Fri, Jun 27, 2025
Jun 27
60,000 shares @ $15.84
Increased holdings by +0.90%
23rd largest trade (out of 58)
Cluster Buy
Trade made by a 10% owner
Part of a cluster of 3 transactions by 3 insiders
Unscheduled trade
46% win rate · +0.9% median edge vs SPY (24 trades, 90-day)
Small Cap stock — insider trades carry more weight
Recent insider activity at SION
Jun 30Orbimed Advisors LlcSold$5.27mMay 27Orbimed Advisors LlcSold$4.49kMay 11Orbimed Capital Gp Viii LlcSold$8.53mMay 8Orbimed Advisors LlcSold$2.66mMay 7Orbimed Advisors LlcSold$2.17mApr 18Orbimed Advisors LlcSold$131.24kApr 17Orbimed Capital Gp Viii LlcSold$2.34mApr 16Orbimed Capital Gp Viii LlcSold$10.29m