![Joseph Mastrangelo](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>)
Joseph Mastrangelo
Chief Executive Officer at
EOS ENERGY ENTERPRISES, INC.
Net worth: 14 M $ as of 2026-05-30
Profile
Mr. Joseph Mastrangelo is a President, Chief Executive Officer & Director at Eos Energy Enterprises, Inc., a President & Chief Executive Officer at Eos Energy Storage LLC and a President at Hi-Power LLC.
He is on the Board of Directors at Eos Energy Enterprises, Inc. Mr. Mastrangelo was previously employed as a President & Chief Executive Officer by Gas Power Systems LLC, a Chief Executive Officer-Power Conversion Business by GE Power Systems, Inc., and an Associate by Westchester Community College.
He received his undergraduate degree from Clarkson University and an undergraduate degree from Westchester Community College.
Known holdings in public companies
| Company | Date | Number of shares | Valuation | Valuation date |
|---|---|---|---|---|
| 2026-06-29 | 1,640,347 ( 0.48% ) | 14 M $ | 2026-05-30 |
Joseph Mastrangelo active positions
| Companies | Position | Start |
|---|---|---|
| EOS ENERGY ENTERPRISES, INC. | Chief Executive Officer | 2019-07-31 |
EOS Energy Storage LLC
 EOS Energy Storage LLC Electrical ProductsProducer Manufacturing Designs, manufactures and sells energy storage | Chief Executive Officer | 2019-07-22 |
HI-Power LLC
 HI-Power LLC Electrical ProductsProducer Manufacturing Manufactures batteries | President | - |
Former positions of Joseph Mastrangelo
| Companies | Position | End |
|---|---|---|
Gas Power Systems LLC
 Gas Power Systems LLC Electrical ProductsProducer Manufacturing Manufactures a natural gas turbine genset | Chief Executive Officer | 2018-02-28 |
GE Power Systems, Inc.
 GE Power Systems, Inc. Wholesale DistributorsDistribution Services Wholesales electrical systems | Corporate Officer/Principal | 2015-07-31 |
Westchester Community College
 Westchester Community College Other Consumer ServicesConsumer Services Functions as a College/University | Corporate Officer/Principal | 1989-12-31 |
Training of Joseph Mastrangelo
Experiences
Positions held
Active
Inactive
Listed companies
Private companies
Connections
6
1st degree connections
7
1st degree companies
Male
Female
Members of the board
Executives
Linked companies
| Private companies | 7 |
|---|---|
Gas Power Systems LLC
Gas Power Systems LLC Electrical ProductsProducer Manufacturing Manufactures a natural gas turbine genset | Producer Manufacturing |
Clarkson University
 Clarkson University Other Consumer ServicesConsumer Services Functions as a College/University | Consumer Services |
GE Power Systems, Inc.
GE Power Systems, Inc. Wholesale DistributorsDistribution Services Wholesales electrical systems | Distribution Services |
Westchester Community College
Westchester Community College Other Consumer ServicesConsumer Services Functions as a College/University | Consumer Services |
EOS Energy Storage LLC
EOS Energy Storage LLC Electrical ProductsProducer Manufacturing Designs, manufactures and sells energy storage | Producer Manufacturing |
Eos Energy Enterprises, Inc.
 Eos Energy Enterprises, Inc. Electrical ProductsProducer Manufacturing Develops energy storage systems | Producer Manufacturing |
HI-Power LLC
HI-Power LLC Electrical ProductsProducer Manufacturing Manufactures batteries | Producer Manufacturing |
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