EXCHANGE NOTICE, DECEMBER 18, 2019 SHARES ORION OYJ: SHARE CONVERSION A total of 33,944 A-shares converted into B-shares will be traded together with the old B-shares of Orion Oyj as of December 19, 2019. Identifiers of Orion Oyj's share: Trading code: ORNAV ISIN code: FI0009014369 Orderbook id: 35362 Number of shares: 36,335,463 Trading code: ORNBV ISIN code: FI0009014377 Orderbook id: 35363 Number of shares: 104,922,365 Nasdaq Helsinki Oy, Surveillance, survo@nasdaq.com, +358 9 6166 7260