Entegris CEO granted 38,750 RSUs

Reeder David reported acquisition or exercise transactions in this Form 4 filing.

Rhea-AI Filing Summary

Reeder David reported acquisition or exercise transactions in this Form 4 filing.

ENTEGRIS INC President & CEO David Reeder received a stock-based compensation award, increasing his direct holdings. On April 1, 2026, he was granted 38,750 shares of common stock in the form of restricted stock units at no cash cost.

Each RSU represents a right to receive one Entegris common share. The RSUs vest over time: 25% vest on April 5, 2027, and the remaining 75% vest in equal quarterly installments during the following three years, encouraging long-term alignment. After this grant, Reeder directly holds 97,207 shares.

Insider Trade Summary

Grant/Award: 38,750 shares

Grant/Award 1 txn

Insider Reeder David

Role President & CEO

Type	Security	Shares	Price	Value
Grant/Award	Common Stock	38,750	$0.00	$0.00

Holdings After Transaction: Common Stock — 97,207 shares (Direct)

Footnotes (2)

1. F1. Each restricted stock unit ("RSU") represents a contingent right to receive one share of common stock. The RSUs vest as follows: 25% of the RSUs vest on April 5, 2027, and the remaining 75% of the RSUs vest in equal quarterly installments over the three year period thereafter.
2. F2. Awarded pursuant to the Entegris, Inc. 2020 Stock Plan in consideration of services as an employee.

Key Figures

RSU award: 38,750 units Post-transaction holdings: 97,207 shares Initial vesting portion: 25% of award +3 more

6 metrics

RSU award 38,750 units Restricted stock units of common stock granted April 1, 2026

Post-transaction holdings 97,207 shares Common stock directly owned after the RSU grant

Initial vesting portion 25% of award Vests on April 5, 2027

Remaining vesting portion 75% of award Vests in equal quarterly installments over three years thereafter

Vesting start date April 5, 2027 First vesting date for the RSUs

Vesting period length three years Quarterly vesting period following initial 25% vest

Key Terms

restricted stock unit ("RSU"), contingent right, vest, 2020 Stock Plan

4 terms

restricted stock unit ("RSU") financial

"Each restricted stock unit ("RSU") represents a contingent right to receive one share"

contingent right financial

"represents a contingent right to receive one share of common stock"

vest financial

"The RSUs vest as follows: 25% of the RSUs vest on April 5, 2027"

A vest is the process by which an employee earns the right to receive certain benefits or ownership interests, such as stock or retirement funds, over time. It’s similar to earning a reward gradually, ensuring that the benefit becomes fully yours only after a set period or meeting specific conditions. This makes it important for investors because it determines when they can actually claim or use those benefits.

2020 Stock Plan financial

"Awarded pursuant to the Entegris, Inc. 2020 Stock Plan in consideration"

FAQ

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

What did Entegris (ENTG) CEO David Reeder report in this Form 4?

David Reeder reported receiving 38,750 restricted stock units of Entegris common stock as an equity award. The grant was made as compensation under the Entegris, Inc. 2020 Stock Plan and increased his direct holdings to 97,207 shares after the transaction.

How many Entegris (ENTG) shares does the CEO hold after this RSU grant?

Following the reported RSU award, David Reeder directly holds 97,207 shares of Entegris common stock. This figure reflects his position after the 38,750-share restricted stock unit grant recorded on April 1, 2026, as part of his employee compensation package.

How do the CEO’s 38,750 Entegris (ENTG) RSUs vest over time?

The 38,750 restricted stock units vest in stages to promote retention. Twenty-five percent vest on April 5, 2027, while the remaining 75% vest in equal quarterly installments over the next three years, tying most of the award to multi-year service with Entegris.

What is an RSU in the context of Entegris (ENTG) CEO compensation?

An RSU, or restricted stock unit, is a promise to deliver one Entegris common share in the future if conditions are met. For David Reeder, each RSU converts into a share as it vests according to the specified schedule under the 2020 Stock Plan.

Was cash involved in David Reeder’s Entegris (ENTG) RSU award?

No cash changed hands for this award; the RSUs were granted at a price of $0.00 per share. The grant represents equity-based compensation awarded under the Entegris, Inc. 2020 Stock Plan in consideration of David Reeder’s services as an employee.

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

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Accepted by SEC EDGAR 04/02/2026 - 04:22 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^*

Reeder David

(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)

X	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	President & CEO

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
04/01/2026

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	04/01/2026		A		38,750(1)	A	$0(2)	97,207	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. Each restricted stock unit ("RSU") represents a contingent right to receive one share of common stock. The RSUs vest as follows: 25% of the RSUs vest on April 5, 2027, and the remaining 75% of the RSUs vest in equal quarterly installments over the three year period thereafter.

2. Awarded pursuant to the Entegris, Inc. 2020 Stock Plan in consideration of services as an employee.

Remarks:

	/s/ Joseph Colella, Attorney-In-Fact for David Reeder	04/02/2026
	** 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)