Cabaletta Bio Inc
Ownership
Ownership Structure
Who owns Cabaletta Bio Inc (CABA)? This page shows the largest institutions and funds, the ownership structure and the latest insider transactions. 83.4% of the shares are freely tradable; institutional investors hold 63.6%.
Largest Shareholders
Institutions
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| Jennison Associates LLC | 11.82 | 20,033,730 | +123.3 | 06/30/2026 |
| T. Rowe Price Investment Management,Inc. | 6.54 | 11,080,005 | -20.1 | 03/31/2026 |
| Bain Capital Life Sciences Investors, LLC | 5.71 | 9,677,125 | +0.0 | 03/31/2026 |
| Adage Capital Partners Gp LLC | 5.41 | 9,174,758 | +3.9 | 06/30/2026 |
| Cormorant Asset Management, LLC | 3.24 | 5,500,000 | +25.0 | 03/31/2026 |
Funds
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| T. Rowe Price Small-Cap Value | 4.55 | 7,707,477 | -2.0 | 07/31/2026 |
| State Street® SPDR® S&P® Biotech ETF | 3.27 | 5,547,009 | -1.1 | 08/31/2026 |
| Vanguard MStar Total Stk Mkt Idx Invest | 3.08 | 5,215,188 | +0.0 | 07/31/2026 |
| T. Rowe Price U.S. SC Value Eq Tr-D | 3.05 | 5,171,813 | +37.3 | 06/30/2026 |
| Jennison Health Sciences Equity | 2.93 | 4,960,717 | +41.0 | 06/30/2026 |
Largest reported positions according to regulatory filings; stake as a percentage of shares outstanding, change versus the previous filing. Source: fundamentals data.
Data as of: September 17, 2026 · Source: fundamental data & SEC filings (annual and quarterly reports, 10-K/10-Q)
Note: pure fact-based analysis, not investment advice and not a solicitation to buy or sell. All figures without guarantee.