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SION - Sionna Therapeutics, Inc.

Insider Sale by Thompson Peter A. (Dir)

1 Month
After Trade
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Trade Summary

3 days ago, Thompson Peter A., 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, Thompson Peter A. now holds 3,020,119 shares of SION.

This sale represents a 14.00% decrease in Thompson Peter A.'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.

Thompson Peter A.

Thompson Peter A.

Dir

Peter A. Thompson is a prominent biotech investor and executive serving as a Director at Sionna Therapeutics, Inc. (SION), where he recently engaged in insider trading activities.[[5]](https://www.quiverquant.com/insiders/1357522/Peter-A.-Thompson) He is recognized as a 10% owner and director across multiple biotechnology firms, including Edgewise Therapeutics Inc (EWTX), PMV Pharmaceuticals Inc (PMVP), Prevail Therapeutics Inc (PRVL), and Corvus Pharmaceuticals Inc (CRVS), with an estimated net worth exceeding $1.2 billion derived from substantial shareholdings in these companies.[[1]](https://www.gurufocus.com/insider/29383/peter-a.-thompson) Thompson has a distinguished career in biopharmaceuticals, having founded Emergent Product Development Seattle in 1999, where he served as Chairman, President, and CEO from 2002 to 2009.[[3]](https://www.marketscreener.com/insider/PETER-THOMPSON-A06XL6/) He co-founded Terremoto Biosciences, Inc., acting as CEO, and has been involved in establishing companies like Silverback Therapeutics, Inc.[[3]](https://www.marketscreener.com/insider/PETER-THOMPSON-A06XL6/) His extensive portfolio reflects deep expertise in health technology and drug development, with ownership in 16 companies reported via SEC filings.[[1]](https://www.gurufocus.com/insider/29383/peter-a.-thompson)

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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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