SYNAPTICS Inc

Trading Arrangements

During the fiscal quarter ended September 26, 2026, none of our directors or officers (as defined in Rule 16a-1(f) of the Securities Exchange Act of 1934)adopted, terminated or modified a Rule 10b5-1 trading arrangement or non-Rule 10b5-1 trading arrangement (as such terms are defined in Item 408 of Regulation S-K), except for the adoptions as described below:

• Intended to satisfy the affirmative defense of Rule 10b5-1(c).

** Not intended to satisfy the affirmative defense of Rule 10b5-1(c).

(1) The aggregate number of shares that will be available for sale under each plan is not yet determinable because the shares available will be net of shares sold to satisfy tax withholding obligations arising from the vesting and settlement of the underlying equity awards, and because performance stock units will vest only upon achievement of applicable performance targets and may not vest at all. In addition, each plan provides for (i) a fixed number of shares to be sold in pre-established tranches at specified minimum prices on specified dates, and (ii) additional sales of a percentage of the net shares resulting from the vesting of restricted stock units and performance stock units, at specified minimum prices, on the vesting dates during fiscal 2026 and fiscal 2027. The fixed-share amounts shown in the table above represent the fixed tranches under each plan, and the “+ TBD” amounts represent the net-share sales described below. The percentage of net shares to be sold is 50% for most awards and 100% for certain awards under Mr. Patel’s plan, 25% under Ms. Bodensteiner’s plan, and 50% under Mr. Gupta’s plan. Under the terms of Mr. Patel’s plan, these sales are also reduced by shares sold under his plan adopted on September 4, 2025 from limit orders placed after August 26, 2026 and before the selling start date of the new plan. For purposes of this disclosure, the shares included in the table reflect the aggregate maximum number of underlying shares that can be sold without excluding (i) shares sold to satisfy the tax withholding obligations and (ii) any limitation on the amount of net shares that can be sold on the vesting date of the equity award.