Thu, Jun 12, 2025
Jun 12
19,959 shares @ $0.00
New position
81st largest trade (out of 124)
Cluster Buy
Trade made by a director
Part of a cluster of 6 transactions by 6 insiders
Unscheduled trade
9% win rate · -25.7% median edge vs SPY (11 trades, 90-day · small sample)
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