Netum Group Plc | Company announcement | 26 November 2025 at 9:00 a.m. EET

Changes in Netum Group Plc's Management Team: Outi Mattila appointed as a member of the Management Team, Mikko Koistinen, CEO of the subsidiary Buutti Oy, takes up the position of Strategic Account Director

Outi Mattila has been appointed as the Business Director of Netum Buutti business area and a member of Netum Group's Management Team as of 1 January 2026. Mattila joins Netum from Siili Solutions, where she has worked as Lead Sales Manager, responsible for the company's strategic accounts. In addition, Mattila has more than 20 years of experience in B2B sales and business management, and has worked at Twoday and Solidabis Solutions, among others.

"I am excited to lead the growth of the Netum Buutti business and build a unified Netum that creates value for customers with the teams – the transformation of artificial intelligence opens up new opportunities to strengthen partnerships and create sustainable value for our customers," comments Outi Mattila.

"It's great to have Outi's energy and experience involved. She will accelerate the construction of One Netum with her strong vision and market knowledge – and open up completely new opportunities for us in this business area," says Repe Harmanen, CEO of Netum Group.

Buutti Oy's Board of Directors and CEO Mikko Koistinen have jointly agreed that Koistinen will leave his position as Buutti Oy's CEO and member of the Group's Management Team at the same time and will take up the position of Netum's Strategic Account Director as of 1 January 2026.

"I'm really happy that Mikko is taking the lead as Strategic Account Director. He knows Netum's methods, services and goals inside out. I strongly believe that under his leadership, we will take our customer strategy to the next level," Harmanen continues.

Netum Group's Management Team as of 1 January 2026:

• Repe Harmanen, CEO
• Peter Ahlskog, CFO
• Liina Kangas, Director, HR & Marketing
• Sami Rantanen, Sales Director
• Mikko Pitkänen, Business Director, Netum Ltd
• Outi Mattila, Business Director, Buutti Oy
• Liisa Rusanen, CEO, Studyo Oy
  
  

For further information, please contact:
Netum Group Plc
Repe Harmanen, CEO
+358 400 467 717
repe.harmanen@netum.fi

Certified Adviser:
Evli Plc
+358 40 579 6210

Netum Group Plc
Netum is an IT service partner that builds a functional and secure digital society. We help our customers develop their digital business by designing and implementing sustainable digital solutions tailored to their needs – wisely and responsibly. Netum employs approximately 350 people, and the Group's revenue in 2024 was EUR 44 million. Netum Group Plc's shares are listed on Nasdaq Helsinki First North (NETUM). www.netum.fi