PRO DEX INC

Insider Trading Arrangements and Policies

On February 11, 2026, our Chief Executive Officer, Richard Van Kirk, cancelled the 10b5-1 trading arrangement that he created on November 12, 2025. On February 19, 2026, he adopted a new “Rule 10b5-1 trading arrangement” as such term is defined in Item 408(a) of Regulations S-K. This trading arrangement is intended to satisfy the Rule 10b5-1 affirmative defense. This trading arrangement commences on May 21, 2026, terminates on February 15, 2028, unless earlier terminated in accordance with its terms, and covers the disposition of up to 10,000 shares of our common stock. The remaining terms of the trading arrangement are confidential. The plan was adopted for diversification of the individual’s portfolio and not for any other purpose.

On March 24, 2026, our Chairman of the Board of Directors, Nicholas Swenson, in his capacity as general manager of AO Partners adopted a “Rule 10b5-1 trading arrangement” as such term is defined in Item 408(a) of Regulations S-K. This trading arrangement commences on June 22, 2026, terminates on June 22, 2027, unless earlier terminated in accordance with its terms, and covers the disposition of up to $3.0 million of our common stock. The remaining terms of the trading arrangement are confidential.

No additional directors or officers informed us of the adoption, modification or termination of a “Rule 10b5-1 trading arrangement” or “non-Rule 10b5-1 trading arrangement,” as those terms are defined in Item 408 of Regulation S-K during the three months ended March 31, 2026.