David A. Brown

CIK: 0001394399

Transaction Breakdown

Open Market Buys (P)0 (0.0%)

High conviction signal

Open Market Sales (S)3 (20.0%)

Position reduction

Option Exercises (M)6 (40.0%)

Derivative conversions

Awards (A)5 (33.3%)

Compensation grants

Other (G, F, J, C, D, …)1 (6.7%)

Gifts, tax withholding, conversions, dispositions to the issuer and other codes

Companies & Roles (2)

Hamilton Insurance Group, Ltd.

Director

MIAX

MIAMI INTERNATIONAL HOLDINGS, INC.

Director

Discretionary Trading P&L

Holdings

Transaction History (15 total)

HG
Hamilton Insurance Group, Ltd.
Sep 3, 2026
Sale(S)
Indirect
50K shares at avg. $36.12$1.8M
MIAX
MIAMI INTERNATIONAL HOLDINGS, INC.
Jul 8, 2026
Tax Payment(F)
Direct
171 shares at avg. $43.72$7K
MIAX
MIAMI INTERNATIONAL HOLDINGS, INC.
Jun 16, 2026
Award(A)
Direct
5K shares-
MIAX
MIAMI INTERNATIONAL HOLDINGS, INC.
Jun 15, 2026
Award(A)
Direct
2.3K shares-
HG
Hamilton Insurance Group, Ltd.
May 18, 2026
Sale(S)
Indirect
37.3K shares at avg. $32.16$1.2M
HG
Hamilton Insurance Group, Ltd.
May 15, 2026
Sale(S)
Indirect
12.7K shares at avg. $31.82$404K
HG
Hamilton Insurance Group, Ltd.
May 5, 2026
Award(A)
Direct
4.9K shares-
MIAX
MIAMI INTERNATIONAL HOLDINGS, INC.
Aug 15, 2025
Exercise(M)
Stock Option (Right to Buy)
Direct
278 shares-
MIAX
MIAMI INTERNATIONAL HOLDINGS, INC.
Aug 15, 2025
Exercise(M)
Stock Option (Right to Buy)
Direct
7.5K shares-
MIAX
MIAMI INTERNATIONAL HOLDINGS, INC.
Aug 15, 2025
Exercise(M)
Stock Option (Right to Buy)
Direct
278 shares-
MIAX
MIAMI INTERNATIONAL HOLDINGS, INC.
Aug 15, 2025
Exercise(M)
Stock Option (Right to Buy)
Direct
18.8K shares-
MIAX
MIAMI INTERNATIONAL HOLDINGS, INC.
Aug 15, 2025
Exercise(M)
Stock Option (Right to Buy)
Direct
18.8K shares-
MIAX
MIAMI INTERNATIONAL HOLDINGS, INC.
Aug 15, 2025
Exercise(M)
Stock Option (Right to Buy)
Direct
7.5K shares-
HG
Hamilton Insurance Group, Ltd.
May 15, 2025
Award(A)
Direct
7.2K shares-
HG
Hamilton Insurance Group, Ltd.
Jun 13, 2024
Award(A)
Direct
9K shares-

		Type	Shares	Price		Ownership
Sep 3, 2026	HG Hamilton Insurance Group, Ltd.	Sale(S)	50,000	$36.12	$1,806,215	Indirect
Jul 8, 2026	MIAX MIAMI INTERNATIONAL HOLDINGS, INC.	Tax Payment(F)	171	$43.72	$7,476	Direct
Jun 16, 2026	MIAX MIAMI INTERNATIONAL HOLDINGS, INC.	Award(A)	4,970	-	$0	Direct
Jun 15, 2026	MIAX MIAMI INTERNATIONAL HOLDINGS, INC.	Award(A)	2,267	-	$0	Direct
May 18, 2026	HG Hamilton Insurance Group, Ltd.	Sale(S)	37,300	$32.16	$1,199,654	Indirect
May 15, 2026	HG Hamilton Insurance Group, Ltd.	Sale(S)	12,700	$31.82	$404,117	Indirect
May 5, 2026	HG Hamilton Insurance Group, Ltd.	Award(A)	4,929	-	$0	Direct
Aug 15, 2025	MIAX MIAMI INTERNATIONAL HOLDINGS, INC.	Exercise(M) Stock Option (Right to Buy)	278	-	-	Direct
Aug 15, 2025	MIAX MIAMI INTERNATIONAL HOLDINGS, INC.	Exercise(M) Stock Option (Right to Buy)	7,500	-	-	Direct
Aug 15, 2025	MIAX MIAMI INTERNATIONAL HOLDINGS, INC.	Exercise(M) Stock Option (Right to Buy)	278	-	-	Direct
Aug 15, 2025	MIAX MIAMI INTERNATIONAL HOLDINGS, INC.	Exercise(M) Stock Option (Right to Buy)	18,750	-	-	Direct
Aug 15, 2025	MIAX MIAMI INTERNATIONAL HOLDINGS, INC.	Exercise(M) Stock Option (Right to Buy)	18,750	-	-	Direct
Aug 15, 2025	MIAX MIAMI INTERNATIONAL HOLDINGS, INC.	Exercise(M) Stock Option (Right to Buy)	7,500	-	-	Direct
May 15, 2025	HG Hamilton Insurance Group, Ltd.	Award(A)	7,187	-	-	Direct
Jun 13, 2024	HG Hamilton Insurance Group, Ltd.	Award(A)	8,955	-	-	Direct

1-15 of 15 transactions

About BROWN DAVID A

BROWN DAVID A (SEC CIK 0001394399) files insider reports with the SEC as Director of Hamilton Insurance Group, Ltd. (HG) and Director of MIAMI INTERNATIONAL HOLDINGS, INC. (MIAX).

Signal8 holds 9 ownership filings by BROWN DAVID A (1 Form 3, 8 Form 4), filed between May 19, 2025 and Sep 8, 2026. Those filings report 15 transactions, from Jun 13, 2024 to Sep 3, 2026. Signal8's Form 4 history starts in Sep 2024.

The business address on BROWN DAVID A's filings is in PEMBROKE.

Recent filings by BROWN DAVID A

Sep 3, 2026: Open-market sale of HG shares (Form 4, code S).
Jul 8, 2026: Tax withholding of MIAX shares (Form 4, code F).
Jun 16, 2026: Grant or award of MIAX shares (Form 4, code A).
Jun 15, 2026: Grant or award of MIAX shares (Form 4, code A).
May 18, 2026: Open-market sale of HG shares (Form 4, code S).

Other insiders filing for Hamilton Insurance Group, Ltd. (HG)

Duffin Timothy James, Chief Underwriting Officer
Albo Giuseppina, Chief Executive Officer
Levenson Jonathan B., Group Treasurer
Vaughan Therese M, Director
Patterson Alan Neil, Director
Deegan Brian John, Group Chief Accounting Officer

How to read Form 4 transaction codes