Cabaletta Bio, Inc. — Director's Dealing 2019

Oct 30, 2019

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: Cabaletta Bio, Inc. (CABA)
CIK: 0001759138
Period of Report: 2019-10-29

Reporting Person: Simon Mark (Director)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2019-10-29	Common Stock	C	18144	—	Acquired	18144	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2019-10-29	Series A-1 Preferred Stock	$	C	27217	Disposed		Common Stock (18144)	Direct

Footnotes

F1: Upon the closing of the Issuer's initial public offering, all shares of Series A-1 Preferred Stock automatically converted into shares of Common Stock of the Issuer on a one-for-1.5 basis. The Series A-1 Preferred Stock had no expiration date.