Employee Benefit Plan, Schedule, Asset Held for Investment (Tables)

12 Months Ended

Dec. 31, 2025

EBP 002

EBP, Schedule of Asset Held for Investment [Line Items]

Schedule H, Line 4i – Schedule of Assets (Held At End of Year)

Savings Plan for the Employees of NewMarket Corporation and Affiliates

Schedule H, Line 4i - Schedule of Assets (Held at End of Year)

December 31, 2025

EIN: 20-0812170 PN: 002


(a)						(b) Identity of issuer, borrower, lessor, or similar party						(c) Description						(d)Shares						(e) Cost **						(f) Current value
*						NewMarket Corporation Common Stock Fund:
						Matching contributions						Common stock; no par value						161,712						$	37,005,998					$	111,138,413
						Employee deferrals						Common stock; no par value						128,224												88,123,246
						Tredegar Corporation Common Stock Fund						Common stock; no par value						26,188												188,031
						Albemarle Corporation Common Stock Fund						Common stock; par value $0.01						51,372												7,266,120
						Vanguard Federal Money Market Inv						Money Market						36,958,229												36,958,229
						MFS International Diversification Fund						Mutual fund						267,000												7,417,269
						PIMCO Total Return Fund						Mutual fund						1,136,418												10,068,666
						Vanguard US Growth Fund						Mutual fund						96,426												18,808,784
						Vanguard Total Bond Market Fund						Mutual fund						1,291,594												12,618,875
						Vanguard Mid Cap Index Fund						Mutual fund						77,133												6,122,823
						Vanguard Small Cap Index Fund						Mutual fund						54,720												6,762,326
						Vanguard Mid Cap Value Fund						Mutual fund						50,264												4,616,735
						Vanguard Small Cap Growth ADM						Mutual fund						27,604												2,929,381
						American Century Small Cap Fund						Mutual fund						540,886												4,857,158
						iShares MSCI EAFE Intl Idx Fund						Mutual fund						683,589												13,247,956
						iShares S&P 500 Index Fund						Mutual fund						131,852												104,982,842
						Invesco Growth & Income Fund						Mutual fund						396,538												9,041,066
						Franklin Small-Mid Cap Growth Fund						Mutual fund						253,581												11,814,340
						BlackRock Sustainable Balanced Fund						Mutual fund						185,863												5,098,233
						BlackRock LifePath Indx 2030						Mutual fund						1,206,069												22,758,530
						BlackRock LifePath Indx 2035						Mutual fund						1,157,508												24,643,350
						BlackRock LifePath Indx 2040						Mutual fund						916,749												21,351,083
						BlackRock LifePath Indx 2045						Mutual fund						709,083												18,244,708
						BlackRock LifePath Indx 2050						Mutual fund						607,821												16,587,432
						BlackRock LifePath Indx 2055						Mutual fund						324,492												9,267,486
						BlackRock LifePath Indx 2060						Mutual fund						169,968												4,366,468
						BlackRock LifePath Indx 2065						Mutual fund						46,878												850,841
						BlackRock LifePath Indx RET						Mutual fund						932,757												13,898,080
																														594,028,471
*						Participant loans						Notes receivable from participants bearing interest at 4.25% to 9.50% annually, maturity dates of 1/06/2026-12/30/2030												0						3,686,101
																														$	597,714,572


*			Denotes a party-in-interest to the Plan
**			Cost information is not required for employee deferrals invested in the NewMarket Corporation Common Stock Fund or other investments directed by the participants.

See report of independent registered public accounting firm.