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SION - Sionna Therapeutics, Inc.

Insider Sale by Orbimed Advisors LLC (Dir)

1 Month
After Trade
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Trade Summary

3 days ago, Orbimed Advisors LLC, serving as Dir at Sionna Therapeutics, Inc. (SION), sold 510,583 shares at $44.94 per share, for a total transaction value of $22,945,044.00. Following this transaction, Orbimed Advisors LLC now holds 3,020,119 shares of SION.

This sale represents a 14.00% decrease in Orbimed Advisors LLC's stake in the company. This is considered a high-conviction trade given the significant change in ownership.

The trade was executed on Tuesday, April 14, 2026 and publicly disclosed via SEC Form 4 filing on Thursday, April 16, 2026, 2 days after the trade was made.

Sionna Therapeutics, Inc. operates in the HEALTHCARE sector, specifically within the BIOTECHNOLOGY industry. Insider selling activity in this sector can provide valuable signals about industry trends and company-specific developments.

Orbimed Advisors LLC

Dir

OrbiMed Advisors LLC is a leading healthcare-focused investment firm headquartered in New York City, founded in 1989 as the successor to Mehta & Isaly by Samuel Isaly.[[1]](https://fintool.com/app/research/funds/private-equity/orbimed-advisors-llc)[[3]](https://en.wikipedia.org/wiki/OrbiMed) Specializing in public and private investments across biopharmaceuticals, medical devices, diagnostics, digital health, and healthcare services, the firm manages approximately $20 billion in assets under management (AUM) with a global team of over 150 professionals across 12 locations.[[2]](https://www.orbimed.com)[[1]](https://fintool.com/app/research/funds/private-equity/orbimed-advisors-llc) OrbiMed invests globally in innovative healthcare companies from early-stage startups to large multinationals, supporting over 500 portfolio companies and backing more than 130 venture-backed IPOs.[[2]](https://www.orbimed.com) As a corporate insider listed as 'Dir.' at Sionna Therapeutics, Inc. (SION), OrbiMed has recently engaged in trading activities there, consistent with its active 13F filings showing a $4 billion portfolio as of June 30, 2025, with top holdings including Sinovac Biotech, Boston Scientific, and Eli Lilly.[[1]](https://fintool.com/app/research/funds/private-equity/orbimed-advisors-llc)[[4]](https://whalewisdom.com/filer/orbimed-advisors-llc)

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Trade Price

$44.94

Quantity

510,583

Total Value

$22,945,044.00

Shares Owned

3,020,119

Trade Date

Tuesday, April 14, 2026

3 days ago

SEC Filing Date

Thursday, April 16, 2026

Filed 2 days after trade

HEALTHCAREBIOTECHNOLOGY

About Sionna Therapeutics, Inc.

Company Overview

No company information available
View news mentioning SION

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