SCHEDULE: Vanguard Group Updates Passive Stake in Cabaletta Bio

The Vanguard Group reported a 3.83% passive beneficial ownership stake in Cabaletta Bio Inc., holding 3,450,727 shares of common stock as of June 30, 2025.

Summary

• The Vanguard Group holds a passive beneficial ownership of 3,450,727 shares of Cabaletta Bio Inc. common stock.
• This ownership represents 3.83% of the class of securities.
• The Vanguard Group has sole dispositive power over 3,429,146 shares and shared dispositive power over 21,581 shares.
• There is no sole or shared voting power reported for these shares.
• The securities were acquired and are held in the ordinary course of business, not for the purpose of changing or influencing control of the issuer.

Sentiment

Score: 5

Explanation: Neutral, as this is a routine disclosure of passive beneficial ownership by a large institutional investor, with no stated intent to influence control or operations.

Positives

• A significant institutional investor, The Vanguard Group, maintains a stake in Cabaletta Bio Inc., indicating its inclusion in their managed portfolios.

Industry Context

The Vanguard Group is one of the world's largest investment management companies, known for its low-cost index funds and ETFs. Its passive ownership stakes in companies like Cabaletta Bio Inc. are typical for broad market or sector-specific index-tracking portfolios, reflecting the company's inclusion in such indices rather than a specific strategic investment decision.

Stakeholder Impact

• Shareholders are informed of a significant institutional holder's passive stake, which can contribute to market liquidity and stability.

Key Dates

Keywords

Cabaletta Bio Inc, Vanguard Group, Beneficial Ownership, Common Stock, SEC Filing, Schedule 13G, Institutional Investor, Passive Investment