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 (Tables)

v3.24.1.1.u2

Common Stock (Tables)

3 Months Ended

Mar. 31, 2024

Equity [Abstract]

Summary of Stock Option Activity

A summary of stock option activity is presented below:


	Number of Shares			Weighted Average Exercise Price		Weighted Average Remaining Contractual Term (years)		Aggregate Intrinsic Value
Outstanding as of January 1, 2024		8,141,035		$	8.28		7.6	$	117,384
Granted		1,858,200			23.80
Exercised		(167,813	)		6.61				2,615
Outstanding as of March 31, 2024		9,831,422		$	11.24		7.8	$	69,765
Options Exercisable at March 31, 2024		4,457,253		$	7.63		6.5	$	42,026

Schedule of Assumptions Used to Estimate Fair Value of Stock Options

The fair value of each award is estimated using Black-Scholes based on the following assumptions:


	Three months ended March 31,
	2024	2023
Risk-free interest rate	3.78%—4.28%	3.38%—3.95%
Expected term	6.1 years	6.1 years
Expected volatility	106%	106%
Expected dividend yield	0%	0%

Summary of Stock-Based Compensation

The Company has recorded stock-based compensation in the accompanying statements of operations as follows:


	Three Months Ended March 31,
	2024		2023
Research and development	$	1,960	$	1,236
General and administrative		1,831		1,244
Total	$	3,791	$	2,480

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