Sat, Apr 18, 2026
Apr 18
2,948 shares @ $44.52
Decreased holdings by -0.10%
164th largest trade (out of 311)
Planned (10b5-1)
Trade made by a director
Executed under a pre-scheduled Rule 10b5-1 plan
56% win rate · +9.8% median edge vs SPY (195 trades, 90-day)
Win rate excludes trades classified as routine (tax, 10b5-1, exercise, gift).
Recent insider activity at SION
Jul 7Orbimed Capital Gp Viii LlcSold$3.85mJul 6Jennifer FitzpatrickSold$446.86kJun 30Orbimed Advisors LlcSold$5.27mMay 27Orbimed Advisors LlcSold$4.49kMay 11Orbimed Advisors LlcSold$8.53mMay 8Orbimed Advisors LlcSold$2.66mMay 7Orbimed Advisors LlcSold$2.17mApr 17Orbimed Capital Gp Viii LlcSold$2.34m