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 * SULLIVAN JAMES   2. Issuer Name and Ticker or Trading Symbol MoSys, Inc. [MOSY] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner __X__ Officer (give title below) _____ Other (specify below) Chief Financial Officer (Last) (First) (Middle) 3301 OLCOTT STREET 3. Date of Earliest Transaction (Month/Day/Year) 08/23/2016 (Street) SANTA CLARA, CA 95054 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

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

Option to purchase common stock

$ 3.73

08/23/2016

D

190,000

(1)

01/18/2018

Common Stock

190,000

(2)

0

D

Option to purchase common stock

$ 3.54

08/23/2016

D

50,000

(3)

11/01/2017

Common Stock

50,000

(2)

0

D

Option to purchase common stock

$ 4.46

08/23/2016

D

36,250

(4)

06/06/2023

Common stock

36,250

(2)

0

D

Option to purchase common stock

$ 0.72

08/23/2016

D

157,856

(5)

08/23/2026

Common Stock

157,856

(2)

157,856

D

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
SULLIVAN JAMES 3301 OLCOTT STREET SANTA CLARA, CA 95054			Chief Financial Officer

Signatures

/s/ C. Leitner by power of attorney		08/25/2016
**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)	The canceled option provided for vesting as follows: 25% of the shares subject to the option on January 17, 2009 and as to 2.0833% of the shares subject to the option on the 17th day of each calendar month thereafter
(2)	On August 23, 2016, the Issuer canceled, pursuant to an option exchange program, options granted to the Reporting Person on 1/18/08, 11/1/11, and 6/6/13. In exchange for these options to cumulatively purchase 276,250 shares, the Reporting Person received a new option to purchase 157,856 shares at a lower exercise price.
(3)	The canceled option provided for vesting as follows: ratably over 48 months
(4)	The canceled option provided for vesting as follows: 6,250, 10,000, 10,000, 7,500, 2,500 shares in fiscal years 2013, 2014, 2015, 2016 and 2017, respectively
(5)	Option granted to replace cancelled options, pursuant to an option exchange program; vests ratably over 36 months.

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