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Summa Defence shares slide after EUR 30 million NATO deal delayed to 2026
Summa Defence shares slide after EUR 30 million NATO deal delayed to 2026

Dec 19, 2025

Summa Defence resumed trading after a one-day halt today, and shares slid sharply after the defense technology company said its planned agreement worth more than EUR 30 million with a NATO country will not be added to the order book this year.

After trading restarted in the afternoon, the Helsinki-listed stock fell more than 8 percent within two hours to around EUR 1.43.

The drone and vessel manufacturer said the prolonged negotiation and approval process has pushed the signing of the contract into the first half of 2026. Deliveries related to the order are now expected to take place in 2026 and 2027.

Summa first disclosed the negotiations on November 4 and said at the time that the potential deal would not impact its financial guidance for 2025.

Authors

Emmi Laine is head of business content at Listeds and our lead for finance and business coverage. She sets the editorial agenda, interviews Nordic business leaders, and writes stories, newsletters, and social content on timely market and corporate topics. Emmi brings nearly eight years of experience from Shanghai's Yicai Global / Yicai Media Group, where she was awarded for reporting on China’s economy, finance sector, and technology innovation. She holds an MSc in Innovation and Entrepreneurship from ESADE Business School in Barcelona and a Master’s degree in International Design Business Management from Aalto University. She also holds a Bachelor’s degree in Culture Studies with a major in Journalism from Stockholm University and has studied Mandarin Chinese and Chinese culture. Emmi is a Finnish citizen and has lived in Finland, Sweden, China, and Portugal.

Emmi Laine is head of business content at Listeds and our lead for finance and business coverage. She sets the editorial agenda, interviews Nordic business leaders, and writes stories, newsletters, and social content on timely market and corporate topics. Emmi brings nearly eight years of experience from Shanghai's Yicai Global / Yicai Media Group, where she was awarded for reporting on China’s economy, finance sector, and technology innovation. She holds an MSc in Innovation and Entrepreneurship from ESADE Business School in Barcelona and a Master’s degree in International Design Business Management from Aalto University. She also holds a Bachelor’s degree in Culture Studies with a major in Journalism from Stockholm University and has studied Mandarin Chinese and Chinese culture. Emmi is a Finnish citizen and has lived in Finland, Sweden, China, and Portugal.

Authors

Emmi Laine is head of business content at Listeds and our lead for finance and business coverage. She sets the editorial agenda, interviews Nordic business leaders, and writes stories, newsletters, and social content on timely market and corporate topics. Emmi brings nearly eight years of experience from Shanghai's Yicai Global / Yicai Media Group, where she was awarded for reporting on China’s economy, finance sector, and technology innovation. She holds an MSc in Innovation and Entrepreneurship from ESADE Business School in Barcelona and a Master’s degree in International Design Business Management from Aalto University. She also holds a Bachelor’s degree in Culture Studies with a major in Journalism from Stockholm University and has studied Mandarin Chinese and Chinese culture. Emmi is a Finnish citizen and has lived in Finland, Sweden, China, and Portugal.

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