Cabaletta Bio, Inc.

For the period ended Sep 30, 2025. Filed Nov 10, 2025.

About this filing

A company's report for each of its first three quarters. The financial statements are not audited. It shows how the business has moved since the last annual report, and what management says changed.

Sep 30, 2025 · Filed Nov 10, 2025

CABA$1.45-3.3%Stored close · as of Nov 10, 2026

Extracted filing text, with the paragraph anchors used by the comparison.

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Contents

Condensed Consolidated Statements of Stockholders’ Equity

(in thousands, except share amounts)

	Common Stock
	Shares	Amount	AdditionalPaid-in Capital	Accumulated Other Comprehensive Income (Loss)	Accumulated Deficit	TotalStockholders’ Equity
Balance—December 31, 2023	47,823,232	$—	$469,396	$39	$(233,237)	$236,198
Issuance of common stock, net of issuance costs	258,070	—	5,746	—	—	5,746
Stock-based compensation	—	—	3,791	—	—	3,791
Net unrealized losses on available-for-sale securities	—	—	—	(77)	—	(77)
Issuance of common stock in connection with exercise of stock options	167,813	—	1,109	—	—	1,109
Net loss	—	—	—	—	(25,047)	(25,047)
Balance—March 31, 2024	48,249,115	$—	$480,042	$(38)	$(258,284)	$221,720
Stock-based compensation	—	—	5,013	—	—	5,013
Issuance of common stock in connection with exercise of stock options	27,407	—	250	—	—	250
Issuance of common stock under employee stock purchase plan	14,947	—	129	—	—	129
Net unrealized gains on available-for-sale securities	—	—	—	9	—	9
Net loss	—	—	—	—	(27,602)	(27,602)
Balance—June 30, 2024	48,291,469	$—	$485,434	$(29)	$(285,886)	$199,519
Stock-based compensation	—	—	5,250	—	—	5,250
Issuance of common stock in connection with exercise ofstock options	15,475	—	71	—	—	71
Issuance of common stock upon exercise of pre-fundedwarrants	543,479	—	—	—	—	—
Net unrealized gains on available-for-sale securities	—	—	—	30	—	30
Net loss	—	—	—	—	(30,629)	(30,629)
Balance—September 30, 2024	48,850,423	$—	$490,755	$1	$(316,515)	$174,241

Condensed Consolidated Statements of Stockholders’ Equity

(in thousands, except share amounts)

	Common Stock
	Shares	Amount	AdditionalPaid-in Capital	Accumulated Other Comprehensive Income	Accumulated Deficit	TotalStockholders’ Equity
Balance—December 31, 2024	50,743,101	$1	$501,435	$—	$(349,101)	$152,335
Stock-based compensation	—	—	5,161	—	—	5,161
Net loss	—	—	—	—	(35,943)	(35,943)
Balance—March 31, 2025	50,743,101	$1	$506,596	$—	$(385,044)	$121,553
Issuance of common stock, warrants and pre-funded warrants, net of issuance costs of $6,442	39,200,000	—	93,558	—	—	93,558
Issuance of common stock from ATM offering, net of sales agent commission and fees	1,384,865	—	2,595	—	—	2,595
Issuance of common stock under employee stock purchase plan	123,933	—	197	—	—	197
Stock-based compensation	—	—	5,705	—	—	5,705
Net unrealized gains on available-for-sale securities	—	—	—	1	—	1
Net loss	—	—	—	—	(45,128)	(45,128)
Balance—June 30, 2025	91,451,899	$1	$608,651	$1	$(430,172)	$178,481
Stock-based compensation	—	—	5,815	—	—	5,815
Issuance of common stock in connection with exercise of stock options	13,334	—	14	—	—	14
Issuance of common stock upon exercise of pre-funded warrants	4,799,971	—	—	—	—	—
Net unrealized gains on available-for-sale securities	—	—	—	22	—	22
Net loss	—	—	—	—	(44,866)	(44,866)
Balance—September 30, 2025	96,265,204	$1	$614,480	$23	$(475,038)	$139,466

ContentsView on SEC.gov

The text of this filing, as the company filed it with the SEC, without its images or exhibits. This is not investment advice.