Avantor (AVTR) assigns Sanjeev Mehra to key board committees

Rhea-AI Filing Summary

Avantor, Inc. filed an amended report to update the board responsibilities of director Sanjeev Mehra. When he was elected to the board effective December 4, 2025, his committee assignments had not yet been decided. The amendment discloses that, effective February 19, 2026, Mehra joined both the Compensation & Human Resources Committee and the Audit & Finance Committee. The filing also includes an exhibit providing the cover page formatted in Inline XBRL.

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UNITED STATES SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K/A

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

Date of Report (Date of earliest event reported): December 4, 2025

Avantor, Inc.

(Exact name of registrant as specified in its charter)

Delaware			001-38912			82-2758923
(State or other jurisdiction of incorporation)			(Commission File Number)			(I.R.S. Employer Identification No.)

Radnor Corporate Center, Building One, Suite 200

100 Matsonford Road

Radnor, Pennsylvania 19087

(Address of principal executive offices, including zip code)

(610) 386-1700

(Registrant’s telephone number, including area code)

Not Applicable

(Former name or former address, if changed since last report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

☐    Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐    Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐    Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

☐    Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act:

Title of each class

Trading Symbol(s)

Name of each exchange on which registered

Common Stock, $0.01 par value

AVTR

New York Stock Exchange

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter). ☐ Emerging growth company

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Item 5.02    Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers.

On December 4, 2025, Avantor, Inc. (the “Company”) filed a Current Report on Form 8-K announcing the election of Sanjeev Mehra as a director of the Company effective December 4, 2025. The prior report did not include the committees of the Board of Directors that Mr. Mehra was named to because the Board had not determined on which committees of the Board Mr. Mehra would serve. This Form 8-K/A is being filed for the purpose of providing this information.

Effective February 19, 2026, Mr. Mehra was appointed to serve on each of the Compensation & Human Resources Committee and the Audit & Finance Committee.

Item 9.01    Financial Statements and Exhibits.

(d) Exhibits

Exhibit No.						Description
104						The cover page from this Current Report on Form 8-K/A, formatted in Inline XBRL

SIGNATURE

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

			Avantor, Inc.
Date: February 25, 2026			By:			/s/ Claudius Sokenu
						Name:			Claudius Sokenu
						Title:			Executive Vice President, Chief Legal and Compliance Officer and Secretary (Duly Authorized Officer)

FAQ

What does Avantor (AVTR) disclose in this 8-K/A filing?

Avantor discloses updated board committee assignments for director Sanjeev Mehra. The amendment clarifies that Mehra has been appointed to the Compensation & Human Resources Committee and the Audit & Finance Committee, with these roles effective February 19, 2026.

Which board committees did Avantor (AVTR) appoint Sanjeev Mehra to?

Avantor appointed Sanjeev Mehra to its Compensation & Human Resources Committee and its Audit & Finance Committee. These committee roles are in addition to his existing position as a director and became effective on February 19, 2026, according to the filing.

Why did Avantor (AVTR) file an amended 8-K regarding Sanjeev Mehra?

Avantor filed the amendment because the original report announcing Sanjeev Mehra’s election did not specify his committee assignments. The board had not yet decided them, and this 8-K/A was filed to provide the final committee information once it was determined.

When did Avantor (AVTR) make Sanjeev Mehra’s committee appointments effective?

The committee appointments for Sanjeev Mehra became effective on February 19, 2026. This effective date applies to his roles on both the Compensation & Human Resources Committee and the Audit & Finance Committee, as specified in the amended report.

Does this Avantor (AVTR) 8-K/A include new financial results?

No, this 8-K/A focuses on governance information rather than financial performance. It updates board committee assignments for director Sanjeev Mehra and includes an exhibit with the cover page formatted in Inline XBRL, but does not present earnings or financial results.

What exhibit is included with Avantor’s (AVTR) amended 8-K?

The filing includes Exhibit 104, described as the cover page from the amended report formatted in Inline XBRL. This exhibit provides a machine-readable version of the cover page information for regulatory and reporting purposes.

Filing Exhibits & Attachments

4 documents

Other Documents

• EX-101 XBRL TAXONOMY EXTENSION SCHEMA DOCUMENT 2.2 KB
• EX-101 XBRL TAXONOMY EXTENSION DEFINITION LINKBASE DOCUMENT 17.1 KB
• EX-101 XBRL TAXONOMY EXTENSION LABEL LINKBASE DOCUMENT 29.1 KB
• EX-101 XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE DOCUMENT 17.4 KB