Plug Power director receives stock and option grants

Plug Power director Mark J. Bonney received new equity awards.

Rhea-AI Filing Summary

Plug Power director Mark J. Bonney received new equity awards. On June 11, 2026, he was granted 39,753 shares of common stock as a restricted stock award under Plug Power Inc.’s 2021 Stock Option and Incentive Plan and Non-Employee Director Compensation Plan.

The restricted stock vests in full on the first anniversary of the grant date, subject to his continued board service. He also received stock options for 39,753 shares of common stock at an exercise price of $2.83 per share, expiring on June 11, 2036, which vest in full after one year. Following these grants, Bonney directly holds 262,766 common shares.

Insider Trade Summary

Grant/Award: 79,506 shares

Grant/Award 2 txns

Insider BONNEY MARK J

Role Director

Type	Security	Shares	Price	Value
Grant/Award	Stock Option (Right to Buy)	39,753	$0.00	$0.00
Grant/Award	Common Stock	39,753	$0.00	$0.00

Holdings After Transaction: Stock Option (Right to Buy) — 39,753 contracts (Direct); Common Stock — 262,766 shares (Direct)

Footnotes (3)

1. 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 first anniversary of the grant date, subject to the Reporting Person's continued service on such vesting date.
2. 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.
3. F3. The options shall vest in full on the first anniversary of the grant date, subject to the Reporting Person's continued service on such vesting date.

Key Figures

Restricted stock grant: 39,753 shares Stock options granted: 39,753 options Option exercise price: $2.83 per share +2 more

5 metrics

Restricted stock grant 39,753 shares Common stock award on June 11, 2026

Stock options granted 39,753 options Right to buy common stock on June 11, 2026

Option exercise price $2.83 per share Conversion or exercise price for options

Option expiration June 11, 2036 Expiration date of stock options

Shares held after transaction 262,766 shares Total common shares directly held by Bonney

Key Terms

restricted stock award, Stock Option (Right to Buy), Non-Employee Director Compensation Plan, 2021 Stock Option and Incentive Plan, +1 more

5 terms

restricted stock award financial

"Consists of a restricted stock award made pursuant to the Plug Power Inc. 2021 Stock Option and Incentive Plan"

A restricted stock award is company shares given to an employee or executive that cannot be sold or fully owned until certain conditions—like staying with the company for a set time or hitting performance targets—are met. Think of it as a gift that only becomes yours after you fulfill specific obligations; for investors, these awards matter because they can increase the total shares outstanding when they vest, reveal how management is being paid and motivated, and create potential selling pressure when restrictions lift.

Stock Option (Right to Buy) financial

"Stock Option (Right to Buy) with underlying security title Common Stock"

Non-Employee Director Compensation Plan financial

"in accordance with the Non-Employee Director Compensation Plan"

2021 Stock Option and Incentive Plan financial

"pursuant to the Plug Power Inc. 2021 Stock Option and Incentive Plan, as amended"

vesting financial

"The restricted stock shall vest in full on the first anniversary of the grant date"

Vesting is the process by which you earn full ownership of something, like company stock or a retirement benefit, over time. It’s like earning the right to keep a gift piece by piece the longer you stay with a company, making sure employees stay committed before they receive all the benefits.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Accepted by SEC EDGAR 06/16/2026 - 06:40 PM Learn about SEC filing dates

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

BONNEY MARK J

(Last) (First) (Middle)

C/O PLUG POWER INC.

125 VISTA BOULEVARD

(Street)

SLINGERLANDS NEW YORK 12159

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
PLUG POWER INC [ PLUG ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director		10% Owner
	Officer (give title below)		Other (specify below)

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
06/11/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	06/11/2026		A		39,753(1)	A	$0.00	262,766	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Stock Option (Right to Buy)(2)	$2.83	06/11/2026		A		39,753		(3)	06/11/2036	Common Stock	39,753	$0	39,753	D

Explanation of Responses:

1. 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 first anniversary of the grant date, subject to the Reporting Person's continued service on such vesting date.

2. 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.

3. The options shall vest in full on the first anniversary of the grant date, subject to the Reporting Person's continued service on such vesting date.

	/s/ Gerard L. Conway Jr., Attorney-in-Fact	06/16/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)