NewMarket (NEU) director awarded 157-share annual grant under 2023 stock plan

Rhea-AI Filing Summary

GAMBILL MARK M reported acquisition or exercise transactions in this Form 4 filing.

NewMarket Corporation director Mark M. Gambill received 157 shares of common stock as an annual stock grant for non-employee directors. The shares were issued at no cost under the NewMarket Corporation 2023 Incentive Compensation and Stock Plan, bringing his directly held stake to 4,149 shares.

Insider Trade Summary

1 transaction reported

Mixed 1 txn

Insider GAMBILL MARK M

Role null

Type	Security	Shares	Price	Value
Grant/Award	Common Stock	157	$0.00	--

Holdings After Transaction: Common Stock — 4,149 shares (Direct, null)

Footnotes (1)

1. [object Object]

Key Figures

Shares granted: 157 shares Post-transaction holdings: 4,149 shares Price per share for grant: $0.00 per share +1 more

4 metrics

Shares granted 157 shares Annual stock grant to non-employee director

Post-transaction holdings 4,149 shares Common stock directly held after grant

Price per share for grant $0.00 per share Grant, award, or other acquisition (non-cash)

Transaction code A Grant, award, or other acquisition of common stock

Key Terms

annual stock grant, non-employee directors, 2023 Incentive Compensation and Stock Plan, Grant, award, or other acquisition

4 terms

annual stock grant financial

"Represents annual stock grant to non-employee directors."

non-employee directors financial

"Represents annual stock grant to non-employee directors."

Non-employee directors are board members who do not work for the company as salaried employees and usually do not hold day-to-day management roles. They act like outside referees or independent coaches, providing oversight, asking tough questions, and protecting shareholders’ interests; investors care because these directors help ensure management is accountable, reduce conflicts of interest, and influence decisions that affect company strategy and long-term value.

2023 Incentive Compensation and Stock Plan financial

"Shares were issued under the NewMarket Corporation 2023 Incentive Compensation and Stock Plan."

Grant, award, or other acquisition regulatory

"transaction_code_description": "Grant, award, or other acquisition""

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Form 4 Insider Transactions: What Each Field Means →

Available on EDGAR 07/01/2026 - 04:31 PM Accepted by SEC EDGAR 07/01/2026 - 04:30 PM Learn about SEC filing dates

SEC Form 4

FORM 4

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

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

GAMBILL MARK M

(Last) (First) (Middle)

330 SOUTH FOURTH STREET

(Street)

RICHMOND VIRGINIA 23219

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
NEWMARKET CORP [ NEU ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director		10% Owner
	Officer (give title below)		Other (specify below)

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
07/01/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	07/01/2026		A(1)		157	A	$0	4,149	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. Represents annual stock grant to non-employee directors. Shares were issued under the NewMarket Corporation 2023 Incentive Compensation and Stock Plan.

	/s/ Anne-Marie Anderson (By Power of Attorney for Mark M. Gambill)	07/01/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)

FAQ

What insider transaction did NewMarket (NEU) director Mark M. Gambill report?

Mark M. Gambill reported receiving 157 shares of NewMarket common stock. This was a stock grant to a non-employee director, issued as part of the company’s equity compensation program rather than an open-market purchase or sale.

Was the NewMarket (NEU) Form 4 transaction a stock purchase or a grant?

The Form 4 shows a stock grant, not a market purchase. The 157 shares of common stock were awarded to the director as an annual grant to non-employee directors under NewMarket’s 2023 Incentive Compensation and Stock Plan.

How many NewMarket (NEU) shares does Mark M. Gambill hold after this grant?

After the reported grant, Mark M. Gambill directly holds 4,149 shares of NewMarket common stock. This total includes the 157 shares received in the latest annual stock grant to non-employee directors under the company’s 2023 equity compensation plan.

What does transaction code "A" mean in the NewMarket (NEU) Form 4 filing?

Transaction code “A” indicates a grant, award, or similar acquisition of stock. In this case, 157 shares of NewMarket common stock were granted to a non-employee director as part of the company’s 2023 Incentive Compensation and Stock Plan.

Were any NewMarket (NEU) shares sold in this Form 4 transaction?

No shares were sold in this Form 4. The filing reports only an acquisition of 157 shares through a stock grant to a non-employee director, with no corresponding sale, tax withholding disposition, or derivative exercise reported in this transaction.