Michael Gerard - 01 Mar 2024 Form 4 Insider Report for Cabaletta Bio, Inc. (CABA)

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
transaction	CABA	Stock Option (Right to Buy)	Award	$0	+100,000		$0.000000	100,000	01 Mar 2024	Common Stock	100,000	$23.97	Direct	F1

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Id	Content
F1	25% of the shares underlying this option shall vest and become exercisable on March 1, 2025, with the remainder vesting in twelve substantially equal quarterly installments thereafter, subject to the reporting person's continued service on each such vesting date.