Cabaletta Bio, Inc. — Director's Dealing 2019

Oct 25, 2019

SEC Form 3 — Initial Statement of Beneficial Ownership

Issuer: Cabaletta Bio, Inc. (CABA)
CIK: 0001759138
Period of Report: 2019-10-24

Reporting Person: Nichtberger Steven (Director, President & CEO)

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	726000	Direct
Common Stock	363000	Indirect

Holdings (Derivative)

Security	Exercise Price	Expiration	Underlying	Shares	Ownership
Series A-1 Preferred Stock	$		Common Stock (60483)		Direct
Stock Option (Right to Buy)	$1.01	2028-10-28	Common Stock (279677)		Direct

Footnotes

F1: The reporting person disclaims beneficial ownership of these securities, and the filing of this report is not an admission that the reporting person is the beneficial owner of these securities for purposes of Section 16 or for any other purpose.

F2: The Series A-1 Preferred Stock is convertible into shares of the Issuer's Common Stock on a one-for-1.5 basis. Upon the closing of the Issuer's initial public offering, all shares of Series A-1 Preferred Stock will convert into shares of Common Stock of the Issuer. The Series A-1 Preferred Stock has no expiration date.

F3: This option vests over four years, with 25% vesting on October 11, 2019, and the remaining shares vesting in 36 equal monthly installments thereafter.