SCHEDULE: Deep Track Capital Discloses 6.31% Stake in 89bio

Deep Track Capital, along with its affiliates, has reported a 6.31% beneficial ownership stake in 89bio, Inc., holding 9,356,171 shares of common stock.

Summary

• Deep Track Capital, LP, Deep Track Biotechnology Master Fund, Ltd., and David Kroin collectively reported beneficial ownership of 9,356,171 shares of 89bio, Inc. common stock.
• This ownership represents 6.31% of 89bio, Inc.'s outstanding common stock.
• The ownership percentage is calculated based on 148,308,250 common shares outstanding as of July 31, 2025, as reported in 89bio's 10-Q filing on August 8, 2025.
• The reporting persons share both voting and dispositive power over all 9,356,171 shares.
• The securities were not acquired for the purpose of changing or influencing control of the issuer.

Sentiment

Score: 7

Explanation: The disclosure of a significant 6.31% stake by a specialized institutional investor like Deep Track Capital is generally a positive signal, indicating confidence in the company's value or prospects. While it's a factual ownership report, the presence of such an investor is often viewed favorably by the market.

Positives

• A significant institutional investor, Deep Track Capital, holding a 6.31% stake in 89bio, Inc. can be interpreted as a vote of confidence in the company's future prospects.
• The disclosure of a substantial institutional position may attract further investor interest and potentially stabilize the stock price.

Future Outlook

This filing is a disclosure of beneficial ownership and does not contain forward-looking statements or guidance from the issuer or the reporting persons regarding the issuer's future performance.

Industry Context

The filing indicates a significant investment by a specialized biotechnology fund in 89bio, Inc., a company operating within the biotechnology sector. This suggests that the fund sees potential value or strategic alignment within the current biotech landscape, though the filing itself does not provide specific industry analysis.

Stakeholder Impact

• Shareholders: The disclosure of a significant institutional holder may influence investor sentiment and potentially the stock's liquidity and stability.
• Company Management: Awareness of a substantial institutional investor's stake may influence strategic decisions, although the filing explicitly states the shares were not acquired to influence control.

Key Dates

Keywords

89bio, Deep Track Capital, Deep Track Biotechnology Master Fund, David Kroin, beneficial ownership, institutional investor, common stock, biotechnology, SEC filing, Schedule 13G