BENCHMARK ELECTRONICS INC

Rule 10b5-1 Plan Adoptions and Terminations

During the three months ended September 30, 2026, other than as described below, no director or officer (as defined in Rule 16a-1(f) under the Exchange Act) adopted or terminated any “Rule 10b5-1 trading arrangement” or “non-Rule 10b5-1 trading arrangement”, each as defined in Item 408 of Regulation S-K.

On August 27, 2026, David A. Moezidis, the Company's Chief Executive Officer and President, adopted a Rule 10b5-1 trading arrangement intended to satisfy the affirmative defense conditions of Rule 10b5-1(c) under the Exchange Act for the potential sale of up to 16,916 shares of our common stock, subject to certain conditions, that will not occur before November 26, 2026. The arrangement's expiration date is February 18, 2027.

On August 18, 2026, Stephen J. Beaver, the Company's Senior Vice President, General Counsel & Chief Legal Officer, adopted a Rule 10b5-1 trading arrangement intended to satisfy the affirmative defense conditions of Rule 10b5-1(c) under the Exchange Act for the potential sale of up to 20,000 shares of our common stock, subject to certain conditions, that will not occur before November 17, 2026. The arrangement's expiration date is August 31, 2027.

On August 5, 2026, Rhonda R. Buseman, the Company's Senior Vice President, Chief Human Resources Officer, adopted a Rule 10b5-1 trading arrangement intended to satisfy the affirmative defense conditions of Rule 10b5-1(c) under the Exchange Act for the potential sale of up to 8,000 shares of our common stock, subject to certain conditions, that will not occur before November 4, 2026. The arrangement's expiration date is November 4, 2027.