EPAM Systems, Inc. — Director's Dealing 2015

May 22, 2015

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: EPAM Systems, Inc. (EPAM)
CIK: 0001352010
Period of Report: 2015-05-22

Reporting Person: Mosier Ginger (VP, General Counsel, Corp Sec)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2015-05-22	EPAM Common Stock	M	8928	$6.88	Acquired	13928	Direct
2015-05-22	EPAM Common Stock	M	3072	$16.80	Acquired	17000	Direct
2015-05-22	EPAM Common Stock	S	12000	$67.06	Disposed	5000	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2015-05-22	Employee Stock Option (right to buy)	$6.88	M	8928	Disposed	2020-08-13	EPAM Common Stock (8928.0)	Direct
2015-05-22	Employee Stock Option (right to buy)	$16.8	M	3072	Disposed	2022-03-19	EPAM Common Stock (3072.0)	Direct

Footnotes

F1: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $67.03 to $67.44, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote to this Form 4.

F2: The option, representing a right to purchase a total of 35,720 shares, became exercisable as to 25% of the shares on each of January 1, 2011, 2012, 2013 and 2014.

F3: The option, representing a right to purchase a total of 9,100 shares, became exercisable as to 25% of the shares on each of March 19, 2013, 2014 and 2015, and will become exercisable as to 25% of the shares on March 19, 2016.