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Cabaletta Bio, Inc.

For the period ended Dec 31, 2025. Filed Mar 23, 2026.

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A company's yearly report to the SEC, with audited financial statements. It is the fullest account a company gives of its business, its finances and the risks it sees.

FY2025 · Filed Mar 23, 2026

CABA$1.50+15.4%Stored close · as of Nov 9, 2026

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Signatures

Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, as amended, the Registrant has duly caused this Form 10-K to be signed on its behalf by the undersigned, thereunto duly authorized.

Cabaletta Bio, Inc.
Date: March 23, 2026By:/s/ Steven Nichtberger
Steven Nichtberger, M.D.
Chief Executive Officer and President

Pursuant to the requirements of the Securities Exchange Act of 1934, as amended, this Annual Report on Form 10-K has been signed below by the following persons on behalf of the Registrant in the capacities and on the dates indicated.

NameTitleDate
/s/ Steven NichtbergerDirector, Chief Executive Officer and PresidentMarch 23, 2026
Steven Nichtberger, M.D.(Principal Executive Officer)
/s/ Anup MardaChief Financial OfficerMarch 23, 2026
Anup Marda(Principal Financial and Accounting Officer)
/s/ Catherine BollardDirectorMarch 23, 2026
Catherine Bollard, M.D.
/s/ Scott BrunDirectorMarch 23, 2026
Scott Brun, M.D.
/s/ Richard HenriquesDirectorMarch 23, 2026
Richard Henriques
/s/ Mark SimonDirectorMarch 23, 2026
Mark Simon
/s/ Shawn TomaselloDirectorMarch 23, 2026
Shawn Tomasello
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The text of this filing, as the company filed it with the SEC, without its images or exhibits. This is not investment advice.