Avantor (AVTR) director receives 25,270-share equity grant, now holds 85,821

Rhea-AI Filing Summary

SEVERINO MICHAEL reported acquisition or exercise transactions in this Form 4 filing.

Avantor director Michael Severino reported a compensation grant of 25,270 shares of Common Stock in the form of restricted stock units that vest on May 7, 2027. The award carries no purchase price and increases his direct holdings to 85,821 shares, reflecting routine equity-based board compensation rather than an open-market share purchase.

Insider Trade Summary

1 transaction reported

Mixed 1 txn

Insider SEVERINO MICHAEL

Role null

Type	Security	Shares	Price	Value
Grant/Award	Common Stock	25,270	$0.00	--

Holdings After Transaction: Common Stock — 85,821 shares (Direct, null)

Footnotes (1)

1. [object Object]

Key Figures

RSU grant size: 25,270 shares Grant price: $0.00 per share Post-transaction holdings: 85,821 shares +1 more

4 metrics

RSU grant size 25,270 shares Restricted stock units granted on May 7, 2026

Grant price $0.00 per share Reported transaction price per share for RSU grant

Post-transaction holdings 85,821 shares Total Common Stock directly held after the grant

Vesting date May 7, 2027 Restricted stock units vest on this date

Key Terms

restricted stock units, Form 4, grant, award, or other acquisition

3 terms

restricted stock units financial

"Reflects a grant of restricted stock units that vests on May 07, 2027."

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.

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.

grant, award, or other acquisition financial

"transaction_code_description: Grant, award, or other acquisition"

Form 4 Insider Transactions: What Each Field Means →

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^*

SEVERINO MICHAEL

(Last) (First) (Middle)

RADNOR CORPORATE CENTER, BUILDING ONE,

SUITE 200, 100 MATSONFORD ROAD

(Street)

RADNOR PENNSYLVANIA 19087

(City) (State) (Zip)

UNITED STATES

(Country)

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

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

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

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
05/07/2026

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	05/07/2026		A(1)		25,270	A	$0	85,821	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. Reflects a grant of restricted stock units that vests on May 07, 2027.

Remarks:

	/s/ Scott Baker, as Attorney-in-Fact	05/11/2026
	** 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)

FAQ

What did Avantor (AVTR) director Michael Severino report in this Form 4?

Michael Severino reported receiving 25,270 restricted stock units as equity compensation. These units represent Common Stock awards granted at no cost, increasing his direct holdings to 85,821 shares after the transaction, according to the Form 4 filing data.

Is Michael Severino’s Avantor (AVTR) Form 4 a stock purchase or a grant?

The Form 4 reflects a grant, not an open-market stock purchase. Severino received 25,270 restricted stock units as a compensation award, at a reported price of $0.00 per share, rather than buying existing shares in the market.

When do Michael Severino’s 25,270 Avantor (AVTR) restricted stock units vest?

The 25,270 restricted stock units granted to Michael Severino vest on May 7, 2027. Vesting means the units convert into shares of Common Stock over time, subject to continued service and any other conditions described in Avantor’s governing equity plans.

How many Avantor (AVTR) shares does Michael Severino hold after this Form 4 transaction?

After the reported grant, Michael Severino directly holds 85,821 shares of Avantor Common Stock. This total includes the effect of the 25,270-share restricted stock unit award disclosed in the Form 4, as stated in the post-transaction holdings figure.

Does the Avantor (AVTR) Form 4 for Michael Severino indicate any stock sales?

The Form 4 does not show any stock sales by Michael Severino. It reports only an acquisition via a grant of 25,270 restricted stock units, categorized as a grant or award acquisition transaction with no corresponding disposition of shares.