![Stephen Brown](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>)
Stephen Brown
Chief Executive Officer at
SDI GROUP PLC
Net worth: 28 611 $ as of 2026-05-30
Profile
Stephen Mark Brown currently works at SDI Group Plc, as Chief Executive Officer & Director from 2024 and AltEnergis Plc, as Director.
Mr. Brown also formerly worked at BP Launchpad, as Chief Executive Officer, Nordic Windpower USA, Inc., as Engineering Director, Rolls-Royce Holdings Plc, as Technical Director, SustainX, Inc., as Vice President-Operations & Engineering, Vestas Wind Systems A, as Head-Research & Development Business Unit in 2012, Rolls Royce Industrial Power Group, as Principal, Llewellin's Machine Co. Ltd, as Principal, AB Dynamics Plc, as Group Chief Operating Officer, and Romax Technology Ltd., as Global Vice President.
Mr. Brown received his undergraduate degree from Newcastle University.
Known holdings in public companies
| Company | Date | Number of shares | Valuation | Valuation date |
|---|---|---|---|---|
SDI GROUP PLC 0.02% | 2025-07-29 | 25,573 ( 0.02% ) | 28 611 $ | 2026-05-30 |
Stephen Brown active positions
| Companies | Position | Start |
|---|---|---|
| SDI GROUP PLC | Chief Executive Officer | 2024-01-18 |
AltEnergis Plc
 AltEnergis Plc Miscellaneous Commercial ServicesCommercial Services Develops exciting and innovative research for new technologies | Director/Board Member | - |
Former positions of Stephen Brown
| Companies | Position | End |
|---|---|---|
Romax Technology Ltd.
 Romax Technology Ltd. Electronic Equipment/InstrumentsElectronic Technology Provides design, measurement and visualization technologies | Corporate Officer/Principal | - |
| ROLLS-ROYCE HOLDINGS PLC | Chief Tech/Sci/R&D Officer | - |
| DYNAMICS PLC | Chief Operating Officer | - |
BP Launchpad
 BP Launchpad Investment ManagersFinance Acts as an alternative investment manager | Chief Executive Officer | - |
SustainX, Inc.
 SustainX, Inc. Electrical ProductsProducer Manufacturing Provides grid-scale energy storage solutions | Chief Tech/Sci/R&D Officer | - |
Training of Stephen Brown
Experiences
Positions held
Active
Inactive
Listed companies
Private companies
Connections
3
1st degree connections
12
1st degree companies
Male
Female
Members of the board
Executives
Linked companies
| Private companies | 12 |
|---|---|
SustainX, Inc.
SustainX, Inc. Electrical ProductsProducer Manufacturing Provides grid-scale energy storage solutions | Producer Manufacturing |
Sdi Group Plc
 Sdi Group Plc Electronic Equipment/InstrumentsElectronic Technology Designs and manufactures special-purpose instruments for use in the life sciences | Electronic Technology |
Rolls-Royce Holdings Plc
 Rolls-Royce Holdings Plc Aerospace & DefenseElectronic Technology Manufactures aircraft, marine and generator power systems | Electronic Technology |
Vestas Wind Systems A/S
 Vestas Wind Systems A/S Electrical ProductsProducer Manufacturing Manufactures wind turbines and wind power solutions | Producer Manufacturing |
Newcastle University
 Newcastle University Other Consumer ServicesConsumer Services Functions as a College/University | Consumer Services |
Nordic Windpower USA, Inc.
 Nordic Windpower USA, Inc. Electrical ProductsProducer Manufacturing Develops and manufactures two-bladed wind turbines | Producer Manufacturing |
Rolls Royce Industrial Power Group | |
Llewellin's Machine Co. Ltd
 Llewellin's Machine Co. Ltd Llewellin's Machine Co. Ltd is a British company. 'The company is based in Bristol, UK. The company was founded in 1883. | |
Romax Technology Ltd.
Romax Technology Ltd. Electronic Equipment/InstrumentsElectronic Technology Provides design, measurement and visualization technologies | Electronic Technology |
AB Dynamics Plc
 AB Dynamics Plc Electronic Equipment/InstrumentsElectronic Technology Manufactures advanced testing and measurement products for vehicle suspension, brakes and steering | Electronic Technology |
AltEnergis Plc
AltEnergis Plc Miscellaneous Commercial ServicesCommercial Services Develops exciting and innovative research for new technologies | Commercial Services |
BP Launchpad
BP Launchpad Investment ManagersFinance Acts as an alternative investment manager | Finance |
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