Sat, Apr 18, 2026
Apr 18
2,948 shares @ $44.52
Decreased holdings by -0.10%
162nd largest trade (out of 310)
Trade made by a director
10b5-1 scheduled trade
58% win rate · +9.9% median edge vs SPY (201 trades, 90-day)
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 17OrbiMed Capital GP VIII LLCSold$2.34mApr 16OrbiMed Capital GP VIII LLCSold$10.29mApr 15ORBIMED ADVISORS LLCSold$10.53m