MERCURY SYSTEMS INC — Director's Dealing 2015

May 28, 2015

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: MERCURY SYSTEMS INC (MRCY)
CIK: 0001049521
Period of Report: 2015-05-26

Reporting Person: THIBAUD DIDIER M C (President, MCE)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2015-05-26	Common Stock	M	12839	$8.62	Acquired	371954	Direct
2015-05-26	Common Stock	S	12839	$13.525	Disposed	359115	Direct
2015-05-27	Common Stock	M	18161	$8.62	Acquired	377276	Direct
2015-05-27	Common Stock	S	18161	$13.541	Disposed	359115	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2015-05-26	Non-Qualified Stock Option (Right to buy)	$8.62	M	12839	Disposed	2015-06-10	Common (12839)	Direct
2015-05-27	Non-Qualified Stock Option (Right to buy)	$8.62	M	18161	Disposed	2015-06-10	Common (18161)	Direct

Footnotes

F1: The exercise of the stock option and sale of the underlying shares reported herein was pursuant to a 10b5-1 trading plan for a stock option expiring on June 10, 2015. The Company's 2005 Stock Incentive Plan does not contain a net exercise feature for stock options and accordingly the option was exercised in full.

F2: Field N/A to this transaction but was completed to allow for electronic filing only.