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Robert Blumberg, CEO of Mapvision, will take on the role of CEO of Summa Defence on April 13, 2026, cutting Interim CEO Timo Huttunen’s tenure to almost six months, the Finnish defence and security technology group announced today.
Blumberg currently serves as CEO of Mapvision and previously held senior roles at Lemminkäinen and Valmet Automotive, where he was COO. Earlier in his career, he spent a decade at Metso in project management and business development roles across Finland and China.
Moreover, Summa said that Petter Ruda will join the company as chief financial officer, also effective April 13, 2026. He will report to Blumberg and serve on the executive management team. Ruda joins from outside the company and brings more than 20 years of financial leadership experience.
The appointments mark the first additions to the executive management team following a turbulent period of leadership changes in 2025. Five management team members left Summa last year, based on Listeds data.
Summa Defence Plc is a Finland-based defence and security technology group focused on building a portfolio of companies across maritime, land, and new technologies. In 2025, the company reported net sales of EUR 100.9 million, up from EUR 79.2 million, while profitability remained negative, with an operating loss of EUR 19.8 million, reflecting restructuring costs and early-stage investments.
“I would like to warmly thank Interim CEO Timo Huttunen for his successful leadership during the transition period,” said Chairman Arto Räty, highlighting the board’s confidence in the new management team to advance the company’s strategic goals.
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