X0609 4 2026-05-01 0001824893 Surrozen, Inc./DE SRZN 0001526064 Parker Craig C false C/O SURROZEN, INC. 171 OYSTER POINT BLVD., SUITE 400 SOUTH SAN FRANCISCO CA 94080 true true false false Chief Executive Officer false Common Stock 2026-05-01 4 M false 12500 A 21077 D Common Stock 2026-05-04 4 S false 4524 33.3328 D 16553 D Restricted Stock Unit 2026-05-01 4 M false 12500 0 D Common Stock 12500 12500 D Each restricted stock unit, or RSU, represents a contingent right to receive one share of the Issuer's common stock. The shares were sold to cover withholding taxes upon vesting of RSUs in transactions that were initiated by the Issuer on the reporting person's behalf. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $33.04 to $33.63, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range. These RSUs vest in two equal installments on May 1, 2026 and May 1, 2027. /s/ Charles Williams, Attorney-in-Fact for Craig C. Parker 2026-05-05