SEC Form 4 · accession 0001193125-26-266232
Cabaletta Bio, Inc. · CABA
Statement of changes in beneficial ownership, as filed. Original on EDGAR ↗
Reporting owner
Mark Simon
Director
Period of report
Jun 9, 2026
Accepted (ET)
Jun 10, 2026 · 6:59 pm EDT
Rule 10b5-1 plan
box not checked
Issuer CIK
0001759138
Table I — non-derivative securities
No Table I lines on this filing.
Table II — derivative securities
| Security | Conv. / exercise price | Date | Code | Shares | A/D | Exercisable | Expires | Underlying | Underlying shares | Owned after | D/I |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Stock Option (Right to Buy)F1 | $3.22 | Jun 9, 2026 | A | 22,000 | A | — | Jun 8, 2036 | Common Stock | 22,000 | 22,000 | D |
Explanation of responses
- F1This option shall vest in full upon the earlier of (i) June 9, 2027 or (ii) the date of the next annual meeting of the Corporation's stockholders.