Shawn D. Williams

Companies

• Kirby CorporationBoard member Aug 3, 2021 to now¹
• TETRA TECHNOLOGIES INCBoard member Apr 2, 2021 to now²
• Marathon OilBoard member Feb 1, 2023 to Nov 22, 2024³

Holdings

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

Shares held

• Kirby Corporation KEX13,676 shares⁴$1.9M at $136.32May 4, 2026
• TTTETRA TECHNOLOGIES INC TTI99,444 shares⁵$526.6K at $5.29May 24, 2024
• Marathon Oil MRO0 shares⁶Nov 22, 2024

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

Recent filings

• May 4, 2026Granted 1,392 shares of Kirby Corporation⁴
• May 5, 2025Granted 1,923 shares of Kirby Corporation⁷
• Nov 22, 2024Returned to company 15,486 shares of Marathon Oil⁶
• May 24, 2024Exercised options 39,091 shares of TETRA TECHNOLOGIES INC⁵
• Apr 29, 2024Granted 1,828 shares of Kirby Corporation⁸
• Mar 1, 2024Granted 8,130 shares of Marathon Oil⁹
• May 24, 2023Exercised options 24,022 shares of TETRA TECHNOLOGIES INC¹⁰
• May 1, 2023Granted 2,767 shares of Kirby Corporation¹¹
• Mar 1, 2023Granted 7,109 shares of Marathon Oil¹²
• May 26, 2022Exercised options 31,216 shares of TETRA TECHNOLOGIES INC¹³
• May 2, 2022Granted 3,113 shares of Kirby Corporation¹⁴
• Aug 2, 2021Granted 2,653 shares of Kirby Corporation¹⁵