SCHEDULE: William Blair Boosts Twist Bioscience Stake to 9.7%

William Blair Investment Management, LLC has reported an increased beneficial ownership of 9.7% in Twist Bioscience Corp, holding 5,954,429 shares of common stock.

Summary

• William Blair Investment Management, LLC reported beneficial ownership of 5,954,429 shares of common stock in Twist Bioscience Corp.
• This ownership represents 9.7% of the class of securities.
• William Blair holds sole voting power over 5,459,833 shares and sole dispositive power over all 5,954,429 shares.
• The filing is an Amendment No. 1 to a Schedule 13G.
• The date of the event requiring this filing was December 31, 2025.
• William Blair Investment Management, LLC is classified as an investment adviser (IA).

Sentiment

Score: 7

Explanation: StockSavvy.ai views this as a moderately positive development, indicating strong institutional confidence in Twist Bioscience Corp given William Blair's significant beneficial ownership stake.

Positives

• Increased institutional ownership by William Blair Investment Management, LLC, holding a significant 9.7% of Twist Bioscience Corp's common stock.
• The reporting person certified 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 the issuer.

Negatives

• No shared voting or dispositive power was reported, indicating William Blair acts independently in its investment decisions for these shares.

Risks

• The filing itself does not detail company-specific risks for Twist Bioscience Corp. It primarily concerns the beneficial ownership of William Blair Investment Management, LLC. The certification states the shares were not acquired for the purpose of changing or influencing control, mitigating a potential governance risk from this specific shareholder.

Future Outlook

This filing does not provide forward-looking statements or guidance from Twist Bioscience Corp or William Blair Investment Management, LLC regarding the issuer's future performance.

Industry Context

StockSavvy.ai notes that a significant stake (9.7%) by a prominent investment management firm like William Blair in Twist Bioscience Corp, a synthetic biology company, signals continued institutional interest and confidence in the biotechnology sector, particularly in companies focused on advanced DNA synthesis and genomics. This could reflect a positive long-term view on the company's technology and market position.

Comparison to Industry Standards

• A 9.7% beneficial ownership stake by an institutional investor is a substantial position, often indicating a high conviction in the company's prospects. While specific comparable companies or projects are not mentioned in this filing, such a stake is generally considered a strong vote of confidence, aligning with typical institutional investment strategies in growth sectors like biotech where firms seek significant exposure to innovative leaders.

Stakeholder Impact

• Shareholders may perceive the increased institutional ownership by William Blair Investment Management, LLC as a positive signal, potentially bolstering investor confidence and market stability for Twist Bioscience Corp.

Key Dates

Keywords

Twist Bioscience Corp, William Blair Investment Management, Beneficial Ownership, Schedule 13G, Common Stock, Institutional Investor, Biotechnology, Synthetic Biology