144 0001827441 XXXXXXXX LIVE 0001776909 CuriosityStream Inc. 001-39139 8484 GEORGIA AVE. SUITE 700 SILVER SPRING MD 20910 301-755-2050 Stinchcomb Clinton Larry Officer Director Common Fidelity Brokerage Services LLC

900 Salem Street Smithfield RI 02917

252486 1181063.76 57625988 06/13/2025 NASDAQ Common 11/05/2021 Restricted Stock Vesting Issuer N 22518 11/05/2021 Compensation Common 11/04/2022 Restricted Stock Vesting Issuer N 11746 11/04/2022 Compensation Common 08/02/2023 Restricted Stock Vesting Issuer N 23912 08/02/2023 Compensation Common 11/02/2023 Restricted Stock Vesting Issuer N 19196 11/02/2023 Compensation Common 11/03/2023 Restricted Stock Vesting Issuer N 21003 11/03/2023 Compensation Common 05/23/2024 Open Market Purchase Issuer N 39600 05/23/2024 Cash Common 05/28/2024 Open Market Purchase Issuer N 40000 05/28/2024 Cash Common 05/30/2024 Open Market Purchase Issuer N 12000 05/30/2024 Cash Common 05/07/2025 Restricted Stock Vesting Issuer N 62511 05/07/2025 Compensation Y 06/13/2025 /s/ Jennifer Ruchti, as a duly authorized representative of Fidelity Brokerage Services LLC, as attorney-in-fact for Clint Stinchcomb