Kirby William

Director at China Fund, Inc. · on record since Sep 26, 2007
Director at CABOT CORP · on record since Jul 12, 2012
Director at TAIWAN FUND INC · on record since Apr 30, 2013

Insider trading activity of Kirby William

Transactions on record: 20; since Mar 10, 2008

Open-market buys: 5; $3.3M

Open-market sells: 0

Companies traded: 3; last filing Feb 27, 2026

Figures computed from official regulatory filings — .

Companies where Kirby William has traded

TAIWAN FUND INC3 tx · $3.3M · Feb 27, 2026
CABOT CORP15 tx · Jan 12, 2026
China Fund, Inc.2 tx · $40.1K · Mar 9, 2010

Track record of Kirby William

Open-market buys: 5

Last buy: Feb 26, 2026

Enough buys on record, but none of them has a 63-day return yet — this happens when the shares stopped trading, or when the buys are too recent. Win rates will appear once returns mature.

Transaction history of Kirby William

Co-insiders of Kirby William

Allianz Global Investors Capital LLCChina Fund, Inc. +1
ALLIANZ GLOBAL INVESTORS OF AMERICA L PChina Fund, Inc. +1
Bengtson-Olivieri ErinChina Fund, Inc. +1
Bonanno PeterChina Fund, Inc. +1

This page republishes public regulatory disclosures.

Company	Filed	Type	Qty	Price	Value · USD	Signals	Src
TAIWAN FUND INCListing unverified	Feb 27, 2026	Buy	50,686.9	64.90 USD	$3.3M	conv 80Unusual sizeFirst in 12mo	SEC
CABOT CORPListing on record	Jan 12, 2026	Award	486	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
CABOT CORPListing on record	Jan 14, 2025	Award	1,788	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
CABOT CORPListing on record	Jan 12, 2024	Award	2,035	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
CABOT CORPListing on record	Jan 13, 2023	Award	1,854	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
CABOT CORPListing on record	Jan 14, 2022	Award	2,254	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
CABOT CORPListing on record	Jan 11, 2021	Award	2,489	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
TAIWAN FUND INCListing unverified	Dec 2, 2020	Buy	360	27.50 USD	$9.9K	conv 36Cluster	SEC
TAIWAN FUND INCListing unverified	Nov 12, 2020	Buy	415	24.45 USD	$10.1K	conv 56First in 12mo	SEC
CABOT CORPListing on record	Jan 13, 2020	Award	2,635	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
CABOT CORPListing on record	Jan 14, 2019	Award	2,613	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
CABOT CORPListing on record	Jan 17, 2018	Award	1,636	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
CABOT CORPListing on record	Jan 17, 2017	Award	2,052	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
CABOT CORPListing on record	Jan 12, 2016	Award	1,987	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
CABOT CORPListing on record	Jan 13, 2015	Award	1,738	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
CABOT CORPListing on record	Jan 14, 2014	Award	1,451	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
CABOT CORPListing on record	Jan 15, 2013	Award	1,748	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
CABOT CORPListing on record	Jul 12, 2012	Award	922	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
China Fund, Inc.Listing unverified	Mar 9, 2010	Buy	720	27.86	$20.1K	conv 79First in 12mo	SEC
China Fund, Inc.Listing unverified	Mar 10, 2008	Buy	600	33.35	$20K	conv 50First in 12mo	SEC

Company	Filed	Type	Qty	Price	Value · USD	Signals	Src
TAIWAN FUND INCListing unverified	Feb 27, 2026	Buy	50,686.9	64.90 USD	$3.3M	conv 80Unusual sizeFirst in 12mo	SEC
CABOT CORPListing on record	Jan 12, 2026	Award	486	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
CABOT CORPListing on record	Jan 14, 2025	Award	1,788	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
CABOT CORPListing on record	Jan 12, 2024	Award	2,035	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
CABOT CORPListing on record	Jan 13, 2023	Award	1,854	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
CABOT CORPListing on record	Jan 14, 2022	Award	2,254	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
CABOT CORPListing on record	Jan 11, 2021	Award	2,489	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
TAIWAN FUND INCListing unverified	Dec 2, 2020	Buy	360	27.50 USD	$9.9K	conv 36Cluster	SEC
TAIWAN FUND INCListing unverified	Nov 12, 2020	Buy	415	24.45 USD	$10.1K	conv 56First in 12mo	SEC
CABOT CORPListing on record	Jan 13, 2020	Award	2,635	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
CABOT CORPListing on record	Jan 14, 2019	Award	2,613	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
CABOT CORPListing on record	Jan 17, 2018	Award	1,636	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
CABOT CORPListing on record	Jan 17, 2017	Award	2,052	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
CABOT CORPListing on record	Jan 12, 2016	Award	1,987	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
CABOT CORPListing on record	Jan 13, 2015	Award	1,738	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
CABOT CORPListing on record	Jan 14, 2014	Award	1,451	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
CABOT CORPListing on record	Jan 15, 2013	Award	1,748	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
CABOT CORPListing on record	Jul 12, 2012	Award	922	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
China Fund, Inc.Listing unverified	Mar 9, 2010	Buy	720	27.86	$20.1K	conv 79First in 12mo	SEC
China Fund, Inc.Listing unverified	Mar 10, 2008	Buy	600	33.35	$20K	conv 50First in 12mo	SEC