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SMMT - Summit Therapeutics Inc.

Insider Purchase by Duggan Robert W (Co-CEO, 10%)

6 Months
After Trade
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Trade Summary

4 months ago, Duggan Robert W, serving as Co-CEO, 10% owner at Summit Therapeutics Inc. (SMMT), purchased 26,680 shares at $18.74 per share, for a total transaction value of $499,983.00. Following this transaction, Duggan Robert W now holds 606,105,809 shares of SMMT.

The trade was executed on Tuesday, October 21, 2025 and publicly disclosed via SEC Form 4 filing on Thursday, October 23, 2025, 2 days after the trade was made.

Summit Therapeutics Inc. operates in the HEALTHCARE sector, specifically within the BIOTECHNOLOGY industry. Insider buying activity in this sector can provide valuable signals about industry trends and company-specific developments.

Duggan Robert W

Co-CEO, 10%

Robert W. Duggan (born 1944) is an American billionaire entrepreneur and biotech executive, currently serving as Co-CEO, Executive Chairman, and leading shareholder of Summit Therapeutics Inc. (SMMT), a biopharmaceutical company focused on oncology therapies like ivonescimab for non-small-cell lung cancer.[[1]](https://en.wikipedia.org/wiki/Robert_Duggan_(venture_capitalist))[[2]](https://www.lmc-clients.com/duggan/beta/leader/)[[3]](https://smmttx.com/company/board-of-directors/default.aspx) He recently engaged in insider trading activity at SMMT representing 10% ownership.[user query] Duggan's career highlights include founding Sunset Designs, sold for $15 million, leading GTSI to $600 million revenue, chairing Computer Motion (now part of Intuitive Surgical) through pioneering robotic surgery like the 2001 Lindbergh Operation, and as CEO of Pharmacyclics from 2008-2015, turning it from near-bankruptcy to a $21 billion sale to AbbVie via the cancer drug Imbruvica, netting him $3.5 billion.[[1]](https://en.wikipedia.org/wiki/Robert_Duggan_(venture_capitalist))[[2]](https://www.lmc-clients.com/duggan/beta/leader/) He also chairs Pulse Biosciences, focusing on bioelectric technologies, and founded Genius Inc. for leadership coaching; no formal education details are available in sources.[[1]](https://en.wikipedia.org/wiki/Robert_Duggan_(venture_capitalist))

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Trade Price

$18.74

Quantity

26,680

Total Value

$499,983.00

Shares Owned

606,105,809

Trade Date

Tuesday, October 21, 2025

124 days ago

SEC Filing Date

Thursday, October 23, 2025

Filed 2 days after trade

HEALTHCAREBIOTECHNOLOGY

About Summit Therapeutics Inc.

Company Overview

No company information available
View news mentioning SMMT

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