Cabaletta Bio
CABA on Nasdaq. Cabaletta Bio develops cell therapies to treat people with autoimmune diseases. Market value $353m.
Price checks use the past 12 months to June 2026. Quality checks use five annual reports, the latest for the year to December 2025.
We can't read total debt from the filing, so debt is left out.
Should I look at this?
Look carefully before going further
Why it could be worth it
Nothing stands out yet.
Read the warning sign in its own filings
This is not advice. Check the numbers below.
For every $100 of what the whole company costs, it produced $-45.03 of spare cash in the past 12 months. A savings account pays about $4.
The filings do not give us enough to work this out.
The filings do not give us enough to work this out.
Quality score: not known. Price score: 0 of 100. Our list needs 70 on quality and 60 on price.
$2.02 a share, 10% above its 1-year low
Over the past year the price has ranged from $1.83 to $4.23.
Pays no dividend
Prices from Tuesday’s close (6 October).
Five years of cash, in billions
| Revenue | |||||
| Revenue | n/a | n/a | n/a | n/a | n/a |
| Operating margin | |||||
| Operating margin | n/a | n/a | n/a | n/a | n/a |
| Debt to equity | |||||
| Debt to equity | n/a | n/a | n/a | n/a | n/a |
| Shares outstanding | |||||
| Shares outstanding | 0.03bn | 0.04bn | 0.05bn | 0.10bn | 0.17bn |
Health checks
- Free cash flow positive0 of 5 years
- Accounting looks honest (Beneish)Not enough data
- Financial strength (Piotroski)Not enough data
- Profit backed by cash (accruals)No
- DebtUnknown
- Revenue growth, five yearsUnknown
- Buying back its own sharesNo, 484% more shares since 2021
The quarter to June 2026
How the business did, compared with the same quarter a year earlier.
- A loss of $51 million, compared with a loss of $45 million a year ago.
- Over the past 12 months it spent $154 million more cash than it brought in, compared with $106 million a year earlier.
- 144% more shares than a year ago. Each share owns a bit less of the company.
| Quarter to | Amount |
|---|---|
| September 2024 | -$31m |
| December 2024 | -$33m |
| March 2025 | -$36m |
| June 2025 | -$45m |
| September 2025 | -$45m |
| December 2025 | -$42m |
| March 2026 | -$44m |
| June 2026 | -$51m |
From the company's quarterly reports to the SEC.
Dates
- Next results (estimated)
- n/a
- Last annual report (10-K)
- 23 March 2026
- Next quarterly (estimated, 10-Q)
- 12 November 2026
Who owns it
1 long-term investor we follow owns it, unchanged from 1 last quarter. 140 funds in all.
- Letko BrosseauLetko Brosseau team
- Value
- $281,377
- Share of fund
- <0.1%
| Fund | Value | Share of that fund | Change |
|---|---|---|---|
| Letko BrosseauLetko Brosseau team | $281,377 | <0.1% |
Largest holders overall
- Jennison Associates$62mAdded
- T. Rowe Price Investment Management$59mAdded
- Bain Capital Life Sciences Investors$54mAdded
- BlackRock$33mAdded
- Adage Capital Partners GP, L.L.C.$29mAdded
- State Street$24mAdded
- Vanguard Capital Management$22mAdded
- Cormorant Asset Management, LP$16mCut
- Price T Rowe Associates$14mAdded
- Woodline Partners LP$13mAdded
From 13F filings for the quarter ended 30 June 2026.
Big holders and activists
11 investors own more than 5%.
- T. Rowe Price Investment Management, Inc.Passive investor11.6%+1.4 ptsSince 30 June 2026
- PRUDENTIAL FINANCIAL INCPassive investor11.4%+2.5 ptsSince 31 May 2026
- Jennison Associates LLCPassive investor11.4%+2.5 ptsSince 29 May 2026
- Bain Capital Life Sciences Opportunities III, LPPassive investor10.0%0.0 ptsSince 30 June 2026
- Adage Capital Management, L.P.Passive investorat least 8.4%−1.6 pts(filed with 2 related holders)Since 30 June 2026
- Cormorant Asset Management, LPPassive investorat least 6.0%−3.1 pts(filed with 1 related holder)Since 30 June 2026
- BlackRock, Inc.Passive investor5.9%+4.9 ptsSince 30 June 2026
- Norges BankPassive investor5.4%Since 30 June 2026
- Vanguard Capital ManagementPassive investor5.1%Since 30 June 2026
- Alyeska Investment Group, L.P.Passive investorat least 4.7%−1.4 pts(filed with 2 related holders)Since 31 December 2025
- Kenneth GriffinPassive investorat least 3.4%−1.8 pts(filed with 6 related holders)Since 30 September 2025
- The Vanguard GroupPassive investorSold down below 5%Since 30 June 2025
- Nichtberger StevenPassive investorSold down below 5%Since 30 June 2025
- Millennium Management LLCPassive investorSold down below 5%Since 30 June 2026
| Holder | Stake | Since | |
|---|---|---|---|
T. Rowe Price Investment Management, Inc. Passive investor | 11.6%+1.4 pts | 30 June 2026 | |
PRUDENTIAL FINANCIAL INC Passive investor | 11.4%+2.5 pts | 31 May 2026 | |
Jennison Associates LLC Passive investor | 11.4%+2.5 pts | 29 May 2026 | |
Bain Capital Life Sciences Opportunities III, LP Passive investor | 10.0%0.0 pts | 30 June 2026 | |
Adage Capital Management, L.P. Passive investor | at least 8.4%−1.6 pts (filed with 2 related holders) | 30 June 2026 | |
Cormorant Asset Management, LP Passive investor | at least 6.0%−3.1 pts (filed with 1 related holder) | 30 June 2026 | |
BlackRock, Inc. Passive investor | 5.9%+4.9 pts | 30 June 2026 | |
Norges Bank Passive investor | 5.4% | 30 June 2026 | |
Vanguard Capital Management Passive investor | 5.1% | 30 June 2026 | |
Alyeska Investment Group, L.P. Passive investor | at least 4.7%−1.4 pts (filed with 2 related holders) | 31 December 2025 | |
Kenneth Griffin Passive investor | at least 3.4%−1.8 pts (filed with 6 related holders) | 30 September 2025 | |
The Vanguard Group Passive investor | Sold down below 5% | 30 June 2025 | |
Nichtberger Steven Passive investor | Sold down below 5% | 30 June 2025 | |
Millennium Management LLC Passive investor | Sold down below 5% | 30 June 2026 |
From Schedule 13D and 13G filings: anyone owning more than 5% must file one.
What insiders did
In the last 12 months, 8 insiders bought $296,210 of shares on the open market.
- Chang David J.Chief Medical OfficerBought
- Date
- 21 January 2026
- Shares
- 8,800
- Price
- $2.26
- Value
- $19,888
- Binder GwendolynPresident, Science & Tech.Bought
- Date
- 21 January 2026
- Shares
- 11,312
- Price
- $2.19
- Value
- $24,773
- Tomasello ShawnDirectorBought
- Date
- 21 January 2026
- Shares
- 22,725
- Price
- $2.21
- Value
- $50,222
- Gavel SteveChief Commercial OfficerBought
- Date
- 21 January 2026
- Shares
- 22,170
- Price
- $2.27
- Value
- $50,326
- Bollard CatherineDirectorBought
- Date
- 21 January 2026
- Shares
- 4,405
- Price
- $2.27
- Value
- $9,999
- Nichtberger StevenPresident & CEO, DirectorBought
- Date
- 21 January 2026
- Shares
- 45,000
- Price
- $2.24
- Value
- $100,800
- Simon MarkDirectorBought
- Date
- 21 January 2026
- Shares
- 11,061
- Price
- $2.28
- Value
- $25,219
- Gerard MichaelGeneral CounselBought
- Date
- 21 January 2026
- Shares
- 6,600
- Price
- $2.27
- Value
- $14,982
| Date | Who | Did | Shares | Price | Value |
|---|---|---|---|---|---|
| 21 January 2026 | Chang David J. Chief Medical Officer | Bought | 8,800 | $2.26 | $19,888 |
| 21 January 2026 | Binder Gwendolyn President, Science & Tech. | Bought | 11,312 | $2.19 | $24,773 |
| 21 January 2026 | Tomasello Shawn Director | Bought | 22,725 | $2.21 | $50,222 |
| 21 January 2026 | Gavel Steve Chief Commercial Officer | Bought | 22,170 | $2.27 | $50,326 |
| 21 January 2026 | Bollard Catherine Director | Bought | 4,405 | $2.27 | $9,999 |
| 21 January 2026 | Nichtberger Steven President & CEO, Director | Bought | 45,000 | $2.24 | $100,800 |
| 21 January 2026 | Simon Mark Director | Bought | 11,061 | $2.28 | $25,219 |
| 21 January 2026 | Gerard Michael General Counsel | Bought | 6,600 | $2.27 | $14,982 |
From Form 4 filings: insiders must report trades in their own company's shares within two days.
Warning signs in its filings
Problems the company itself reported to the SEC, in its own words.
1 serious warning sign in Cabaletta Bio’s filings.
We look for five warning signs: doubt it can keep going, weak checks on its own accounts, a notice that its past accounts can't be relied on, a change of auditor, and one customer bringing in a big share of sales. We don't check lawsuits, investigations or debt yet.
We checked the auditor's report, internal controls, restatement notices, auditor changes and big customers in the 10-K filed 23 Mar 2026, plus the 10-Q filed 13 Aug 2026 and 9 later 8-Ks.
Doubt it can keep going
SeriousThe company or its auditor warned it may not have enough money to last the next year.
“Accordingly, the Company has concluded that substantial doubt exists about the Company’s ability to continue as a going concern.”
Show the full paragraph
The Company expects that its current cash and cash equivalents may be sufficient to fund operations for at least the next twelve months from the date of issuance of these unaudited condensed consolidated financial statements; however, the Company's cash forecast contains estimates and assumptions with significant variability and management cannot predict the amount or timing of all expenditures with certainty. The Company’s ultimate success depends on the outcome of its research and development activities. Management expects to incur additional losses in the future as it continues its research and development and will need to raise additional capital to fully implement its business plan and to fund its operations. The Company intends to raise such additional capital through a combination of equity offerings, debt financings, government funding arrangements, strategic alliances or other sources. However, if such financing is not available at adequate levels and on a timely basis, or such agreements are not available on favorable terms, or at all, as and when needed, the Company will need to reevaluate its operating plan and may be required to delay or discontinue the development of one or more of its product candidates or operational initiatives. Accordingly, the Company has concluded that substantial doubt exists about the Company’s ability to continue as a going concern. The a ccompanying financial statements have been prepared on a going concern basis, which contemplates the realization of assets and satisfaction of liabilities in the ordinary course of business.
From the 10-Q filed 13 August 2026, Part I, Item 1. Financial Statements. Read it in the filing
A 10-K is the yearly report every US company files with the SEC. An 8-K is a short notice of a big event.
What could go wrong
Cheap for a reason is the question the numbers cannot answer.
Whether the price already reflects the risks is what the deep dive is for.
The deep dive
Everything above is arithmetic on public filings. The deep dive reads the last ten years of annual reports, the proxy statements, and the earnings calls, then argues the case the way Buffett, Klarman, and Hohn would, and checks every claim against the source.
- What the business is worth, as a range, and the margin of safety at today’s price
- Prices to start buying, buy, and buy hard
- The three things that would make this a mistake
- Every number footnoted to the filing it came from
Your first deep dive is free.
Not advice. Numbers on this page come from SEC filings and are updated each night; prices are updated again after the US market closes. The five-year figures are rounded.