EXCHANGE NOTICE, JUNE 09, 2023 SHARES A maximum of 5,871,448 new shares (BONEHN0123) of the share issue of BBS-Bioactive Bone Substitutes Oyj will be traded as new shares as of June 12, 2023. Identifiers of the new shares: Trading code: BONEHN0123 ISIN code: FI4000556246 Orderbook id: 295269 Market Segment: First North Finland Tick Size Table: MiFID II tick size table Listing date: June 12, 2023 Nasdaq Helsinki Oy, Surveillance, survo@nasdaq.com, 358 9 6166 7260