![John O’Hara](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>)
John O’Hara
Director of Finance/CFO at
SEALSQ CORP
Net worth: 608 485 $ as of 30/09/2026
Profile
Mr. John O’Hara is a Chief Financial Officer & Executive Director at SEALSQ Corp.
and a Chief Financial Officer at WISeQey Corp.
He is on the Board of Directors at SEALSQ Corp.
Mr. O’Hara was previously employed as a Chief Financial Officer & Director by WISeKey International Holding Ltd., a Global Financial Controller by Jesuit Worldwide Learning-Higher Education At The Margins Usa, a Finance Director by Deloitte LLP (US), a Financial Controller by Marsh & McLennan Cos., Inc., and a Group Accountant by CHELSEA FC PLC.
He received his undergraduate degree from the University of Durham.
Known holdings in public companies
| Company | Date | Number of shares | Valuation | Valuation date |
|---|---|---|---|---|
SEALSQ CORP. 0.11% | 05/06/2026 | 250,431 ( 0.11% ) | 586 009 $ | 30/09/2026 |
0.02% | 01/10/2026 | 1,917 ( 0.02% ) | 22 467 $ | 30/09/2026 |
| 27/03/2026 | 4 ( 0% ) | 9 $ | 30/09/2026 | |
-.--% | 30/04/2026 | 0 ( -.--% ) | - $ | 30/09/2026 |
John O’Hara active positions
| Companies | Position | Start |
|---|---|---|
| SEALSQ CORP | Director of Finance/CFO | 24/01/2024 |
Former positions of John O’Hara
| Companies | Position | End |
|---|---|---|
Jesuit Worldwide Learning-Higher Education At The Margins Usa | Comptroller/Controller/Auditor | 01/12/2018 |
Deloitte Consulting LP
 Deloitte Consulting LP Miscellaneous Commercial ServicesCommercial Services Provides accounting and auditing services | Director of Finance/CFO | 01/08/2017 |
| MARSH & MCLENNAN COMPANIES | Comptroller/Controller/Auditor | 01/03/2015 |
Chelsea FC Holdings Ltd.
 Chelsea FC Holdings Ltd. Movies/EntertainmentConsumer Services Operates as a football club | Comptroller/Controller/Auditor | 01/12/2006 |
WISeKey International Holding Ltd.
 WISeKey International Holding Ltd. Information Technology ServicesTechnology Services Offers digital security technology solutions | Director of Finance/CFO | - |
Education of John O’Hara
Experiences
Positions held
Active
Inactive
Listed companies
Private companies
Connections
61
1st degree connections
7
1st degree companies
Male
Female
Members of the board
Executives
Linked companies
| Private companies | 7 |
|---|---|
Marsh & McLennan Cos., Inc.
 Marsh & McLennan Cos., Inc. Insurance Brokers/ServicesFinance Provides risk management advisory and insurance services | Finance |
University of Durham
 University of Durham Other Consumer ServicesConsumer Services Functions as a College/University | Consumer Services |
Chelsea FC Holdings Ltd.
Chelsea FC Holdings Ltd. Movies/EntertainmentConsumer Services Operates as a football club | Consumer Services |
WISeKey International Holding Ltd.
WISeKey International Holding Ltd. Information Technology ServicesTechnology Services Offers digital security technology solutions | Technology Services |
Deloitte Consulting LP
Deloitte Consulting LP Miscellaneous Commercial ServicesCommercial Services Provides accounting and auditing services | Commercial Services |
Jesuit Worldwide Learning-Higher Education At The Margins Usa | |
SEALSQ Corp.
 SEALSQ Corp. SemiconductorsElectronic Technology Manufactures semiconductor chips, embedded firmware and hardware | Electronic Technology |
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