NewMarket Corporation (NEU) sets $3.00 quarterly dividend payable October 1, 2026

Rhea-AI Filing Summary

NewMarket Corporation reported that its Board of Directors declared a quarterly cash dividend of $3.00 per share on its common stock. The dividend is payable on October 1, 2026 to shareholders of record at the close of business on September 15, 2026.

NewMarket operates through subsidiaries Afton Chemical and Ethyl, which supply chemical additives for petroleum products, American Pacific Corporation, which manufactures specialty materials for solid rocket motors, and Calca Solutions, a producer of Ultra Pure and high-purity hydrazine for aerospace and defense applications. The company also includes the usual cautionary language that some statements are “forward-looking” under the Private Securities Litigation Reform Act of 1995.

8-K Event Classification

2 items: 8.01, 9.01

2 items

Item 8.01 Other Events Other

Voluntary disclosure of events the company deems important to shareholders but not covered by other items.

Item 9.01 Financial Statements and Exhibits Exhibits

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

Key Figures

Quarterly dividend: $3.00 per share Dividend record date: September 15, 2026 Dividend payment date: October 1, 2026

3 metrics

Quarterly dividend $3.00 per share Dividend on common stock declared by the Board of Directors

Dividend record date September 15, 2026 Shareholders of record at close of business on this date receive the dividend

Dividend payment date October 1, 2026 Scheduled payment date for the $3.00 per-share quarterly dividend

Key Terms

forward-looking statements, Private Securities Litigation Reform Act of 1995, Ultra Pure and high-purity hydrazine

3 terms

forward-looking statements regulatory

"Some of the information contained in this press release constitutes forward-looking statements"

Forward-looking statements are predictions or plans that companies share about what they expect to happen in the future, like estimating sales or profits. They matter because they help investors understand a company's outlook, but since they are based on guesses and assumptions, they can sometimes be wrong.

Private Securities Litigation Reform Act of 1995 regulatory

"forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995"

Ultra Pure and high-purity hydrazine technical

"Calca is the nation’s leading producer of Ultra Pure and high-purity hydrazine"

FAQ

What dividend did NewMarket Corporation (NEU) declare on August 13, 2026?

NewMarket Corporation declared a quarterly dividend of $3.00 per share on its common stock. The dividend reflects the Board’s decision on capital returns and will be paid to shareholders of record on the announced record date.

When is the record date for NewMarket (NEU) $3.00 dividend?

The record date for NewMarket’s $3.00 per share quarterly dividend is September 15, 2026. Shareholders recorded as of the close of business on that date will be entitled to receive the dividend.

When will NewMarket (NEU) pay its announced $3.00 quarterly dividend?

NewMarket will pay the $3.00 per share quarterly dividend on October 1, 2026. Holders must be shareholders of record as of September 15, 2026, to receive this dividend payment.

What businesses does NewMarket Corporation (NEU) operate?

NewMarket is a holding company with subsidiaries including Afton Chemical, Ethyl, American Pacific Corporation, and Calca Solutions. These businesses provide fuel and lubricant additives, specialty materials for solid rocket motors, and Ultra Pure and high-purity hydrazine.

Does the NewMarket (NEU) dividend announcement include forward-looking statements?

Yes. The announcement includes forward-looking statements under the Private Securities Litigation Reform Act of 1995. NewMarket notes that actual results may differ due to factors such as raw material availability, regulation, competition, and macroeconomic and geopolitical risks.

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Available on EDGAR 08/13/2026 - 05:05 PM Accepted by SEC EDGAR 08/13/2026 - 05:05 PM Learn about SEC filing dates

NEWMARKET CORP false 0001282637 0001282637 2026-08-13 2026-08-13 0001282637 stpr:VA 2026-08-13 2026-08-13

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): August 13, 2026

NEWMARKET CORPORATION

(Exact name of registrant as specified in its charter)

Virginia		1-32190		20-0812170
(State or other jurisdiction of incorporation)		(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, without 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 or Rule 12b-2 of the Securities Exchange Act of 1934.

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 8.01 Other Events.

On August 13, 2026, the Company issued a press release reporting that the Company’s Board of Directors had declared a dividend of $3.00 per share of the Company’s common stock, payable on October 1, 2026, to Company shareholders of record at the close of business on September 15, 2026. A copy of this press release is attached hereto as Exhibit 99.1 and incorporated herein by reference.

Item 9.01 Financial Statements and Exhibits.

(d) Exhibits.

Exhibit 99.1		Press release regarding the quarterly dividend issued by the Company on August 13, 2026
Exhibit 104		Cover Page Interactive Data File (Embedded within the inline XBRL document)

SIGNATURES

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: August 13, 2026

NewMarket Corporation
By:		/s/ Timothy K. Fitzgerald
Name:		Timothy K. Fitzgerald
Title:		Vice President and Chief Financial Officer

EXHIBIT 99.1

NEWMARKET CORPORATION ANNOUNCES QUARTERLY DIVIDEND

Richmond, VA, August 13, 2026 - The Board of Directors of NewMarket Corporation (NYSE: NEU) declared a quarterly dividend in the amount of $3.00 per share on the common stock of the Corporation. The dividend is payable October 1, 2026, to NewMarket shareholders of record at the close of business on September 15, 2026.

NewMarket Corporation is a holding company operating through its subsidiaries, Afton Chemical Corporation (Afton), Ethyl Corporation (Ethyl), American Pacific Corporation (AMPAC) and Calca Solutions, LLC (Calca). The Afton and Ethyl companies develop, manufacture, blend, and deliver chemical additives that enhance the performance of petroleum products. AMPAC is a manufacturer of specialty materials primarily used in solid rocket motors for the aerospace and defense industries. Calca is the nation’s leading producer of Ultra Pure and high-purity hydrazine – essential, mission-critical propellants that enable advanced aerospace and defense applications. The NewMarket family of companies has a long-term commitment to its people, to safety, to providing innovative solutions for its customers, and to making the world a better place.

Some of the information contained in this press release constitutes forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995. Although NewMarket’s management believes its expectations are based on reasonable assumptions within the bounds of its knowledge of its business and operations, there can be no assurance that actual results will not differ materially from expectations.

Factors that could cause actual results to differ materially from expectations include, but are not limited to, the availability of raw materials and distribution systems; disruptions at production facilities, including single-sourced facilities; hazards common to chemical businesses; the ability to respond effectively to technological changes in our industries; failure to protect our intellectual property rights; sudden, sharp, or prolonged raw material price increases; competition from other manufacturers; current and future governmental regulations; the loss of significant customers; termination or changes to contracts with contractors and subcontractors of the U.S. government or directly with the U.S. government; failure to attract and retain a highly-qualified workforce; an information technology system failure or security breach; the occurrence or threat of extraordinary events, including natural disasters, terrorist attacks, wars or other conflicts and health-related epidemics; risks related to operating outside of the United States, including tariffs and trade policy; political, economic, and regulatory factors concerning our products; the impact of substantial indebtedness on our operational and financial flexibility; the impact of fluctuations in foreign exchange rates; resolution of environmental liabilities or legal proceedings; limitation of our insurance coverage; our inability to realize expected benefits from investment in our infrastructure or from acquisitions, or our inability to successfully integrate acquisitions into our business; the underperformance of our pension assets resulting in additional cash contributions to our pension plans; and other factors detailed from time to time in the reports that NewMarket files with the Securities and Exchange Commission, including the risk factors in Part I, Item 1A. “Risk Factors” of our Annual Report on Form 10-K for the year ended December 31, 2025, which is available to shareholders at www.newmarket.com.

Any forward-looking statement made by NewMarket in the foregoing discussion speaks only as of the date on which such forward-looking statement is made. New risks and uncertainties arise from time to time, and it is impossible for us to predict these events or how they may affect us. We have no duty to, and do not intend to, update or revise the forward-looking statements in this discussion after the date hereof, except as may be required by law. In light of these risks and uncertainties, the events described in any forward-looking statement made in this discussion, or elsewhere, might not occur.

CONTACTS:

Timothy K. Fitzgerald

Investor Relations

Phone: 804.788.5555

Email: investorrelations@newmarket.com

Filing Exhibits & Attachments

5 documents

Press Releases

• EX-99.1 EX-99.1 6.1 KB

Other Documents

• EX-101 XBRL TAXONOMY EXTENSION SCHEMA 3.8 KB
• EX-101 XBRL TAXONOMY EXTENSION DEFINITION LINKBASE 12.4 KB
• EX-101 XBRL TAXONOMY EXTENSION LABEL LINKBASE 20.5 KB
• EX-101 XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE 13.3 KB