Duggan Robert W

Co-chief Executive Officer | Director, 10% Owner | Chief Executive Officer +1 more

2 companies

Insider Signal Score

Excellent

Trades Analyzed

12M Win Rate

63.6%

Avg 3M Return

+7.5%

Avg 12M Return

+48.4%

Duggan Robert W is a Co-chief Executive Officer at Summit Therapeutics Inc. with holdings across 2 companies. Recent SEC Form 4 filings include 25 buys and 0 sells.

Estimated insider holdings value: $11214.2M based on current market prices.

Holdings by Company

SMMTOct 21, 2025

Current Shares570.07M

Value$10.31B

Net Activity+497.14M

Bought: 497.14MSold: 0

PLSESep 10, 2025

Current Shares47.55M

Value$907.28M

Net Activity+18.21M

Bought: 18.21MSold: 0

Transaction History

Showing 10 filings (page 3)

Date	Ticker	Role	Type	Shares	Price	Value	Chg%	3M	12M
Aug 16, 2022	SMMT Summit Therapeutics Inc.	Chief Executive Officer	Buy	94,849,203	$0.97	$92,003,726.91	+140.1%	+4.0%	+76.2%
Jun 30, 2021	PLSE Pulse Biosciences, Inc.	Director, 10% Owner	Buy	3,048,780	$16.40	$49,999,992.00	+26.1%	+35.4%	-90.7%
May 12, 2021	SMMT Summit Therapeutics Inc.	Chief Executive Officer	Buy	11,365,921	$5.24	$59,557,426.04	+20.2%	+48.1%	-78.4%
Nov 6, 2020	SMMT Summit Therapeutics Inc.	Chief Executive Officer	Buy	14,071,856	$3.34	$46,999,999.04	+33.3%	-	-
May 11, 2018	PLSE Pulse Biosciences, Inc.	Director, 10% Owner	Buy	21,353	$23.16	$494,535.48	+0.4%	-	-
Dec 13, 2017	PLSE Pulse Biosciences, Inc.	Director, 10% Owner	Buy	20,556	$22.44	$461,276.64	+0.4%	-	-
Oct 19, 2017	PLSE Pulse Biosciences, Inc.	10% Owner	Buy	22,901	$22.79	$521,867.99	+0.4%	-	-
Sep 24, 2017	PLSE Pulse Biosciences, Inc.	10% Owner	Buy	2,000,000	$15.02	$30,040,000.00	+52.7%	-	-
Sep 18, 2017	PLSE Pulse Biosciences, Inc.	10% Owner	Buy	409,918	$14.36	$5,885,102.81	+1.3%	-	-
Aug 3, 2017	PLSE Pulse Biosciences, Inc.	10% Owner	Buy	277,450	$23.14	$6,419,318.11	+1.1%	-	-

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Insider	Role	Shares	Value	Buys	Sells

Date	Ticker	Insider	Role	Type	Shares	Price	Value	Chg%	SEC