ENTG insider Colella plans 3,916-share stock sale

Joseph M. Colella filed to sell up to 3,916 shares of ENTG common stock through Fidelity Brokerage Services LLC on or after 08/13/2026, to be issued from a stock option exercise paid in cash.

Rhea-AI Filing Summary

Joseph M. Colella filed to sell up to 3,916 shares of ENTG common stock through Fidelity Brokerage Services LLC on or after 08/13/2026, to be issued from a stock option exercise paid in cash. The planned sale has an indicated value of $644,103.66. Colella also reported selling 6,326 shares of common stock on 05/14/2026 for proceeds of $886,718.20.

Key Figures

Planned shares to be sold: 3,916 shares Planned sale value: $644,103.66 Prior shares sold: 6,326 shares +2 more

5 metrics

Planned shares to be sold 3,916 shares Common stock proposed for sale on or after 08/13/2026

Planned sale value $644,103.66 Estimated value associated with 3,916 shares of common stock

Prior shares sold 6,326 shares Common stock sold on 05/14/2026 during past three months

Prior sale proceeds $886,718.20 Value of 6,326 common shares sold on 05/14/2026

Planned sale date 08/13/2026 Date related to proposed sale and stock option exercise

Key Terms

Form 144, Stock Option Exercise, brokerage services

3 terms

Form 144 regulatory

"Joseph M. Colella filed to sell shares under Form 144."

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.

Stock Option Exercise financial

"The shares are to be issued from a stock option exercise paid in cash."

A stock option exercise is the act of using a previously granted right to buy shares of a company's stock at a specific, predetermined price by paying that price and receiving the shares. It matters to investors because exercising changes who owns the shares (which can dilute existing ownership), can trigger taxable events and shift potential gains or losses, and affects voting power and the company’s outstanding share count—like turning a voucher into an actual product that becomes part of circulating supply.

brokerage services financial

"Shares are to be sold through Fidelity Brokerage Services LLC."

Brokerage services are firms or online platforms that act as the bridge between individual or institutional investors and financial markets, handling the buying, selling and safekeeping of stocks, bonds and other securities. They also provide tools like trading platforms, market research, account administration and optional credit for trading on margin; these features and fees directly affect an investor’s costs, access to opportunities and the speed and reliability of executing trades—like choosing the right driver and route for an important trip.

FAQ

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

What does Joseph M. Colella’s Form 144 filing mean for ENTG shareholders?

The filing indicates a plan to sell up to 3,916 ENTG shares from a stock option exercise. It is a notice of a potential sale, not confirmation that all reported shares will be sold.

How many ENTG shares is Joseph M. Colella planning to sell?

Joseph M. Colella plans for the potential sale of 3,916 shares of ENTG common stock. These shares are tied to a stock option exercise with a planned sale date of 08/13/2026.

What is the estimated value of Joseph M. Colella’s planned ENTG stock sale?

The planned sale of 3,916 ENTG shares has an estimated value of $644,103.66. This reflects the value disclosed in connection with the proposed transaction through Fidelity Brokerage Services LLC.

Has Joseph M. Colella recently sold additional ENTG shares?

Yes. Joseph M. Colella reported selling 6,326 ENTG common shares on 05/14/2026 for proceeds of $886,718.20. This prior sale is disclosed as activity during the past three months.

How will Joseph M. Colella acquire the ENTG shares he plans to sell?

The 3,916 ENTG shares to be sold are to be obtained via a stock option exercise. The exercise is listed as being paid in cash with a planned date of 08/13/2026.

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

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Available on EDGAR 08/13/2026 - 04:40 PM Accepted by SEC EDGAR 08/13/2026 - 04:40 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	0001811061
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	Colella Joseph
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	3916	644103.66	152800000	08/13/2026	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	08/13/2026	Stock Option Exercise	Issuer			3916	08/13/2026	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

Name and Address of Seller	Title of Securities Sold	Date of Sale	Amount of Securities Sold	Gross Proceeds
Joseph M. Colella 129 Concord Road Billerica MA 01821	Common	05/14/2026	6326	886718.20

144: Remarks and Signature

Remarks
Date of Notice	08/13/2026
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/ Daniel Tucci, as a duly authorized representative of Fidelity Brokerage Services LLC, as attorney-in-fact for Joseph Colella
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)