MERCURY SYSTEMS INC — Director's Dealing 2011

May 17, 2011

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: MERCURY COMPUTER SYSTEMS INC (MRCY)
CIK: 0001049521
Period of Report: 2011-05-16

Reporting Person: Speicher Charles A (VP, Controller, and CAO)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2011-05-16	Common Stock	A	2500	—	Acquired	27500	Direct

Footnotes

F1: These shares of restricted stock vest in four annual equal installments beginning on May 16, 2012.