Avantor (AVTR) HR chief receives major stock, option grants and tax withholding

Rhea-AI Filing Summary

Avantor, Inc. executive Brittany Hankamer reported equity award activity and related tax withholding. On February 19, 2026, she received 80,618 shares of common stock as a grant and 317,310 stock options, both vesting in three equal installments beginning February 19, 2027. On February 20, 2026, 1,453 common shares were withheld at $9.03 per share to cover tax obligations from restricted stock unit vesting, leaving her with 250,728 common shares held directly.

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^*

Hankamer Brittany

(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)
	EVP, Chief HR 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)		80,618	A	$0	252,181	D
Common Stock	02/20/2026		F(2)		1,453	D	$9.03	250,728	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)	$11.05	02/19/2026		A		317,310		(3)	02/19/2036	Common Stock	317,310	$0	317,310	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 installments beginning on February 19, 2027.

Remarks:

	/s/ Scott Baker, by power of attorney for Brittany Hankamer	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 equity awards did Avantor (AVTR) executive Brittany Hankamer receive?

Brittany Hankamer received a grant of 80,618 shares of common stock and 317,310 stock options. Both awards vest in three equal installments starting on February 19, 2027, aligning long-term incentives with company performance and executive retention.

How do the new Avantor (AVTR) restricted stock units for Brittany Hankamer vest?

The restricted stock unit grant of 80,618 common shares vests in three equal annual installments beginning on February 19, 2027. This staggered schedule encourages long-term alignment, as full ownership is earned gradually over a three-year period after the grant date.

What are the vesting terms of the new Avantor (AVTR) stock options granted to Brittany Hankamer?

The 317,310 stock options granted to Brittany Hankamer vest in three equal installments starting on February 19, 2027. This means one-third of the options become exercisable each year over three years, subject to continued service and any plan conditions.

Why did Avantor (AVTR) withhold 1,453 shares from Brittany Hankamer?

Avantor withheld 1,453 common shares from Brittany Hankamer to cover tax withholding obligations related to vesting restricted stock units. The shares were valued at $9.03 per share, allowing taxes to be satisfied without a separate cash payment by the executive.

How many Avantor (AVTR) common shares does Brittany Hankamer hold after these transactions?

Following the reported transactions, Brittany Hankamer directly holds 250,728 shares of Avantor common stock. This figure reflects the net position after the company withheld 1,453 shares to satisfy tax obligations from restricted stock unit vesting events.

Were Brittany Hankamer’s Avantor (AVTR) transactions open-market buys or sells?

The filing shows grants and tax withholding, not open-market trades. She received stock and options at $0.00 grant price, and 1,453 shares were withheld by Avantor at $9.03 solely to meet tax obligations tied to restricted stock unit vesting.