NewMarket (NEU) director Ting Xu buys 400 shares in open-market trade

Rhea-AI Filing Summary

NewMarket Corp director Ting Xu bought additional company stock in the open market. On this transaction date, Xu purchased 400 shares of NewMarket common stock at a price of $619.21 per share. After this open-market purchase, Xu directly owned a total of 929 common shares of NewMarket.

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

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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^*

Xu Ting

(Last) (First) (Middle)

330 SOUTH FOURTH STREET

(Street)

RICHMOND VA 23219

(City) (State) (Zip)

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)

3. Date of Earliest Transaction (Month/Day/Year)
02/24/2026

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

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

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

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	02/24/2026		P		400	A	$619.21	929	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:

	/s/ Anne-Marie Anderson (by Power of Attorney for Ting Xu)	02/25/2026
	** 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.

FAQ

What insider transaction did NewMarket (NEU) director Ting Xu report?

NewMarket director Ting Xu reported an open-market purchase of company stock. Xu bought 400 shares of NewMarket common stock, increasing direct ownership to 929 shares immediately after the transaction, according to the Form 4 insider trading report filed with regulators.

How many NewMarket (NEU) shares did Ting Xu buy and at what price?

Ting Xu bought 400 shares of NewMarket common stock in an open-market transaction. The reported purchase price was $619.21 per share, as disclosed in the Form 4 filing, reflecting a sizeable dollar-value trade for a company board member.

What is Ting Xu’s total NewMarket (NEU) share ownership after this trade?

After the reported transaction, Ting Xu directly owned 929 shares of NewMarket common stock. This post-transaction holding figure comes from the Form 4, which lists total shares beneficially owned following the 400-share open-market purchase at $619.21 per share.

Was the NewMarket (NEU) insider transaction a buy or a sell?

The reported NewMarket insider transaction was a buy. Form 4 data show Ting Xu executed an open-market purchase, acquiring 400 shares of NewMarket common stock at $619.21 per share, increasing total directly held shares to 929 following completion of the trade.

What does the Form 4 code P mean in NewMarket (NEU) director Ting Xu’s filing?

In Ting Xu’s Form 4, transaction code “P” indicates a purchase. The filing specifies this as an open-market or private transaction, with Xu acquiring 400 NewMarket common shares at $619.21 each and ending the transaction with 929 shares directly owned.