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 *
STAFFORD JOHN S III
   2. Issuer Name and Ticker or Trading Symbol
Xencor Inc [XNCR] 		5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
_____ Director __X__ 10% Owner
_____ Officer (give title below) _____ Other (specify below)
(Last)
(First)
(Middle)
350 N. ORLEANS STREET, SUITE 2N		 3. Date of Earliest Transaction (Month/Day/Year)
08/09/2016
(Street)

CHICAGO, IL 60654-1975		 4. If Amendment, Date Original Filed(Month/Day/Year)
 6. Individual or Joint/Group Filing(Check Applicable Line)
___ Form filed by One Reporting Person
_X_ 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 Stock 08/09/2016   S   10,000 D $ 21.88 (1) 5,247,240 (4) I By Ronin Capital, LLC
Common Stock 08/10/2016   S   10,500 D $ 21.725 (2) 5,236,740 (4) I By Ronin Capital, LLC
Common Stock 08/11/2016   S   10,000 D $ 22.01 (3) 5,226,740 (4) I By Ronin Capital, LLC
Common Stock               7,500 D  
Common Stock               2,000,000 I By Ronin Trading, LLC

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

Reporting Owners

Reporting Owner Name / Address Relationships
 Director  10% Owner  Officer  Other
STAFFORD JOHN S III
350 N. ORLEANS STREET
SUITE 2N
CHICAGO, IL 60654-1975		     X    
Ronin Capital, LLC
350 N. ORLEANS STREET
SUITE 2N
CHICAGO, IL 60654-1975		     X    

Signatures

 /s/ John S. Stafford, III   08/11/2016
**Signature of Reporting Person Date
 /s/ Agnes Burda, authorized signatory   08/11/2016
**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) This transaction was executed in multiple trades at prices ranging from $21.86 to $21.90. The price reported above reflects the average purchase price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transactions were effected.
(2) This transaction was executed in multiple trades at prices ranging from $21.54 to $21.91. The price reported above reflects the average purchase price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transactions were effected.
(3) This transaction was executed in multiple trades at prices ranging from $21.97 to $22.05. The price reported above reflects the average purchase price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transactions were effected
(4) On April 29, 2016, John R. Stafford, III transferred 5,257,240 shares of the issuer's common stock to his Class C Capital Account at Ronin Capital, LLC ("Ronin Capital"), a limited liability company owned and managed by Mr. Stafford. Mr. Stafford is the indirect beneficial owner of all of the shares of common stock of the issuer held of record by Ronin Capital. The transfer on April 29, 2016 did not result in any change in Mr. Stafford's pecuniary interest in the securities but only a change in the form of ownership of the securities from direct to indirect, and was exempt from Section 16 of the Securities Exchange Act of 1934 pursuant to Rule 16a-13. Mr. Stafford's total direct and indirect holdings are being reported in this Form 4 to enable reconciliation to Mr. Stafford's previous Form 4 filings.

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