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Sionna Therapeutics shares owned by Siren

Quarter-by-quarter ownership of Sionna Therapeutics (SION) shares owned by Siren from 13F filings

Historical chart of Siren investment in Sionna Therapeutics

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All positions including Sionna Therapeutics held by Siren consolidated in one spreadsheet with up to 7 years of data

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Quarterly reported holdings in Sionna Therapeutics by Siren

Quarter filed Position value Share count Share price at filing
2025-09-30 $9.6M 325k 29.41
2025-06-30 $5.6M 325k 17.35
2025-03-31 $3.4M 325k 10.46