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person · Reporting owner

WILLIS GARY K

Disclosed activity across 2 companies

Tapewire entity
37837
SEC CIK
0001121475

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Reported relationships

Latest disclosed role at each company.

CompanyLast reported asReport datePublished
PLUG POWER INCPLUG · Entity 4258DirectorJune 11, 2026June 16, 2026

Disclosed balances

About these balances

Latest available filing per company, not a reconstructed current portfolio. Matching sequences show the last reported balance with all source rows expandable; grouping alone does not establish account ownership. Do not add unresolved positions together. Filings may omit unchanged positions, and amendments may correct only part of an older disclosure. Jointly reported shares are not necessarily this owner's personal holdings.

PLUG POWER INC

Report date June 11, 2026 · Filed June 16, 2026

Security / awardOwnership accountDisclosed shares / unitsDisclosure context
Common StockSEC Table I · non-derivativeDirect730,107 Reported balance After 2026-06-11 transaction · row 1
1 source row

Row 1 · 2026-06-11 · Grant · Acquired 39,753 · Balance 730,107

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.

Stock Option (Right to Buy)SEC Table II · derivative / convertible security · Conversion / exercise price $2.83 · Expires 2036-06-11Direct39,753 Reported balance After 2026-06-11 transaction · row 2 Instrument identity requires review; Table II rows are not merged.
1 source row

Row 2 · 2026-06-11 · Grant · Acquired 39,753 · Balance 39,753

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.

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.

Filing footnotes · ownership attribution and instrument terms

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.

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.

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.

Past disclosures · reporting ended (1)

No longer tracked through insider filings. These historical balances do not imply present ownership or a zero position.

ROFIN SINAR TECHNOLOGIES INC

Report date November 07, 2016 · Filed November 07, 2016

Section 16 reporting ended · disclosed 2016-11-07. Current position is not established by this disclosure.

Security / awardOwnership accountDisclosed shares / unitsDisclosure context
RSTI Common StockSEC Table I · non-derivativeDirect0 Reported balance After 2016-11-07 transaction · row 1
1 source row

Row 1 · 2016-11-07 · Other · Disposed 54,000 · Balance 0

F1: Reflects disposition on November 7, 2016 pursuant to a merger agreement by and among Coherent, Inc., Rembrandt Merger Sub Corp., a wholly owned subsidiary of Coherent Inc., and Rofin-Sinar Technologies Inc. dated as of March 16, 2016 (the "Merger Agreement"). In accordance with the Merger Agreement, at the effective time of the Merger, each share of RSTI common stock was automatically converted into a right to receive $32.50 per share in cash.

Filing footnotes · ownership attribution and instrument terms

F1: Reflects disposition on November 7, 2016 pursuant to a merger agreement by and among Coherent, Inc., Rembrandt Merger Sub Corp., a wholly owned subsidiary of Coherent Inc., and Rofin-Sinar Technologies Inc. dated as of March 16, 2016 (the "Merger Agreement"). In accordance with the Merger Agreement, at the effective time of the Merger, each share of RSTI common stock was automatically converted into a right to receive $32.50 per share in cash.

Transaction history

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Purchases/sales include open-market and private transactions. Plan disclosure applies to the filing; individual rows may differ. “Not disclosed” is not “unplanned.”

The cutoff filters transaction history only. Company summaries and owner relationships show the latest available disclosures. Parser corrections can improve historical records.

Transaction dateCompanyActivity / securityShares / unitsReported priceReported valueDetails
July 01, 2019 Filed Jul 3, 2019 20:22 UTC PLUG POWER INC PLUG · Entity 4258 GrantPlug Power Common Stock 3,889 $2.25 $8,750.25
Disclosure

SEC source: 0001104659-19-039302 · a4.xml · nonDerivative · entry 1

WILLIS GARY K · CIK 0001121475 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 387,840

F1 · price: Compensation awarded to directors pursuant to Plug Power's 2011 Non-Employee Directors Compensation Plan.

Read SEC document
May 09, 2019 Filed Jul 2, 2019 00:00 UTC PLUG POWER INC PLUG · Entity 4258 GrantStock Option (right to buy) · Derivative 27,056 $0.00 Strike: $2.31 $0.00
Disclosure

SEC source: 0001104659-19-038781 · a4.xml · derivative · entry 2

WILLIS GARY K · CIK 0001121475 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 27,056

Underlying: Common Stock · 27,056 shares

Expires 2029-05-09

F2 · security: Options to purchase Common Stock granted in accordance with Plug Power's 2011 Non-Employee Directors Compensation Plan.

F3 · derivative.exercise_date: This option shall become fully vested on May 9, 2020.

Read SEC document
May 09, 2019 Filed Jul 2, 2019 00:00 UTC PLUG POWER INC PLUG · Entity 4258 GrantPlug Power Common Stock 27,056 $2.31 $62,499.36
Disclosure

SEC source: 0001104659-19-038781 · a4.xml · nonDerivative · entry 1

WILLIS GARY K · CIK 0001121475 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 383,951

F1 · price: Compensation awarded to directors pursuant to Plug Power's 2011 Non-Employee Directors Compensation Plan.

Read SEC document
April 01, 2019 Filed Apr 3, 2019 20:42 UTC PLUG POWER INC PLUG · Entity 4258 GrantPlug Power Common Stock 3,646 $2.40 $8,750.40
Disclosure

SEC source: 0001104659-19-019674 · a4.xml · nonDerivative · entry 1

WILLIS GARY K · CIK 0001121475 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 356,895

F1 · price: Compensation awarded to directors pursuant to Plug Power's 2011 Non-Employee Directors Compensation Plan.

Read SEC document
January 02, 2019 Filed Jan 4, 2019 21:21 UTC PLUG POWER INC PLUG · Entity 4258 GrantPlug Power Common Stock 7,056 $1.24 $8,749.44
Disclosure

SEC source: 0001104659-19-000806 · a4.xml · nonDerivative · entry 1

WILLIS GARY K · CIK 0001121475 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 353,249

F1 · price: Compensation awarded to directors pursuant to Plug Power's 2011 Non-Employee Directors Compensation Plan.

Read SEC document
October 01, 2018 Filed Oct 3, 2018 20:55 UTC PLUG POWER INC PLUG · Entity 4258 GrantPlug Power Common Stock 4,557 $1.92 $8,749.44
Disclosure

SEC source: 0001104659-18-060355 · a4.xml · nonDerivative · entry 1

WILLIS GARY K · CIK 0001121475 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 346,193

F1 · price: Compensation awarded to directors pursuant to Plug Power's 2011 Non-Employee Directors Compensation Plan.

Read SEC document
July 02, 2018 Filed Jul 5, 2018 20:28 UTC PLUG POWER INC PLUG · Entity 4258 GrantPlug Power Common Stock 4,332 $2.02 $8,750.64
Disclosure

SEC source: 0001104659-18-044032 · a4.xml · nonDerivative · entry 1

WILLIS GARY K · CIK 0001121475 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 341,636

F1 · price: Compensation awarded to directors pursuant to Plug Power's 2011 Non-Employee Directors Compensation Plan.

Read SEC document
May 16, 2018 Filed May 18, 2018 23:39 UTC PLUG POWER INC PLUG · Entity 4258 GrantCommon Stock Options · Derivative 29,621 $0.00 Strike: $2.11 $0.00
Disclosure

SEC source: 0001104659-18-034579 · a4.xml · derivative · entry 2

WILLIS GARY K · CIK 0001121475 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 29,621

Underlying: Common Stock · 29,621 shares

Expires 2028-05-16

F2 · security: Options to purchase Common Stock granted in accordance with Plug Power's 2011 Non-Employee Directors Compensation Plan.

F3 · derivative.exercise_date: This option shall become fully vested on May 16, 2019.

Read SEC document
May 16, 2018 Filed May 18, 2018 23:39 UTC PLUG POWER INC PLUG · Entity 4258 GrantPlug Power Common Stock 29,621 $2.11 $62,500.31
Disclosure

SEC source: 0001104659-18-034579 · a4.xml · nonDerivative · entry 1

WILLIS GARY K · CIK 0001121475 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 337,304

F1 · price: Compensation awarded to directors pursuant to Plug Power's 2011 Non-Employee Directors Compensation Plan.

Read SEC document
April 02, 2018 Filed Apr 4, 2018 19:32 UTC PLUG POWER INC PLUG · Entity 4258 GrantPlug Power Common Stock 4,630 $1.89 $8,750.70
Disclosure

SEC source: 0001104659-18-022407 · a4.xml · nonDerivative · entry 1

WILLIS GARY K · CIK 0001121475 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 307,683

F1 · price: Compensation awarded to directors pursuant to Plug Power's 2011 Non-Employee Directors Compensation Plan.

Read SEC document
January 02, 2018 Filed Jan 4, 2018 21:00 UTC PLUG POWER INC PLUG · Entity 4258 GrantPlug Power Common Stock 3,708 $2.36 $8,750.88
Disclosure

SEC source: 0001104659-18-000765 · a4.xml · nonDerivative · entry 1

WILLIS GARY K · CIK 0001121475 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 303,053

F1 · price: Compensation awarded to directors pursuant to Plug Power's 2011 Non-Employee Directors Compensation Plan.

Read SEC document
October 02, 2017 Filed Oct 10, 2017 20:28 UTC PLUG POWER INC PLUG · Entity 4258 GrantPlug Power Common Stock 3,352 $2.61 $8,748.72
Disclosure

SEC source: 0001104659-17-061580 · a4.xml · nonDerivative · entry 1

WILLIS GARY K · CIK 0001121475 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 299,345

F1 · price: Compensation awarded to directors pursuant to Plug Power's 2011 Non-Employee Directors Compensation Plan.

Read SEC document
July 03, 2017 Filed Sep 5, 2017 16:49 UTC PLUG POWER INC PLUG · Entity 4258 GrantPlug Power Common Stock 4,289 $2.04 $8,749.56
Disclosure

SEC source: 0001104659-17-055366 · a4.xml · nonDerivative · entry 1

WILLIS GARY K · CIK 0001121475 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 295,993

F1 · price: Quarterly Stock compensation awarded to directors pursuant to Plug Power's 2011 Non-Employee Directors Compensation Plan.

Read SEC document
June 28, 2017 Filed Jun 30, 2017 22:11 UTC PLUG POWER INC PLUG · Entity 4258 GrantCommon Stock Options · Derivative 29,343 $0.00 Strike: $2.13 $0.00
Disclosure

SEC source: 0001104659-17-043056 · a4.xml · derivative · entry 2

WILLIS GARY K · CIK 0001121475 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 29,343

Underlying: Common Stock · 29,343 shares

Expires 2027-06-28

F2 · security: Options to purchase Common Stock granted in accordance with Plug Power's 2011 Non-Employee Directors Compensation Plan.

F3 · derivative.exercise_date: This option shall become fully vested on June 28, 2018.

Read SEC document
June 28, 2017 Filed Jun 30, 2017 22:11 UTC PLUG POWER INC PLUG · Entity 4258 GrantPlug Power Common Stock 29,343 $2.13 $62,500.59
Disclosure

SEC source: 0001104659-17-043056 · a4.xml · nonDerivative · entry 1

WILLIS GARY K · CIK 0001121475 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 291,704

F1 · price: Compensation awarded to directors pursuant to Plug Power's 2011 Non-Employee Directors Compensation Plan.

Read SEC document
April 03, 2017 Filed Apr 5, 2017 20:34 UTC PLUG POWER INC PLUG · Entity 4258 GrantPlug Power Common Stock 6,341 $1.38 $8,750.58
Disclosure

SEC source: 0001104659-17-021697 · a4.xml · nonDerivative · entry 1

WILLIS GARY K · CIK 0001121475 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 262,361

F1 · price: Quarterly Stock compensation awarded to directors pursuant to Plug Power's 2011 Non-Employee Directors Compensation Plan.

Read SEC document
January 03, 2017 Filed Jan 5, 2017 21:18 UTC PLUG POWER INC PLUG · Entity 4258 GrantPlug Power Common Stock 7,292 $1.20 $8,750.40
Disclosure

SEC source: 0001104659-17-000926 · a4.xml · nonDerivative · entry 1

WILLIS GARY K · CIK 0001121475 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 256,020

F1 · price: Quarterly Stock compensation awarded to directors pursuant to Plug Power's 2011 Non-Employee Directors Compensation Plan.

Read SEC document
November 07, 2016 Filed Nov 7, 2016 15:43 UTC ROFIN SINAR TECHNOLOGIES INC RSTI · Entity 181267 OtherRSTI Common Stock 54,000 Not disclosed Not disclosed
Disclosure

SEC source: 0001019361-16-000131 · primary_doc.xml · nonDerivative · entry 1

WILLIS GARY K · CIK 0001121475 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

F1 · kind: Reflects disposition on November 7, 2016 pursuant to a merger agreement by and among Coherent, Inc., Rembrandt Merger Sub Corp., a wholly owned subsidiary of Coherent Inc., and Rofin-Sinar Technologies Inc. dated as of March 16, 2016 (the "Merger Agreement"). In accordance with the Merger Agreement, at the effective time of the Merger, each share of RSTI common stock was automatically converted into a right to receive $32.50 per share in cash.

F1 · price: Reflects disposition on November 7, 2016 pursuant to a merger agreement by and among Coherent, Inc., Rembrandt Merger Sub Corp., a wholly owned subsidiary of Coherent Inc., and Rofin-Sinar Technologies Inc. dated as of March 16, 2016 (the "Merger Agreement"). In accordance with the Merger Agreement, at the effective time of the Merger, each share of RSTI common stock was automatically converted into a right to receive $32.50 per share in cash.

Read SEC document
October 03, 2016 Filed Oct 4, 2016 14:54 UTC ROFIN SINAR TECHNOLOGIES INC RSTI · Entity 181267 GrantRofin-Sinar Technologies Inc. 3,000 $31.64 $94,920.00
Disclosure

SEC source: 0001019361-16-000122 · primary_doc.xml · nonDerivative · entry 1

WILLIS GARY K · CIK 0001121475 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 54,000

F1 · security: Indepedent Directors of Rofin-Sinar Technologies Inc. (RSTI) receive an annual grant of 3,000 shares of common stock from the RSTI Incentive Plan. The shares are valued at the closing price of the common stock on 10/3/2016, the first business date that they were authorized for release,or $31.64, and are 100% vested.

F1 · date: Indepedent Directors of Rofin-Sinar Technologies Inc. (RSTI) receive an annual grant of 3,000 shares of common stock from the RSTI Incentive Plan. The shares are valued at the closing price of the common stock on 10/3/2016, the first business date that they were authorized for release,or $31.64, and are 100% vested.

F1 · kind: Indepedent Directors of Rofin-Sinar Technologies Inc. (RSTI) receive an annual grant of 3,000 shares of common stock from the RSTI Incentive Plan. The shares are valued at the closing price of the common stock on 10/3/2016, the first business date that they were authorized for release,or $31.64, and are 100% vested.

F1 · shares: Indepedent Directors of Rofin-Sinar Technologies Inc. (RSTI) receive an annual grant of 3,000 shares of common stock from the RSTI Incentive Plan. The shares are valued at the closing price of the common stock on 10/3/2016, the first business date that they were authorized for release,or $31.64, and are 100% vested.

F1 · price: Indepedent Directors of Rofin-Sinar Technologies Inc. (RSTI) receive an annual grant of 3,000 shares of common stock from the RSTI Incentive Plan. The shares are valued at the closing price of the common stock on 10/3/2016, the first business date that they were authorized for release,or $31.64, and are 100% vested.

Read SEC document
October 03, 2016 Filed Oct 17, 2016 20:37 UTC PLUG POWER INC PLUG · Entity 4258 GrantPlug Power Common Stock 5,117 $1.71 $8,750.07
Disclosure

SEC source: 0001104659-16-150522 · a4.xml · nonDerivative · entry 1

WILLIS GARY K · CIK 0001121475 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 248,728

F1 · price: Quarterly Stock compensation awarded to directors pursuant to Plug Power's 2011 Non-Employee Directors Compensation Plan.

Read SEC document

Value uses the disclosed total when available, otherwise shares × reported transaction price. It is not an estimate of exercise cash cost or investment performance.