UNITED STATES SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

CURRENT REPORT

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

Date of Report (Date of earliest event reported): ~~February~~March 1126, 2026

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))

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

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

Title of each class

Trading Symbol

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 25.02. ~~Results~~Departure of ~~Operations~~Directors ~~and~~or ~~Financial~~Certain ~~Condition~~Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers.

On ~~February~~March 1126, 2026, Mr. R. Brent Jones notified Avantor, Inc. (the “Company”) ~~issued~~of ahis ~~press~~decision ~~release~~to ~~announcing~~resign ~~its~~as ~~financial~~the ~~results~~Company’s ~~for~~Executive ~~the~~Vice ~~quarter~~President and ~~year~~Chief ~~ended~~Financial ~~December 31,~~Officer ~~2025,~~(“CFO”) asto ~~well~~join asa company outside the life sciences industry. While a ~~realignment~~final ofdeparture ~~its~~date ~~reportable~~has ~~business~~not ~~segments~~been set, Mr. AJones’ ~~copy~~employment agreement requires him to provide 90 days’ notice before the effectiveness of his resignation, unless waived by the ~~press~~Company. ~~release~~Following isMr. ~~attached~~Jones’ ~~hereto~~departure, the Company anticipates appointing Steven Eck, the Company’s Senior Vice President and Chief Accounting Officer as ~~Exhibit~~interim 99CFO of the Company.1 Mr. Eck will continue to serve in his current role and isretain ~~incorporated~~his ~~herein~~responsibilities byas ~~reference~~the Company’s principal accounting officer while the Company undertakes an executive search process for a permanent CFO.

Mr. Eck, 50, joined the Company in 2019 as Senior Vice President and Chief Accounting Officer. Before joining the Company, Mr. Eck previously served as the principal accounting officer of CSS Industries, Inc., a consumer products company, from June 2018 to April 2019. Prior to joining CSS Industries in 2018, Mr. Eck served as a Vice President of Finance and in other senior level finance positions at Fidelity National Information Systems, a financial technology and payments company, between 2014 and 2018. Mr. Eck also served in senior accounting roles at Gardner Denver, Inc., an industrial manufacturer, and at General Electric Company, a high-tech industrial company, between 2010 and 2014. Mr. Eck began his professional career in 2001 at Deloitte & Touche LLP. Mr. Eck earned a B.A. in accounting from Muhlenberg College and is a Certified Public Accountant.

Mr. Eck does not have any family relationships with any of the Company’s directors or executive officers, there are no arrangements or understandings between Mr. Eck and any other persons pursuant to which she was selected as an officer, and there are no transactions between Mr. Eck and the Company that would be required to be reported under Item 404(a) of Regulation S-K.

In connection with Mr. Eck’s appointment, the Company entered into amended compensation arrangements with Mr. Eck providing the following additional compensation that is commensurate with his additional duties as interim CFO: a payment of $45,000 per month for each month Mr. Eck serves in this capacity, and a one-time special award of restricted stock units with a value of $250,000 which will vest ratably over three years from the grant date.

Item 7.01. Regulation FD Disclosure.

On ~~February~~April 111, 2026, the Company issued a press release announcing Mr. Jones’ planned departure. A copy of the press release ~~described~~is infurnished ~~Item~~herewith 2as Exhibit No.02 ~~above~~99 to this Current Report on Form 8-K, ~~which~~and ~~also~~shall ~~announced~~not abe ~~realignment~~deemed filed for the purposes of Section 18 of the ~~Company’s~~Securities ~~reportable~~Exchange ~~business~~Act ~~segments.~~of ~~The~~1934, ~~Company~~as ~~will~~amended ~~hold~~(the a“Exchange ~~conference~~Act”), ~~call~~or otherwise subject to ~~discuss~~the ~~these~~liabilities ~~developments~~of that Section and ~~its~~shall ~~financial~~not ~~results~~be ~~for~~deemed to be incorporated by reference into any filing by the ~~quarter~~Company ~~and~~under ~~year~~the ~~ended~~Securities ~~December~~Act 31of 1933, ~~2025~~as atamended, ~~8:00~~or ~~a.m.~~the ETExchange onAct, ~~February~~except ~~11,~~as ~~2026~~shall be expressly set forth by specific reference in such a filing.

~~Effective~~Item in9.01. Financial ~~the~~Statements ~~first quarter of 2026, the Company is realigning its business units into two reportable segments: VWR Distribution & Services~~ and ~~Bioscience & Medtech Products~~Exhibits.

To(d) ~~assist investors in understanding the effects of these segment reporting changes on the Company’s historical results, the Company is furnishing herewith as Exhibit 99~~Exhibits.2 unaudited supplemental recast financial information for each quarter of fiscal year 2025 and for the fiscal years ended December 31, 2023, 2024, and 2025, reflecting the segment changes described above. The revised segment reporting will be reflected in the Company’s financial statements beginning with its Quarterly Report on Form 10‑Q for the quarter ending March 31, 2026.

The information in this Item 2.02 and Item 7.01 of this Current Report on Form 8‑K, including Exhibits 99.1 and 99.2, is being “furnished” pursuant to the Securities Exchange Act of 1934, as amended (the “Exchange Act”), and shall not be deemed to be “filed” for purposes of Section 18 of the Exchange Act, or otherwise subject to the liabilities of that section, nor shall it be incorporated by reference into any filing under the Securities Act of 1933, as amended, except as shall be expressly set forth by specific reference in such filing.


Exhibit No.						Description
99						Press Release, dated April 1, 2026
104						The cover page from this Current Report on Form 8-K, formatted in Inline XBRL

Item 9.01 Financial Statements and Exhibits.

Exhibit No.						Description
99.1						Avantor, Inc. Earnings Press Release dated February 11, 2026
99.2						Unaudited Supplemental Summary Financial Information
104						Cover Page Interactive File (the cover page tags are embedded within the Inline XBRL document)

SIGNATURE

	Avantor, Inc.
Date: February 11, 2026	By:	/s/ Steven Eck
		Name:	Steven Eck
		Title:	Senior Vice President and Chief Accounting Officer (Principal Accounting Officer)

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: April 1, 2026	By:	/s/ Claudius Sokenu
		Name:	Claudius Sokenu
		Title:	Executive Vice President, Chief Legal and Compliance Officer and Secretary

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