SCHEDULE: RTW Investments Discloses 6.9% Stake in Alector

RTW Investments, LP and Roderick Wong, M.D. have filed a Schedule 13G disclosing beneficial ownership of 6.9% of Alector, Inc.'s common stock.

Summary

• RTW Investments, LP and Roderick Wong, M.D. are the reporting persons for this Schedule 13G filing.
• They collectively beneficially own 6,990,806 shares of Alector, Inc. Common Stock, $0.0001 par value.
• This ownership represents 6.9% of Alector, Inc.'s outstanding shares.
• The percentage is calculated based on 101,212,329 shares outstanding as of August 1, 2025, as reported in Alector, Inc.'s Quarterly Report on Form 10-Q filed on August 7, 2025.
• The shares were acquired and are held in the ordinary course of business, not for the purpose of changing or influencing control of Alector, Inc.

Sentiment

Score: 7

Explanation: The disclosure of a significant passive stake by a specialized healthcare investment firm like RTW Investments, LP, suggests institutional confidence in Alector, Inc. and its prospects. While not an operational update, it signals a notable investor's belief in the company's value.

Positives

• RTW Investments, LP, a Delaware limited partnership and investment adviser, holds a significant 6.9% stake in Alector, Inc., indicating institutional confidence in the company.
• Roderick Wong, M.D., the Managing Partner and Chief Investment Officer of RTW Investments, also beneficially owns these shares, aligning leadership interests with the investment.

Negatives

• No specific negatives about Alector, Inc. are disclosed in this filing.

Risks

• No specific risks related to Alector, Inc. are mentioned in this filing.

Future Outlook

The filing indicates that the securities were acquired and are held in the ordinary course of business and not for the purpose of changing or influencing control of Alector, Inc.

Management Comments

• Roderick Wong, M.D., Managing Partner of RTW Investments, LP, certified that the information in the statement is true, complete, and correct to the best of his 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 Alector, Inc.

Industry Context

RTW Investments, LP, a prominent investment adviser, specializes in the healthcare sector. Their significant stake in Alector, Inc., a biotechnology company, aligns with typical investment strategies of specialized funds seeking exposure to innovative drug development and life sciences.

Comparison to Industry Standards

• NA

Stakeholder Impact

• Shareholders: The disclosure of a significant institutional investor holding a 6.9% stake may instill confidence and potentially attract further institutional interest.
• Management: The passive nature of the investment indicates no immediate intent to influence control, allowing current management to continue their strategic direction without direct pressure from this specific investor.

Next Steps

• RTW Investments, LP and Roderick Wong, M.D. will be responsible for timely filing of subsequent amendments to this Schedule 13G.

Key Dates

Recommendation

The filing indicates a significant passive investment by RTW Investments, LP, a specialized healthcare fund, in Alector, Inc. This suggests institutional confidence in the company's long-term prospects. While not an operational update, such a substantial stake from a reputable investor can be viewed as a positive signal, warranting a 'hold' for existing investors and further due diligence for potential new investors.

Keywords

Alector Inc, ALEC, RTW Investments, Roderick Wong, Schedule 13G, beneficial ownership, common stock, investment adviser, biotechnology, pharmaceuticals