X0306 4 2021-09-07 0 0001116942 TTM TECHNOLOGIES INC TTMI 0001785553 Gridley Catherine A 200 EAST SANDPOINTE SUITE 400 SANTA ANA CA 92707 0 1 0 0 EVP, A&D BU President Common Stock 2021-09-07 4 F 0 5874 13.8503 D 66949 D Represents the sale of shares, pursuant to a 10b5-1 Sales Plan, to pay the tax liability incident to the vesting of RSUs. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $13.82 to $13.95, inclusive. The reporting person undertakes to provide to TTM Technologies, Inc. (the "Company"), any security holder of the Company, 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 ranges set forth in this footnote. /s/ Daniel J. Weber, Attorney-in-Fact 2021-09-07