RA Capital Healthcare Fund LP sold $4.8M of SION

sold $4.83m of SION

122,271 shares @ $39.50

Decreased holdings by -14.10%

77th largest trade (out of 424)

Large TradeCluster Buy

Trade made by a director

Part of a cluster of 5 transactions by 2 insiders

Unscheduled trade

53% win rate · +5.4% median edge vs SPY (160 trades, 90-day)

Price 109% above 200-day moving average

Small Cap stock — insider trades carry more weight

SIONSionna Therapeutics, Inc.

HealthcareBiotechnology

1D0.00%

1W+4.29%

1M+16.44%

3M—

6M—

1Y—

Recent insider activity at SION