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 OF SECURITIES 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 * Lyons Mark Donald   2. Issuer Name and Ticker or Trading Symbol ARCH CAPITAL GROUP LTD. [ACGL] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner __X__ Officer (give title below) _____ Other (specify below) EVP,CFO & Treasurer (Last) (First) (Middle) C/O ARCH CAPITAL GROUP LTD., 100 PITTS BAY ROAD, GROUND FLOOR 3. Date of Earliest Transaction (Month/Day/Year) 05/13/2016 (Street) PEMBROKE, D0 HM 08 4. If Amendment, Date Original Filed(Month/Day/Year) 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 (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 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 05/13/2016   A   8,080 A (2) 202,676 (1) D   Common Shares, $.0033 par value per share 05/13/2016   M   7,950 A $ 23.707 210,626 (1) D   Common Shares, $.0033 par value per share 05/13/2016   M   5,000 A $ 25.01 215,626 (1) D   Common Shares, $.0033 par value per share 05/13/2016   M   5,000 A $ 23.1 220,626 (1) D   Common Shares, $.0033 par value per share 05/13/2016   F   11,796 D $ 71.7 208,830 D

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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 (Month/Day/Year)

3A. Deemed Execution Date, if any (Month/Day/Year)

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 (Month/Day/Year)

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

Stock Option (right to buy)

$ 71.7

05/13/2016

A

8,080

(3)

05/13/2026

Common Shares, $.0033 par value per share

8,080

$ 0

8,080

D

Share Appreciation Right

$ 23.707

05/13/2016

M

7,950

(4)

05/11/2017

Common Shares, $.0033 par value per share

7,950

$ 0

0

D

Share Appreciation Right

$ 25.01

05/13/2016

M

5,000

(5)

05/05/2020

Common Shares, $.0033 par value per share

5,000

$ 0

15,000

D

Share Appreciation Right

$ 23.1

05/13/2016

M

5,000

(6)

05/09/2018

Common Shares, $.0033 par value per share

5,000

$ 0

8,050

D

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
Lyons Mark Donald C/O ARCH CAPITAL GROUP LTD. 100 PITTS BAY ROAD, GROUND FLOOR PEMBROKE, D0 HM 08			EVP,CFO & Treasurer

Signatures

/s/ Mark D. Lyons		05/16/2016
**Signature of Reporting Person		Date

Explanation of Responses:

*	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).
(1)	86,722 of such amount will settle in Issuer's common shares upon the termination of the Reporting Person's employment, as specifically provided in the award agreements.
(2)	Represents restricted shares that vest in three equal annual installments on May 13th in each of 2017, 2018 and 2019, subject to the applicable award agreement.
(3)	The stock option will become exercisable in three equal annual installments, with the first installment becoming exercisable on May 13, 2017 and the next two installments on May 13, 2018 and May 13, 2019, subject to the applicable award agreement.
(4)	The share appreciation right became exercisable in three equal annual installments commencing May 11, 2008, subject to the applicable award agreement.
(5)	The share appreciation right became exercisable in three equal annual installments commencing May 5, 2011, subject to the applicable award agreement.
(6)	The share appreciation right became exercisable in three equal annual installments commencing May 9, 2009, subject to the applicable award agreement.

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