SEC Insider Transactions from Xia Yu.

Last updated: 2026-03-14 11:43 UTC | Total transactions: 8

Xia Yu, a director at Summit Therapeutics Inc. ($SMMT), made one open market purchase of shares in the last 365 days, totaling almost $10 million. The most recent buy occurred on October 21, 2025. This ranks Xia Yu 111th among nearly 5,000 individual insiders for highest purchase amounts, well above the average of $1.5 million across 3.29 transactions. Xia Yu reported no open market sales during this period.

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Transaction Date Company Ticker Insider Name Title Transaction Type Security Shares Price Shares Owned Following Total Shares Outstanding % of Owned % of Outstanding
Jan. 2, 2026 Summit Therapeutics Inc. $SMMT Xia Yu Director A Stock Option (right to buy) 35000 $0.00 35,000.0000 744,442,538 9999.99% 0.00%
Oct. 21, 2025 Summit Therapeutics Inc. $SMMT Xia Yu Director P Common Stock 533617 $18.74 32,057,147.0000 744,442,538 1.69% 0.07%
Jan. 2, 2025 Summit Therapeutics Inc. $SMMT Xia Yu Director A Stock Option (right to buy) 35000 $0.00 35,000.0000 0 9999.99% 0.00%
Jan. 2, 2025 Summit Therapeutics Inc. $SMMT Xia Yu Director A Stock Option (right to buy) 5438 $9.18 5,438.0000 0 9999.99% 0.00%
Jan. 17, 2023 Summit Therapeutics Inc. $SMMT Xia Yu Director P Common Stock 10000000 $2.51 10,000,000.0000 0 9999.99% 0.00%
March 7, 2023 Summit Therapeutics Inc. $SMMT Xia Yu Director P Common Stock 21523530 $1.05 21,523,530.0000 0 9999.99% 0.00%
Jan. 2, 2024 Summit Therapeutics Inc. $SMMT Xia Yu Director A Stock Option (right to buy) 35000 $0.00 35,000.0000 0 9999.99% 0.00%
Jan. 2, 2024 Summit Therapeutics Inc. $SMMT Xia Yu Director A Stock Option (right to buy) 200000 $0.00 235,000.0000 0 571.43% 0.00%