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DAVID A BROWN

CIK 1394399 · Chairman of the Board · last filed 2026-07-09

DAVID A BROWN is a Chairman of the Board who has filed 22 SEC Form 4 insider transactions across 3 companies since 2007. The most recent filing shows the insider had shares withheld for taxes covering $7.5K of MIAX on Jul 9, 2026. Across all open-market trades the lifetime net is −$388.8K, making them a net seller over the disclosed history. Current disclosed insider exposure totals $20.1M 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

$20.06M

Companies

3

Total Filings

22

Lifetime Open-Market Net

-$388.8K

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
MIAX Director 7,066 $42.41 $299.7K $0 3 2026-07-09
HG Chairman of the Board 560,308 $35.26 $19.76M -$1.60M 5 2026-05-20
Flagstone Reinsurance Holdings, S.A. (FSR) Delisted Chief Executive Officer 0 $0.09 $0 $1.22M 12 2012-11-30

Recent Filings

22 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
2026-07-09 MIAX Tax (F) −171 -$7.5K EDGAR
2026-06-17 MIAX Grant (A) +7,237 $0 EDGAR
2026-05-20 HG Sell (S) −37,300 -$1.20M EDGAR
2026-05-19 HG Sell (S) −12,700 -$404.1K EDGAR
2026-05-18 HG Notice (144) −37,300 -$1.20M EDGAR
2026-05-15 HG Notice (144) −12,700 -$404.1K EDGAR
2026-05-07 HG Grant (A) +4,929 $0 EDGAR
2025-08-19 MIAX Exer (M) — $0 EDGAR
2025-05-19 HG Grant (A) +16,142 $0 EDGAR
2024-03-05 HG Grant (A) +2,508 $0 EDGAR
Showing 1–10 of 22
Page 1 of 3
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.