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)

v3.24.2.u1

Common Stock - Summary of Stock Option Activity (Details) - USD ($) $ / shares in Units, $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2024	Dec. 31, 2023
Number of Shares
Number of shares, Forfeited/Cancelled	(108,949)
Weighted Average Exercise Price
Weighted Average Exercise Price, Forfeited/Cancelled	$ 14.96
Employee Stock Option \| 2019 Plan
Number of Shares
Number of Shares, Beginning Balance	8,141,035
Number of Shares, Granted	2,416,800
Number of Shares, Exercised	(195,220)
Number of Shares, Ending Balance	10,253,666	8,141,035
Number of Shares, Options Exercisable	4,906,136
Weighted Average Exercise Price
Weighted Average Exercise Price, Beginning Balance	$ 8.28
Weighted Average Exercise Price, Granted	20.94
Weighted Average Exercise Price, Exercised	6.96
Weighted Average Exercise Price, Ending Balance	11.22	$ 8.28
Weighted Average Exercise Price, Options Exercisable	$ 7.75
Weighted Average Remaining Contractual Term (years)
Term (years)	7 years 8 months 12 days	7 years 7 months 6 days
Weighted Average Remaining Contractual Term (years), Options Exercisable	6 years 4 months 24 days
Aggregate Intrinsic Value
Aggregate Intrinsic Value, Beginning Balance	$ 117,384
Aggregate Intrinsic Value, Exercised	2,850
Aggregate Intrinsic Value, Ending Balance	13,427	$ 117,384
Aggregate Intrinsic Value, Options Exercisable	$ 9,795

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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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The number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan.

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