PLUG · Plug Power Inc

Compensation awarded to directors pursuant to Plug Power Inc.'s Non-Employee Director Compensation Plan.

Compensation awarded to directors pursuant to Plug Power Inc.'s Non-Employee Director Compensation Plan.

Compensation awarded to directors pursuant to Plug Power Inc.'s Non-Employee Director Compensation Plan.

Compensation awarded to directors pursuant to Plug Power Inc.'s Non-Employee Director Compensation Plan.

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

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.

Consists of a restricted stock award made pursuant to the Plug Power Inc. 2021 Stock Option and Incentive Plan, as amended. The restricted shall vest in three equal annual installments following the grant date, subject to the Reporting Person's continued service on each such vesting date.

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

The shares underlying this stock option shall vest in three equal annual installments following the grant date, subject to the Reporting Person's continued service on each such vesting date.

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

The shares underlying this stock option shall vest in three equal annual installments following the grant date, subject to the Reporting Person's continued service on each such vesting date.

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

The shares underlying this stock option shall vest in three equal annual installments following the grant date, subject to the Reporting Person's continued service on each such vesting date.

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

The shares underlying this stock option shall vest in three equal annual installments following the grant date, subject to the Reporting Person's continued service on each such vesting date.

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

The shares underlying this stock option shall vest in three equal annual installments following the grant date, subject to the Reporting Person's continued service on each such vesting date.

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

The shares underlying this stock option shall vest in three equal annual installments following the grant date, subject to the Reporting Person's continued service on each such vesting date.

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

The shares underlying this stock option shall vest in three equal annual installments following the grant date, subject to the Reporting Person's continued service on each such vesting date.

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

The shares underlying this stock option shall vest in three equal annual installments following the grant date, subject to the Reporting Person's continued service on each such vesting date.

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

The shares underlying this stock option shall vest in three equal annual installments following the grant date, subject to the Reporting Person's continued service on each such vesting date.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

These sales were effected by the Reporting Person pursuant to a Rule 10b5-1 trading plan adopted on March 9, 2026.

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $3.17 to $3.33, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range.

Compensation awarded to directors pursuant to Plug Power Inc.'s Non-Employee Director Compensation Plan.

Compensation awarded to directors pursuant to Plug Power Inc.'s Non-Employee Director Compensation Plan.

The Reporting Person's total holdings were previously reported as 930,546 shares. Such amount was overstated because prior reports reflected gross shares of common stock received as compensation pursuant to the Reporting Person's election to receive shares in lieu of cash compensation rather than net shares received after withholding for taxes. The Reporting Person's holdings have been revised to reflect net shares received after withholding for taxes, resulting in a reduction of 80,856 shares to 849,690 shares. After giving effect to the transaction reported herein, the Reporting Person's total holdings are 853,378 shares. This correction relates solely to prior reporting and does not reflect any additional or previously unreported transactions by the Reporting Person.

Compensation awarded to directors pursuant to Plug Power Inc.'s Non-Employee Director Compensation Plan.

Compensation awarded to directors pursuant to Plug Power Inc.'s Non-Employee Director Compensation Plan.

Compensation awarded to directors pursuant to Plug Power Inc.'s Non-Employee Director Compensation Plan.

Compensation awarded to directors pursuant to Plug Power Inc.'s Non-Employee Director Compensation Plan.

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

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.

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

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.

These sales were effected by the Reporting Person pursuant to a Rule 10b5-1 trading plan adopted on June 13, 2025.

Compensation awarded to directors pursuant to Plug Power Inc.'s Non-Employee Director Compensation Plan.

Compensation awarded to directors pursuant to Plug Power Inc.'s Non-Employee Director Compensation Plan.

Compensation awarded to directors pursuant to Plug Power Inc.'s Non-Employee Director Compensation Plan.

Compensation awarded to directors pursuant to Plug Power Inc.'s Non-Employee Director Compensation Plan.

Compensation awarded to directors pursuant to Plug Power Inc.'s Non-Employee Director Compensation Plan.

Compensation awarded to directors pursuant to Plug Power Inc.'s Non-Employee Director Compensation Plan.

Compensation awarded to directors pursuant to Plug Power Inc.'s Non-Employee Director Compensation Plan.

Compensation awarded to directors pursuant to Plug Power Inc.'s Non-Employee Director Compensation Plan.

This purchase was effected by the Reporting Person pursuant to a Rule 10b5-1 trading plan adopted on March 13, 2025.

These sales were effected by the Reporting Person pursuant to a Rule 10b5-1 trading plan adopted on June 13, 2025.

Shares issued pursuant to a previously disclosed executive compensation program, pursuant to which the Reporting Person elected to receive payment of a portion of his base salary and bonus for the fiscal year ending December 31, 2025 in shares of the Issuer's common stock issued under the Plug Power Inc. 2021 Stock Option and Incentive Plan, as amended. The shares were fully vested upon grant.