Cabaletta Bio, Inc.
CABAAs of the close on Sep 25, 2026
Price
$2.07
Market cap
—
The cover-page share count does not match the latest report's share count
P/E (diluted TTM)
—
The fourth quarter's per-share figure could not be confirmed from the annual report
EPS (TTM)
—
The fourth quarter's per-share figure could not be confirmed from the annual report
Dividend yield
—
Dividend records do not yet cover the latest payments
Figures shown here come from public SEC filings. Dates beside each section show the available history.
How Cabaletta Bio, Inc. Makes Money
No flow chart is shown because the available revenue and expense lines do not reconcile exactly. The reported financial history below remains available.
Financial Summary
Choose a year or quarter, compare it with the same period a year earlier, and open any row for its full filing history.
Loading financial history…
SEC filings supply these figures; updates after the dates shown are not included. This page includes 8 annual periods. The latest annual period ends Dec 31, 2025. The latest insider filing shown is dated Jun 10, 2026. The latest institutional report shown is dated Mar 31, 2026; other ownership filings may exist.
Ownership
Who holds the shares, as reported in SEC ownership filings.
Reported 13F positions
Each row shows what a filer reported for one date, not a current position. The link opens that filing.
| Filer | Report date | Shares | Value | Filing |
|---|---|---|---|---|
| SummitTX Capital, L.P. | 2026-03-31 | 12,522 | $33.7K | SEC filing |
| WINTON GROUP Ltd | 2026-03-31 | 15,300 | $41.2K | SEC filing |
| OSAIC HOLDINGS, INC. | 2026-03-31 | 2,907 | $7.82K | SEC filing |
| SUPERSTRING CAPITAL MANAGEMENT LP | 2026-03-31 | 1,066,239 | $2.87M | SEC filing |
| Invesco Ltd. | 2026-03-31 | 192,383 | $518K | SEC filing |
| Opaleye Management Inc. | 2026-03-31 | 1,380,000 | $3.71M | SEC filing |
| Catalyst Funds Management Pty Ltd | 2026-03-31 | 21,300 | $57.3K | SEC filing |
| DIMENSIONAL FUND ADVISORS LP | 2026-03-31 | 740,648 | $1.99M | SEC filing |
| Quadrature Capital Ltd | 2026-03-31 | 87,060 | $234K | SEC filing |
| BRIDGEWAY CAPITAL MANAGEMENT, LLC | 2026-03-31 | 267,372 | $719K | SEC filing |
| FMR LLC | 2026-03-31 | 12,991 | $34.9K | SEC filing |
| BlackRock, Inc. | 2026-03-31 | 2,373,003 | $6.38M | SEC filing |
| Bain Capital Life Sciences Investors, LLC | 2026-03-31 | 9,677,125 | $26M | SEC filing |
| AMERICAN CENTURY COMPANIES INC | 2026-03-31 | 108,319 | $291K | SEC filing |
| Kestra Advisory Services, LLC | 2026-03-31 | 11,750 | $31.6K | SEC filing |
| Rockefeller Capital Management L.P. | 2026-03-31 | 2,000 | $5.38K | SEC filing |
| Qube Research & Technologies Ltd | 2026-03-31 | 1,934,990 | $5.21M | SEC filing |
| Russell Investments Group, Ltd. | 2026-03-31 | 939 | $2.53K | SEC filing |
| NOMURA HOLDINGS INC | 2026-03-31 | 95,512 | $257K | SEC filing |
| NORTHWESTERN MUTUAL WEALTH MANAGEMENT CO | 2026-03-31 | 60 | $161 | SEC filing |
Filer report history
Two reports per filer, as filed. No change is calculated, because the data on file cannot confirm that both reports describe the same security.
- ROYAL BANK OF CANADA: 123 shares reported 2025-12-31; 781 shares reported 2026-03-31.
- TWO SIGMA INVESTMENTS, LP: 1,839,799 shares reported 2025-12-31; 2,497,917 shares reported 2026-03-31.
- FRED ALGER MANAGEMENT, LLC: 28,021 shares reported 2025-12-31; 23,157 shares reported 2026-03-31.
- OMERS ADMINISTRATION Corp: 95,400 shares reported 2025-12-31; 54,100 shares reported 2026-03-31.
- Balyasny Asset Management L.P.: 51,552 shares reported 2025-12-31; 11,154 shares reported 2026-03-31.
- 683 Capital Management, LLC: 388,562 shares reported 2025-12-31; 225,000 shares reported 2026-03-31.
- GEODE CAPITAL MANAGEMENT, LLC: 1,085,816 shares reported 2025-12-31; 1,133,245 shares reported 2026-03-31.
- Burkehill Global Management, LP: 700,000 shares reported 2025-12-31; 700,000 shares reported 2026-03-31.
- Mirae Asset Global Investments Co., Ltd.: 4,678 shares reported 2025-12-31; 5,021 shares reported 2026-03-31.
- LPL Financial LLC: 42,615 shares reported 2025-12-31; 69,575 shares reported 2026-03-31.
- BlackRock, Inc.: 2,328,470 shares reported 2025-12-31; 2,373,003 shares reported 2026-03-31.
- Opaleye Management Inc.: 900,000 shares reported 2025-12-31; 1,380,000 shares reported 2026-03-31.
93 filers have only one report here.
Unusually large insider trades
Each trade is compared with the other insider trades of the same kind in the same security among Cabaletta Bio, Inc.'s recent filings on file. Size alone is context, not a prediction or evidence of improper trading.
- 2021-09-07 · ROCKLAGE SCOTT M: Larger than all 24 other insider sales of Common Stock on file. SEC filing
- 2021-01-08 · ROCKLAGE SCOTT M: Larger than 23 of the 24 other insider sales of Common Stock on file. SEC filing
- 2020-12-10 · ROCKLAGE SCOTT M: Larger than 22 of the 24 other insider sales of Common Stock on file. SEC filing
- 2019-10-29 · ROCKLAGE SCOTT M: Larger than 15 of the 16 other insider purchases of Common Stock on file. SEC filing
- 2019-10-29 · DEERFIELD MANAGEMENT COMPANY, L.P. (SERIES C): Larger than all 16 other insider purchases of Common Stock on file. SEC filing
Independent insiders buying near the same time
- 2026-01-21–2026-01-21: 8 event(s) across 8 owner(s) — A cluster counts independent reporting owners that reported purchases within a set time. Co-filers and declared affiliates count once, and duplicate reports of the same event count once. ( filing , filing , filing , filing , filing , filing , filing , filing )
- 2022-10-18–2022-10-19: 7 event(s) across 5 owner(s) — A cluster counts independent reporting owners that reported purchases within a set time. Co-filers and declared affiliates count once, and duplicate reports of the same event count once. ( filing , filing , filing , filing , filing , filing , filing )
- 2019-10-29–2019-10-29: 2 event(s) across 2 owner(s) — A cluster counts independent reporting owners that reported purchases within a set time. Co-filers and declared affiliates count once, and duplicate reports of the same event count once. ( filing , filing )
Purchases & sales (open market or private)
| Security | Code | Price | Filing | |||
|---|---|---|---|---|---|---|
| 2026-01-21 | Simon Mark · Director | Common Stock | P — Open market or private purchase | +11,061 | 2.28 | SEC filing |
| 2026-01-21 | Binder Gwendolyn · President, Science & Tech. | Common Stock | P — Open market or private purchase | +11,312 | 2.19 | SEC filing |
| 2026-01-21 | Gavel Steve · Chief Commercial Officer | Common Stock | P — Open market or private purchase | +22,170 | 2.27 | SEC filing |
| 2026-01-21 | Bollard Catherine · Director | Common Stock | P — Open market or private purchase | +4,405 | 2.27 | SEC filing |
| 2026-01-21 | Gerard Michael · General Counsel | Common Stock | P — Open market or private purchase | +6,600 | 2.27 | SEC filing |
| 2026-01-21 | Chang David J. · Chief Medical Officer | Common Stock | P — Open market or private purchase | +8,800 | 2.26 | SEC filing |
| 2026-01-21 | Tomasello Shawn · Director | Common Stock | P — Open market or private purchase | +22,725 | 2.21 | SEC filing |
| 2026-01-21 | Nichtberger Steven · President & CEO | Common Stock | P — Open market or private purchase | +45,000 | 2.24 | SEC filing |
Showing 8 of 20 rows
Grants, exercises, tax & gifts
| Security | Code | Filing | |||
|---|---|---|---|---|---|
| 2026-06-09 | Tomasello Shawn · Director | Stock Option (Right to Buy) | A — Grant, award, or other acquisition | +22,000 | SEC filing |
| 2026-06-09 | Brun Scott C. · Director | Stock Option (Right to Buy) | A — Grant, award, or other acquisition | +22,000 | SEC filing |
| 2026-06-09 | HENRIQUES RICHARD C JR · Director | Stock Option (Right to Buy) | A — Grant, award, or other acquisition | +22,000 | SEC filing |
| 2026-06-09 | Bollard Catherine · Director | Stock Option (Right to Buy) | A — Grant, award, or other acquisition | +22,000 | SEC filing |
| 2026-06-09 | Simon Mark · Director | Stock Option (Right to Buy) | A — Grant, award, or other acquisition | +22,000 | SEC filing |
| 2026-03-02 | Gerard Michael · General Counsel | Stock Option (Right to Buy) | A — Grant, award, or other acquisition | +175,000 | SEC filing |
| 2026-03-02 | Marda Anup · Chief Financial Officer | Stock Option (Right to Buy) | A — Grant, award, or other acquisition | +225,000 | SEC filing |
| 2026-03-02 | Das Arun · Chief Business Officer | Stock Option (Right to Buy) | A — Grant, award, or other acquisition | +175,000 | SEC filing |
Showing 8 of 20 rows
Other activity
| Security | Code | Filing | |||
|---|---|---|---|---|---|
| 2025-05-19 | Marda Anup · Chief Financial Officer | Stock Option (Right to Buy) | D — Disposition to the issuer | −139,282 | SEC filing |
| 2025-05-19 | Brun Scott C. · Director | Stock Option (Right to Buy) | D — Disposition to the issuer | −22,000 | SEC filing |
| 2025-05-19 | Simon Mark · Director | Stock Option (Right to Buy) | D — Disposition to the issuer | −18,460 | SEC filing |
| 2025-05-19 | Marda Anup · Chief Financial Officer | Stock Option (Right to Buy) | D — Disposition to the issuer | −130,000 | SEC filing |
| 2025-05-19 | Marda Anup · Chief Financial Officer | Stock Option (Right to Buy) | D — Disposition to the issuer | −150,000 | SEC filing |
| 2025-05-19 | HENRIQUES RICHARD C JR · Director | Stock Option (Right to Buy) | D — Disposition to the issuer | −22,000 | SEC filing |
| 2025-05-19 | Das Arun · Chief Business Officer | Stock Option (Right to Buy) | D — Disposition to the issuer | −18,416 | SEC filing |
| 2025-05-19 | Nichtberger Steven · President & CEO | Stock Option (Right to Buy) | D — Disposition to the issuer | −380,000 | SEC filing |
Showing 8 of 10 rows
These tables describe filed transactions, not current holdings. Prices are shown as filed; a currency is added only when the filing's data names one. Amended and possible duplicate rows are left out of size comparisons and transaction groups.