The management of Thunderful Group consists of people with many years of experience from the various business segments.

Name   Position Member of the group
management since
Employed in the Company since Holdings in
the Company*
Martin Walfisz  CEO 2023 2023 14,880 S
250,000 W
Per Alnefelt Interim CFO 2024 2024
Kathrin Strangfeld EVP of operations 2023 2023

80,000 O 40,000 W

Harriet Hughes EVP of publishing 2023 2023 30,000 O
Sue Smith GVP of people & culture 2023 2023 30,000 O
Johan Mannerhill EVP of distribution 2023 2023
Clarie Boissiere EVP of studios & development 2023 2023 30,000 O

*Refers to shares (”S”), options ("O") and warrants series (”W”) issued under the Company’s incentive program, held in their own name as well as by affiliated natural and legal persons.

Martin Walfisz

Martin Walfisz


Background and education:
Software engineer and honorary doctorate at Blekinge University of Technology. Martin Walfisz has been active as an entrepreneur, company manager and investor in the gaming industry for over twenty-five years. In 1997, he founded Massive Entertainment (now part of Ubisoft), where he was CEO until 2009. Since then, Martin has held senior positions and board assignments in a number of game companies, as well as building up the game investment business Nordisk Games for the media group Egmont. He is also the founder of the industry association for Swedish game developers, and was its first chairman..

Selection of other assignments:
Chairman of the board of Multiscription Holding ApS. Board member of Cross Reality International AB and Game Habitat Southern Sweden AB.

Favourite Thunderful game:
Lonely Mountains: Dowhill

Favourite Nintendo game:
Super Mario Galaxy 

Per Alnefelt

Per Alnefelt

Interim CFO

Interim CFO since April 2024

Born: 1960

Background and education:
Per has a degree in Business Administration from University of Uppsala. With more than 30 years of experience from leading finance positions in global companies as well as listed Swedish companies, Per spent his early days of his career working with auditing, leasing & mutual funds sales and treasury. He subsequently took on positions as Finance Director/Business Director/CFO at Fujitsu Siemens Computers Nordic Region, Rank Xerox AB,, Teleperformance Nordic and Tobin Properties AB. Per has also gained management consulting experience from 5 years with Capacent AB. The last 3 years Per has worked as interim consultant with focus on the CFO agenda and with clients such Storskogen Group AB and Dynamic Code AB.

Claire Boissiere

Claire Boissiere

EVP of Studios & Development

Background and Education
Claire has been at the forefront of games development for over 23 years, working across production, design and narrative to deliver innovative and award-winning games. She has worked at several major studios including Kuju Entertainment, Media Molecule and PlayStation London Studio, where her responsibilities included leading the creative/writing process with prominent writers on the BAFTA nominated Wonderbook: Book of Spells and its sequel Book of Potions and other titles.

Other Engagements
Chair in BGI and National Video Games Museum, Advisory Board of Grads in Games. A Member of BAFTA

Favorite Thunderful Game

Favorite Nintendo Game
Animal Crossing

Kathrin Strangfeld

Kathrin Strangfeld

EVP of Operations

Background and Education
With a background rooted in International Business, Kathrin obtained a dual degree from Universidad de Belgrano in Buenos Aires, Argentina, and Aalen University in Germany. Her academic pursuits provided a comprehensive understanding of global business dynamics, laying a solid foundation for her professional journey.

Throughout her career, she has gained valuable experience across various industries, including Marketing, Logistics, Business Intelligence Consulting, and Electronics. In 2008, she transitioned into the video games industry, joining PlayStation regional headquarters in London. Her tenure at PlayStation saw her hold several senior roles in Business Development and Corporate Strategy, showcasing her adaptability and expertise across diverse sectors.

Her educational background and multifaceted professional experiences reflect a versatile skill set, poised to navigate the complexities of the evolving global business landscape.

Favorite Thunderful Game
Lost in Random

Favorite Nintedo Game
Mario Kart

Johan Mannerhill

Johan Mannerhill

EVP of Distribution

Background and Education
Johan has more than two decades of experience from leading positions in the entertainment industry.Most recently +10 years at Warner Bros. Discovery, where he held the position Managing Director for the Home Entertainment Film, TV and Games divisions across the Nordics.

Prior to this, he held leading commercial positions at Bandai Namco and Electronic Arts after starting his career in the logistics solutions industry.

In addition to this, Johan has played a key role in establishing and chairing industry associations in both the Games (MDTS and Dataspelsbranschen) and the Film/TV industry (DEG).

Favorite Thunderful Game
SteamWorld Dig 2

Favorite Nintedo Game
Mario´s Cement Factory

Sue Smith

Sue Smith

GVP of People & Culture

Background and Education
Gained a Combined Bachelor of Arts degree  from Sunderland University and a CIPD Post Graduate Diploma in People Management & Development from  Dundee & Angus College.

Before joining Thunderful Group, Sue held various people related roles across private, public and third sector global and regional organisations, including HR Business Partner at games studio, Coatsink, HR Controller at logistics firm Vantec Europe and HR Manager at transport group Arriva plc.  Sue also held HR roles with the Church of England, County Durham & Darlington Fire & Rescue Service, North Tyneside Council, Age UK's North Tyneside and Northumberland, and at the beginning of her career, at automotive component company TRW and Abertay University

Favourite Thunderful Game
Planet of Lana for the artwork

Favourite Nintendo Game
I still have a giggle with Overcooked!

Insider positions