Insider filing · SION

Elena Ridloff sold $418K of Sionna Therapeutics (SION)

Executed Aug 28 2025, disclosed Aug 28 2025, the same day.

Returns are measured on stock purchases only.

ER Elena Ridloff Director profile →

Elena Ridloff (Director) filed 2 Form 4 reports in the trailing twelve months (0 purchases, 2 sales), most often in Kymera Therapeutics, Inc. (KYMR). The largest single filing was $1.0M of KYMR (12,000 sh across 3 lots, as filed), executed Mar 31.

SION Sionna Therapeutics, Inc. SION · Healthcare · 45 filings in 24 months ticker →

Healthcare · Sionna Therapeutics, Inc., a clinical-stage biopharmaceutical company, researches and develops medicines for the treatment of cystic fibros…

More Healthcare filings→ Insider filings, newest first→ View the original filing at www.sec.gov→