William C. Kirby

Companies

• Cabot CorporationBoard member Jul 12, 2012 to now¹

Holdings

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

Shares held

• Cabot Corporation CBT27,688 shares²$2.1M at $74.29Jan 8, 2026

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

Recent filings

• Jan 8, 2026Granted 486 shares of Cabot Corporation²
• Jan 10, 2025Granted 1,788 shares of Cabot Corporation³
• Jan 11, 2024Granted 2,035 shares of Cabot Corporation⁴
• Jan 12, 2023Granted 1,854 shares of Cabot Corporation⁵
• Jan 13, 2022Granted 2,254 shares of Cabot Corporation⁶
• Jan 7, 2021Granted 2,489 shares of Cabot Corporation⁷
• Jan 9, 2020Granted 2,635 shares of Cabot Corporation⁸
• Jan 10, 2019Granted 2,613 shares of Cabot Corporation⁹
• Jan 12, 2018Granted 1,636 shares of Cabot Corporation¹⁰
• Jan 13, 2017Granted 2,052 shares of Cabot Corporation¹¹
• Jan 8, 2016Granted 1,987 shares of Cabot Corporation¹²
• Jan 9, 2015Granted 1,738 shares of Cabot Corporation¹³
• Jan 10, 2014Granted 1,451 shares of Cabot Corporation¹⁴
• Jan 11, 2013Granted 1,748 shares of Cabot Corporation¹⁵
• Jul 10, 2012Granted 922 shares of Cabot Corporation¹⁶