Peraso Inc. — Director's Dealing 2012

May 21, 2012

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: MoSys, Inc. (mosy)
CIK: 0000890394
Period of Report: 2012-05-17

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

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2012-05-17	Common Stock	P	9585	$2.98	Acquired	1007085	Direct
2012-05-18	Common Stock	P	40415	$3	Acquired	1047500	Direct

Footnotes

F1: This price represents the weighted average purchase prices for multiple transactions reported on this line. The prices of the transactions reported on this line ranged from $2.94 to $3.00. Upon request by the SEC staff, the Issuer or a security holder of the Issuer, the Reporting Person will undertake to provide full information regarding the number of shares and prices for each transaction included in this footnote