Gwendolyn Binder - Oct 19, 2023 Form 4 Insider Report for Cabaletta Bio, Inc. (CABA)

Role
President, Science & Technology
Signature
By: /s/ Michael Gerard, as Attorney-in-Fact
Stock symbol
CABA
Transactions as of
Oct 19, 2023
Transactions value $
-$135,811
Form type
4
Date filed
10/19/2023, 07:40 PM
Previous filing
Sep 20, 2023
Next filing
Nov 21, 2023

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction CABA Common Stock Options Exercise $11.1K +11K +55% $1.01* 31K Oct 19, 2023 Direct F1
transaction CABA Common Stock Sale -$141K -10.6K -34.17% $13.32 20.4K Oct 19, 2023 Direct F1, F2
transaction CABA Common Stock Sale -$5.82K -408 -2% $14.28 20K Oct 19, 2023 Direct F1, F3

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) Options Exercise $0 -11K -7.6% $0.00 134K Oct 19, 2023 Common Stock 11K $1.01 Direct F1, F4
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 These transactions were effected pursuant to a Rule 10b5-1 trading plan dated January 20, 2023 adopted by the Reporting Person.
F2 The price reported in column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $13.01 - $13.59. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.
F3 The price reported in column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $14.15 - $14.54. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.
F4 This option vests over four years, with 25% vested on October 11, 2019, and the remaining shares vesting in 12 equal quarterly installments thereafter.

Remarks:

President, Science & Technology