Robert W Duggan Summit Therapeutics Inc. (SMMT) insider trading activity

Robert W Duggan is Co-Chief Executive Officer of Summit Therapeutics Inc.. Currently has a direct ownership of 556 Million shares of SMMT, which is worth approximately $10.2 Billion. The most recent transaction as insider was on Sep 11, 2025, when has been sold 5,000 shares (Common Stock) at a price of $18.07 per share, resulting in proceeds of $90,350. This information was disclosed in a Form 4 filing with the Securities and Exchange Commission (SEC).

Shares Held (Direct Ownership) 556M

0.06% 3M change

0.8% 12M change

Total Value Held $10.2 Billion

ROBERT W DUGGAN Transaction History

Date	Transaction	Value	Shares Traded	Shares Held
Sep 11 2025	BUY Open market or private purchase	$90,350 $18.07 p/Share	5,000 Added 0.0%	556,093,090 Common Stock
Sep 10 2025	BUY Open market or private purchase	$5,894,405 $17.68 p/Share	333,394 Added 0.06%	556,088,090 Common Stock
May 30 2025	BUY Exercise of conversion of derivative security	$196,798 $2.64 p/Share	74,545 Added 0.01%	555,754,696 Common Stock
Apr 08 2025	BUY Exercise of in-the-money or at-the-money derivatives securities	$6,296,386 $1.58 p/Share	3,985,055 Added 0.71%	555,680,151 Common Stock
Sep 11 2024	BUY Grant, award, or other acquisition	$75,499,995 $22.7 p/Share	3,325,991 Added 0.6%	551,695,096 Common Stock
Mar 06 2023	BUY Open market or private purchase	$395,314,374 $1.05 p/Share	376,489,880 Added 40.53%	552,354,161 Common Stock
Dec 06 2022	BUY Other acquisition or disposition	-	9,346,434 Added 5.16%	171,879,226 Common Stock
Aug 16 2022	BUY Open market or private purchase	$92,003,730 $0.97 p/Share	94,849,203 Added 36.85%	162,532,792 Common Stock
May 23 2022	BUY Other acquisition or disposition	-	21,135 Added 0.03%	67,683,589 Common Stock
May 12 2021	BUY Open market or private purchase	$59,557,423 $5.24 p/Share	11,365,921 Added 14.38%	67,662,454 Common Stock
Nov 06 2020	BUY Open market or private purchase	$46,999,998 $3.34 p/Share	14,071,856 Added 20.0%	56,296,533 Common Stock

Also insider at

PLSE

Pulse Biosciences, Inc. Healthcare

Director

RWD

Robert W Duggan

Co-Chief Executive Officer

Clearwater, FL

Institutional Portfolio Updates

Receive a notification when an Institution or Guru buys or sells SMMT shares.

Notify only if

Value

Insider Trading

Get notified when an Summit Therapeutics Inc. insider buys or sells SMMT shares.

Notify only if

Operation

Value

Type

News

Receive news related to Summit Therapeutics Inc.

Track Activities on SMMT

Account