Form 4: Alumis Director Boosts Stake via Fund Purchases

Alumis Inc. Director Srinivas Akkaraju reported significant indirect purchases of common stock through Samsara Opportunity Fund, L.P. over three days in December 2025.

Summary

• Srinivas Akkaraju, a Director of Alumis Inc. (ALMS), reported indirect acquisitions of common stock through Samsara Opportunity Fund, L.P.
• On December 2, 2025, 96,000 shares were purchased at a weighted average price of $7.55 per share, with prices ranging from $7.41 to $7.92.
• On December 3, 2025, an additional 100,000 shares were acquired at a weighted average price of $7.75 per share, with prices ranging from $7.41 to $7.96.
• On December 4, 2025, 66,027 shares were bought at a weighted average price of $8.18 per share, with prices ranging from $7.65 to $8.41.
• Following these transactions, Samsara Opportunity Fund, L.P. beneficially owns 1,078,876 shares.
• Samsara BioCapital, L.P. also beneficially owns 4,491,731 shares, with Mr. Akkaraju being a managing member of its general partner.
• The transactions were made pursuant to a Rule 10b5-1(c) plan, indicating a pre-arranged purchase plan.

Sentiment

Score: 8

Explanation: The sentiment is positive due to significant insider buying by a director, which typically signals strong confidence in the company's valuation and future prospects. The purchases were also made under a Rule 10b5-1 plan, indicating a deliberate, pre-planned investment.

Positives

• A company director, Srinivas Akkaraju, significantly increased his indirect beneficial ownership in Alumis Inc. through fund purchases, signaling strong confidence in the company's future prospects.
• The purchases were executed under a Rule 10b5-1(c) plan, which suggests a pre-planned investment strategy rather than a reaction to immediate market events.

Future Outlook

This Form 4 filing does not contain any forward-looking statements or guidance regarding the company's future performance or strategic direction.

Management Comments

• Srinivas Akkaraju disclaims beneficial ownership in the securities held by Samsara Opportunity Fund, L.P. and Samsara BioCapital, L.P. except to the extent of his pecuniary interest therein.

Industry Context

This filing reports an insider transaction, which is specific to the company and its management's investment activities, rather than reflecting broader industry trends. However, significant insider buying can be interpreted by the market as a positive signal for the company within its industry.

Related Party Transactions

• Srinivas Akkaraju, a Director of Alumis Inc., has voting and investment power over shares held by Samsara Opportunity Fund, L.P., and is a managing member of Samsara BioCapital GP, LLC, the general partner of Samsara BioCapital, L.P. The reported transactions involve these entities, indicating related party dealings in the context of beneficial ownership.

Stakeholder Impact

• Shareholders may view the director's increased stake as a positive indicator of management's belief in the company's value, potentially boosting investor confidence.
• The market might interpret this insider buying as a signal of undervaluation or strong future performance, which could positively influence the stock price.

Key Dates

Recommendation

The significant and repeated purchases of common stock by a company director, Srinivas Akkaraju, through associated investment funds, signals strong insider confidence in Alumis Inc.'s future prospects and current valuation. Such insider buying, especially when executed under a Rule 10b5-1 plan, is often interpreted by seasoned investors as a bullish indicator, suggesting that the stock may be undervalued or poised for positive developments. This action provides a compelling reason to consider a 'buy' recommendation, as it aligns management's interests more closely with shareholders and suggests a belief in long-term growth.

Keywords

Alumis Inc., ALMS, Srinivas Akkaraju, Insider Trading, Form 4, Stock Purchase, Director, Samsara Opportunity Fund, Samsara BioCapital, Beneficial Ownership