# EDGAR Filing Document

**Accession Number:** 0001282637
**File Stem:** 0001193125-26-006618
**Filing Date:** 2026-1
**Character Count:** 7894
**Document Hash:** ccea80204d56302cfbc65d53ca87a8b4
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001193125-26-006618.hdr.sgml**: 20260107

**ACCESSION NUMBER**: 0001193125-26-006618

**CONFORMED SUBMISSION TYPE**: SCHEDULE 13D/A

**PUBLIC DOCUMENT COUNT**: 1

**FILED AS OF DATE**: 20260107

**DATE AS OF CHANGE**: 20260107

**SUBJECT COMPANY**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** NEWMARKET CORP
- **CENTRAL INDEX KEY:** 0001282637
- **STANDARD INDUSTRIAL CLASSIFICATION:** INDUSTRIAL ORGANIC CHEMICALS [2860]
- **ORGANIZATION NAME:** 08 Industrial Applications and Services
- **EIN:** 000000000
- **STATE OF INCORPORATION:** VA
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** SCHEDULE 13D/A
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 005-80367
- **FILM NUMBER:** 26516760

**BUSINESS ADDRESS:**
- **STREET 1:** 330 S FOURTH ST
- **STREET 2:** PO BOX 2189
- **CITY:** RICHMOND
- **STATE:** VA
- **ZIP:** 23218-2189
- **BUSINESS PHONE:** 804-788-5000

**MAIL ADDRESS:**
- **STREET 1:** 330 S FOURTH ST
- **STREET 2:** PO BOX 2189
- **CITY:** RICHMOND
- **STATE:** VA
- **ZIP:** 23218-2189
**FILED BY**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** GOTTWALD BRUCE C
- **CENTRAL INDEX KEY:** 0000919561

**ORGANIZATION NAME:**
- **STATE OF INCORPORATION:** VA
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** SCHEDULE 13D/A

**MAIL ADDRESS:**
- **STREET 1:** 120 TREDEGAR ST
- **CITY:** RICHMOND
- **STATE:** VA
- **ZIP:** 23219

### UNITED STATES SECURITIES AND EXCHANGE COMMISSION
**Washington, D.C. 20549**

## SCHEDULE 13D

### Under the Securities Exchange Act of 1934

**(Amendment No. 9)**

**NEWMARKET CORPORATION**

*(Name of Issuer)*

**COMMON STOCK**

*(Title of Class of Securities)*

**651587107**

*(CUSIP Number)*

**BRUCE C. GOTTWALD**<br>330 SOUTH FOURTH STREET<br>RICHMOND VA 23219<br>804-788-5000

*(Name, Address and Telephone Number of Person Authorized to Receive Notices and Communications)*

**12/09/2025**

*(Date of Event Which Requires Filing of this Statement)*

| **CUSIP No.** | **651587107** |

---

| | | | |
|:--|:--|:--|:--|
| 1 | Name of reporting person<br>**BRUCE C. GOTTWALD** | Name of reporting person<br>**BRUCE C. GOTTWALD** | |
| 2 | Check the appropriate box if a member of a Group (See Instructions)<br>[ ] (a)<br>[x] (b) | Check the appropriate box if a member of a Group (See Instructions)<br>[ ] (a)<br>[x] (b) | |
| 3 | SEC use only | SEC use only | |
| 4 | Source of funds (See Instructions)<br>**—** | Source of funds (See Instructions)<br>**—** | |
| 5 | Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)<br>[ ] | Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)<br>[ ] | |
| 6 | Citizenship or place of organization<br>**X1** | Citizenship or place of organization<br>**X1** | |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 7 | Sole Voting Power<br>**910741.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 8 | Shared Voting Power<br>**37988.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 9 | Sole Dispositive Power<br>**910741.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 10 | Shared Dispositive Power<br>**37988.00** |
| 11 | Aggregate amount beneficially owned by each reporting person<br>**948729.00** | Aggregate amount beneficially owned by each reporting person<br>**948729.00** | |
| 12 | Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)<br>[x] | Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)<br>[x] | |
| 13 | Percent of class represented by amount in Row (11)<br>**10.1%** | Percent of class represented by amount in Row (11)<br>**10.1%** | |
| 14 | Type of Reporting Person (See Instructions)<br>**IN** | Type of Reporting Person (See Instructions)<br>**IN** | |

---

**Item 1. Security and Issuer**

**(a) Title of Class of Securities:**
COMMON STOCK

**(b) Name of Issuer:**
NEWMARKET CORPORATION

**(c) Address of Issuer's Principal Executive Offices:**
330 SOUTH FOURTH STREET, RICHMOND, VA, 23219

Explanatory Note: This Amendment No.9 amends and supplements the statement on Schedule 13D initially filed with the Securities and Exchange Commission (the "SEC") on February 14, 2006 by Bruce C. Gottwald (the "Reporting Person"), as previously amended by Amendment No. 1 thereto filed with the SEC on August 18, 2006, by Amendment No. 2 thereto filed with the SEC on February 16, 2007, by Amendment No. 3 thereto filed with the SEC on May 27, 2008, by Amendment No. 4 thereto filed with the SEC on August 27, 2008, by Amendment No. 5 thereto filed with the SEC on July 8, 2010, by Amendment No. 6 filed with the SEC on July 15, 2014, by Amendment No. 7 filed with the SEC on October 29, 2021 and by Amendment No. 8 filed with the SEC on November 27, 2024, with respect to shares of common stock, without par value (the "Common Stock"), of NewMarket Corporation (the "Issuer").

**Item 4. Purpose of Transaction**

Item 4 is hereby amended and restated as follows:

The Reporting Person intends to hold for investment the shares of Common Stock that he beneficially owns and, aside from routine estate planning and family gift transactions, has no present plans to acquire or dispose of, or to cause any other person to acquire or dispose of, shares of Common Stock.  The Reporting Person does, however, reserve the right to buy or sell shares of Common Stock from time to time.

Except as indicated above, the Reporting Person has no present plans or proposals which relate to, or would result in, any one or more of the matters described in subparagraphs (a) through (j) of Item 4 to Schedule 13D.

**Item 5. Interest in Securities of the Issuer**

**(a)**
Item 5(a) is hereby amended and restated as follows:

As of December 9, 2025, the Reporting Person beneficially owns 948,729 shares of Common Stock, which represents approximately 10.1% of the outstanding shares of Common Stock.  This percentage calculation is based on a total number of outstanding shares of Common Stock of 9,397,122 as of November 30, 2025, which number was provided to the Reporting Person by the Issuer.

The number of shares reported as beneficially owned above does not include an aggregate of 944,454 (10.1%) shares of Common Stock beneficially owned by the adult sons of the Reporting Person or an aggregate of 272,835 (2.9%) shares of Common Stock beneficially owned by three separate trusts of which each of the adult sons of the Reporting Person and his wife are co-trustees.  The Reporting Person and his adult sons have no agreement with respect to the acquisition, retention, disposition or voting of shares of Common Stock.

**(b)**
Item 5(b) is hereby amended and restated as follows:

The Reporting Person has sole voting and dispositive power with respect to 910,741 of the shares of Common Stock described in Item 5(a) above.  The Reporting Person has shared voting and dispositive power with respect to 37,988 of the shares of Common Stock described in Item 5(a) above, which includes 18,731 shares of Common Stock held by the Reporting Person's wife and 19,257 shares held by a charitable foundation for which the Reporting Person serves as a director.  The Reporting Person disclaims beneficial ownership of the shares held by his wife and the charitable foundation.

**(c)**
Item 5(c) is hereby amended and restated as follows: The Reporting Person has not engaged in any transactions in the Common Stock in the past 60 days.

### SIGNATURE

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

**Reporting Person:** BRUCE C. GOTTWALD

**Signature:** /S/ BRUCE C. GOTTWALD

**Name/Title:** BRUCE C. GOTTWALD

**Date:** 01/07/2026