[Form 4] ENTEGRIS INC Insider Trading Activity

Entegris Inc. senior vice president and general counsel Joseph Colella had 1,493 shares of common stock automatically withheld to cover taxes when restricted stock units settled.

Rhea-AI Filing Summary

Entegris Inc. senior vice president and general counsel Joseph Colella had 1,493 shares of common stock automatically withheld to cover taxes when restricted stock units settled. The withholding was priced at $116.40 per share, using the closing price on the last trading day before vesting.

After this tax-withholding disposition, Colella directly holds 51,713.45 shares of Entegris common stock. This event reflects routine tax settlement on equity compensation rather than an open-market trade.

Insider Trade Summary

Exercise Price or Tax Liability: 1,493 shares

Exercise Price or Tax Liability 1 txn

Insider Colella Joseph

Role SVP and General Counsel

Type	Security	Shares	Price	Value
Exercise Price or Tax Liability	Common Stock	1,493	$116.40	$174K

Holdings After Transaction: Common Stock — 51,713.45 shares (Direct)

Footnotes (2)

1. F1. Shares automatically withheld upon settlement of restricted stock units to satisfy tax withholding obligations.
2. F2. Because the shares vested on Sunday, April 5, the price stated above is the closing price per share of Entegris common stock on Thursday, April 2nd, the last trading day immediately prior to the vesting date.

Key Figures

Shares withheld for taxes: 1,493 shares Withholding price per share: $116.40 per share Shares held after transaction: 51,713.45 shares

3 metrics

Shares withheld for taxes 1,493 shares Automatic withholding on RSU settlement

Withholding price per share $116.40 per share Closing price on April 2 before April 5 vesting

Shares held after transaction 51,713.45 shares Direct holdings following tax-withholding disposition

Key Terms

restricted stock units, tax withholding obligations, closing price per share

3 terms

restricted stock units financial

"Shares automatically withheld upon settlement of restricted stock units to satisfy tax withholding obligations."

Restricted stock units are a type of company reward where employees are promised shares of stock, but they only fully own these shares after meeting certain conditions, like staying with the company for a set time. They matter because they can become valuable assets and are often used to motivate employees to help the company succeed.

tax withholding obligations financial

"Shares automatically withheld upon settlement of restricted stock units to satisfy tax withholding obligations."

closing price per share financial

"the price stated above is the closing price per share of Entegris common stock"

FAQ

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

What insider transaction did Entegris (ENTG) report for Joseph Colella?

Entegris reported that SVP and general counsel Joseph Colella had 1,493 common shares withheld to satisfy tax obligations on vested restricted stock units. This was an automatic tax-withholding event, not an open-market purchase or sale of shares.

How many Entegris (ENTG) shares were withheld for taxes in this Form 4?

The filing shows 1,493 shares of Entegris common stock were withheld to satisfy tax withholding obligations when restricted stock units settled. This reduced the gross shares delivered from the vesting but simply covered associated tax liabilities.

At what price were the withheld Entegris (ENTG) shares valued?

The withheld shares were valued at $116.40 per share, which was the closing price of Entegris common stock on Thursday, April 2, the last trading day immediately before the Sunday, April 5 vesting date of the restricted stock units.

How many Entegris (ENTG) shares does Joseph Colella hold after this transaction?

After the tax-withholding disposition, Joseph Colella directly holds 51,713.45 shares of Entegris common stock. This figure reflects his position following the automatic share withholding tied to restricted stock unit settlement and related tax obligations.

Was the Entegris (ENTG) insider transaction an open-market sale or a tax event?

The transaction was a tax event, not an open-market sale. Shares were automatically withheld upon settlement of restricted stock units to satisfy tax withholding obligations, consistent with the Form 4’s description of a tax-withholding disposition.

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

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Accepted by SEC EDGAR 04/06/2026 - 03:58 PM Learn about SEC filing dates

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Colella Joseph

(Last) (First) (Middle)

C/O ENTEGRIS, INC.

129 CONCORD ROAD

(Street)

BILLERICA MASSACHUSETTS 01821

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
ENTEGRIS INC [ ENTG ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	SVP and General Counsel

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
04/05/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	04/05/2026		F		1,493(1)	D	$116.4(2)	51,713.45	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. Shares automatically withheld upon settlement of restricted stock units to satisfy tax withholding obligations.

2. Because the shares vested on Sunday, April 5, the price stated above is the closing price per share of Entegris common stock on Thursday, April 2nd, the last trading day immediately prior to the vesting date.

Remarks:

	/s/ Joseph Colella	04/06/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)