[SCHEDULE 13G/A] NewMarket Corporation SEC Filing

Rhea-AI Filing Summary

The London Company reports beneficial ownership of 553,479 shares of NewMarket (NEU), representing 5.87% of the outstanding common stock. The filing shows sole voting power over all 553,479 shares, sole dispositive power over 524,026 shares, and shared dispositive power of 827 shares. The statement includes a certification that the securities are held in the ordinary course of business and were not acquired to change or influence control of the issuer. This is a routine institutional disclosure of a >5% position.

Positive

• Beneficial ownership of 553,479 shares, representing 5.87% of NewMarket's common stock
• Sole voting power reported over all 553,479 beneficially owned shares
• Certification that holdings are held in the ordinary course and not to influence control

Negative

• None.

Insights

Financial Analyst

TL;DR The London Company discloses a material >5% stake in NewMarket with full voting authority on the reported shares.

The filing documents an institutional position of 553,479 shares (5.87%). Sole voting power equals the full beneficial amount, while dispositive power is split between sole control of 524,026 shares and shared control of 827 shares. The disclosure meets regulatory thresholds for transparency and includes an explicit certification that the holdings are in the ordinary course of business and not intended to influence control. For analysts, the key fact is the size and the voting alignment rather than changes in underlying operations or financials.

Corporate Governance Expert

TL;DR Disclosure shows voting authority and a formal certification against control intent, important for governance records but neutral in itself.

The entry highlights that The London Company holds sole voting power over the full reported beneficial position (553,479 shares) while dispositive power is slightly different (524,026 sole, 827 shared). The filing’s certification that shares are not held to change or influence control is material to governance monitoring and shareholder records. This is a standard compliance disclosure that should be noted by governance teams but does not by itself indicate a change in board control or strategy.

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

(Amendment No. 17)

NEWMARKET CORP

(Name of Issuer)

Common Stock, with no par value

(Title of Class of Securities)

651587107

(CUSIP Number)

06/30/2025

(Date of Event Which Requires Filing of this Statement)

Check the appropriate box to designate the rule pursuant to which this Schedule is filed:

Rule 13d-1(b)

Rule 13d-1(c)

Rule 13d-1(d)

SCHEDULE 13G

CUSIP No. 651587107

1

Names of Reporting Persons

The London Company

2

Check the appropriate box if a member of a Group (see instructions)

(a)
(b)

3

Sec Use Only

4

Citizenship or Place of Organization

VIRGINIA

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 553,479.00
6	Shared Voting Power 0.00
7	Sole Dispositive Power 524,026.00
8	Shared Dispositive Power 827.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

553,479.00

10

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

11

Percent of class represented by amount in row (9)

5.87 %

12

Type of Reporting Person (See Instructions)

IA

SCHEDULE 13G

Item 1.
(a)	Name of issuer: NEWMARKET CORP
(b)	Address of issuer's principal executive offices: 330 S FOURTH ST, PO BOX 2189, RICHMOND, VA, 23218-2189
Item 2.
(a)	Name of person filing: The London Company
(b)	Address or principal business office or, if none, residence: 1800 Bayberry Court, Suite 301, Richmond, Virginia 23226
(c)	Citizenship: Virginia
(d)	Title of class of securities: Common Stock, with no par value
(e)	CUSIP No.: 651587107
Item 3.	If this statement is filed pursuant to §§ 240.13d-1(b) or 240.13d-2(b) or (c), check whether the person filing is a:
(a)	Broker or dealer registered under section 15 of the Act (15 U.S.C. 78o);
(b)	Bank as defined in section 3(a)(6) of the Act (15 U.S.C. 78c);
(c)	Insurance company as defined in section 3(a)(19) of the Act (15 U.S.C. 78c);
(d)	Investment company registered under section 8 of the Investment Company Act of 1940 (15 U.S.C. 80a-8);
(e)	An investment adviser in accordance with § 240.13d-1(b)(1)(ii)(E);
(f)	An employee benefit plan or endowment fund in accordance with § 240.13d-1(b)(1)(ii)(F);
(g)	A parent holding company or control person in accordance with § 240.13d-1(b)(1)(ii)(G);
(h)	A savings associations as defined in Section 3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813);
(i)	A church plan that is excluded from the definition of an investment company under section 3(c)(14) of the Investment Company Act of 1940 (15 U.S.C. 80a-3);
(j)	A non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J). If filing as a non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J), please specify the type of institution:
(k)	Group, in accordance with Rule 240.13d-1(b)(1)(ii)(K).
Item 4.	Ownership
(a)	Amount beneficially owned: 553479
(b)	Percent of class: 5.87 %
(c)	Number of shares as to which the person has:
	(i) Sole power to vote or to direct the vote: 553479
	(ii) Shared power to vote or to direct the vote: 0
	(iii) Sole power to dispose or to direct the disposition of: 524026
	(iv) Shared power to dispose or to direct the disposition of: 827
Item 5.	Ownership of 5 Percent or Less of a Class.
Item 6.	Ownership of more than 5 Percent on Behalf of Another Person.
	Not Applicable
Item 7.	Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on by the Parent Holding Company or Control Person.
	Not Applicable
Item 8.	Identification and Classification of Members of the Group.
	Not Applicable
Item 9.	Notice of Dissolution of Group.
	Not Applicable

Item 10.

Certifications:

By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were acquired and are held in the ordinary course of business and were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect, other than activities solely in connection with a nomination under ?? 240.14a-11.

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.

The London Company

Signature:	/s/ Andrew J. Wetzel
Name/Title:	Andrew J. Wetzel, Chief Compliance Officer
Date:	08/14/2025

FAQ

How many NewMarket (NEU) shares does The London Company report owning?

The London Company reports beneficial ownership of 553,479 shares of NewMarket (NEU).

What percentage of NEU does that holding represent?

The reported position represents 5.87% of NewMarket's common stock.

Does The London Company have voting power over these NEU shares?

Yes; the filing reports sole voting power over all 553,479 shares.

How is dispositive power allocated for the reported NEU shares?

The filing reports sole dispositive power for 524,026 shares and shared dispositive power for 827 shares.

Is the position held to influence control of NewMarket (NEU)?

The London Company certifies that the securities are held in the ordinary course of business and were not acquired to change or influence control of the issuer.