Plug Power director receives new option grants

PLUG POWER INC director Andrew Marsh received two stock option awards as compensation.

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Form Type

Rhea-AI Filing Summary

PLUG POWER INC director Andrew Marsh received two stock option awards as compensation. On March 31, 2026, he was granted 87,260 options for Common Stock at an exercise price of $2.26 per share, expiring on March 31, 2036.

On March 2, 2026, he received a separate grant of 163,638 options at an exercise price of $1.81 per share, expiring on March 2, 2036. One grant is a one-time equity award vesting in full on March 2, 2027, and the other vests in three equal annual installments starting on the first anniversary of its grant.

Insider Trade Summary

Grant/Award: 250,898 shares

Grant/Award 2 txns

Insider Marsh Andrew

Role Director

Type	Security	Shares	Price	Value
Grant/Award	Stock Option (Right to Buy)	87,260	$0.00	$0.00
Grant/Award	Stock Option (Right to Buy)	163,638	$0.00	$0.00

Holdings After Transaction: Stock Option (Right to Buy) — 250,898 contracts (Direct)

Footnotes (3)

F1. Awarded pursuant to Plug Power Inc.'s 2021 Stock Option and Incentive Plan, as amended.
F2. Stock option issued pursuant to the previously disclosed Non-Executive Chairman Agreement, pursuant to which the Reporting Person received an initial, one-time equity award. The shares underlying this stock option shall vest in full on March 2, 2027, subject to the Reporting Person's continued service on such vesting date.
F3. Stock option issued pursuant to the previously disclosed Transitional Consulting Agreement, pursuant to which the Reporting Person is entitled to receive a quarterly equity award during the term of the agreement. The shares underlying this stock option shall vest in three equal annual installments commencing on the first anniversary of the grant date, subject to the Reporting Person's continued service through each applicable vesting date.

Key Figures

First option grant size: 87,260 options First option exercise price: $2.26 per share First option expiration: March 31, 2036 +5 more

8 metrics

First option grant size 87,260 options Stock Option (Right to Buy) granted March 31, 2026

First option exercise price $2.26 per share Exercise price for 87,260-option grant

First option expiration March 31, 2036 Expiration date for 87,260-option grant

Second option grant size 163,638 options Stock Option (Right to Buy) granted March 2, 2026

Second option exercise price $1.81 per share Exercise price for 163,638-option grant

Second option expiration March 2, 2036 Expiration date for 163,638-option grant

Vesting date one-time award March 2, 2027 Full vesting date for initial one-time equity award

Installment vesting schedule 3 annual installments For 87,260-option grant starting first anniversary of grant

Key Terms

Stock Option (Right to Buy), 2021 Stock Option and Incentive Plan, Non-Executive Chairman Agreement, Transitional Consulting Agreement, +1 more

5 terms

Stock Option (Right to Buy) financial

"security_title: Stock Option (Right to Buy)"

2021 Stock Option and Incentive Plan financial

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

Non-Executive Chairman Agreement financial

"Stock option issued pursuant to the previously disclosed Non-Executive Chairman Agreement"

Transitional Consulting Agreement financial

"Stock option issued pursuant to the previously disclosed Transitional Consulting Agreement"

equity award financial

"received an initial, one-time equity award"

An equity award is a form of pay where a company gives employees, executives or other stakeholders the right to own or buy company shares—either immediately or after meeting certain conditions. Think of it like receiving slices of the company pie now or coupons to claim slices later; it matters to investors because it affects ownership dilution, executive incentives and reported compensation costs, and signals how management is being rewarded and retained.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What did PLUG director Andrew Marsh report in this Form 4 filing?

Andrew Marsh reported receiving two stock option awards from Plug Power as compensation. The grants cover 87,260 and 163,638 shares of Common Stock, with no open-market purchases or sales disclosed in this filing.

How many Plug Power options did Andrew Marsh receive in the latest grants for PLUG?

Andrew Marsh received 87,260 stock options in one grant and 163,638 stock options in another. Both relate to Plug Power Common Stock and were reported as compensation awards rather than market transactions involving cash purchases or sales.

What are the exercise prices and expirations of Andrew Marsh’s PLUG stock options?

One Plug Power option grant has an exercise price of $2.26 per share and expires March 31, 2036. The other has a $1.81 exercise price and expires March 2, 2036, giving a long-dated window to exercise the awards.

How do Andrew Marsh’s new Plug Power option awards vest?

The 163,638-share option is an initial one-time equity award that vests fully on March 2, 2027. The 87,260-share option vests in three equal annual installments starting on the first anniversary of its grant, subject to continued service.

Were Andrew Marsh’s PLUG option grants tied to specific agreements?

Yes. One option grant was made under Plug Power’s 2021 Stock Option and Incentive Plan. The larger grant was issued under a Non-Executive Chairman Agreement, and the other under a Transitional Consulting Agreement providing quarterly equity awards during its term.

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

Form 4 Insider Transactions: What Each Field Means →

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Accepted by SEC EDGAR 06/16/2026 - 06:54 PM

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^*

Marsh Andrew

(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)
03/02/2026

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)
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	Amount	(A) or (D)	Price		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)

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)
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)	Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	8. Price of Derivative Security (Instr. 5)		10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
Stock Option (Right to Buy)⁽¹⁾	$1.81	03/02/2026		A		163,638		⁽²⁾	03/02/2036	Common Stock	163,638	$0.00	163,638	D
Stock Option (Right to Buy)⁽¹⁾	$2.26	03/31/2026		A		87,260		⁽³⁾	03/31/2036	Common Stock	87,260	$0.00	87,260	D

Explanation of Responses:

1. Awarded pursuant to Plug Power Inc.'s 2021 Stock Option and Incentive Plan, as amended.

2. Stock option issued pursuant to the previously disclosed Non-Executive Chairman Agreement, pursuant to which the Reporting Person received an initial, one-time equity award. The shares underlying this stock option shall vest in full on March 2, 2027, subject to the Reporting Person's continued service on such vesting date.

3. Stock option issued pursuant to the previously disclosed Transitional Consulting Agreement, pursuant to which the Reporting Person is entitled to receive a quarterly equity award during the term of the agreement. The shares underlying this stock option shall vest in three equal annual installments commencing on the first anniversary of the grant date, subject to the Reporting Person's continued service through each applicable 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)

Source: View Original Filing on SEC EDGAR