Williams Lewis T

Director at BECKMAN COULTER INC · on record since Oct 30, 2009
Director at FIVE PRIME THERAPEUTICS, INC. · on record since Sep 17, 2013
Director at Protagonist Therapeutics, Inc · on record since Jun 15, 2017
Executive Chairman at FIVE PRIME THERAPEUTICS, INC. · on record since Feb 28, 2018
Director at CAPRICOR THERAPEUTICS, INC. · on record since Aug 12, 2019
Director at Arcellx, Inc. · on record since Feb 9, 2022

Insider trading activity of Williams Lewis T

Transactions on record: 147; since Nov 4, 2009

Open-market buys: 0

Open-market sells: 32; $16.5M

Companies traded: 5; last filing Feb 18, 2026

Figures computed from official regulatory filings — .

Companies where Williams Lewis T has traded

Protagonist Therapeutics, Inc15 tx · $1.7M · Feb 18, 2026
Arcellx, Inc.3 tx · Feb 9, 2022
CAPRICOR THERAPEUTICS, INC.3 tx · May 13, 2021
FIVE PRIME THERAPEUTICS, INC.96 tx · $22.3M · Sep 4, 2019
BECKMAN COULTER INC30 tx · $521.1K · Jul 5, 2011

Track record of Williams Lewis T

Insufficient history for a statistical track record (fewer than 5 open-market buys).

Transaction history of Williams Lewis T

Co-insiders of Williams Lewis T

Adage Capital Advisors, L.L.C.FIVE PRIME THERAPEUTICS, INC. +1

This page republishes public regulatory disclosures.

Company	Filed	Type	Qty	Price	Value · USD	Src
Protagonist Therapeutics, IncListing on record	Feb 18, 2026	ExerciseD (derivative)	18,000	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
Protagonist Therapeutics, IncListing on record	Feb 18, 2026	Sell	-18,000	82.42 USD	$1.5M	SEC
Protagonist Therapeutics, IncListing on record	Feb 18, 2026	Exercise	18,000	10.84 USD	$195.1K	SEC
Protagonist Therapeutics, IncListing on record	Jan 6, 2026	Award	2,695	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
Protagonist Therapeutics, IncListing on record	Jan 6, 2026	AwardD (derivative)	3,762	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
Protagonist Therapeutics, IncListing on record	Jan 6, 2025	AwardD (derivative)	6,584	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
Protagonist Therapeutics, IncListing on record	Jan 6, 2025	Award	5,130	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
Protagonist Therapeutics, IncListing on record	Jan 4, 2024	AwardD (derivative)	25,700	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
Protagonist Therapeutics, IncListing on record	Jan 18, 2023	AwardD (derivative)	30,000	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
Protagonist Therapeutics, IncListing on record	May 27, 2022	AwardD (derivative)	20,000	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
Arcellx, Inc.Listing unverified	Feb 9, 2022	OtherD (derivative)	-931,228	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
Arcellx, Inc.Listing unverified	Feb 9, 2022	Other	2,095,114	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
Arcellx, Inc.Listing unverified	Feb 9, 2022	OtherD (derivative)	-1,163,886	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
Protagonist Therapeutics, IncListing on record	May 28, 2021	AwardD (derivative)	18,000	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
CAPRICOR THERAPEUTICS, INC.Listing on record	May 13, 2021	AwardD (derivative)	25,000	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
Protagonist Therapeutics, IncListing on record	May 29, 2020	AwardD (derivative)	15,000	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
CAPRICOR THERAPEUTICS, INC.Listing on record	May 7, 2020	AwardD (derivative)	25,000	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
CAPRICOR THERAPEUTICS, INC.Listing on record	Oct 15, 2019	AwardD (derivative)	22,000	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
FIVE PRIME THERAPEUTICS, INC.Listing unverified	Sep 4, 2019	Other	-7,024	5.43 USD	$38.1K	SEC
FIVE PRIME THERAPEUTICS, INC.Listing unverified	Jun 12, 2019	AwardD (derivative)	15,000	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
Protagonist Therapeutics, IncListing on record	Jun 11, 2019	AwardD (derivative)	12,000	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
FIVE PRIME THERAPEUTICS, INC.Listing unverified	Feb 28, 2019	Award	1,000	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
FIVE PRIME THERAPEUTICS, INC.Listing unverified	Feb 28, 2019	AwardD (derivative)	6,400	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
FIVE PRIME THERAPEUTICS, INC.Listing unverified	Feb 27, 2019	Other	-926	11.95 USD	$11.1K	SEC
FIVE PRIME THERAPEUTICS, INC.Listing unverified	Feb 7, 2019	Other	-3,144	11.43 USD	$35.9K	SEC

Company	Filed	Type	Qty	Price	Value · USD	Src
Protagonist Therapeutics, IncListing on record	Feb 18, 2026	ExerciseD (derivative)	18,000	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
Protagonist Therapeutics, IncListing on record	Feb 18, 2026	Sell	-18,000	82.42 USD	$1.5M	SEC
Protagonist Therapeutics, IncListing on record	Feb 18, 2026	Exercise	18,000	10.84 USD	$195.1K	SEC
Protagonist Therapeutics, IncListing on record	Jan 6, 2026	Award	2,695	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
Protagonist Therapeutics, IncListing on record	Jan 6, 2026	AwardD (derivative)	3,762	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
Protagonist Therapeutics, IncListing on record	Jan 6, 2025	AwardD (derivative)	6,584	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
Protagonist Therapeutics, IncListing on record	Jan 6, 2025	Award	5,130	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
Protagonist Therapeutics, IncListing on record	Jan 4, 2024	AwardD (derivative)	25,700	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
Protagonist Therapeutics, IncListing on record	Jan 18, 2023	AwardD (derivative)	30,000	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
Protagonist Therapeutics, IncListing on record	May 27, 2022	AwardD (derivative)	20,000	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
Arcellx, Inc.Listing unverified	Feb 9, 2022	OtherD (derivative)	-931,228	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
Arcellx, Inc.Listing unverified	Feb 9, 2022	Other	2,095,114	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
Arcellx, Inc.Listing unverified	Feb 9, 2022	OtherD (derivative)	-1,163,886	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
Protagonist Therapeutics, IncListing on record	May 28, 2021	AwardD (derivative)	18,000	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
CAPRICOR THERAPEUTICS, INC.Listing on record	May 13, 2021	AwardD (derivative)	25,000	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
Protagonist Therapeutics, IncListing on record	May 29, 2020	AwardD (derivative)	15,000	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
CAPRICOR THERAPEUTICS, INC.Listing on record	May 7, 2020	AwardD (derivative)	25,000	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
CAPRICOR THERAPEUTICS, INC.Listing on record	Oct 15, 2019	AwardD (derivative)	22,000	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
FIVE PRIME THERAPEUTICS, INC.Listing unverified	Sep 4, 2019	Other	-7,024	5.43 USD	$38.1K	SEC
FIVE PRIME THERAPEUTICS, INC.Listing unverified	Jun 12, 2019	AwardD (derivative)	15,000	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
Protagonist Therapeutics, IncListing on record	Jun 11, 2019	AwardD (derivative)	12,000	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
FIVE PRIME THERAPEUTICS, INC.Listing unverified	Feb 28, 2019	Award	1,000	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
FIVE PRIME THERAPEUTICS, INC.Listing unverified	Feb 28, 2019	AwardD (derivative)	6,400	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
FIVE PRIME THERAPEUTICS, INC.Listing unverified	Feb 27, 2019	Other	-926	11.95 USD	$11.1K	SEC
FIVE PRIME THERAPEUTICS, INC.Listing unverified	Feb 7, 2019	Other	-3,144	11.43 USD	$35.9K	SEC