Other Information
−Removed: During the quarter ended September 30, 2024, no director or officer (as defined in Rule 16a-1(f) under the Exchange Act) of NewMarket Corporation adopted or terminated a "Rule 10b5-1 trading arrangement" or "non-Rule 10b5-1 trading arrangement," as each term is defined in Item 408(a) or Regulation S-K.
+Added: During the quarter ended March 31, 2025, no director or officer (as defined in Rule 16a-1(f) under the Exchange Act) of NewMarket Corporation adopted or terminated a "Rule 10b5-1 trading arrangement" or "non-Rule 10b5-1 trading arrangement," as each term is defined in Item 408(a) or Regulation S-K.
Articles of Incorporation Amended and Restated effective April 27, 2012 (incorporated by reference to Exhibit 3.1 to Form 8-K (File No.
5 unchanged sentences
Exhibit 31(b)
−Removed: Certification pursuant to Rule 13a-14(a) under the Securities Exchange Act of 1934, as adopted pursuant to Section 302 of the Sarbanes-Oxley Act of 2002 by William J.
+Added: Certification pursuant to Rule 13a-14(a) under the Securities Exchange Act of 1934, as adopted pursuant to Section 302 of the Sarbanes-Oxley Act of 2002 by Timothy K.
Exhibit 32(a)
3 unchanged sentences
Certification pursuant to 18 U.S.C.
−Removed: Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 by William J.
+Added: Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 by Timothy K.
Exhibit 101 Inline XBRL Instance Document and Related Items (the instance document does not appear in the Interactive Data File because its Inline XBRL tags are embedded within the Inline XBRL document)
2 unchanged sentences
NEWMARKET CORPORATION
−Removed: October 24, 2024 By:
−Removed: /s/ William J.
+Added: April 24, 2025 By:
+Added: /s/ Timothy K.
Vice President and
1 unchanged sentence
(Principal Financial Officer)
−Removed: October 24, 2024 By:
+Added: April 24, 2025 By:
(Principal Accounting Officer)
Compared sentence by sentence after normalising whitespace, quotation marks, case and digits, so re-formatting and restated figures do not read as changed language. Wording changes appear as one removal and one addition. The current filing and the prior one are authoritative.