SCHEDULE 13G/A: Driehaus Capital Management Boosts Stake in Septerna, Inc. to Over 7%

Driehaus Capital Management LLC has filed an amended Schedule 13G, disclosing an increased beneficial ownership in Septerna, Inc. to 7.03% as of March 31, 2025, up from 5.83% at the end of 2024.

Summary

• Driehaus Capital Management LLC (DCM) filed an Amendment No. 1 to Schedule 13G regarding its beneficial ownership in Septerna, Inc. (SEPN).
• As of March 31, 2025, DCM beneficially owned 3,122,608 shares of Septerna, Inc. Common Stock.
• This represents 7.03% of Septerna, Inc.'s class of securities.
• This percentage is an increase from the 5.83% ownership reported as of December 31, 2024.
• DCM holds these shares with shared voting power and shared dispositive power.
• The shares are held by numerous clients on a fully discretionary basis in accounts managed by DCM.
• DCM certifies that the securities were acquired and are held in the ordinary course of business and not for the purpose of changing or influencing the control of the issuer.

Sentiment

Score: 7

Explanation: The increase in beneficial ownership by a reputable investment management firm suggests a positive signal of confidence in the company, although the document itself is purely a disclosure and does not contain operational or financial performance details.

Positives

• Driehaus Capital Management LLC, an investment adviser, increased its beneficial ownership in Septerna, Inc. from 5.83% to 7.03%, indicating continued or increased confidence in the company.
• The investment firm holds a significant stake, demonstrating a notable institutional presence in Septerna's shareholder base.

Future Outlook

The document, a Schedule 13G filing, is a disclosure of beneficial ownership and does not contain forward-looking statements or guidance regarding Septerna, Inc.'s future performance or Driehaus Capital Management LLC's future investment intentions beyond the current reported stake.

Management Comments

• The filing includes a certification from Driehaus Capital Management LLC stating that the securities were acquired and are held in the ordinary course of business and not for the purpose or with the effect of changing or influencing the control of Septerna, Inc.

Industry Context

This filing reflects an investment firm's increased stake in a publicly traded company, a common occurrence in the financial markets. It indicates Driehaus Capital Management's continued interest in Septerna, Inc., which operates in the biotechnology or pharmaceutical sector given its location in South San Francisco, a major biotech hub. Such institutional ownership changes are closely watched by investors as they can signal confidence or lack thereof in a company within its industry.

Comparison to Industry Standards

• This document is a standard regulatory disclosure of beneficial ownership by an institutional investor. It does not provide specific financial or operational results for Septerna, Inc. that would allow for a direct comparison to industry-specific benchmarks or competitor performance. The increase in institutional ownership by Driehaus Capital Management LLC is a positive signal, but its significance relative to industry standards would depend on Septerna's specific sector, growth prospects, and peer valuations, which are not detailed in this filing.

Stakeholder Impact

• Shareholders may view the increased institutional ownership by Driehaus Capital Management LLC as a positive indicator of investor confidence in Septerna, Inc.

Next Steps

• The document does not outline any specific future actions, events, or milestones for Septerna, Inc. or Driehaus Capital Management LLC beyond the regulatory filing requirement.

Key Dates

Recommendation

Keywords

Septerna Inc., SEPN, Driehaus Capital Management LLC, DCM, Schedule 13G, beneficial ownership, institutional investment, common stock, SEC filing, investment advisor