ARCH CAPITAL GROUP LTD. — Director's Dealing 2015

May 11, 2015

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: ARCH CAPITAL GROUP LTD. (ACGL)
CIK: 0000947484
Period of Report: 2015-05-09

Reporting Person: McElroy David (Chairman & CEO Arch Insur Gr)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2015-05-09	Common Shares, $.0033 par value per share	F	271	$62.665	Disposed	74369	Direct

Footnotes

F1: 43,500 of such amount will settle in Issuer's common shares upon the termination of the Reporting Person's employment, as specifically provided in the applicable award agreement. Amount includes 1 common share that was acquired under the Arch Capital Group Ltd. Employee Share Purchase Plan on May 31, 2015.

F2: Represents shares withheld to pay taxes due upn vesting of restricted stock.