Ownership Submission
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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(Print or Type Responses)
1. Name and Address of Reporting Person *
IORDANOU CONSTANTINE
   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
__X__ Officer (give title below) _____ Other (specify below)
Chairman & CEO
(Last)
(First)
(Middle)
C/O ARCH CAPITAL GROUP LTD., WATERLOO HOUSE,100 PITTS BAY ROAD		 3. Date of Earliest Transaction (Month/Day/Year)
08/29/2016
(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 08/29/2016   S(3)   50,000 D $ 79.5031 (2) 243,030 D  
Common Shares, $.0033 par value per share 08/31/2016   G V 100 D $ 0 242,930 D  
Common Shares, $.0033 par value per share               201,676 I By 2015 GRAT
Common Shares, $.0033 par value per share               158,514 I By 2010 GRAT
Common Shares, $.0033 par value per share               83,333 I By Limited Liability Company
Common Shares, $.0033 par value per share               116,613 I By Limited Liability Company
Common Shares, $.0033 par value per share               11,616 I By child
Series C Non-Cumulative Preferred Shares (non-convertible)               6,000 D  
Series C Non-Cumulative Preferred Shares (non-convertible)               1,800 I By spouse

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
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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
Share Appreciation Right $ 23.707 06/30/2016   G V   11,292 (1)   (4) 05/11/2017 Common Shares, $.0033 par value per share 11,292 $ 0 112,446 (1) I By 2010 GRAT
Share Appreciation Right $ 23.707 06/30/2016   G V 11,292 (1)     (4) 05/11/2017 Common Shares, $.0033 par value per share 11,292 $ 0 22,554 (1) D  

Reporting Owners

Reporting Owner Name / Address Relationships
 Director  10% Owner  Officer  Other
IORDANOU CONSTANTINE
C/O ARCH CAPITAL GROUP LTD.
WATERLOO HOUSE,100 PITTS BAY ROAD
PEMBROKE, D0 HM 08		   X     Chairman & CEO  

Signatures

 /s/ Louis Petrillo, Attorney in fact   08/31/2016
**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) On June 30, 2016, 11,292 share appreciation rights were distributed from the 2010 GRAT. Such share appreciation rights were previously reported as indirectly beneficially held by the 2010 GRAT. Following such distribution, the reporting person owns 22,554 share appreciation rights directly and 112,446 indirectly by the 2010 GRAT.
(2) Represents a weighted average sales price; the sales prices range from $79.405 to $79.69. Upon request, the full sale information regarding the number of shares sold at each price increment will be provide to the Commission or to the security holder of the issuer.
(3) The shares were sold in order to satisfy state and federal income taxes.
(4) The share appreciation right became exercisable in three equal annual installments commencing May 11, 2008, subject to the applicable award agreement.

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