Conway Gerard L JR

SEC source: 0001104659-26-078981 · tm2619323-3_4seq1.xml · derivative · entry 2

Conway Gerard L JR · CIK 0001308706 · Gen. Coun, Corp Sec., Exec. VP

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 362,694

Underlying: Common Stock · 362,694 shares

Expires 2036-06-25

F1 · security: Awarded pursuant to Plug Power Inc.'s 2021 Stock Option and Incentive Plan, as amended.

F2 · derivative.exercise_date: 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.

SEC source: 0001104659-26-078981 · tm2619323-3_4seq1.xml · derivative · entry 1

Conway Gerard L JR · CIK 0001308706 · Gen. Coun, Corp Sec., Exec. VP

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 357,143

Underlying: Common Stock · 357,143 shares

Expires 2036-06-25

F1 · security: Awarded pursuant to Plug Power Inc.'s 2021 Stock Option and Incentive Plan, as amended.

F2 · derivative.exercise_date: 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.

SEC source: 0001104659-25-088373 · tm2525594-1_4seq1.xml · derivative · entry 1

Conway Gerard L JR · CIK 0001308706 · Gen. Coun, Corp Sec., Exec. VP

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,000,000

Underlying: Common Stock · 1,000,000 shares

Expires 2035-09-04

F1 · security: Awarded pursuant to Plug Power Inc.'s 2021 Stock Option and Incentive Plan, as amended.

F2 · derivative.exercise_date: 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.

SEC source: 0001104659-25-045528 · tm2514240-4_4seq1.xml · nonDerivative · entry 1

Conway Gerard L JR · CIK 0001308706 · Gen. Coun, Corp Sec., Exec. VP

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 259,482

F1 · kind: Tendered to Issuer to satisfy tax withholding obligations of the Reporting Person incurred in connection with the vesting of the Reporting Person's restricted stock awards.

F2 · price: Pursuant to the Plug Power Inc. 2021 Stock Option and Incentive Plan, as amended, each share was tendered to Issuer at the price per share on the closing date of May 2, 2025.

SEC source: 0001104659-24-115924 · tm2427931-1_4seq1.xml · nonDerivative · entry 1

Conway Gerard L JR · CIK 0001308706 · Gen. Coun, Corp Sec., Exec. VP

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 275,670

F1 · kind: Tendered to Issuer to satisfy tax withholding obligations of the Reporting Person incurred in connection with the vesting of the Reporting Person's restricted stock awards.

F2 · price: Pursuant to the Plug Power Inc. 2021 Stock Option and Incentive Plan, as amended, each share was tendered to Issuer at the price per share on the closing date of November 5, 2024.

SEC source: 0001104659-24-087831 · tm2421321-2_4seq1.xml · nonDerivative · entry 2

Conway Gerard L JR · CIK 0001308706 · Gen. Coun, Corp Sec., Exec. VP

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 290,280

F1 · kind: Tendered to Issuer to satisfy tax withholding obligations of the Reporting Person incurred in connection with the vesting of the Reporting Person's restricted stock awards.

F3 · price: Pursuant to the Plan, each share was tendered to Issuer at the price per share on the closing date of August 7, 2024.

SEC source: 0001104659-24-060589 · tm2414304-1_4seq1.xml · nonDerivative · entry 1

Conway Gerard L JR · CIK 0001308706 · Gen. Coun, Corp Sec., Exec. VP

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 319,499

F1 · kind: Consists of a restricted stock award made pursuant to the Plug Power Inc. 2021 Stock Option and Incentive Plan, as amended. The restricted stock vests as follows: 25% of the shares were immediately vested upon grant, and the remaining shares shall vest in equal installments on each of August 8, 2024, November 6, 2024 and May 5, 2025, subject to the Reporting Person's continued service on each such vesting date.

SEC source: 0001104659-24-087831 · tm2421321-2_4seq1.xml · nonDerivative · entry 1

Conway Gerard L JR · CIK 0001308706 · Gen. Coun, Corp Sec., Exec. VP

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 304,889

F1 · kind: Tendered to Issuer to satisfy tax withholding obligations of the Reporting Person incurred in connection with the vesting of the Reporting Person's restricted stock awards.

F2 · price: Pursuant to the Plug Power Inc. 2021 Stock Option and Incentive Plan, as amended (the "Plan"), each share was tendered to Issuer at the price per share on the closing date of May 8, 2024.

SEC source: 0001104659-24-054963 · tm2413131-5_4seq1.xml · derivative · entry 1

Conway Gerard L JR · CIK 0001308706 · Gen. Coun, Corp Sec., Exec. VP

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 750,000

Underlying: Common Stock · 750,000 shares

Expires 2031-04-26

F1 · security: Awarded pursuant to Plug Power Inc.'s 2021 Stock Option and Incentive Plan, as amended.

F2 · derivative.exercise_date: 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; provided, however, that 375,000 shares underlying such option shall vest only if the daily volume weighted average price of the Company's common stock during any 30 consecutive trading day period ("VWAP") equals or exceeds $7.50 prior to April 30, 2025.

SEC source: 0001104659-23-106506 · tm2327421-3_4seq1.xml · nonDerivative · entry 1

Conway Gerard L JR · CIK 0001308706 · Gen. Coun, Corp Sec., Exec. VP

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 200,365

F1 · kind: Tendered to Issuer to satisfy tax withholding obligations of the Reporting Person incurred in connection with the vesting of the Reporting Person's restricted stock awards.

F2 · price: Pursuant to the Plug Power Inc. Third Amended and Restated 2011 Stock Option and Incentive Plan, each share was tendered to Issuer at the price per share on the closing date of September 27, 2023.

SEC source: 0001104659-23-066655 · tm2317471-5_4seq1.xml · derivative · entry 1

Conway Gerard L JR · CIK 0001308706 · Gen. Coun, Corp Sec. & EVP

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 750,000

Underlying: Common Stock · 750,000 shares

Expires 2030-05-18

F1 · security: Awarded pursuant to Plug Power Inc.'s 2021 Stock Option and Incentive Plan, as amended.

F2 · derivative.exercise_date: Up to one-third (1/3) of the shares underlying the performance stock options will vest and become exercisable on each of the first three anniversaries of the grant date, provided that the daily volume weighted average price ("VWAP") of the Company's common stock during any 30 consecutive trading day period in the three year performance period following the grant date of the stock options equals or exceeds certain levels.

F3 · derivative.exercise_date: One-third (1/3) of the shares underlying the performance stock options will be deemed to have satisfied the performance-based vesting and will be eligible to vest over time if the VWAP during any 30 consecutive trading day period equals $9.84; an additional one-third (1/3) of the shares underlying the options will be deemed to have satisfied the performance-based vesting and will be eligible to vest over time if the VWAP during any 30 consecutive trading day period equals $11.81; and the remaining one-third (1/3) of the shares underlying the options will be deemed to have satisfied the performance-based vesting and will be eligible to vest over time if the VWAP during any 30 consecutive trading day period equals or exceeds $13.77.

F4 · derivative.exercise_date: There will be no interpolation for the performance stock option if the VWAP falls between any two stock price hurdles. Failure to achieve any of the stock price hurdles applicable to a performance stock option during the three-year performance period will result in applicable options being un-exercisable. The performance-based stock options have a maximum term of seven years from the grant date.

SEC source: 0001104659-22-124237 · tm2231922-1_4seq1.xml · nonDerivative · entry 2

Conway Gerard L JR · CIK 0001308706 · Gen. Coun, Corp Sec., Exec. VP

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 228,978

F1 · kind: Tendered to Issuer to satisfy tax withholding obligations of the Reporting Person incurred in connection with the vesting of the Reporting Person's restricted stock award.

F5 · price: Pursuant to the Plug Power Inc. Third Amended and Restated 2011 Stock Option and Incentive Plan, each share was tendered to Issuer at the price per share on the closing date of September 27, 2022, which is the date prior to the date withholding was effected.

SEC source: 0001104659-22-124237 · tm2231922-1_4seq1.xml · nonDerivative · entry 1

Conway Gerard L JR · CIK 0001308706 · Gen. Coun, Corp Sec., Exec. VP

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 257,591

F1 · kind: Tendered to Issuer to satisfy tax withholding obligations of the Reporting Person incurred in connection with the vesting of the Reporting Person's restricted stock award.

F2 · kind: The initial grant of the restricted stock award was reported on a Form 4 filed on August 21, 2019, but was inadvertently disclosed as a restricted stock unit award instead of a restricted stock award.

F3 · price: Pursuant to the Plug Power Inc. Third Amended and Restated 2011 Stock Option and Incentive Plan, each share was tendered to Issuer at the price per share on the closing date of August 18, 2022, which is the date prior to the date withholding was effected.

F4 · balance_after: The total Amount of Securities Beneficially Owned in Table I, Column 5 reflects the addition of 66,667 shares of the restricted stock award that was previously reported inadvertently on Table II as part of a grant of 200,000 restricted stock units on the Form 4 filed on August 21, 2019.

SEC source: 0001104659-22-054629 · tm2214070-1_4seq1.xml · nonDerivative · entry 1

Conway Gerard L JR · CIK 0001308706 · Gen. Coun, Corp Sec., Sr. VP

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 223,625

F1 · kind: Tendered to Issuer to satisfy tax withholding obligations of the Reporting Person incurred in connection with the vesting of the Reporting Person's restricted stock award. The initial grant of the restricted stock award was reported on a Form 4 filed on September 30, 2020, but was inadvertently described in the accompanying footnote as a restricted stock unit award instead of a restricted stock award.

SEC source: 0001104659-21-136330 · tm2131018-1_4seq1.xml · derivative · entry 1

Conway Gerard L JR · CIK 0001308706 · Gen. Coun, Corp Sec., Sr. VP

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,800,000

Underlying: Common Stock · 1,800,000 shares

Expires 2028-09-22

F1 · security: Awarded pursuant to Plug Power's 2021 Stock Option and Incentive Plan.

F2 · derivative.exercise_date: Up to one-third (1/3) of the shares underlying the performance stock options will vest and become exercisable on each of the first three anniversaries of the grant date, provided that the daily volume weighted average price of the Company's common stock during any 30 consecutive trading day period in the three year performance period following the grant date of the stock options ("VWAP") equals or exceeds certain levels. 25% of the shares underlying the performance stock options will be deemed to have satisfied the performance-based vesting and will be eligible to vest over time if the VWAP equals $35; an additional 25% of the shares underlying the options will be deemed to have satisfied the performance-based vesting and will be eligible to vest over time if the VWAP equals $50; and the remaining 50% of the shares underlying the options will be deemed to have satisfied the performance-based vesting and will be eligible to vest over time if the VWAP equals or exceeds $100.

F3 · derivative.exercise_date: If the VWAP falls between two of the stock price hurdles, an incremental number of shares underlying the options will become exercisable based on linear interpolation in $1 increments. Failure to achieve any of the stock price hurdles applicable to a performance stock option during the three-year performance period will result in applicable options being un-exercisable. The performance-based stock options have a maximum term of seven years from the grant date.

SEC source: 0001104659-21-111561 · tm2126655-1_4seq1.xml · derivative · entry 3

Conway Gerard L JR · CIK 0001308706 · Gen. Coun, Corp Sec., Sr. VP

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 66,667 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Each restricted stock unit is the equivalent of one share of Plug Power Inc. common stock.

F3 · derivative.exercise_date: On August 28, 2018, the Reporting Person was granted 200,000 restricted stock units, vesting in three substantially equal annual installments beginning on the first anniversary of the grant date.

F3 · derivative.expiration_date: On August 28, 2018, the Reporting Person was granted 200,000 restricted stock units, vesting in three substantially equal annual installments beginning on the first anniversary of the grant date.

SEC source: 0001104659-21-111561 · tm2126655-1_4seq1.xml · nonDerivative · entry 2

Conway Gerard L JR · CIK 0001308706 · Gen. Coun, Corp Sec., Sr. VP

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 253,451

F2 · kind: Tendered to Issuer to satisfy tax withholding obligations of the Reporting Person incurred in connection with the vesting of the Reporting Person's restricted stock unit awards.

SEC source: 0001104659-21-111561 · tm2126655-1_4seq1.xml · nonDerivative · entry 1

Conway Gerard L JR · CIK 0001308706 · Gen. Coun, Corp Sec., Sr. VP

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 287,538

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: Each restricted stock unit is the equivalent of one share of Plug Power Inc. common stock.

SEC source: 0001104659-21-108694 · tm2125715-1_4seq1.xml · derivative · entry 3

Conway Gerard L JR · CIK 0001308706 · Gen Counsel, Corp Sec, Sr VP

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 66,667

Underlying: Common Stock · 66,666 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Each restricted stock unit is the equivalent of one share of Plug Power Inc. common stock.

F3 · derivative.exercise_date: On August 19, 2019, the Reporting Person was granted 200,000 restricted stock units, vesting in three substantially equal annual installments beginning on the first anniversary of the grant date.

F3 · derivative.expiration_date: On August 19, 2019, the Reporting Person was granted 200,000 restricted stock units, vesting in three substantially equal annual installments beginning on the first anniversary of the grant date.

SEC source: 0001104659-21-108694 · tm2125715-1_4seq1.xml · nonDerivative · entry 2

Conway Gerard L JR · CIK 0001308706 · Gen Counsel, Corp Sec, Sr VP

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 220,871

F2 · kind: Tendered to Issuer to satisfy tax withholding obligations of the Reporting Person incurred in connection with the vesting of the Reporting Person's restricted stock unit awards.

SEC source: 0001104659-21-108694 · tm2125715-1_4seq1.xml · nonDerivative · entry 1

Conway Gerard L JR · CIK 0001308706 · Gen Counsel, Corp Sec, Sr VP

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 252,185

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: Each restricted stock unit is the equivalent of one share of Plug Power Inc. common stock.

SEC source: 0001104659-21-003063 · tm212824-2_4seq1.xml · derivative · entry 3

Conway Gerard L JR · CIK 0001308706 · Gen Counsel, Corp Sec, Sr VP

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 66,667

Underlying: Common Stock · 33,333 shares

Expires 2029-08-19

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · derivative.exercise_date: 33,333 options vested on August 19, 2020, 33,333 options vest on August 19, 2021 and 33,334 options vest on August 19, 2022.

SEC source: 0001104659-21-003063 · tm212824-2_4seq1.xml · nonDerivative · entry 2

Conway Gerard L JR · CIK 0001308706 · Gen Counsel, Corp Sec, Sr VP

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 185,519

F1 · kind: Shares sold pursuant to a pre-established 10b5-1 trading plan effective as of March 16, 2020.

SEC source: 0001104659-21-003063 · tm212824-2_4seq1.xml · nonDerivative · entry 1

Conway Gerard L JR · CIK 0001308706 · Gen Counsel, Corp Sec, Sr VP

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 218,852

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0001104659-21-002569 · tm212245-2_4seq1.xml · derivative · entry 3

Conway Gerard L JR · CIK 0001308706 · Gen Counsel, Corp Sec, Sr VP

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 66,667

Underlying: Common Stock · 33,333 shares

Expires 2029-08-19

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F3 · derivative.exercise_date: 33,333 options vested on August 19, 2020, 33,333 options vest on August 19, 2021 and 33,334 options vest on August 19, 2022.

SEC source: 0001104659-21-002569 · tm212245-2_4seq1.xml · nonDerivative · entry 2

Conway Gerard L JR · CIK 0001308706 · Gen Counsel, Corp Sec, Sr VP

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 185,519

F1 · kind: Shares sold pursuant to a pre-established 10b5-1 trading plan effective as of March 16, 2020.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $43.66 to $44.42, 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.

SEC source: 0001104659-21-002569 · tm212245-2_4seq1.xml · nonDerivative · entry 1

Conway Gerard L JR · CIK 0001308706 · Gen Counsel, Corp Sec, Sr VP

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 218,852

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0001104659-21-001674 · tm211870-1_4seq1.xml · derivative · entry 6

Conway Gerard L JR · CIK 0001308706 · Gen Counsel, Corp Sec, Sr VP

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 108,333 shares

Expires 2027-08-31

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F6 · derivative.exercise_date: The stock option granted to the Reporting Person is fully vested and exercisable as of the date hereof.

SEC source: 0001104659-21-001674 · tm211870-1_4seq1.xml · nonDerivative · entry 5

Conway Gerard L JR · CIK 0001308706 · Gen Counsel, Corp Sec, Sr VP

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 185,519

F1 · kind: Shares sold pursuant to a pre-established 10b5-1 trading plan effective as of March 16, 2020.

F5 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $34.19 to $34.90, 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.

SEC source: 0001104659-21-001674 · tm211870-1_4seq1.xml · nonDerivative · entry 4

Conway Gerard L JR · CIK 0001308706 · Gen Counsel, Corp Sec, Sr VP

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 191,119

F1 · kind: Shares sold pursuant to a pre-established 10b5-1 trading plan effective as of March 16, 2020.

F4 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $33.19 to $34.17, 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.

SEC source: 0001104659-21-001674 · tm211870-1_4seq1.xml · nonDerivative · entry 3

Conway Gerard L JR · CIK 0001308706 · Gen Counsel, Corp Sec, Sr VP

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 197,219

F1 · kind: Shares sold pursuant to a pre-established 10b5-1 trading plan effective as of March 16, 2020.

F3 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $32.19 to $33.18, 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.

SEC source: 0001104659-21-001674 · tm211870-1_4seq1.xml · nonDerivative · entry 2

Conway Gerard L JR · CIK 0001308706 · Gen Counsel, Corp Sec, Sr VP

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 232,314

F1 · kind: Shares sold pursuant to a pre-established 10b5-1 trading plan effective as of March 16, 2020.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $31.19 to $32.18, 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.

SEC source: 0001104659-21-001674 · tm211870-1_4seq1.xml · nonDerivative · entry 1

Conway Gerard L JR · CIK 0001308706 · Gen Counsel, Corp Sec, Sr VP

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 293,852

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0001104659-20-110505 · a4.xml · derivative · entry 3

Conway Gerard L JR · CIK 0001308706 · Gen Counsel, Corp Sec, Sr VP

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 87,500

Underlying: Common Stock · 87,500 shares

Expires 2030-09-28

F2 · kind: Awarded pursuant to the Issuer's 2011 Stock Option and Incentive Plan.

F4 · derivative.exercise_date: On September 28, 2020, the Reporting Person was granted 87,500 stock options, vesting in three substantially equal installments beginning on the first anniversary of the grant date.

SEC source: 0001104659-20-110505 · a4.xml · derivative · entry 2

Conway Gerard L JR · CIK 0001308706 · Gen Counsel, Corp Sec, Sr VP

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 87,500

Underlying: Common Stock · 87,500 shares

Expires 2030-09-28

F2 · kind: Awarded pursuant to the Issuer's 2011 Stock Option and Incentive Plan.

F3 · derivative.exercise_date: On September 28, 2020, the Reporting Person was granted 87,500 stock options, vesting in three substantially equal installments beginning on the first anniversary of the grant date.

SEC source: 0001104659-20-110505 · a4.xml · nonDerivative · entry 1

Conway Gerard L JR · CIK 0001308706 · Gen Counsel, Corp Sec, Sr VP

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 185,519

F1 · kind: Consists of a restricted stock unit award made pursuant to the Issuer's 2011 Stock Option and Incentive Plan. The restricted stock units vest in three substantially equal installments beginning on the first anniversary of the grant date.

SEC source: 0001104659-20-103544 · a4.xml · nonDerivative · entry 1

Conway Gerard L JR · CIK 0001308706 · Gen Counsel, Corp Sec, Sr VP

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 10,519

F1 · kind: Shares sold pursuant to a pre-established 10b5-1 trading plan effective as of March 16, 2020.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $11.37 to $12.23, 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.

SEC source: 0001104659-20-101449 · a4.xml · derivative · entry 10

Conway Gerard L JR · CIK 0001308706 · Gen. Counsel, Corp Sec, Sr. VP

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 66,666

Underlying: Common Stock · 66,667 shares

Expires 2028-08-28

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F8 · derivative.exercise_date: On August 28, 2018, the Reporting Person was granted 200,000 stock options, vesting in three substantially equal annual installments beginning on the first anniversary of the grant date.

SEC source: 0001104659-20-101449 · a4.xml · derivative · entry 9

Conway Gerard L JR · CIK 0001308706 · Gen. Counsel, Corp Sec, Sr. VP

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 66,667

Underlying: Common Stock · 66,666 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Each restricted stock unit is the equivalent of one share of Plug Power Inc. common stock.

F7 · derivative.exercise_date: On August 28, 2018, the Reporting Person was granted 200,000 restricted stock units, vesting in three substantially equal annual installments beginning on the first anniversary of the grant date.

F7 · derivative.expiration_date: On August 28, 2018, the Reporting Person was granted 200,000 restricted stock units, vesting in three substantially equal annual installments beginning on the first anniversary of the grant date.

SEC source: 0001104659-20-101449 · a4.xml · nonDerivative · entry 7

Conway Gerard L JR · CIK 0001308706 · Gen. Counsel, Corp Sec, Sr. VP

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 45,871

F3 · kind: Shares sold pursuant to a pre-established 10b5-1 trading plan effective as of March 16, 2020.

F5 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $12.71 to $13.11, 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.

SEC source: 0001104659-20-101449 · a4.xml · nonDerivative · entry 6

Conway Gerard L JR · CIK 0001308706 · Gen. Counsel, Corp Sec, Sr. VP

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 112,538

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0001104659-20-101449 · a4.xml · nonDerivative · entry 5

Conway Gerard L JR · CIK 0001308706 · Gen. Counsel, Corp Sec, Sr. VP

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 45,871

F2 · kind: Tendered to Issuer to satisfy tax withholding obligations of the Reporting Person incurred in connection with the vesting of the Reporting Person's restricted stock unit awards.

SEC source: 0001104659-20-101449 · a4.xml · nonDerivative · entry 4

Conway Gerard L JR · CIK 0001308706 · Gen. Counsel, Corp Sec, Sr. VP

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 77,185

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: Each restricted stock unit is the equivalent of one share of Plug Power Inc. common stock.

SEC source: 0001104659-20-101449 · a4.xml · nonDerivative · entry 3

Conway Gerard L JR · CIK 0001308706 · Gen. Counsel, Corp Sec, Sr. VP

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 10,519

F3 · kind: Shares sold pursuant to a pre-established 10b5-1 trading plan effective as of March 16, 2020.

F4 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $12.73 to $13.41, 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.

SEC source: 0001104659-20-101449 · a4.xml · derivative · entry 8

Conway Gerard L JR · CIK 0001308706 · Gen. Counsel, Corp Sec, Sr. VP

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 133,333

Underlying: Common Stock · 66,667 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Each restricted stock unit is the equivalent of one share of Plug Power Inc. common stock.

F6 · derivative.exercise_date: On August 19, 2019, the Reporting Person was granted 200,000 restricted stock units, vesting in three substantially equal annual installments beginning on the first anniversary of the grant date.

F6 · derivative.expiration_date: On August 19, 2019, the Reporting Person was granted 200,000 restricted stock units, vesting in three substantially equal annual installments beginning on the first anniversary of the grant date.

SEC source: 0001104659-20-101449 · a4.xml · nonDerivative · entry 2

Conway Gerard L JR · CIK 0001308706 · Gen. Counsel, Corp Sec, Sr. VP

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 45,872

F2 · kind: Tendered to Issuer to satisfy tax withholding obligations of the Reporting Person incurred in connection with the vesting of the Reporting Person's restricted stock unit awards.

SEC source: 0001104659-20-101449 · a4.xml · nonDerivative · entry 1

Conway Gerard L JR · CIK 0001308706 · Gen. Counsel, Corp Sec, Sr. VP

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 77,186

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: Each restricted stock unit is the equivalent of one share of Plug Power Inc. common stock.

SEC source: 0001104659-20-079679 · a4.xml · derivative · entry 5

Conway Gerard L JR · CIK 0001308706 · Gen. Counsel, Corp Sec, Sr VP

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 250,000 shares

Expires 2024-07-24

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F4 · derivative.exercise_date: The stock option granted to the reporting person is fully vested and exercisable as of the date hereof.

SEC source: 0001104659-20-079679 · a4.xml · derivative · entry 4

Conway Gerard L JR · CIK 0001308706 · Gen. Counsel, Corp Sec, Sr VP

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 41,000 shares

Expires 2021-04-13

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F3 · derivative.exercise_price: This option was previously reported as covering 410,000 shares at an exercise price of $0.61 per share, but was adjusted to reflect a 1-for-10 reverse stock split that occurred on May 19, 2011.

F3 · shares: This option was previously reported as covering 410,000 shares at an exercise price of $0.61 per share, but was adjusted to reflect a 1-for-10 reverse stock split that occurred on May 19, 2011.

F4 · derivative.exercise_date: The stock option granted to the reporting person is fully vested and exercisable as of the date hereof.

F3 · derivative.underlying_shares: This option was previously reported as covering 410,000 shares at an exercise price of $0.61 per share, but was adjusted to reflect a 1-for-10 reverse stock split that occurred on May 19, 2011.

SEC source: 0001104659-20-079679 · a4.xml · nonDerivative · entry 3

Conway Gerard L JR · CIK 0001308706 · Gen. Counsel, Corp Sec, Sr VP

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 10,519

F1 · kind: Shares sold pursuant to a pre-established 10b5-1 trading plan effective as of March 16, 2020.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $7.90 to $8.08, 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.