William F. Masterson III

Insider Reports History

Location
Boston, MA
Signature
By: Jennifer Lombardi, pursuant to a power of attorney from William F. Masterson, III
All insider transactions
Transactions in reports broken out by “transaction date” reported in original SEC filing, see here for transactions aggregated across transaction date

Holdings reported by William F. Masterson III:

Stock Role Class Num Shares Value Price $ Report Date Ownership
CABOT CORP Senior Vice President Common Stock 7.21K $436K $60.47 03 Dec 2025 Direct
CABOT CORP Senior Vice President Phantom Stock Units 292 $19.9K $68.34 12 Dec 2025 Direct
CABOT CORP Senior Vice President Employee Stock Option (Right to Buy) 12.8K 03 Dec 2025 Direct

Insider Reports Filed by William F. Masterson III

Symbol Company Period Transactions Value $ Form Type Date Filed Role
CBT CABOT CORP 12 Dec 2025 1 $130 4 16 Dec 2025 Senior Vice President
CBT CABOT CORP 03 Dec 2025 2 $0 4 05 Dec 2025 Senior Vice President
CBT CABOT CORP 21 Nov 2025 0 $0 3 02 Dec 2025 Senior Vice President