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David Reeder, President & CEO and director of Entegris, Inc. (ENTG), reported equity awards on 08/18/2025. He was granted 56,624 restricted stock units (RSUs) that vest 25% per year over four years beginning 08/18/2026, and an employee stock option to buy 95,576 shares at a $78.41 exercise price that vests in four equal annual installments beginning 08/18/2026 and expires 08/18/2032. The RSUs and option awards were made under the Entegris, Inc. 2020 Stock Plan in consideration of services. Following the reported transactions, the filing shows 61,354 shares beneficially owned and 95,576 underlying option shares reported as beneficial holdings. The Form 4 was executed by an attorney-in-fact and filed on 08/20/2025.

Entegris insider disclosure: Daniel D. Woodland, SVP & President, Microcontamination Solutions Division, reported a disposition of 2,184 shares of Entegris Inc. (ENTG) on 08/15/2025 at a price of $77.12 per share. The filing states the shares were withheld to satisfy tax withholding following settlement of restricted stock units; following the transaction he beneficially owned 36,088.74 shares. The filing notes 121.61 of those shares were acquired under the company Employee Stock Purchase Plan on 06/30/2025. The Form 4 was filed late due to an administrative oversight and was signed by an attorney-in-fact on 08/20/2025.

Susan G. Rice, identified as SVP, Global Human Resources of Entegris Inc. (ENTG), reported transactions dated 08/13/2025 on a Form 4. The filing lists a non-derivative acquisition of 8,858 common shares at $33.33 and a non-derivative disposition of 8,858 common shares at $79.84, with reported direct beneficial ownership levels shown as 65,770.004 and 56,912.004 shares in the respective lines of the form.

The filing also discloses an Employee Stock Option with a $33.33 conversion/exercise price tied to 8,858 underlying shares, notes that the option is fully vested, and states the award was made under the Entegris, Inc. 2010 Stock Plan. The Form 4 was signed on behalf of the reporting person by an attorney-in-fact on 08/14/2025.

The Form 144 for Entegris (ENTG) notifies a proposed sale of 8,858 shares of common stock through Fidelity Brokerage on NASDAQ with an aggregate market value of $707,222.72. The filing lists 151,600,000 shares outstanding, and the proposed approximate sale date is 08/13/2025.

The securities are shown as acquired via an option grant dated 02/05/2019, with acquisition and sale date entries of 08/13/2025, and payment described as cash. The form states there were no securities sold in the past three months and includes the standard signer representation that no material nonpublic adverse information is known and a note about Rule 10b5-1 trading plans.

On 17 Jul 2025, Entegris Inc. (ENTG) Senior Vice President & President, APS Division, Clint M. Haris filed a Form 4 disclosing the sale of 3,627 common shares of company stock at an indicated price of $90.00 per share. The transaction was executed under a pre-arranged Rule 10b5-1 trading plan adopted on 10 Feb 2025, signalling it was scheduled in advance rather than timed to near-term news. After the sale, Haris retains 37,742.67 shares held directly, a position that still reflects meaningful insider ownership; this total includes 257.12 shares acquired through the Employee Stock Purchase Plan on 30 Jun 2025. The filing, signed 21 Jul 2025, represents routine insider activity and does not announce any changes to management roles, strategy or guidance.