X0306 4 2021-08-12 0 0001824893 Surrozen, Inc./DE SRZN 0001526064 Parker Craig C C/O SURROZEN, INC. 171 OYSTER POINT BLVD., SUITE 400 SOUTH SAN FRANCISCO CA 94080 1 1 0 0 Chief Executive Officer Stock Option (right to buy) 10.25 2021-08-12 4 A 0 183335 0.00 A 2031-08-11 Common Stock 183335 183335 D Twenty-five percent of the shares subject to the Stock Option vests on the first anniversary of the vesting commencement date, and the remainder vests in 36 equal monthly installments thereafter for the following three years. /s/ Sheela Mohan-Peterson, Attorney-in-Fact for Craig C. Parker 2021-08-16