Cabaletta Bio, Inc. Quarterly report pursuant to Section 13 or 15(d)

Quarterly report pursuant to Section 13 or 15(d)

Cover
- Document and Entity Information
Financial Statements
Notes to Financial Statements
Accounting Policies
- Summary of Significant Accounting Policies (Policies)
Notes Tables
Notes Details

Common Stock - Summary of Stock Option Activity (Details)

v3.23.3

Common Stock - Summary of Stock Option Activity (Details) - Employee Stock Option - 2019 Plan - USD ($) $ / shares in Units, $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2023	Dec. 31, 2022
Number of Shares
Number of Shares, Beginning Balance	6,013,384
Number of Shares, Granted	2,516,650
Number of Shares, Exercised	(273,026)
Number of shares, Forfeited/Cancelled	(58,428)
Number of Shares, Ending Balance	8,198,580	6,013,384
Number of Shares, Options Exercisable	3,795,192
Weighted Average Exercise Price
Weighted Average Exercise Price, Beginning Balance	$ 6.6
Weighted Average Exercise Price, Granted	11.18
Weighted Average Exercise Price, Exercised	3.98
Weighted Average Exercise Price, Forfeited/Cancelled	14.08
Weighted Average Exercise Price, Ending Balance	8.04	$ 6.6
Weighted Average Exercise Price, Options Exercisable	$ 7.05
Weighted Average Remaining Contractual Term (years)
Term (years)	7 years 9 months 18 days	7 years 9 months 18 days
Weighted Average Remaining Contractual Term (years), Options Exercisable	6 years 7 months 6 days
Aggregate Intrinsic Value
Aggregate Intrinsic Value, Beginning Balance	$ 22,202
Aggregate Intrinsic Value, Exercised	2,195
Aggregate Intrinsic Value, Ending Balance	58,882	$ 22,202
Aggregate Intrinsic Value, Options Exercisable	$ 31,025

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Amount of accumulated difference between fair value of underlying shares on dates of exercise and exercise price on options exercised (or share units converted) into shares.

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