Entegris exec sells 275 shares in planned trade

ENTEGRIS INC senior executive Olivier Blachier sold a small block of company stock in a pre-planned trade.

Rhea-AI Filing Summary

ENTEGRIS INC senior executive Olivier Blachier sold a small block of company stock in a pre-planned trade. On this transaction date, he completed an open-market sale of 275 shares of Entegris common stock at a price of $115.57 per share. After the sale, he continued to hold 34,896.95 shares directly, indicating he retained the vast majority of his reported position. The filing notes that the sale was executed under a Rule 10b5-1 trading plan established on February 21, 2025, meaning the trade was scheduled in advance rather than timed on the day’s market conditions.

Insider Trade Summary 10b5-1

Net Seller: 275 shares

Net Sell 1 txn

Insider Blachier Olivier

Role SVP, Chief Strategy Officer

Sold 275 shs ($32K)

Type	Security	Shares	Price	Value
Sale	Common Stock	275	$115.57	$32K

Holdings After Transaction: Common Stock — 34,896.95 shares (Direct)

Footnotes (1)

1. F1. These shares were sold pursuant to a Rule 10b5-1 Trading Plan established by the Reporting Person on February 21, 2025.

Key Figures

Shares sold: 275 shares Sale price: $115.57 per share Shares held after: 34,896.95 shares +1 more

4 metrics

Shares sold 275 shares Open-market sale of common stock

Sale price $115.57 per share Price for the 275-share transaction

Shares held after 34,896.95 shares Direct ownership following the sale

Trade plan date February 21, 2025 Establishment date of Rule 10b5-1 plan

Key Terms

Rule 10b5-1 Trading Plan, open-market sale, Common Stock, Form 4

4 terms

Rule 10b5-1 Trading Plan regulatory

"These shares were sold pursuant to a Rule 10b5-1 Trading Plan established by the Reporting Person on February 21, 2025."

A Rule 10b5-1 trading plan is a pre-arranged schedule that allows company insiders to buy or sell stock at specific times, even if they have inside information. It helps prevent accusations of unfair trading by making these transactions look planned and transparent, rather than sneaky or illegal.

open-market sale financial

"transaction_action: "open-market sale""

An open-market sale is when a shareholder sells existing shares directly on a public exchange to any willing buyer, rather than through a private deal. Think of it like putting goods on a busy market stall where price is set by supply and demand; for investors it matters because such sales increase available supply, can put short-term downward pressure on the stock price, and signal changes in liquidity or investor confidence.

Common Stock financial

"security_title: "Common Stock""

Common stock represents ownership shares in a company, giving investors a stake in its success and a say in important decisions through voting rights. It is the most common type of stock traded on markets and can provide income through dividends, as well as potential for value growth. For investors, holding common stock means sharing in the company’s profits and risks.

Form 4 regulatory

"INSIDER FILING DATA (Form 4):"

Form 4 is a official document that company insiders, such as executives or major shareholders, file with regulators whenever they buy or sell company shares. It provides transparency about how those with inside knowledge are trading, helping investors see if insiders are confident in the company's prospects or may be selling for personal reasons. This information can influence investor decisions by revealing insiders' perspectives on the company's value.

FAQ

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

What insider transaction did ENTEGRIS INC (ENTG) report for Olivier Blachier?

ENTEGRIS INC reported that executive Olivier Blachier sold 275 shares of common stock in an open-market transaction at $115.57 per share. This was a relatively small sale compared with his remaining direct holdings of 34,896.95 shares after the transaction.

Was the ENTEGRIS (ENTG) insider sale by Olivier Blachier part of a trading plan?

Yes. The filing states the 275-share sale was executed under a Rule 10b5-1 Trading Plan established on February 21, 2025. Such plans schedule trades in advance, which can reduce the significance of timing decisions relative to discretionary, unscheduled insider transactions.

How many ENTEGRIS INC (ENTG) shares does Olivier Blachier hold after this Form 4 sale?

After selling 275 shares, Olivier Blachier’s direct holdings total 34,896.95 shares of ENTEGRIS INC common stock. This indicates he kept the large majority of his reported position, with only a small fraction affected by this particular open-market transaction.

What price did Olivier Blachier receive for his ENTEGRIS (ENTG) share sale?

Olivier Blachier’s reported sale of ENTEGRIS INC common stock was executed at $115.57 per share. The Form 4 identifies this as an open-market sale and ties the price directly to that transaction, providing clarity on the value realized for the 275 shares sold.

What role does Olivier Blachier hold at ENTEGRIS INC (ENTG)?

According to the filing, Olivier Blachier serves as Senior Vice President and Chief Strategy Officer at ENTEGRIS INC. His role as a senior executive makes his equity transactions reportable, giving investors visibility into changes in his ownership of company common stock.

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

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Accepted by SEC EDGAR 04/08/2026 - 04:46 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).

X

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^*

Blachier Olivier

(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, Chief Strategy Officer

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
04/07/2026

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	04/07/2026		S		275(1)	D	$115.57	34,896.95	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. These shares were sold pursuant to a Rule 10b5-1 Trading Plan established by the Reporting Person on February 21, 2025.

Remarks:

	/s/ Joseph Colella, Attorney-In-Fact for Olivier Blachier	04/08/2026
	** 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)