ARCH CAPITAL GROUP LTD. — Director's Dealing 2017

May 1, 2017

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: ARCH CAPITAL GROUP LTD. (ACGL)
CIK: 0000947484
Period of Report: 2017-04-27

Reporting Person: Vollaro John D (Director)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2017-04-27	Common Shares, $.0033 par value per share	M	37650	$23.707	Acquired	37650	Direct
2017-04-27	Common Shares, $.0033 par value per share	F	9125	$97.82	Disposed	28525	Direct
2017-04-28	Common Shares, $.0033 par value per share	G	28525	—	Disposed	0	Direct
2017-04-28	Common Shares, $.0033 par value per share	G	28525	—	Acquired	137960	Indirect
2017-04-28	Common Shares, $.0033 par value per share	S	2911	$97.2583	Disposed	135049	Indirect

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2017-04-27	Share Appreciation Right	$23.707	M	37650	Disposed	2017-05-11	Common Shares, $.0033 par value per share (37650)	Direct

Footnotes

F1: On April 27, 2017, the reporting person exercised 37,650 share appreciation rights; 9,125 common shares were withheld in payment of the exercise price.

F2: The share appreciation right became exercisable in three equal installments, with the first installment exercisable on May 11, 2008 and the second and third installments exercisable on May 11, 2009 and 2010, respectively.

F3: On April 28, 2016, the reporting person contributed such shares to a revocable trust for which he serves as trustee.

F4: Such common shares are held by a revocable trust for which the reporting person serves as trustee.

F5: Represents a weighted average sales price; the sales prices range from $97.25 to $97.30. Upon request, the full sale information regarding the number of shares sold at each price increment will be provided to the Commission or to the security holder of the issuer.

F6: A portion of the proceeds will be used to satisfy federal and state income tax obligations.