Kirby William C. has filed 5 insider transactions across 2 companies since January 2023.
Most recent transaction: a purchase of 50686 shares of TAIWAN FUND INC ($TWN) on February 26, 2026.
Activity breakdown: 1 open-market purchase and 0 sales.
| Transaction Date | Company | Ticker | Insider Name | Title | Transaction Type | Security | Shares | Price | Shares Owned Following | Total Shares Outstanding | % of Owned | % of Outstanding |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Feb. 26, 2026 | TAIWAN FUND INC | $TWN | Kirby William C. | Not found | P | Taiwan Fund, Inc. | 50687 | $64.90 | 2,886.0000 | 0 | 0.00% | 0.00% |
| Jan. 8, 2026 | CABOT CORP | $CBT | Kirby William C. | Not found | A | Common Stock | 486 | $0.00 | 27,688.0000 | 52,900,000 | 1.79% | 0.00% |
| Jan. 10, 2025 | CABOT CORP | $CBT | Kirby William C. | Not found | A | Common Stock | 1788 | $0.00 | 27,202.0000 | 55,000,000 | 7.04% | 0.00% |
| Jan. 11, 2024 | CABOT CORP | $CBT | Kirby William C. | Not found | A | Common Stock | 2035 | $0.00 | 25,414.0000 | 56,500,000 | 8.70% | 0.00% |
| Jan. 12, 2023 | CABOT CORP | $CBT | Kirby William C. | Director | A | Common Stock | 1854 | $0.00 | 23,379.0000 | 0 | 8.61% | 0.00% |