Newmarket Corporation
A Richmond, Virginia-based holding company that makes chemical additives for fuels and lubricants through its main subsidiary, Afton Chemical — products that help gasoline, diesel, and engine oils run cleaner, longer, and with lower emissions. It began life in 1887 as the Albemarle Paper Manufacturing Company, and in 1962 its leader bought the far larger Ethyl Corporation in a takeover that newspapers dubbed "Jonah Swallows the Whale." The company later took the Ethyl name, then renamed itself NewMarket in 2004 after a reorganization split its businesses apart.
Granted 1.0K · Bought 1.37M
Granted 36.6K · Sold 74.1K
Granted 24.4K · Bought 352 · Sold 22.4K
Granted 21.8K · Sold 6.1K
Granted 815
Granted 5.0K · Sold 6.6K
Granted 5.3K · Sold 4.0K
Granted 2.2K · Sold 1.1K
Granted 3.2K
Granted 21.2K · Sold 20.0K
Granted 3.7K · Bought 1.2K
Granted 622 · Bought 264
Granted 16.9K · Sold 2.1K
Granted 3.0K
Granted 3.2K · Bought 500 · Sold 454
Granted 4.0K · Sold 2.0K
Granted 40.3K · Sold 28.1K
Granted 398
Granted 1.0K · Sold 11.5K
Granted 2.3K
Granted 342
Granted 859 · Bought 400
Granted 665
Granted 96
Granted 17.0K · Sold 28.9K
Granted 337
Granted 30
| Insider | Stake change | Holds now | Granted / vested | Bought | Sold |
|---|---|---|---|---|---|
| Gottwald Bruce C10% owner · 1221 transactions | — | 926.5K | 1.0K | 1.37M | — |
| Gottwald Thomas EChairman, President & CEO, Director · 241 transactions | — | 610.3K | 36.6K | — | 74.1K |
| Hazelgrove Bruce R IIIEVP & CAO · 65 transactions | — | 23.3K | 24.4K | 352 | 22.4K |
| Walker Charles BDirector · 13 transactions | — | 15.7Kas of Jul 2014 | 21.8K | — | 6.1K |
| Scott Sidney BufordDirector · 3 transactions | — | 15.7Kas of Jul 2008 | 815 | — | — |
| Russell L Gottwald JrPresident - Ethyl Corporation · 12 transactions | — | 14.7Kas of Feb 2008 | 5.0K | — | 6.6K |
| West M RudolphSecretary · 24 transactions | — | 11.3Kas of Feb 2020 | 5.3K | — | 4.0K |
| Shama Robert A.President Afton Chemical Corp · 11 transactions | — | 11.3Kas of Nov 2017 | 2.2K | — | 1.1K |
| Cothran PhyllisDirector · 16 transactions | — | 6.0Kas of Jul 2021 | 3.2K | — | — |
| Edmonds Steven MVice President,General Counsel · 18 transactions | — | 5.4Kas of Sep 2015 | 21.2K | — | 20.0K |
| Hanley Patrick DDirector · 20 transactions | — | 5.2Kas of Jul 2023 | 3.7K | 1.2K | — |
| Warner Cameron D.Treasurer & Corp Dev Dir · 20 transactions | — | 4.7Kas of Feb 2023 | 622 | 264 | — |
| Huang C S WarrenPresident Afton Chemical Corp · 18 transactions | — | 4.4Kas of Sep 2012 | 16.9K | — | 2.1K |
| Paliotti Brian DPresident Afton Chemical Corp · 16 transactions | — | 4.0K | 3.0K | — | — |
| Gambill Mark MDirector · 20 transactions | — | 4.0Kas of Jul 2025 | 3.2K | 500 | 454 |
| Rogers James EDirector · 36 transactions | — | 3.7Kas of Jul 2025 | 4.0K | — | 2.0K |
| McLean AlexSenior VP Afton Chemical Corp · 13 transactions | — | 3.2Kas of Nov 2010 | 40.3K | — | 28.1K |
| Harm Regina APresident Afton Chemical Corp · 4 transactions | — | 2.4Kas of Feb 2020 | 398 | — | — |
| Drinkwater Wayne CController · 21 transactions | — | 2.2Kas of Feb 2013 | 1.0K | — | 11.5K |
| Harris H Hiter IIIDirector · 11 transactions | — | 2.1Kas of Jul 2025 | 2.3K | — | — |
| Skrobacz William JVice President & CFO · 14 transactions | — | 1.4Kas of Feb 2024 | 342 | — | — |
| Fitzgerald Timothy KVice President & CFO · 2 transactions | — | 980.24 | — | — | — |
| Xu TingDirector · 6 transactions | — | 929 | 859 | 400 | — |
| Jewett Bryce Dickinson IIIEVP and General Counsel · 4 transactions | — | 810.67 | 665 | — | — |
| Ridgeway GailController · 3 transactions | — | 594.53as of Mar 2024 | 96 | — | — |
| Fiorenza David AVP & Chief Financial Officer · 45 transactions | — | 401.87as of Feb 2015 | 17.0K | — | 28.9K |
| Ukrop Lowell SimmonsDirector · 2 transactions | — | 337as of Jul 2025 | 337 | — | — |
| Pietrantoni Ann PController · 1 transaction | — | 200.27as of Feb 2025 | 30 | — | — |
Select a row to see that insider’s individual transactions. Sum of the holdings confirmed in the 12 months before this insider's last filing. A Form 4 reports a holding per line — held directly, or through a named trust, partnership or foundation, and in each share class separately — never a person’s total. Lines not restated in that time are left out and shown apart: an active filer restates what they still hold, so a line they did not restate is more often an entity since renamed, whose shares a successor line reports too. An amber marker means some were left out.
Net open-market activity over all recorded history: +1.16M shares. Grants, option exercises and tax withholding are excluded — they are compensation mechanics, not decisions to buy or sell.