Skip to content

Peter Kolchinsky, Director at Sionna Therapeutics, sold SION on Sep 17, 2026

Data as of Oct 16

▼ SELL$252K33,800 shares at $7.46Peter Kolchinsky DirectorSION Sionna Therapeutics, Inc.
Watch SION
Traded
Sep 17, 2026
Disclosed
Sep 21, 2026
Filed
4 days after the trade

Form 4s are due within two business days.

Official filing (SEC Form 4) ↗

The price around the disclosure

Peter Kolchinsky, Director at Sionna Therapeutics, sold SION on Sep 17, 2026TRADEDDISCLOSED
SIONSimilar stocks (XLV — its sector index fund), rebased to SION's price on the disclosure day
SION since disclosure
−35.2%
after the sale
Similar stocks (XLV) since disclosure
+4.6%
XLV — its sector index fund

Change in closing price from Sep 21, 2026 (the first trading day on or after disclosure) to Oct 16, 2026. Dividends excluded. Not a return anyone earned.

Our take

None of our tested rules fired on this trade.

Other trades in the same filing

  1. ▼ SELLRA Capital Nexus Fund, L.P. DirectorSION Sionna Therapeutics, Inc.$252Kdisclosed Sep 21 · filed 4 days after the trade
  2. ▼ SELLRA Capital Nexus Fund III, L.P. DirectorSION Sionna Therapeutics, Inc.$252Kdisclosed Sep 21 · filed 4 days after the trade
  3. ▼ SELLRajeev M. Shah DirectorSION Sionna Therapeutics, Inc.$21.6Mdisclosed Sep 21 · filed 4 days after the trade
  4. ▼ SELLRA Capital Nexus Fund III, L.P. DirectorSION Sionna Therapeutics, Inc.$21.6Mdisclosed Sep 21 · filed 4 days after the trade
  5. ▼ SELLRa Capital Management, L.P. DirectorSION Sionna Therapeutics, Inc.$252Kdisclosed Sep 21 · filed 4 days after the trade
  6. ▼ SELLRA Capital Nexus Fund, L.P. DirectorSION Sionna Therapeutics, Inc.$21.6Mdisclosed Sep 21 · filed 4 days after the trade
  7. ▼ SELLRA Capital Healthcare Fund LP DirectorSION Sionna Therapeutics, Inc.$21.6Mdisclosed Sep 21 · filed 4 days after the trade
  8. ▼ SELLPeter Kolchinsky DirectorSION Sionna Therapeutics, Inc.$21.6Mdisclosed Sep 21 · filed 4 days after the trade
  9. ▼ SELLRA Capital Healthcare Fund LP DirectorSION Sionna Therapeutics, Inc.$252Kdisclosed Sep 21 · filed 4 days after the trade
  10. ▼ SELLRajeev M. Shah DirectorSION Sionna Therapeutics, Inc.$252Kdisclosed Sep 21 · filed 4 days after the trade
  11. ▼ SELLRa Capital Management, L.P. DirectorSION Sionna Therapeutics, Inc.$21.6Mdisclosed Sep 21 · filed 4 days after the trade

See every trade on SION →