X0609 4 2026-10-15 0 0001672013 Acushnet Holdings Corp. GOLF 0001687274 Misto Holdings Corp. true 35, BOMUN-RO, SEONGBUK-GU 9F,10F SEOUL M4 KOREA, DEMOCRATIC PEOPLE'S REPUBLIC OF 1 0 1 0 0001687273 Magnus Holdings Co., Ltd. true 35, BOMUN-RO, SEONGBUK-GU 10F SEOUL M5 02873 KOREA, REPUBLIC OF 1 0 1 0 0 Common Stock 2026-10-15 4 D 0 583527 89.9719 D 28940126 I See explanation of responses Represents shares sold to Acushnet Holdings Corp. pursuant to the Stock Repurchase Agreement dated June 8, 2026. Magnus Holdings Co., Ltd., directly holds 28,940,126 shares. The sole shareholder of Magnus Holdings Co., Ltd. is Misto Holdings Corp. (formerly, FILA Holdings Corp.). Because of Misto Holdings Corp.'s relationship to Magnus Holdings Co., Ltd., Misto Holdings Corp. may be deemed to beneficially own the shares directly held by Magnus Holdings Co., Ltd. Magnus Holdings Co., Ltd. and Misto Holdings Corp. (together, the "Reporting Persons") disclaim beneficial ownership of these securities except to the extent of their pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 or for any other purpose. Solely for the purposes of Section 16 of the Exchange Act, each of Magnus Holdings Co., Ltd. and Misto Holdings Corp. may be deemed a director-by-deputization by virtue of the fact that (i) Yoon Soo Yoon is the Chairman of the Board of Directors of Acushnet Holdings Corp. and the Chairman of Misto Holdings Corp., (ii) Keun Chang Yoon is a Director on the Board of Directors of Acushnet Holdings Corp. and is the President and Chief Executive Officer of Misto Holdings Corp. and (iii) Ho Yeon Lee is a Director on the Board of Directors of Acushnet Holdings Corp. and the CEO of Magnus Holdings Co., Ltd. As a result of their roles at Misto Holdings Corp., each of Yoon Soo Yoon and Keun Chang Yoon may be deemed to be the beneficial owner and have voting and dispositive power with respect to the shares directly held by Magnus Holdings Co., Ltd. Each of Yoon Soo Yoon and Keun Chang Yoon disclaims beneficial ownership over the shares held by Magnus Holdings Co., Ltd., except to the extent of his pecuniary interest therein. 6. The Reporting Persons are jointly filing this Form 4 pursuant to Rule 16a-3(j) under the Exchange Act. /s/ Ho Yeon Lee, Chief Executive Officer, Magnus Holdings Co., Ltd. (6) 2026-10-19 /s/ Keun Chang Yoon, Chief Executive Officer and President, Misto Holdings Corp. (6) 2026-10-19