![Risto Kalevi Siilasmaa](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>)
Risto Kalevi Siilasmaa
Founder at
WITHSECURE OYJ
Net worth: 236 M $ as of 2026-02-27
Profile
Founder of F-Secure Oyj, F-Secure, Inc., First Fellow Oy and First Fellow Partners Oy, Risto Kalevi Siilasmaa is a Finnish entrepreneur and businessperson who has been at the helm of 7 different companies and is Chairman at F-Secure Oyj. He is also on the board of Futurice Oy and Member of European Round Table of Industrialists. He previously was Chairman of Nokia Oyj, Chairman at Elisa Oyj, Chairman for Fruugo Oy, Vice Chairman at Elinkeinoelämän Keskusliitto ry, Chairman, President & Chief Executive Officer of F-Secure, Inc., Non-Executive Director at Ekahau, Inc. and Chairman at Teknologiateollisuus ry. He received a graduate degree from Aalto University.
Known holdings in public companies
| Company | Date | Number of shares | Valuation | Valuation date |
|---|---|---|---|---|
WITHSECURE CORPORATION 34.39% | 2024-12-30 | 60,067,188 ( 34.39% ) | 122 M $ | 2026-02-27 |
F-SECURE OYJ 34.36% | 2025-12-30 | 60,035,288 ( 34.36% ) | 114 M $ | 2026-02-27 |
Risto Kalevi Siilasmaa active positions
| Companies | Position | Start |
|---|---|---|
| WITHSECURE OYJ | Founder | 1988-05-15 |
Hamina Wireless Oy
 Hamina Wireless Oy Packaged SoftwareTechnology Services Develops AI tools for designing and analyzing Wi-Fi, private 5G & wireless IoT networks | Director/Board Member | 2023-12-31 |
Upright Oy
 Upright Oy Packaged SoftwareTechnology Services Develops trading software solutions | Chairman | 2021-12-31 |
Pixieray Oy
 Pixieray Oy Electronic ComponentsElectronic Technology Develops optical hardware and software solutions | Director/Board Member | 2020-12-31 |
CybExer Technologies OÜ
 CybExer Technologies OÜ Information Technology ServicesTechnology Services Provides IT and cyber security training solutions | Director/Board Member | 2021-12-31 |
F-Secure Cyber Security Services Oy | Chairman | 2005-12-31 |
Futurice Oy
 Futurice Oy Packaged SoftwareTechnology Services Provides Internet and mobile software solutions | Director/Board Member | 2017-12-31 |
First Fellow Oy
 First Fellow Oy Investment ManagersFinance First Fellow invests in companies located in Finland. The firm targets companies operating in the fields of the innovative technology companies. It provides equity financing for seed, early and late stage capital requirements. | Founder | 1998-03-24 |
European Round Table of Industrialists | Corporate Officer/Principal | 2012-12-31 |
Former positions of Risto Kalevi Siilasmaa
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Training of Risto Kalevi Siilasmaa
Experiences
Positions held
Active
Inactive
Listed companies
Private companies
Connections
73
1st degree connections
27
1st degree companies
Male
Female
Members of the board
Executives
Linked companies
| Private companies | 27 |
|---|---|
Nokia Oyj
 Nokia Oyj Telecommunications EquipmentElectronic Technology Provides network infrastructure, technology and software services | Electronic Technology |
WithSecure Corp.
 WithSecure Corp. Internet Software/ServicesTechnology Services Provides internet and mobile security software | Technology Services |
Ekahau, Inc.
 Ekahau, Inc. Packaged SoftwareTechnology Services Provides Wi-Fi based real time location systems | Technology Services |
BMA Platform International Ltd.
 BMA Platform International Ltd. Specialty TelecommunicationsCommunications Provides mobile network services | Communications |
Elisa Oyj
 Elisa Oyj Wireless TelecommunicationsCommunications Provides information and communications technology and online services | Communications |
Valimo Wireless Oy
 Valimo Wireless Oy Packaged SoftwareTechnology Services Develops software for mobile and fixed-line network environments | Technology Services |
Aalto University
 Aalto University Other Consumer ServicesConsumer Services Functions as a College/University | Consumer Services |
F-Secure, Inc.
 F-Secure, Inc. Packaged SoftwareTechnology Services Provides software security services | Technology Services |
Alcatel Lucent SAS
 Alcatel Lucent SAS Engineering & ConstructionIndustrial Services Provides engineering and technical services | Industrial Services |
European Round Table of Industrialists | |
Futurice Oy
Futurice Oy Packaged SoftwareTechnology Services Provides Internet and mobile software solutions | Technology Services |
Efecte Oyj
 Efecte Oyj Packaged SoftwareTechnology Services Provides software solutions for enterprise service management | Technology Services |
Blyk Services Oy | |
Elinkeinoelämän Keskusliitto ry
 Elinkeinoelämän Keskusliitto ry Miscellaneous Commercial ServicesCommercial Services Operates as business organization | Commercial Services |
Fruugo Oy
 Fruugo Oy Internet Software/ServicesTechnology Services Operates as a online shopping website | Technology Services |
The Finnish American Chamber of Commerce Inc.
 The Finnish American Chamber of Commerce Inc. Miscellaneous Commercial ServicesCommercial Services Chamber of Commerce | Commercial Services |
Teknologiateollisuus ry
 Teknologiateollisuus ry Miscellaneous Commercial ServicesCommercial Services Operates as membership organization | Commercial Services |
Mendor Oy
 Mendor Oy BiotechnologyHealth Technology Designs, develops and markets diabetes management products | Health Technology |
First Fellow Partners Oy
 First Fellow Partners Oy Financial ConglomeratesFinance Provides financial services | Finance |
First Fellow Oy
First Fellow Oy Investment ManagersFinance First Fellow invests in companies located in Finland. The firm targets companies operating in the fields of the innovative technology companies. It provides equity financing for seed, early and late stage capital requirements. | Finance |
Upright Oy
Upright Oy Packaged SoftwareTechnology Services Develops trading software solutions | Technology Services |
CybExer Technologies OÜ
CybExer Technologies OÜ Information Technology ServicesTechnology Services Provides IT and cyber security training solutions | Technology Services |
Pixieray Oy
Pixieray Oy Electronic ComponentsElectronic Technology Develops optical hardware and software solutions | Electronic Technology |
Quanscient Oy
 Quanscient Oy Packaged SoftwareTechnology Services Develops simulation-as-a-service platform that helps to get product to the market faster | Technology Services |
F-Secure Cyber Security Services Oy | |
F-Secure Oyj
 F-Secure Oyj Packaged SoftwareTechnology Services Provides consumer and cyber security services | Technology Services |
Hamina Wireless Oy
Hamina Wireless Oy Packaged SoftwareTechnology Services Develops AI tools for designing and analyzing Wi-Fi, private 5G & wireless IoT networks | Technology Services |
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