ENTG files Form 144 for proposed share sales

ENTG submitted a Form 144 notice through Fidelity Brokerage Services LLC for a proposed sale of 19,893 shares of Common Stock for an aggregate amount of $2,642,660.01, with the broker address shown and a filing date of 05/15/2026.

Rhea-AI Filing Summary

ENTG submitted a Form 144 notice through Fidelity Brokerage Services LLC for a proposed sale of 19,893 shares of Common Stock for an aggregate amount of $2,642,660.01, with the broker address shown and a filing date of 05/15/2026. The filing lists specific lot events tied to restricted stock vesting on 02/19/2026 (5,130 shares) and 04/05/2026 (1,803 shares), plus an option exercise/related lot dated 02/04/2020 with 12,960 shares referenced and a cash designation on 05/15/2026.

Insights

Securities Counsel

Form 144 records a brokered notice to sell 19,893 shares and lists vesting and option-related lots.

The notice identifies 19,893 shares and an aggregate amount of $2,642,660.01, and ties specific lots to restricted stock vesting on 02/19/2026 (5,130 shares) and 04/05/2026 (1,803 shares), plus a 12,960-share lot linked to an option granted 02/04/2020.

Filing a Form 144 is a regulatory step that permits proposed sales under the securities laws; the document shows broker involvement and lot dates but does not itself report completed market transactions or proceeds recipients beyond the listed aggregate figure.

Key Figures

Proposed shares: 19,893 shares Aggregate amount: $2,642,660.01 Vesting lot 1: 5,130 shares +2 more

5 metrics

Proposed shares 19,893 shares aggregate shown on filing

Aggregate amount $2,642,660.01 aggregate amount listed on filing

Vesting lot 1 5,130 shares Restricted Stock Vesting on <date>02/19/2026</date>

Vesting lot 2 1,803 shares Restricted Stock Vesting on <date>04/05/2026</date>

Option-related lot 12,960 shares linked to Option Granted <date>02/04/2020</date>

Key Terms

Form 144, Restricted Stock Vesting, Option Granted

3 terms

Form 144 regulatory

"Filer Information | Common | Fidelity Brokerage Services LLC | 19893 | 2642660.01"

Form 144 is a document that investors must file with the government when they plan to sell a large number of shares of a company's stock. It helps ensure transparency so everyone knows how many shares are being sold and when, which can impact the stock's price.

Restricted Stock Vesting financial

"Restricted Stock Vesting | Issuer | 5130 | 02/19/2026"

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.

Option Granted financial

"Option Granted 02/04/2020 | Issuer | 12960 | 05/15/2026"

FAQ

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

What does ENTG's Form 144 report show?

The filing lists a proposed sale of 19,893 shares for an aggregate $2,642,660.01. It identifies specific lots tied to restricted stock vesting on 02/19/2026 and 04/05/2026, and a 12,960-share lot linked to an option.

Who is the broker filing the Form 144 for ENTG?

The notice names Fidelity Brokerage Services LLC at 900 Salem Street, Smithfield RI. The broker is the listed intermediary for the proposed sale; the filing shows the broker's address and the filing date 05/15/2026.

Do the lot entries indicate why the shares are being sold?

The filing ties amounts to Restricted Stock Vesting on 02/19/2026 and 04/05/2026 and to an Option Granted 02/04/2020. These labels describe the origin of lots but do not state whether sales have occurred.

Does Form 144 confirm completed sales or cash received by ENTG?

Form 144 is a notice of a proposed sale and shows an aggregate amount of $2,642,660.01. It does not by itself confirm that market sales were completed or who ultimately received cash proceeds.

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

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Accepted by SEC EDGAR 05/15/2026 - 12:06 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	19893	2642660.01	152500000	05/15/2026	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	02/19/2026	Restricted Stock Vesting	Issuer			5130	02/19/2026	Compensation
Common	04/05/2026	Restricted Stock Vesting	Issuer			1803	04/05/2026	Compensation
Common	05/15/2026	Option Granted 02/04/2020	Issuer			12960	05/15/2026	Cash

* 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

Nothing to Report

144: Remarks and Signature

Remarks
Date of Notice	05/15/2026
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/ Louis Kurnick, 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)