CABA · Insider trading · 13F holders · Congress trades
Cabaletta Bio Inc (CABA)
Who is buying and selling CABA: company insiders on SEC Form 4, hedge funds and superinvestors on Form 13F, and members of Congress under the STOCK Act. Every figure links to the filing or page it comes from.
- 13F filers holding
- 7
- Insider buys, 90 days
- $0
- Insider sales, 90 days
- $0
- Congress trades, 12 months
- 0
CABA at a glance
- No open-market insider purchases or sales of CABA were filed in the last 90 days.
- 7 13F filers hold CABA among their 50 largest positions, worth $91.3M combined. The biggest bets by portfolio weight are Bain Capital Life Sciences Investors, LLC (3.2%), Superstring Capital Management LP (2.2%) and Stonepine Capital Management, LLC (2.2%). In their latest 13Fs, 0 managers opened a new position and 3 added to one.
- No member of Congress has disclosed a trade in CABA.
CABA insider trading
No open-market insider purchases or sales of CABA were filed in the last 90 days.
Who owns CABA? Hedge funds and superinvestors
7 13F filers hold CABA among their 50 largest positions, worth $91.3M combined. The biggest bets by portfolio weight are Bain Capital Life Sciences Investors, LLC (3.2%), Superstring Capital Management LP (2.2%) and Stonepine Capital Management, LLC (2.2%). In their latest 13Fs, 0 managers opened a new position and 3 added to one.
| Manager | % of portfolio | Value | Shares | Last quarter | 13F |
|---|---|---|---|---|---|
| Bain Capital Life Sciences Investors, LLCAsset manager | 3.2% | $53.6M | 17,241,445 | +78.2% shares | Q2 2026 |
| Cormorant Asset Management, LPHedge fund | 0.8% | $15.6M | 5,000,000 | -9.1% shares | Q2 2026 |
| Opaleye Management Inc.Hedge fund | 1.1% | $12.0M | 3,863,800 | +180.0% shares | Q2 2026 |
| Superstring Capital Management LPHedge fund | 2.2% | $3.5M | 1,278,652 | +19.9% shares | Q2 2026 |
| Stonepine Capital Management, LLCHedge fund | 2.2% | $2.9M | 917,100 | — | Q2 2026 |
| Blue Owl Capital Holdings LPHedge fund | 0.3% | $2.2M | 714,710 | — | Q2 2026 |
| KVP Capital Advisors, LPHedge fund | 1.2% | $1.6M | 505,431 | +0.0% shares | Q2 2026 |
Each manager counts with its latest 13F (Q2 2026: 7). Screen CABA in the grand portfolio →
CABA stock trades by members of Congress
No member of Congress has disclosed a trade in CABA.
CABA questions and answers
Are insiders buying CABA stock?
No open-market insider purchases or sales of CABA were filed in the last 90 days.
Which hedge funds own CABA?
7 13F filers hold CABA among their 50 largest positions, worth $91.3M combined. The biggest bets by portfolio weight are Bain Capital Life Sciences Investors, LLC (3.2%), Superstring Capital Management LP (2.2%) and Stonepine Capital Management, LLC (2.2%). In their latest 13Fs, 0 managers opened a new position and 3 added to one.
Has Congress traded CABA?
No member of Congress has disclosed a trade in CABA.
Who is the largest holder of CABA?
Among 13F filers, Bain Capital Life Sciences Investors, LLC reports the largest CABA position, $53.6M (17,241,445 shares) in its Q2 2026 13F. The biggest bet by portfolio weight is Bain Capital Life Sciences Investors, LLC's: 3.2% of its portfolio.
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