SCHEDULE: Driehaus Capital Boosts Korro Bio Stake to 7.16%

Driehaus Capital Management LLC has increased its beneficial ownership in Korro Bio, Inc. to 7.16% of common stock as of September 30, 2025.

Summary

• Driehaus Capital Management LLC (DCM) reported beneficial ownership of 671,981 shares of Korro Bio, Inc. common stock.
• This represents 7.16% of Korro Bio, Inc.'s outstanding common stock as of September 30, 2025.
• The ownership percentage increased from 5.28% as of December 31, 2024.
• DCM, an investment adviser, holds these shares for numerous clients on a fully discretionary basis.
• The securities were acquired and are held in the ordinary course of business, not for the purpose of changing or influencing control of the issuer.

Sentiment

Score: 7

Explanation: The sentiment is positive due to a significant increase in institutional ownership by Driehaus Capital Management LLC, suggesting growing confidence in Korro Bio, Inc. from a reputable investment adviser.

Positives

• Driehaus Capital Management LLC increased its beneficial ownership in Korro Bio, Inc. from 5.28% to 7.16%, indicating increased institutional confidence.
• The acquisition of shares is stated to be in the ordinary course of business, suggesting a standard investment strategy rather than an activist position.

Future Outlook

No specific forward-looking statements or guidance are provided by Korro Bio, Inc. in this beneficial ownership report.

Management Comments

• Driehaus Capital Management LLC certifies that, to the best of its knowledge and belief, the securities were acquired and are held in the ordinary course of business and not for the purpose of or with the effect of changing or influencing the control of the issuer.

Industry Context

An increase in institutional ownership, particularly by an investment adviser like Driehaus Capital Management, can signal growing confidence in a company's prospects within its sector. This type of filing provides transparency into significant investor positions, which can influence market sentiment and potentially attract further institutional interest in Korro Bio, Inc.

Stakeholder Impact

• Shareholders may view the increased institutional ownership as a positive indicator of the company's value and future prospects, potentially leading to increased investor confidence.
• The market may interpret the increased stake by Driehaus Capital Management LLC as a bullish signal, potentially influencing trading activity and valuation.

Key Dates

Recommendation

The increase in Driehaus Capital Management LLC's stake in Korro Bio, Inc. to 7.16% indicates continued institutional confidence in the company. While not a direct performance indicator, such an increase by a reputable investment adviser suggests a positive long-term view, warranting a 'hold' for existing investors and potentially attracting new interest, but without further fundamental analysis, a stronger recommendation is not justified.

Keywords

Korro Bio, KRRO, Driehaus Capital Management, DCM, Beneficial Ownership, Common Stock, Investment Adviser, Institutional Investor