X0609 4 2026-06-18 false 0001282637 NEWMARKET CORP NEU 0001246518 GOTTWALD THOMAS E false 330 SOUTH FOURTH STREET RICHMOND VA 23219 true true false false Chairman, President & CEO false Common Stock 2026-06-18 4 G false 211 0.00 D 116424 D Common Stock 5147 I Shares held by wife Common Stock 1830 I Shares held as trustee for grandchild (trust 3) Common Stock 1436 I Shares held as trustee for grandchild (trust 5) Common Stock 1186 I Shares held as trustee for grandchild (trust 6) Common Stock 1164 I Shares held as trustee for grandchild (trust 7) Common Stock 807 I Shares held as trustee for grandchild (trust 8) Common Stock 618 I Shares held as trustee for grandchild (trust 9) Common Stock 363 I Shares held as trustee for grandchild (trust 11) Common Stock 378 I Shares held as trustee for grandchild (trust 12) Common Stock 363 I Shares held as trustee for grandchild (trust 13) Common Stock 40198.84 I NewMarket Savings Plan Common Stock 46407 I Shares held as co-trustee fbo (among others reporting Floyd D. Gottwald) Common Stock 6889 I Shares held as co-trustee fbo children dtd. 12/16/1991 Common Stock 143837 I 2025 GRAT /s/ Anne-Marie Anderson, (by Power of Attorney for Thomas E. Gottwald) 2026-06-29