RA Capital Healthcare Fund LP bought $18.4M of SION

bought $18.41m of SION

1,022,586 shares @ $18.00

Increased holdings by +17.30%

42nd largest trade (out of 424)

Large TradeCluster Buy

Trade made by a director

Part of a cluster of 48 transactions by 16 insiders

Unscheduled trade

43% win rate · -9.3% median edge vs SPY (119 trades, 90-day)

Insider trade was 19% below market price

Micro Cap stock — higher insider information edge

SIONSionna Therapeutics, Inc.

HealthcareBiotechnology

1D0.00%

1W+4.29%

1M+16.44%

3M—

6M—

1Y—

Recent insider activity at SION