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© 2026 DataHeimdall. All rights reserved.Data sourced from SEC EDGAR public filings.
Insider Trades

SION

Sionna Therapeutics, Inc.

Superinvestors

Institutional investors holding SION

Consensus →
InvestorFundWeightSharesValueQuarter
Viking Global InvestorsViking Global Investors0.36%3,195,181$128.1M2026Q1
Polen Capital ManagementPolen Capital Management0.01%26,775$1.1M2026Q1

Congressional Activity

Congressional data coming soon

Insider Activity

4

Total trades

$4.9M

Volume

0

Buys

4

Sells

Last trade: Apr 17, 2026

Insider Tradeslast 90 days

DateInsiderTypeValue
Apr 17, 2026ORBIMED ADVISORS LLCSell$2.3M
Apr 17, 2026ORBIMED ADVISORS LLCSell$131K

Congressional Tradeslast 90 days

Congressional trade data is being sourced and will appear here shortly.

Apr 17, 2026
Peter A. Thompson
Sell
$2.3M
Apr 17, 2026Peter A. ThompsonSell$131K