We have seen 54 open market insider transactions reported today, October 24, 2025. You can track them all on the Quiver Quantitative Insider Trading dashboard. Here are some of the largest open market insider stock purchases we have seen.
SUMMIT THERAPEUTICS INC. ($SMMT)
Xia Yu bought 533,617 shares on 10/21 for an estimated $9,999,982.
Past $SMMT Insider Trades
SUMMIT THERAPEUTICS INC. insiders have traded $SMMT stock on the open market 7 times in the past 6 months. Of those trades, 7 have been purchases and 0 have been sales.
Here’s a breakdown of recent trading of $SMMT stock by insiders over the last 6 months:
- YU XIA purchased 533,617 shares for an estimated $9,999,982
- ROBERT W DUGGAN (Co-Chief Executive Officer) has made 3 purchases buying 365,074 shares for an estimated $6,484,739 and 0 sales.
- MAHKAM ZANGANEH (Co-Chief Executive Officer) has made 3 purchases buying 365,074 shares for an estimated $6,484,739 and 0 sales.
TURN THERAPEUTICS INC. ($TTRX)
GOLDEN ARTHUR F bought 20,202 shares on 10/23 for an estimated $99,999.
Past $TTRX Insider Trades
TURN THERAPEUTICS INC. insiders have traded $TTRX stock on the open market 2 times in the past 6 months. Of those trades, 2 have been purchases and 0 have been sales.
Here’s a breakdown of recent trading of $TTRX stock by insiders over the last 6 months:
- ARTHUR F GOLDEN purchased 20,202 shares for an estimated $99,999
- ZURAIZ CHAUDHARY (See Remarks) purchased 5,050 shares for an estimated $24,997
To track insider transactions, check out Quiver Quantitative's insider trading dashboard.
