Anup Marda - 02 Mar 2026 Form 4 Insider Report for Cabaletta Bio, Inc. (CABA)

Reporting relationship: Chief Financial Officer
Issuer ticker: CABA
Reported as of: 02 Mar 2026
Net transaction value: $0
SEC form: 4
Accepted by SEC: 02 Mar 2026, 19:18:28 UTC
Prior SEC filing: 19 May 2025
Source filing: View source filing
Reporting owner signature: By: /s/ Michael Gerard, as Attorney-in-Fact

Key filing fact

Anup Marda filed Form 4 for Cabaletta Bio, Inc. (CABA) on 02 Mar 2026.

Key facts

This page summarizes Anup Marda's Form 4 filing for Cabaletta Bio, Inc. (CABA).
1 reported transaction and 1 derivative row are listed below.
Accepted by SEC: 02 Mar 2026, 19:18.

Change

Previous filing in this sequence was filed on 19 May 2025.
Current net transaction value: $0.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001790410 Primary reporting owner

Marda Anup

Relationship: Chief Financial Officer
Address: C/O CABALETTA BIO, INC., 2929 ARCH STREET, SUITE 600, PHILADELPHIA
Signature: By: /s/ Michael Gerard, as Attorney-in-Fact
Signature date: 02 Mar 2026

Reported derivative securities

Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.

CABA transaction Derivative

Stock Option (Right to Buy)

Award

Transaction value: $0
Shares: +225,000
Change %
Price: $0.000000
Shares after: 225,000
Date: 02 Mar 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 225,000
Exercise price: $3.30
Footnotes: F1

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 1 footnote

Footnote F1

25% of the shares underlying this option shall vest and become exercisable on March 1, 2027, with the remainder vesting in twelve substantially equal quarterly installments thereafter, subject to the reporting person's continued service on each such vesting date.