD.

"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

$6.57M

Companies

1

Total Filings

36

Lifetime Open-Market Net

-$2.19M

Filer Profile

Reported Address
230 NORTH ELM STREET
GREENSBORO, NC 27401
Related Filers
ARCH CAPITAL GROUP LTD. — 37 joint filings, latest 2026-07-20
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
ACGLO President, Arch Capital Group 351,466 $18.68 $6.57M -$2.19M 30 2026-03-12

Recent Filings

36 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
2026-07-20 ACGL Notice (144) −76,325 -$7.63M EDGAR
2026-07-02 ACGL Notice (144) −79,273 -$8.05M EDGAR
2026-06-26 ACGL Notice (144) −33,096 -$3.22M EDGAR
2026-03-12 ACGLO Mixed +4,863 -$365.7K EDGAR
2026-03-10 ACGL Notice (144) −5,907 -$569.3K EDGAR
2026-03-05 ACGLO Mixed −5,676 -$1.23M EDGAR
2026-03-02 ACGLO Tax (F) −553 -$55.4K EDGAR
2026-02-26 ACGLO Mixed +28,037 -$50.5K EDGAR
2025-11-20 ACGLO Tax (F) −9,494 -$865.6K EDGAR
2025-03-06 ACGLO Mixed −6,389 -$1.27M EDGAR
Showing 1–10 of 36
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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.