Announcement of a change in shareholding according to Chapter 9, Section 10 of the Finnish Securities Market Act Musti Group plc Stock Exchange Release 11 January 2024 at 18.00 Musti Group plc (the “Company”) has on 11 January 2024 received a notification in accordance with the Chapter 9, Section 5 of the Finnish Securities Markets Act from Raphael Kain, according to which Samson Rock Capital LLP's (“Samson Rock”) holding of the voting rights of the Company increased above the threshold of 5 percent on 10 January 2024. Samson Rock holds a total of 1,800,000 voting rights corresponding to an ownership of 5.37 percent of the Company's voting rights. Total positions of Samson Rock according to the notification: % of % of shares and Total Total shares voting rights of number of and through financial both in shares voting instruments (total % and voting rights of B) (A + B) rights of (total issuer of A) Resulting 5.37 0.00 5.37 33,535,453 situation on the (voting (voting date on rights rights which threshold only) only) was crossed or reached Position of N/A N/A N/A 33,535,453 previous notification (if applicable) Notified details of the resulting situation on the date on which the threshold was crossed or reached: A: Shares and voting rights Class/type Number % of shares and voting rights of shares of shares and voting rights ISIN code Direct Indirect Direct Indirect (if (SMA (SMA 9:6 and (SMA 9:5) (SMA 9:6 and 9:7) possible) 9:5) 9:7) FI4000410758 N/A 1,800,000 N/A 5.37 (voting rights only) (voting rights only) SUBTOTAL A N/A 1,800,000 N/A 5.37 (voting rights only) (voting rights only) Full chain of controlled undertakings through which the voting rights and/or the financial instruments are effectively held: Name % of shares % of shares and votingrights Total of and voting throughfinancial instruments both rights Raphael Kain Samson Rock 5.37 (voting 5.37 (voting Capital LLP rights only) rights only) Additional information Martin Svedholm Director, Treasury and Investor Relations tel. +358 50 579 0324, martin.svedholm@mustigroup.com Musti in brief Musti makes the life of pets and their owners easier, safer and more fun. We are the leading Nordic pet care company, and we operate an omnichannel business model to cater for the needs of pets and their owners across Finland, Sweden and Norway. We offer a wide, curated assortment of pet products. We also provide pet care services such as grooming, training and veterinary services in selected locations. Musti Group's net sales were EUR 426 million in the financial year 2023. At the end of the financial year 2023, the company had 1,643 employees, 1.5 million loyal customers and 342 stores.