Christine Todd - 03 Mar 2026 Form 4 Insider Report for ARCH CAPITAL GROUP LTD. (ACGL)

Role: Chief Investment Officer
Signature: /s/ Christine Todd
Issuer symbol: ACGL
Transactions as of: 03 Mar 2026
Net transactions value: $0
Form type: 4
Filing time: 05 Mar 2026, 16:19:26 UTC
Previous filing: 26 Feb 2026
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Todd Christine	Chief Investment Officer	WATERLOO HOUSE, GROUND FLOOR, 100 PITTS BAY ROAD, PEMBROKE, BERMUDA	/s/ Christine Todd	05 Mar 2026	0001864958

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	ACGL	Common Shares, $.0011 par value per share	Award		+3,981	+4.1%	$0.000000^*	100,230	03 Mar 2026	Direct

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
transaction	ACGL	Stock Option (Right to Buy)	Award		+14,238		$0.000000^*	14,238	03 Mar 2026	Common Shares, $.0011 par value per share	14,238	$100.48	Direct	F1
transaction	ACGL	Stock Option (Right to Buy)	Award		+6,305		$0.000000^*	6,305	03 Mar 2026	Common Shares, $.0011 par value per share	6,305	$100.48	Direct

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

Explanation of Responses:

Id	Content
F1	This stock option is exercisable in three equal annual installments commencing March 3, 2027, and the next two installments on March 3, 2028 and March 3, 2029, subject to the applicable award agreement.