PLUG POWER INC — Director's Dealing 2017

May 15, 2017

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: PLUG POWER INC (PLUG)
CIK: 0001093691
Period of Report: 2017-05-10

Reporting Person: GRAVES GREGORY B (Director)

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2017-05-10	Common Stock Options	$2.15	A	69767	Acquired	2027-05-10	Common Stock (69767)	Direct

Footnotes

F1: Options to purchase Common Stock granted in accordance with Plug Power's 2011 Non-Employee Director Compensation Plan

F2: This option shall become fully vested on the one year anniversary of the date of grant.