Orion Corporation: Disclosure Under Chapter 9 Section 10 of the Securities Market Act (BlackRock, Inc.)

ORION CORPORATION STOCK EXCHANGE RELEASE / MAJOR SHAREHOLDER ANNOUNCEMENTS5 June 2026 at 17.00 EEST          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 and indirectly by BlackRock, Inc. and its funds, and the total number of Orion shares owned directly, indirectly and through financial instruments by BlackRock, Inc. and its funds increased on 4 June 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 5.00% shares   Below 5% voting rights 0.05% shares   Below 5% voting rights 5.06% shares   Below 5% voting rights 141,134,278 shares   738,091,288 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   7,070,047 shares   Below 5% voting rights   5.00% shares   Below 5% voting rights POINT A SUBTOTAL 7,070,047 shares   Below 5% voting rights 5.00% 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 206 shares   Below 5% voting rights 0.00% shares   Below 5% voting rights CFD N/A N/A Cash 78,565 shares   Below 5% voting rights 0.05% shares   Below 5% voting rights       POINT B SUBTOTAL 78,771 shares   Below 5% voting rights 0.05% shares   Below 5% voting rights Orion Corporation Liisa Hurme President and CEO     Mikko Kemppainen General Counsel                                                     Contact person:Tuukka Hirvonen, Investor Relations, Orion Corporationtel.