Bittium Corporation Managers' Transactions Bittium Corporation - Managers' Transactions - Petri Toljamo Bittium Corporation, Stock Exchange Release, May 19, 2025, at 3:15 pm (CEST+1) Person subject to the notification requirement Name: Petri Toljamo Position: Chief Executive Officer Issuer: Bittium Oyj LEI: 743700NFG5W5I59OVX65 Notification type: INITIAL NOTIFICATION Reference number: 108905/4/4 Transaction date: 2025-05-15 Outside a trading venue Instrument type: SHARE ISIN: FI0009007264 Nature of transaction: SUBSCRIPTION Transaction details (1): Volume: 14949 Unit price: 6.69 EUR Aggregated transactions (1): Volume: 14949 Volume weighted average price: 6.69 EUR Oulu, May 19, 2025 Bittium Corporation Further information: Karoliina Malmi Vice President, Communications and Sustainability Tel. +358 40 344 2789 Distribution Nasdaq Helsinki Oy Main media Bittium Bittium specializes in the development of reliable, secure communications and connectivity solutions leveraging its 40-year legacy of expertise in advanced radio communication technologies. Bittium provides innovative products and services, customized solutions based on its product platforms and R&D services. Complementing its communications and connectivity solutions, Bittium offers proven information security solutions for mobile devices and portable computers. Bittium also provides healthcare technology products and services for biosignal measuring in the areas of cardiology and neurophysiology. Net sales in 2024 were EUR 85.2 million and operating profit was EUR 8.6 million. Bittium is listed on Nasdaq Helsinki. www.bittium.com