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Form 8-K

sec.gov

8-K — NEWMARKET CORP

Accession: 0001193125-26-173975

Filed: 2026-04-23

Period: 2026-04-23

CIK: 0001282637

SIC: 2860 (INDUSTRIAL ORGANIC CHEMICALS)

Item: Submission of Matters to a Vote of Security Holders

Item: Other Events

Item: Financial Statements and Exhibits

Documents

8-K — d127448d8k.htm (Primary)

EX-99.1 (d127448dex991.htm)

XML — IDEA: XBRL DOCUMENT (R1.htm)

8-K

8-K (Primary)

Filename: d127448d8k.htm · Sequence: 1

8-K

NEWMARKET CORP false 0001282637 0001282637 2026-04-23 2026-04-23 0001282637 stpr:VA 2026-04-23 2026-04-23

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): April 23, 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 5.07

Submission of Matters to a Vote of Security Holders.

On April 23, 2026, NewMarket Corporation (the “Company”) held its 2026 Annual Meeting of Shareholders. The proposals listed below were submitted to a vote of shareholders and are described in the Company’s Proxy Statement (the “Proxy Statement”) filed with the Securities and Exchange Commission on March 12, 2026. The results are as follows:

1. The shareholders elected each of the Company’s seven (7) nominees to serve on its Board of Directors for the ensuing year, as set forth below:

Director

Votes For

Votes

Against

Abstentions

Broker Non-

Votes

Mark M. Gambill

8,067,953

165,626

4,760

479,686

Thomas E. Gottwald

7,991,028

242,750

4,561

479,686

H. Hiter Harris, III

7,909,713

323,657

4,969

479,686

Bruce R. Hazelgrove, III

8,042,017

191,307

5,015

479,686

James E. Rogers

8,094,686

138,629

5,024

479,686

Lilo S. Ukrop

8,133,302

99,231

5,806

479,686

Ting Xu

8,188,412

44,401

5,526

479,686

2. The shareholders ratified the appointment of PricewaterhouseCoopers LLP as independent registered public accounting firm for the fiscal year ending December 31, 2026, as set forth below:

Votes For

Votes

Against

Abstentions

8,415,620

299,420

2,985

3. The shareholders approved, on an advisory basis, the Company’s executive compensation program for its named executive officers disclosed in the Proxy Statement, as set forth below:

Votes For

Votes

Against

Abstentions

Broker Non-

Votes

8,002,241

226,974

9,124

479,686

Item 8.01

Other Events.

On April 23, 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 July 1, 2026, to Company shareholders of record at the close of business on June 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 April 23, 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: April 23, 2026

NewMarket Corporation

By:

/s/ Timothy K. Fitzgerald

Name:

Timothy K. Fitzgerald

Title:

Vice President and Chief Financial Officer

EX-99.1

EX-99.1

Filename: d127448dex991.htm · Sequence: 2

EX-99.1

EXHIBIT 99.1

NEWMARKET CORPORATION ANNOUNCES QUARTERLY DIVIDEND

Richmond, VA, April 23, 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 July 1, 2026, to NewMarket shareholders of record at the close of business on June 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 UltraPure 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 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 upon request.

You should keep in mind that 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, you should keep in mind that 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

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