NEU files 8-K Item 2.02 with Q3 2025 earnings release (Ex. 99.1)

Rhea-AI Filing Summary

NewMarket Corporation (NEU) furnished an 8‑K announcing its third‑quarter 2025 results press release. The company reported that it issued a press release covering earnings for the quarter ended September 30, 2025, which is attached as Exhibit 99.1.

The disclosure is provided under Item 2.02, Results of Operations and Financial Condition, and—under General Instruction B.2—is furnished, not filed. As stated, it is not subject to Section 18 liability and is not incorporated by reference into other filings unless specifically referenced.

8-K Event Classification

2 items: 2.02, 9.01

2 items

Item 2.02 Results of Operations and Financial Condition Financial

Disclosure of earnings results, typically an earnings press release or preliminary financials.

Item 9.01 Financial Statements and Exhibits Exhibits

Financial statements, pro forma financial information, and exhibit attachments filed with this report.

Understanding 8-K Material Events →

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 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): October 30, 2025

NEWMARKET CORPORATION

(Exact name of registrant as specified in its charter)

Virginia

1-32190

20-0812170

(State or other jurisdiction of incorporation or organization)

(Commission File Number)

(IRS Employer Identification No.)

330 South Fourth Street

Richmond,

Virginia

23219

(Address of principal executive offices)

(Zip Code)

Registrant’s telephone number, including area code: (804) 788-5000  

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, with no par value			NEU			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 (Section 230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (Section 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 2.02.    Results of Operations and Financial Condition

On October 30, 2025, NewMarket Corporation (the “Company”) issued a press release regarding its earnings for the third quarter ended September 30, 2025. A copy of this press release is furnished as Exhibit 99.1 hereto and incorporated herein by reference.

In accordance with General Instruction B.2 of Form 8-K, the information in Item 2.02 of this Current Report on Form 8-K, including Exhibit 99.1, shall not be deemed “filed” for the purposes of Section 18 of the Securities Exchange Act of 1934, as amended, or otherwise subject to the liability of that section, nor shall it be deemed incorporated by reference in any filing under the Securities Act of 1933, as amended, except as shall be expressly set forth by specific reference in such a filing.

Item 9.01.     Financial Statements and Exhibits

(d) Exhibits.

Exhibit 99.1			Press release regarding earnings issued by the Company on October 30, 2025.
Exhibit 104			Cover Page Interactive Data File (embedded within the Inline XBRL document)

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.

Date: October 30, 2025

NEWMARKET CORPORATION
By:						/s/ Timothy K. Fitzgerald
						Timothy K. Fitzgerald
						Vice President and Chief Financial Officer

FAQ

What did NewMarket (NEU) announce in this 8-K?

The company furnished a press release reporting its earnings for the third quarter ended September 30, 2025, attached as Exhibit 99.1.

Which 8-K item applies to NewMarket’s update?

The update is under Item 2.02, Results of Operations and Financial Condition.

Is the NewMarket Q3 2025 press release considered filed?

No. Under General Instruction B.2, the information, including Exhibit 99.1, is furnished, not filed.

Does the furnished information carry Section 18 liability?

No. The company states it is not subject to Section 18 liability.

Where can I find the Q3 2025 earnings details?

They are contained in Exhibit 99.1 to the 8‑K.

What exhibits are included with this 8-K?

Exhibit 99.1 (earnings press release) and Exhibit 104 (Cover Page Interactive Data File).