X0508 4 2024-07-03 0001844505 QT IMAGING HOLDINGS, INC. QTI 0002013346 Taylor Ross C/O QT IMAGING HOLDINGS, INC. 3 HAMILTON LANDING SUITE 160 NOVATO CA 94949 1 0 0 0 0 Stock Option (right to buy) 0.748 2024-07-03 4 A 0 40000 0 A 2034-07-03 Common Stock 40000 40000 D One-third of the option will vest on February 15, 2025, and the remaining two thirds will vest in eight equal quarterly installments on each subsequent May 15, August 15, November 15 and February 15, such that the option will be fully vested on February 15, 2027, subject to the Reporting Person's continued service to the Issuer, through each vesting date. /s/ Ross Taylor 2024-07-09