Form 3 Filing for Sukhi Nagesh

This filing, designated as a Form 3, reports that Sukhi Nagesh, SVP & Chief Financial Officer of ENTEGRIS INC, has no securities beneficially owned. The filing was made on May 19, 2026, with the period of report being May 18, 2026. The document also includes a Power of Attorney, signed on May 14, 2026, by Sukhi Nagesh, appointing Joseph Colella and Jordan Kobb as attorneys-in-fact. These representatives are authorized to execute and file various SEC forms, including Forms 3, 4, and 5, as well as Form 144, related to the ownership, acquisition, or disposition of ENTEGRIS, INC. securities. The Power of Attorney remains in effect until Nagesh is no longer required to file these forms or until it is revoked.