Maamoun Rajeh - 04 Mar 2026 Form 4 Insider Report for ARCH CAPITAL GROUP LTD. (ACGL)

Role: President, Arch Capital Group
Signature: /s/ Maamoun Rajeh
Issuer symbol: ACGL
Transactions as of: 04 Mar 2026
Net transactions value: $0
Form type: 4
Filing time: 06 Mar 2026, 16:20:53 UTC
Previous filing: 05 Mar 2026
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Rajeh Maamoun	President, Arch Capital Group	WATERLOO HOUSE, GROUND FLOOR, 100 PITTS BAY ROAD, PEMBROKE, BERMUDA	/s/ Maamoun Rajeh	06 Mar 2026	0001718249

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	ACGL	Common Shares, $.0011 par value per share	Gift		-40,600	-8.7%	$0.000000^*	428,378	04 Mar 2026	Direct	F1
transaction	ACGL	Common Shares, $.0011 par value per share	Gift		+40,600		$0.000000^*	40,600	04 Mar 2026	By LLC	F1

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	The reporting person contributed the Common Shares to a wholly-owned LLC (of which he is the manager), immediately following which he transferred, for no consideration, all of the outstanding ownership interests of the LLC to two irrevocable trusts (50% each) established for the primary benefit of his descendants and of which his brother is the trustee. The reporting person disclaims beneficial ownership of the shares held directly by the LLC for purposes of Section 16 of the Securities Exchange Act of 1934, except to the extent of his pecuniary interest therein.

Content

The reporting person contributed the Common Shares to a wholly-owned LLC (of which he is the manager), immediately following which he transferred, for no consideration, all of the outstanding ownership interests of the LLC to two irrevocable trusts (50% each) established for the primary benefit of his descendants and of which his brother is the trustee. The reporting person disclaims beneficial ownership of the shares held directly by the LLC for purposes of Section 16 of the Securities Exchange Act of 1934, except to the extent of his pecuniary interest therein.