Avantor (AVTR) SVP Eck gets stock awards and covers RSU taxes

Rhea-AI Filing Summary

Avantor, Inc. executive Steven W. Eck, SVP & Chief Accounting Officer, reported equity-based compensation and related tax withholding transactions. On February 19, 2026, he received a grant of 48,859 shares of common stock in the form of restricted stock units that vest in three equal annual installments beginning on February 19, 2027. He was also granted 43,230 stock options that vest on the same three-year schedule starting on that date. On February 20, 2026, 2,125 shares of common stock were withheld at $9.03 per share to cover tax obligations from RSU vesting, a tax-withholding disposition rather than an open-market sale. After these transactions, he directly held 101,802 shares of common stock and 43,230 stock options.

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

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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^*

Eck Steven W

(Last) (First) (Middle)

RADNOR CORPORATE CENTER, BUILDING ONE,

SUITE 200, 100 MATSONFORD ROAD

(Street)

RADNOR PA 19087

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
Avantor, Inc. [ AVTR ]

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

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	SVP & Chief Accounting Officer

3. Date of Earliest Transaction (Month/Day/Year)
02/19/2026

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

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

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

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	02/19/2026		A(1)		48,859	A	$0	103,927	D
Common Stock	02/20/2026		F(2)		2,125	D	$9.03	101,802	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
Stock Options (Right to Buy)	$9.21	02/19/2026		A		43,230		(3)	02/19/2036	Common Stock	43,230	$0	43,230	D

Explanation of Responses:

1. Reflects a grant of restricted stock units that vest in three equal annual installments beginning on February 19, 2027.

2. Represents the number of shares withheld by the Issuer to cover tax withholding obligations in connection with the vesting of RSUs.

3. Reflects a grant of stock options that vest in three equal annual installments beginning on February 19, 2027.

Remarks:

	/s/ Scott Baker,by power of attorney for Steven Eck	02/23/2026
	** 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.

FAQ

What did Avantor (AVTR) executive Steven W. Eck report on this Form 4?

Steven W. Eck reported equity awards and tax withholding. He received 48,859 restricted stock units and 43,230 stock options, and 2,125 shares were withheld to satisfy RSU-related tax obligations rather than sold on the open market.

How many Avantor (AVTR) restricted stock units were granted to Steven W. Eck?

Steven W. Eck received a grant of 48,859 restricted stock units. These RSUs vest in three equal annual installments, beginning on February 19, 2027, providing him with time-based equity compensation tied to continued service at Avantor.

What stock option grant did Steven W. Eck receive from Avantor (AVTR)?

He was granted 43,230 stock options with a price of $0.00 at grant. According to the filing, these options vest in three equal annual installments starting on February 19, 2027, aligning with the restricted stock unit vesting schedule.

Were any Avantor (AVTR) shares sold by Steven W. Eck in this Form 4?

The Form 4 shows a tax-withholding disposition of 2,125 shares at $9.03 per share. The shares were withheld by the issuer to cover RSU-related tax obligations, not sold in an open-market transaction to third-party buyers.

How many Avantor (AVTR) shares does Steven W. Eck hold after these transactions?

After the reported transactions, Steven W. Eck directly held 101,802 shares of common stock. He also held 43,230 stock options, reflecting his updated equity position following the grants and the RSU-related tax withholding event.

When do Steven W. Eck’s Avantor (AVTR) equity awards begin vesting?

Both the restricted stock units and the stock options begin vesting on February 19, 2027. Each award vests in three equal annual installments, tying his long-term compensation to multi-year service and performance at Avantor.