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BlackRock, Inc.

Position in SION — Sionna Therapeutics, Inc.

CIK 2012383 New York, NY

Position in SION

as of Jun 30, 2026 · filed Aug 7, 2026
Position Value
$64,875,084
+$12,923,781 QoQ
Shares Held
1,474,769
+13.8% QoQ
Ownership
3.26%
of shares outstanding
% of Portfolio
0.00%
of 13F equity value
Holder Rank
#9
of 146 holders
Holding Since
Mar 2025
6 quarters on record
Voting authority Sole 98% Shared 0% None 2%

Common Shares in SION Over Time

Shares Held

Position Value (USD)

Position in Biotechnology

Healthcare · as of Jun 30, 2026

BlackRock, Inc. holds $85,603,777,939 across 474 Biotechnology names. SION ranks #148 (0.1% of the industry book) .

# Ticker Company Shares Value (USD) Open

All Filings in SION

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6 filing rows on record
Report Date Value (USD) Shares
2026-06-30 $64,875,084 1,474,769
2026-03-31 $51,951,303 1,295,867
2025-12-31 $53,136,379 1,291,599
2025-09-30 $24,839,831 844,605
2025-06-30 $11,053,753 637,104
2025-03-31 $2,075,218 198,396