X0508 4 2025-07-02 0001610853 HELIUS MEDICAL TECHNOLOGIES, INC. HSDT 0001296853 MATHIESEN JEFFREY S C/O HELIUS MEDICAL TECHNOLOGIES, INC. 642 NEWTOWN YARDLEY ROAD, SUITE 100 NEWTOWN PA 18940 true true CFO and Treasurer false Stock Option (Right to Buy) 9.76 2025-07-02 4 A 0 26200 0 A 2035-07-01 Class A Common Stock 26200 26200 D Grant to the Reporting Person of a stock option under the Issuer's 2022 Equity Incentive Plan. 50% of the options vested immediately upon grant, and the remaining options vest in a series of twelve (12) successive equal quarterly installments on the last day of each quarter starting on September 30, 2025, subject to the Reporting Person's continued service through each applicable vesting period. /s/ Stephanie Swan, by Power of Attorney 2025-07-03