Cabot Corporation
Ownership
Ownership Structure
Who owns Cabot Corporation (CBT)? This page shows the largest institutions and funds, the ownership structure and the latest insider transactions. 98.5% of the shares are freely tradable; institutional investors hold 102.3%.
Largest Shareholders
Institutions
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| BlackRock Inc | 12.81 | 6,616,051 | -0.1 | 03/31/2026 |
| Earnest Partners LLC | 6.12 | 3,158,617 | +1.7 | 03/31/2026 |
| Vanguard Portfolio Management, LLC | 6.05 | 3,121,342 | +0.0 | 03/31/2026 |
| American Century Companies Inc | 5.36 | 2,768,176 | +23.7 | 06/30/2026 |
| Wellington Management Company LLP | 4.68 | 2,416,471 | -32.2 | 06/30/2026 |
| Vanguard Capital Management, LLC | 4.50 | 2,324,307 | +0.0 | 03/31/2026 |
| Fuller & Thaler Asset Management Inc | 3.97 | 2,048,260 | -56.3 | 03/31/2026 |
| State Street Corp | 3.93 | 2,027,336 | +0.1 | 03/31/2026 |
| Dimensional Fund Advisors, Inc. | 3.73 | 1,926,205 | +10.5 | 06/30/2026 |
Funds
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| Avantis US Small Cap Value ETF | 5.14 | 2,654,264 | +0.1 | 08/31/2026 |
Largest reported positions according to regulatory filings; stake as a percentage of shares outstanding, change versus the previous filing. Source: fundamentals data.
Insider holdings
| Person | Role | Shares | Value | As of | Type |
|---|---|---|---|---|---|
| Keohane Sean D | President and CEO | 404,134 | 31,360,798 $ | Aug 28, 2026 | direct |
Holdings as of each person's most recent SEC Form 4 filing — excluding options and RSUs, which are not shares yet. Holdings may have changed between two filings.
Insiders
Insider Transactions
| Date | Person | Role | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Aug 28, 2026 | Keohane Sean D | President and CEO | Sell | 134,895 | 85.00 | 11,466,075 |
| Aug 28, 2026 | Keohane Sean D | President and CEO | Other | 134,895 | 50.00 | 6,744,750 |
| Aug 24, 2026 | Keohane Sean D | President and CEO | Sell | 2,779 | 85.50 | 237,605 |
| Aug 24, 2026 | Keohane Sean D | President and CEO | Other | 2,779 | 50.00 | 138,950 |
| Aug 7, 2026 | Keohane Sean D | President and CEO | Sell | 91,923 | 86.41 | 7,942,634 |
| Aug 7, 2026 | Keohane Sean D | President and CEO | Other | 91,923 | 62.24 | 5,721,288 |
Reportable transactions by officers and major shareholders from SEC Form 4 filings. "Other" includes things like stock grants and option exercises without a buy/sell character. View all insider transactions →
Data as of: September 17, 2026 · Source: fundamental data & SEC filings (annual and quarterly reports, 10-K/10-Q)
Note: pure fact-based analysis, not investment advice and not a solicitation to buy or sell. All figures without guarantee.