Companies / Cabaletta Bio, Inc.
Cabaletta Bio, Inc.
Nasdaq: CABACIK 1759138PHILADELPHIA, PA
Financials
Ownership
169.5M shares outstanding · as of Aug 7, 2026
Ownership
| Insiders | 0.75% | 1,275,700 |
| 10%+ / strategic | 28.33% | 48,026,237 |
| Institutions | 50.14% | 85,015,131 |
| Public float | 20.78% | 35,228,377 |
% of common shares outstanding (exact, from the latest cover-page filing). Institutions are quarterly 13F snapshots; insiders reflect current officers & directors.
Insiders 11
View all →| Insider | % of shares | Shares |
|---|---|---|
Nichtberger StevenCEOPresident & CEO · Director | 0.61% | 1,031,483 |
Simon MarkDirector | 0.09% | 147,205 |
Binder GwendolynPresident, Science & Tech. | 0.02% | 31,312 |
Tomasello ShawnDirector | 0.01% | 22,725 |
Gavel SteveChief Commercial Officer | 0.01% | 22,170 |
Chang David J.Chief Medical Officer | <0.01% | 8,800 |
Gerard MichaelGeneral Counsel | <0.01% | 6,600 |
Bollard CatherineDirector | <0.01% | 5,405 |
Das ArunChief Business Officer | — | — |
Henriques Richard C JrDirector | — | — |
Institutional holders 104
View all →| Holder | Value | % of shares |
|---|---|---|
| $33.45M | 6.34% | |
| $24.38M | 4.62% | |
| $23.75M | 5.21% | |
| $21.19M | 5.71% | |
| $19.50M | 5.25% | |
| $15.88M | 3.48% | |
| $9.68M | 2.61% | |
| $9.64M | 2.60% | |
| $6.72M | 1.47% | |
| $5.86M | 1.29% |
Activity
Jun 30, 2026View all →
InsidersInstitutions
Who's accumulating and trimming this stock (13F).| Date | Actor | Action | Security | Value | Shares Δ | Position after | Impact |
|---|---|---|---|---|---|---|---|
| Q2 2026 as of | BlackRock, Inc. 13F manager | Add | — | $26.21M | +8.4M +361.88% | 10,754,701 6.34% of shares | medium |
| Q2 2026 as of | State Street Corporation 13F manager | Add | — | $23.06M | +7.4M +1742.47% | 7,839,305 4.62% of shares | medium |
| Q1 2026 as of | Millennium Management LLC 13F manager | Add | — | $8.52M | +3.2M +115.69% | 5,903,281 3.48% of shares | medium |
| Q1 2026 as of | Marshall Wace, LLP 13F manager | Add | — | $3.28M | +1.2M +127.28% | 2,179,818 1.29% of shares | low |
| Q1 2026 as of | Cantor Fitzgerald, L. P. 13F manager | New | — | $2.06M | +765K | 765,000 0.45% of shares | low |
| Q1 2026 as of | Two Sigma Investments, LP 13F manager | Add | — | $1.77M | +658K +35.77% | 2,497,917 1.47% of shares | low |
| Q4 2023 as of | Barclays PLC 13F manager | Add | — | $1.46M | +64K +99.85% | 129,072 0.08% of shares | low |
| Q1 2026 as of | Renaissance Technologies LLC 13F manager | Add | — | $1.38M | +514K +33.76% | 2,036,663 1.20% of shares | low |
5%+ ownership events
Schedule 13D / 13G
| Filer | Stance | % of class |
|---|---|---|
| Millennium Management LLC | Passive13G | — |
| Alyeska Investment Group, L.P. | Passive13G/A | — |
| Cormorant Asset Management, LP | Passive13G/A | — |
| T. Rowe Price Investment Management, Inc. | Passive13G/A | — |
| Prudential Financial Inc | Passive13G/A | — |
Securities
via CUSIP / OpenFIGI
| Symbol | Type | CUSIP |
|---|---|---|
| CABA | — | 12674W109 |