X0206 3 2024-08-30 1 0001781162 Momentus Inc. MNTS 0001851815 SBI Securities Co., Ltd. IZUMI GARDEN TOWER 1-6-1 ROPPONGI MINATO-KU TOKYO M0 1066019 JAPAN 0 0 0 1 See Remarks This statement is being filed by SBI Securities Co., Ltd. (the "Reporting Person"). The Reporting Person disclaims beneficial ownership of the securities reported herein except to the extent of its pecuniary interest therein.On August 30, 2024, the Reporting Person experienced an increase in its beneficial ownership of Momentus Inc. (the "Issuer") to above 10% of the outstanding common stock of the Issuer due to a securities borrow transaction. Masato Takamura 2024-09-10