Peraso Inc. — Director's Dealing 2011

May 11, 2011

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: MoSys, Inc. (mosy)
CIK: 0000890394
Period of Report: 2011-05-10

Reporting Person: RIORDAN THOMAS (Chief Operating Officer)

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2011-05-10	Option to purchase common stock	$6.06	A	400000	Acquired	2017-05-09	Common stock (400000)	Direct

Footnotes

F1: This option will vest as to 25% of the shares subject to the option on May 9, 2012 and as to 2.0833% of the shares subject to the option on the 9th day of each calendar month thereafter.