John G. Boss

Companies

• Calumet LubricantsBoard member Aug 8, 2024 to now¹
• Cooper-Standard AutomotiveBoard member May 26, 2020 to now²
• Wabash NationalBoard member Dec 19, 2017 to now³
• Calumet Specialty Products Partners, L.P.Board member Aug 8, 2022 to May 9, 2024⁴

Holdings

Stock this person has reported owning, from the forms officers and directors file with the SEC. See the biggest insider stakes.

Shares held

• CLCalumet Lubricants CLMT33,033 shares⁵$1.9M at $57.75Jul 9, 2026
• CSCooper-Standard Automotive CPS86,865 shares⁶$1.8M at $20.83May 14, 2026
• WNWabash National WNC139,330 shares⁷$1.8M at $12.82May 13, 2026
• CSCalumet Specialty Products Partners, L.P.25,000 shares⁸Nov 17, 2023

As of each latest filing. The line shows shares held over time.

Recent filings

• Jul 9, 2026Shares withheld for tax 2,827 shares of Calumet Lubricants⁵
• Jul 9, 2026Exercised options 7,067 shares of Calumet Lubricants⁵
• May 14, 2026Exercised options 7,527 shares of Cooper-Standard Automotive⁶
• May 13, 2026Granted 21,866 shares of Wabash National⁷
• Dec 4, 2025Sold 1,011 shares of Calumet Lubricants⁹
• Dec 4, 2025Exercised options 2,526 shares of Calumet Lubricants⁹
• Jun 24, 2025Sold 1,518 shares of Calumet Lubricants¹⁰
• Jun 24, 2025Exercised options 3,796 shares of Calumet Lubricants¹⁰
• May 15, 2025Exercised options 7,693 shares of Cooper-Standard Automotive¹¹
• May 14, 2025Granted 15,448 shares of Wabash National¹²
• May 22, 2024Granted 6,307 shares of Wabash National¹³
• May 16, 2024Exercised options 10,092 shares of Cooper-Standard Automotive¹⁴
• Jan 25, 2024Bought 151 shares at $25.72 of Wabash National¹⁵
• Nov 17, 2023Bought 5,000 shares at $14.85 of Calumet Specialty Products Partners, L.P.⁸
• Nov 17, 2023Bought 5,000 shares at $14.76 of Calumet Specialty Products Partners, L.P.⁸
• Nov 17, 2023Bought 5,000 shares at $14.62 of Calumet Specialty Products Partners, L.P.⁸
• Nov 17, 2023Bought 5,000 shares at $14.47 of Calumet Specialty Products Partners, L.P.⁸
• Nov 17, 2023Bought 5,000 shares at $14.54 of Calumet Specialty Products Partners, L.P.⁸
• Oct 26, 2023Bought 188 shares at $20.52 of Wabash National¹⁵
• Jul 27, 2023Bought 164 shares at $23.55 of Wabash National¹⁵
• May 18, 2023Exercised options 19,802 shares of Cooper-Standard Automotive¹⁶
• May 10, 2023Granted 5,375 shares of Wabash National¹⁷
• Apr 27, 2023Bought 156 shares at $24.59 of Wabash National¹⁵
• Jan 26, 2023Bought 149 shares at $25.62 of Wabash National¹⁵
• Oct 27, 2022Bought 194 shares at $19.65 of Wabash National¹⁵