Entegris insider plans Rule 144 stock sale

Entegris, Inc. affiliate Susan Rice filed to sell common stock under Rule 144.

Rhea-AI Filing Summary

Entegris, Inc. affiliate Susan Rice filed to sell common stock under Rule 144. The notice lists a planned sale of 2,062 common shares through Fidelity Brokerage Services, with an aggregate market value of $308,310.24, to be sold on or after August 11, 2026 on NASDAQ.

The filing also notes prior issuances from restricted stock vesting in 2021 and 2024 used as compensation, and a separate sale on May 15, 2026 of 19,893 common shares for $2,642,659.97 in the preceding three months.

Key Figures

Planned shares to be sold: 2,062 shares Planned sale value: $308,310.24 Recent shares sold: 19,893 shares +3 more

6 metrics

Planned shares to be sold 2,062 shares Common stock to be sold on or after August 11, 2026 under Rule 144

Planned sale value $308,310.24 Aggregate market value of the 2,062 common shares planned for sale

Recent shares sold 19,893 shares Common stock sold on May 15, 2026 within the past three months

Recent sale value $2,642,659.97 Total value of 19,893 Entegris common shares sold on May 15, 2026

Restricted stock vesting 2021 811 shares Restricted stock vesting as compensation on February 19, 2021

Restricted stock vesting 2024 1,251 shares Restricted stock vesting as compensation on February 16, 2024

Key Terms

Rule 144, Restricted Stock Vesting, compensation

3 terms

Rule 144 regulatory

"Susan Rice filed to sell common stock under Rule 144"

Rule 144 is a U.S. securities regulation that sets conditions under which restricted or insider-held shares can be legally resold to the public, such as required holding periods, availability of public information, limits on how much can be sold at once, and certain filing requirements. For investors it matters because it determines when previously locked-up shares can enter the market — like a release valve that can increase supply, affect share price, and signal insider intent.

Restricted Stock Vesting financial

"02/19/2021 | Restricted Stock Vesting | Issuer"

Restricted stock vesting is the timetable and conditions under which shares granted to employees or insiders become fully owned and can be sold, typically requiring continued work or meeting performance goals. It matters to investors because large blocks of shares can become tradable at once, which can change share supply and price, and because vesting aligns insiders’ incentives with the company’s long‑term performance—think of it like a timed unlock that both rewards and locks in key people.

compensation financial

"811 | 02/19/2021 | Compensation Common |"

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What stock sale is Susan Rice planning for ENTG under this filing?

Susan Rice plans to sell 2,062 shares of Entegris common stock, with an aggregate market value of $308,310.24, to be sold on or after August 11, 2026 on NASDAQ through Fidelity Brokerage Services.

What prior Entegris (ENTG) stock sale is disclosed in the last 3 months?

The filing reports a prior sale on May 15, 2026 of 19,893 Entegris common shares for a total value of $2,642,659.97, occurring within the three months before the new planned sale notice.

How were the ENTG shares originally acquired that are referenced in this notice?

The notice states that certain Entegris shares were acquired through Restricted Stock Vesting granted by the issuer as compensation on February 19, 2021 and February 16, 2024, reflecting stock-based awards.

Which broker and market are listed for the planned ENTG share sale?

The planned sale of Entegris common stock is to be executed through Fidelity Brokerage Services LLC on NASDAQ, with the intended sale date listed as August 11, 2026 in the notice.

How many Entegris (ENTG) shares are tied to each restricted vesting event?

The filing shows 811 shares from restricted stock vesting on February 19, 2021 and 1,251 shares from restricted stock vesting on February 16, 2024, both described as compensation from the issuer.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Available on EDGAR 08/11/2026 - 05:18 PM Accepted by SEC EDGAR 08/11/2026 - 05:17 PM Learn about SEC filing dates

Form 144 Filer Information	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 144 NOTICE OF PROPOSED SALE OF SECURITIES PURSUANT TO RULE 144 UNDER THE SECURITIES ACT OF 1933
FORM 144

144: Filer Information

Filer CIK	0001716139
Filer CCC	XXXXXXXX
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer	ENTEGRIS INC
SEC File Number	001-32598
Address of Issuer	129 CONCORD ROAD BILLERICA MASSACHUSETTS 01821
Phone	9784366500
Name of Person for Whose Account the Securities are To Be Sold	Rice Susan G.
See the definition of "person" in paragraph (a) of Rule 144. Information is to be given not only as to the person for whose account the securities are to be sold but also as to all other persons included in that definition. In addition, information shall be given as to sales by all persons whose sales are required by paragraph (e) of Rule 144 to be aggregated with sales for the account of the person filing this notice.
Relationship to Issuer	Officer

144: Securities Information

Title of the Class of Securities To Be Sold	Name and Address of the Broker	Number of Shares or Other Units To Be Sold	Aggregate Market Value	Number of Shares or Other Units Outstanding	Approximate Date of Sale	Name the Securities Exchange
Common	Fidelity Brokerage Services LLC 900 Salem Street Smithfield RI 02917	2062	308310.24	152800000	08/11/2026	NASDAQ

Furnish the following information with respect to the acquisition of the securities to be sold and with respect to the payment of all or any part of the purchase price or other consideration therefor:

144: Securities To Be Sold

Title of the Class	Date you Acquired	Nature of Acquisition Transaction	Name of Person from Whom Acquired	Is this a Gift?	Date Donor Acquired	Amount of Securities Acquired	Date of Payment	Nature of Payment *
Common	02/19/2021	Restricted Stock Vesting	Issuer			811	02/19/2021	Compensation
Common	02/16/2024	Restricted Stock Vesting	Issuer			1251	02/16/2024	Compensation

* If the securities were purchased and full payment therefor was not made in cash at the time of purchase, explain in the table or in a note thereto the nature of the consideration given. If the consideration consisted of any note or other obligation, or if payment was made in installments describe the arrangement and state when the note or other obligation was discharged in full or the last installment paid.

Furnish the following information as to all securities of the issuer sold during the past 3 months by the person for whose account the securities are to be sold.

144: Securities Sold During The Past 3 Months

Name and Address of Seller	Title of Securities Sold	Date of Sale	Amount of Securities Sold	Gross Proceeds
Susan Rice 129 Concord Road Billerica MA 01821	Common	05/15/2026	19893	2642659.97

144: Remarks and Signature

Remarks
Date of Notice	08/11/2026
ATTENTION:
The person for whose account the securities to which this notice relates are to be sold hereby represents by signing this notice that he does not know any material adverse information in regard to the current and prospective operations of the Issuer of the securities to be sold which has not been publicly disclosed. If such person has adopted a written trading plan or given trading instructions to satisfy Rule 10b5-1 under the Exchange Act, by signing the form and indicating the date that the plan was adopted or the instruction given, that person makes such representation as of the plan adoption or instruction date.
Signature	/s/Wade Moss, as a duly authorized representative of Fidelity Brokerage Services LLC, as attorney-in-fact for Susan G. Rice
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)