Peraso Inc. — Director's Dealing 2010

May 3, 2010

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: MoSys, Inc. (mosy)
CIK: 0000890394
Period of Report: 2010-04-30

Reporting Person: Perham Leonard charles (Director, CEO and President)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2010-04-30	Common stock	M	450000	$2.45	Acquired	725000	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2010-04-30	Option to purchase common stock	$2.45	M	450000	Acquired	2016-10-22	Common stock (450000)	Direct

Footnotes

F1: Shares vest in equal amounts monthly for two years at a rate of 4.167% per month