MAUREEN O. HELMER - 03 Jul 2025 Form 4 Insider Report for PLUG POWER INC (PLUG)

Role: Director
Signature: /s/ Gerard L. Conway Jr., Attorney-in-Fact
Issuer symbol: PLUG
Transactions as of: 03 Jul 2025
Net transactions value: $0
Form type: 4
Filing time: 24 Jul 2025, 16:18:14 UTC
Previous filing: 03 Jul 2025
Next filing: 03 Oct 2025
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
HELMER MAUREEN O	Director	C/O PLUG POWER INC., 125 VISTA BOULEVARD, SLINGERLANDS	/s/ Gerard L. Conway Jr., Attorney-in-Fact	24 Jul 2025	0001279977

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	PLUG	Common Stock	Award	$0	+76,531	+28%	$0.000000	345,803	03 Jul 2025	Direct	F1

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
transaction	PLUG	Stock Option (Right to Buy)	Award	$0	+76,531		$0.000000	76,531	03 Jul 2025	Common Stock	76,531	$1.47	Direct	F2, F3

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	Consists of a restricted stock award made pursuant to the Plug Power Inc. 2021 Stock Option and Incentive Plan, as amended, in accordance with the Non-Employee Director Compensation Plan. The restricted stock shall vest in full on the earlier of (i) first anniversary of the grant date or (ii) the date of the next annual meeting which is at least fifty (50) weeks after the immediately preceding year's annual meeting.
F2	Stock option granted pursuant to the Plug Power Inc. 2021 Stock Option and Incentive Plan, as amended, in accordance with the Non-Employee Director Compensation Plan.
F3	The options shall vest in full on the earlier of (i) first anniversary of the grant date or (ii) the date of the next annual meeting which is at least fifty (50) weeks after the immediately preceding year's annual meeting.