144 0001282998 XXXXXXXX LIVE 0000863436 BENCHMARK ELECTRONICS INC 001-10560 56 SOUTH ROCKFORD DRIVE TEMPE AZ 85281 623-300-7000 LAMNECK KENNETH T Director Common Charles Schwab Corp.

3000 Schwab Way Westlake TX 76262

25000 2162750.00 35877036 05/12/2026 NYSE Common 05/15/2020 Equity Grants Issuer N 5972 05/15/2020 N/A Common 11/12/2015 Equity Grants Issuer N 1307 11/12/2015 N/A Common 05/12/2016 Equity Grants Issuer N 1307 05/12/2016 N/A Common 02/12/2016 Equity Grants Issuer N 1307 02/12/2016 N/A Common 08/12/2015 Equity Grants Issuer N 1306 08/12/2015 N/A Common 05/17/2023 Equity Grants Issuer N 6209 05/17/2023 N/A Common 12/11/2013 Equity Grants Issuer N 1154 12/11/2013 N/A Common 02/07/2015 Equity Grants Issuer N 1099 02/07/2015 N/A Common 07/11/2013 Equity Grants Issuer N 1153 07/11/2013 N/A Common 11/16/2018 Equity Grants Issuer N 1361 11/16/2018 N/A Common 05/12/2022 Equity Grants Issuer N 2825 05/12/2022 N/A Y This transaction is for the LAMNECK FAMILY REVOCABLE TRUST 05/12/2026 KENNTH THOMAS LAMNECK