NEWMARKET CORP — Director's Dealing 2011

Apr 27, 2011

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: NEWMARKET CORP (NEU)
CIK: 0001282637
Period of Report: 2011-04-26

Reporting Person: GOTTWALD THOMAS E (Director, President & CEO)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2011-04-26	Common Stock	M	15000	$4.35	Acquired	385196	Direct
2011-04-26	Common Stock	S	9300	$181.52	Disposed	375896	Direct
2011-04-26	Common Stock	S	5700	$182.60	Disposed	370196	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2011-04-26	Common Stock	$4.35	M	15000	Disposed	2011-09-28	Common Stock (15000)	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	26957.96	Indirect
Common Stock	5422	Indirect
Common Stock	5515	Indirect
Common Stock	4657	Indirect
Common Stock	9229	Indirect
Common Stock	5317	Indirect
Common Stock	4527	Indirect
Common Stock	600	Indirect
Common Stock	750	Indirect
Common Stock	600	Indirect
Common Stock	500	Indirect
Common Stock	500	Indirect
Common Stock	7589	Indirect
Common Stock	6674	Indirect
Common Stock	6494	Indirect
Common Stock	6022	Indirect
Common Stock	6889	Indirect
Common Stock	18359	Indirect
Common Stock	212407	Indirect

Footnotes

F1: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $181.32 to $181.73, inclusive. The reporting person undertakes to provide to NewMarket Corporation, any security holder of NewMarket Corporation, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

F2: The increase in shares is due to periodic purchases by the Plan Trustee pursuant to the Plan.

F3: Shares held of record by Nordley Partners, L.P.