Sec Form 4 Filing - PASQUESI JOHN M @ ARCH CAPITAL GROUP LTD. - 2015-05-22

FORM 4 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person PASQUESI JOHN M 2. Issuer Name and Ticker or Trading Symbol ARCH CAPITAL GROUP LTD. [ ACGL] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) X __ Director _____ 10% Owner _____ Officer (give title below) X __ Other (specify below) Vice Chairman (Last) (First) (Middle) C/O ARCH CAPITAL GROUP LTD., WATERLOO HOUSE, GROUND FL, 100 PITTS RD 3. Date of Earliest Transaction (MM/DD/YY) 05/22/2015 (Street) PEMBROKE, D0HM 08 4. If Amendment, Date Original Filed (MM/DD/YY) 6. Individual or Joint/Group Filing (Check Applicable Line) __ X __ Form filed by One Reporting Person _____ Form filed by More than One Reporting Person (City) (State) (Zip)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned 1.Title of Security (Instr. 3) 2. Transaction Date (MM/DD/YY) 2A. Deemed Execution Date, if any (MM/DD/YY) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4) Code V Amount (A) or (D) Price Common Shares, $.0033 par value per share 05/22/2015 G V 12,698 ( 3 ) D $ 0 670,106 I By Limited Liability Company ( 1 ) Common Shares, $.0033 par value per share 56,052 ( 4 ) I By Trust ( 2 ) Common Shares, $.0033 par value per share 05/22/2015 G V 15,000 ( 5 ) D $ 0 41,052 ( 2 ) I By Trust ( 2 ) Common Shares, $.0033 par value per share 05/22/2015 S 6,237 D $ 64.6414 ( 6 ) 52,515 I Family limited partnership Common Shares, $.0033 par value per share 05/22/2015 S 56,700 D $ 64.6414 ( 6 ) 477,412 I By Trusts Common Shares, $.0033 par value per share 509,227 I By Trust ( 2 ) Common Shares, $.0033 par value per share 1,201 D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned ( e.g. , puts, calls, warrants, options, convertible securities) 1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (MM/DD/YY) 3A. Deemed Execution Date, if any (MM/DD/YY) 4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4, and 5) 6. Date Exercisable and Expiration Date (MM/DD/YY) 7. Title and Amount of Underlying Securities (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4) Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other PASQUESI JOHN M C/O ARCH CAPITAL GROUP LTD. WATERLOO HOUSE, GROUND FL, 100 PITTS RD PEMBROKE, D0HM 08 X Vice Chairman Signatures /s/ Louis Petrillo, Attorney in fact 05/27/2015 Signature of Reporting Person Date

Explanation of Responses:

( 1 )The security holder is Otter Capital LLC, for which the reporting person serves as managing member. All indicated securities are included because of his affiliation with Otter Capital LLC. ( 2 )The common shares are held by a revocable trust. The reporting person and his spouse are the trustees and the beneficiaries. ( 3 )Otter Capital LLC contributed 12,698 common shares of the issuer to the a revocable trust, for which the reporting person and his spouse are the trustees and the beneficiaries. ( 4 )Includes 12,698 common shares of the issuer that were previously reported as indirectly owned by Otter Capital LLC. ( 5 )Such common shares were gifted to charity; 12,698 of such shares were previously held by Otter Capital and were contribted to the reporting person's trust. See FNs 3 and 4. ( 6 )Represents a weighted average sale price; the sales prices ranged from $64.435 to $64.96. Upon request, the full sale information regarding the number of shares sold at each price increment will be provided to the Commission or a security holder of the issuer.

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.

* If the form is filed by more than one reporting person, see Instruction 4(b)(v).

** Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).

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