Thu, Jan 22, 2026
Jan 22
250,000 shares @ $40.00
Decreased holdings by -3.70%
16th largest trade (out of 58)
Large Trade
Trade made by a 10% owner
Unscheduled trade
48% win rate · +2.0% median edge vs SPY (25 trades, 90-day)
Price 63% above 200-day moving average
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