ORION CORPORATION STOCK EXCHANGE RELEASE / MAJOR SHAREHOLDER ANNOUNCEMENTS12 January 2026 at 15:00 EET Orion Corporation: Disclosure Under Chapter 9 Section 10 of the Securities Market Act (BlackRock, Inc.) Orion Corporation has received a disclosure under Chapter 9, Section 5 of the Securities Market Act, according to which the total number of Orion shares owned directly, indirectly and through financial instruments by BlackRock, Inc. and its funds increased on 9 January 2026 above five (5) per cent of Orion Corporation's total shares. Total positions of BlackRock, Inc. and its funds subject to notification: % of shares and voting rights (total of point A) % of shares and voting rights through financial instruments (total of point B) Total of both in % (points A + B) Total number of shares and voting rights of issuer Resulting situation on the date on which threshold was crossed or reached 4.97% shares Below 5% voting rights 0.04% shares Below 5% voting rights 5.01% shares Below 5% voting rights 141,134,278 shares 744,770,339 voting rights Position of previous notification (if applicable) Below 5% shares Below 5% voting rights Below 5% shares Below 5% voting rights Below 5% shares Below 5% voting rights Notified details of the resulting situation on the date on which the threshold was crossed: Point A: Shares and voting rights: Class/type of shares ISIN code Number of shares and voting rights % of shares and voting rights Direct (SMA 9:5) Indirect (SMA 9:6 and 9:7) Direct (SMA 9:5) Indirect (SMA 9:6 and 9:7) FI0009014377 7,014,577 shares Below 5% voting rights 4.97% shares Below 5% voting rights POINT A SUBTOTAL 7,014,577 shares Below 5% voting rights 4.97% shares Below 5% voting rights Point B: Financial instruments according to SMA 9:6a: Type of financial instrument Expiration date Exercise / Conversion Period Physical or cash settlement Number of shares and voting rights % of shares and voting rights American Depositary Receipt (US68628Y1047) N/A N/A Physical 200 shares Below 5% voting rights 0.00% shares Below 5% voting rights Securities Lent N/A N/A Physical 56,980 shares Below 5% voting rights 0.04% shares Below 5% voting rights POINT B SUBTOTAL 57,180 shares Below 5% voting rights 0.04% shares Below 5% voting rights Orion Corporation Liisa Hurme President and CEO Mikko Kemppainen General Counsel Contact person:Tuukka Hirvonen, Investor Relations, Orion Corporationtel.