SCHEDULE 13G: Third Rock Ventures Discloses Significant Beneficial Ownership in Septerna, Inc.

Third Rock Ventures entities have disclosed beneficial ownership of 14.0% and 7.1% stakes in Septerna, Inc. common stock, totaling 9,368,047 shares.

Summary

• Third Rock Ventures V, L.P. and its related general partners (Third Rock Ventures GP V, L.P. and TRV GP V, LLC) collectively beneficially own 6,215,591 shares of Septerna, Inc. Common Stock.
• This ownership represents approximately 14.0% of Septerna, Inc.'s outstanding common stock.
• Third Rock Ventures VI, L.P. and its related general partners (Third Rock Ventures GP VI, L.P. and TRV GP VI, LLC) collectively beneficially own 3,152,456 shares of Septerna, Inc. Common Stock.
• This ownership represents approximately 7.1% of Septerna, Inc.'s outstanding common stock.
• The beneficial ownership percentages are calculated based on 44,402,742 shares of common stock issued and outstanding as of November 11, 2024, as disclosed in Septerna, Inc.'s 10-Q filing on November 20, 2024.
• All reporting persons (Third Rock Ventures V, L.P., Third Rock Ventures GP V, L.P., TRV GP V, LLC, Third Rock Ventures VI, L.P., Third Rock Ventures GP VI, L.P., and TRV GP VI, LLC) disclaim the existence of a 'group' for purposes of Rule 13d-5 of the Securities Exchange Act of 1934.

Sentiment

Score: 7

Explanation: The disclosure of significant beneficial ownership by a prominent venture capital firm like Third Rock Ventures is generally viewed positively, indicating strong institutional backing and potential confidence in the company's future prospects.

Positives

• A significant beneficial ownership stake by a reputable venture capital firm like Third Rock Ventures may signal confidence in Septerna, Inc.'s long-term prospects and strategic direction.
• The combined ownership of 9,368,047 shares by Third Rock Ventures entities represents a substantial institutional commitment to Septerna, Inc., potentially indicating strong belief in the company's value.

Future Outlook

NA

Industry Context

This filing indicates a significant investment by a venture capital firm specializing in life sciences, which is common for early-stage or growth-phase biotechnology companies like Septerna, Inc. It suggests continued investor interest and confidence in the biotech sector, particularly in companies with promising therapeutic platforms.

Stakeholder Impact

• Shareholders: The disclosure of a significant institutional investor holding a substantial stake may increase investor confidence and potentially influence stock valuation positively, signaling strong backing.

Key Dates

Keywords

Septerna Inc, Third Rock Ventures, Schedule 13G, Beneficial Ownership, Common Stock, Institutional Investor, Venture Capital, SEC Filing