SEC Form 4 reporting owner

Brown David A

Brown David A has filed 8 Form 4 transactions reported between May 5, 2026 and September 3, 2026, as Director of Hamilton Insurance Group, Ltd. and Director of MIAMI INTERNATIONAL HOLDINGS, INC..

Name as filed: BROWN DAVID A

Open-market buys, 24 mo

None

reported

Open-market sales, 24 mo

$3.4M

3 lines

Companies

with Form 4 filings

Latest transaction

Sep 3, 2026

transaction date

Roles and reported holdings

HGHamilton Insurance Group, Ltd.
May 5, 2026 – Sep 3, 2026
Director
Held indirectly (latest line)400,000 sh as of Sep 3, 2026 · Form 4
24 months: $3.4M sold
MIAXMIAMI INTERNATIONAL HOLDINGS, INC.
Jun 15, 2026 – Jul 8, 2026
Director
Held directly7,066 sh as of Jul 8, 2026 · Form 4

Transaction history

All 8 reported transactions, newest first. Every row links to the Form 4 on SEC EDGAR.

Date	Company	Type	Shares	Price	Value	Owned after	Filing
Sep 3, 2026	HGDirector	Open-market saleCode S · indirect	50,000	$36.12	$1.8M@ $36.12	400,000	Form 4
Jul 8, 2026	MIAXDirector	Shares withheld for tax or exercise priceCode F · direct	171	$43.72	$7K@ $43.72	7,066	Form 4
Jun 16, 2026	MIAXDirector	Grant or awardCode A · direct	5,142	—	—	5,142	Form 4
Jun 16, 2026	MIAXDirector	Grant or awardCode A · direct	4,970	—	—	7,237	Form 4
Jun 15, 2026	MIAXDirector	Grant or awardCode A · direct	2,267	—	—	2,267	Form 4
May 18, 2026	HGDirector	Open-market saleCode S · indirect	37,300	$32.16	$1.2M@ $32.16	450,000	Form 4
May 15, 2026	HGDirector	Open-market saleCode S · indirect	12,700	$31.82	$404K@ $31.82	487,300	Form 4
May 5, 2026	HGDirector	Grant or awardCode A · direct	4,929	—	—	110,308	Form 4

How this page is built

Every row comes from a Form 4 filed with the SEC, which officers, directors and holders of more than 10% of a company’s stock must file within two business days of a trade. Transactions are grouped by the reporting owner’s name as filed (spacing, capitals and punctuation ignored); two different people filing under an identical name would appear together, and one person filing under two spellings appears on two pages.

Open-market totals count code P purchases and code S sales over the last 24 months. The same trade reported on more than one filing is counted once; when another owner (for example a fund and its general partner) reports the identical trade, they are listed beside it. Holdings are the shares owned after the latest purchase, sale, gift or tax-withholding line, shown separately for direct and indirect ownership; an indirect figure is one holding line, not a total across every trust or entity.

This page describes what was filed with the SEC; it is not investment advice or a recommendation to buy or sell any security.