Plug Power grants Andrew Marsh 101,699 stock options

The options vest in three equal annual installments beginning on the grant's first anniversary, subject to Andrew Marsh's continued service.

Rhea-AI Filing Summary

Plug Power Inc. (PLUG) director Andrew Marsh was granted 101,699 stock options on September 30, 2026. The options have a $1.94-per-share exercise price and expire September 30, 2036. They vest in three equal annual installments beginning on the grant's first anniversary, subject to his continued service. The award was made under the company's 2021 Stock Option and Incentive Plan, as amended, and the Transitional Consulting Agreement provides for quarterly equity awards during its term.

Insider Trade Summary

Grant/Award: 101,699 shares

Grant/Award 1 txn

Insider Marsh Andrew

Role Director

Type	Security	Shares	Price	Value
Grant/Award	Stock Option (Right to Buy) F1, F2	101,699	$0.00	$0.00

Holdings After Transaction: Stock Option (Right to Buy) — 101,699 contracts (Direct)

Footnotes (2)

1. F1. Awarded pursuant to Plug Power Inc.'s 2021 Stock Option and Incentive Plan, as amended.
2. F2. 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

Stock options awarded: 101,699 stock options Exercise price: $1.94 per share Vesting schedule: Three equal annual installments +1 more

4 metrics

Stock options awarded 101,699 stock options Granted September 30, 2026

Exercise price $1.94 per share For the stock options granted September 30, 2026

Vesting schedule Three equal annual installments Beginning on the grant's first anniversary, subject to continued service

Option expiration September 30, 2036 For the stock options granted September 30, 2026

Key Terms

Stock Option (Right to Buy), vest, Transitional Consulting Agreement

3 terms

Stock Option (Right to Buy) financial

"Stock Option (Right to Buy)"

vest technical

"shall vest in three equal annual installments"

A vest is the process by which an employee earns the right to receive certain benefits or ownership interests, such as stock or retirement funds, over time. It’s similar to earning a reward gradually, ensuring that the benefit becomes fully yours only after a set period or meeting specific conditions. This makes it important for investors because it determines when they can actually claim or use those benefits.

Transitional Consulting Agreement technical

"pursuant to the previously disclosed Transitional Consulting Agreement"

FAQ

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

How many stock options did PLUG director Andrew Marsh receive?

Andrew Marsh was granted 101,699 stock options on September 30, 2026, with an exercise price of $1.94 per share.

Why was Andrew Marsh awarded PLUG stock options?

The options were issued under the previously disclosed Transitional Consulting Agreement, which entitles Andrew Marsh to a quarterly equity award during the agreement's term.

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

Form 4 Insider Transactions: What Each Field Means →

See more from StockTitan in Google Search and AI answers. Adds StockTitan as a preferred source · opens Google

Add on Google Not now

Available on EDGAR 10/02/2026 - 05:04 PM Accepted by SEC EDGAR 10/02/2026 - 05:03 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^*

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)
09/30/2026

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

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)(1)	$1.94	09/30/2026		A		101,699		(2)	09/30/2036	Common Stock	101,699	$0.00	101,699	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 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	10/02/2026
	** 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)