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Kirby William C. insider trades
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Kirby William C. insider trades

Kirby William C. has filed 6 Form 4s with the SEC that we hold, for Cabot Corp (CBT) (Director) and Taiwan Fund INC (TWN) (Director). Across all of them we count 1 purchase worth $3.3M and 0 sales worth $0 reported on Form 4. In the last 12 months: 1 purchase ($3.3M) and 0 sales ($0). The largest single trade was a purchase of 50,687 shares of Taiwan Fund INC worth $3.3M, dated 2026-02-26. The first filing on our record is dated 2022-01-14 and the latest 2026-02-27.

Cabot Corp (CBT)

Director · 5 filings · 0 purchases and sales

No purchase or sale of common stock reported here; these filings cover grants, option exercises or other codes.

Taiwan Fund INC (TWN)

Director · 1 filing · 1 purchase or sale
Trade dateCodeSharesValue as filedFiled
2026-02-26P, purchase reported on Form 450,687$3.3M2026-02-27
Source

Counted from the Form 4 filings this reporting owner (SEC CIK 1413483) filed on EDGAR. Values are the transaction values as filed. See every filing on EDGAR, or browse insider buying and today's insider purchases.

Source: U.S. Securities and Exchange Commission (EDGAR) and other official government data · Updated 2026-10-12 · For informational purposes only, not investment advice.
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