ARCH CAPITAL GROUP LTD. — Director's Dealing 2018

May 15, 2018

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: ARCH CAPITAL GROUP LTD. (ACGL)
CIK: 0000947484
Period of Report: 2018-05-11

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

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2018-05-10	Common Shares, $.0033 par value per share	G	2181	—	Disposed	21130	Direct
2018-05-10	Common Shares, $.0033 par value per share	G	2181	—	Acquired	207915	Indirect
2018-05-11	Common Shares, $.0033 par value per share	A	2665	—	Acquired	23795	Direct
2018-05-14	Common Shares, $.0033 par value per share	G	5505	—	Disposed	18290	Direct
2018-05-14	Common Shares, $.0033 par value per share	G	5505	—	Acquired	213420	Indirect

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2018-05-11	Stock Option (right to buy)	$79.65	A	11895	Acquired	2028-05-11	Common Shares, $.0033 par value per share (11895)	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Shares, $.0033 par value per share	200	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: On May 10, 2018 and May 14, 2018, the reporting person contributed 2,181 common shares and 5,505 common shares, respectively, to a company which is owned by a family trust; beneficiaries of the family trust are the reporting person, his spouse and their children.

F3: Represents restricted shares that vest in three equal annual installments, commencing May 11, 2019, and the next two installments on May 11, 2020 and May 11, 2021, subject to the applicable award agreement.

F4: The stock option becomes exercisable in three equal annual installments commencing May 11, 2019, and the next two installments on May 11, 2020 and May 11, 2021, subject to the applicable award agreement.