ARCH CAPITAL GROUP LTD. — Director's Dealing 2015

May 14, 2015

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: ARCH CAPITAL GROUP LTD. (ACGL)
CIK: 0000947484
Period of Report: 2015-05-13

Reporting Person: Hutchings W Preston (SVP & Chief Investment Officer)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2015-05-13	Common Shares, $.0033 par value per share	A	9220	—	Acquired	36159	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2015-05-13	Stock Option (right to buy)	$62.505	A	9220	Acquired	2025-05-13	Common Shares, $.0033 par value per share (9220)	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Shares, $.0033 par value per share	168687	Indirect
Common Shares, $.0033 par value per share	200	Indirect
Series C Non-Cumulative Preferred Shares (non-convertible)	4000	Indirect

Footnotes

F1: The shares are held by a company which is owned by a family trust; beneficiaries of the family trust are the reporting person, his spouse and their children.

F2: Represents restricted shares that vest in three equal annual installments on May 13th in each of 2016, 2017 and 2018, subject to the applicable award agreement.

F3: The stock option will become exercisable in three equal annual installments, with the first installment becoming exercisable on May 13, 2016 and the next two installments on May 13, 2017 and May 13, 2018, subject to the applicable award agreement.

F4: Includes 13,118 common shares previously reported by the reporting person as directly owned. Such shares were contributed to a company which is owned by a family trust; beneficiaries of the family trust are the reporting person, his spouse and their children. See footnote 1 above.