![Gary Willis](data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" fill="%231b1b1b" class="bi bi-person-fill" viewBox="0 0 16 16"><path d="M3 14s-1 0-1-1 1-4 6-4 6 3 6 4-1 1-1 1zm5-6a3 3 0 1 0 0-6 3 3 0 0 0 0 6"/></svg>)
Gary Willis
Director/Board Member at
PLUG POWER INC.
Net worth: 1 M $ as of 2026-02-27
Profile
Mr. Gary K.
Willis is an Independent Director at Plug Power, Inc. He is on the Board of Directors at Plug Power, Inc. and Middlesex Health Services, Inc. Mr. Willis was previously employed as a Chairman by Zygo Corp.
and a Chairman, President & Chief Executive Officer by Invensys Systems, Inc. He also served on the board at Zygo Corp., Vion Pharmaceuticals, Inc., Benthos, Inc. and Rofin-Sinar Technologies LLC.
He received his undergraduate degree from Worcester Polytechnic Institute.
Known holdings in public companies
| Company | Date | Number of shares | Valuation | Valuation date |
|---|---|---|---|---|
PLUG POWER INC. 0.05% | 2026-01-01 | 690,354 ( 0.05% ) | 1 M $ | 2026-02-27 |
Gary Willis active positions
| Companies | Position | Start |
|---|---|---|
| PLUG POWER INC. | Director/Board Member | 2002-12-31 |
Middlesex Health Services, Inc. | Director/Board Member | 2011-01-26 |
Former positions of Gary Willis
| Companies | Position | End |
|---|---|---|
| ZYGO CORPORATION | Director/Board Member | 2013-12-31 |
Vion Pharmaceuticals, Inc.
 Vion Pharmaceuticals, Inc. BiotechnologyHealth Technology Develops small molecule anticancer compounds | Director/Board Member | 2010-04-07 |
Benthos, Inc.
 Benthos, Inc. Industrial ConglomeratesProducer Manufacturing Manufactures equipment used in oceanographic and undersea environments | Director/Board Member | 2006-01-26 |
| ZYGO CORPORATION | Chief Executive Officer | 1998-12-31 |
Schneider Electric Systems USA, Inc.
 Schneider Electric Systems USA, Inc. Electrical ProductsProducer Manufacturing Engages in energy management and automation business | Chief Executive Officer | 1989-12-31 |
Training of Gary Willis
Experiences
Positions held
Active
Inactive
Listed companies
Private companies
Connections
66
1st degree connections
8
1st degree companies
Male
Female
Members of the board
Executives
Linked companies
| Private companies | 8 |
|---|---|
Zygo Corp.
 Zygo Corp. Electronic Equipment/InstrumentsElectronic Technology Designs, manufactures and supplies advanced optical measurement systems, ultra precise optical components, sensors & assemblies | Electronic Technology |
Vion Pharmaceuticals, Inc.
Vion Pharmaceuticals, Inc. BiotechnologyHealth Technology Develops small molecule anticancer compounds | Health Technology |
Rofin-Sinar Technologies LLC
 Rofin-Sinar Technologies LLC Industrial MachineryProducer Manufacturing Develops, manufactures and markets industrial lasers and supplies for material processing applications | Producer Manufacturing |
Benthos, Inc.
Benthos, Inc. Industrial ConglomeratesProducer Manufacturing Manufactures equipment used in oceanographic and undersea environments | Producer Manufacturing |
Plug Power, Inc.
 Plug Power, Inc. Electronic Production EquipmentElectronic Technology Designs and develops fuel cell technology and solutions | Electronic Technology |
Worcester Polytechnic Institute
 Worcester Polytechnic Institute Other Consumer ServicesConsumer Services Functions as a College/University | Consumer Services |
Schneider Electric Systems USA, Inc.
Schneider Electric Systems USA, Inc. Electrical ProductsProducer Manufacturing Engages in energy management and automation business | Producer Manufacturing |
Middlesex Health Services, Inc. |
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