---
schema_version: "secwatch.filing_event.v1"
accession: "0001193125-25-137954"
form_type: "8-K"
ticker: "CABA"
cik: "0001759138"
company_name: "Cabaletta Bio, Inc."
filed_at: "2025-06-10T23:59:59+00:00"
generated_at: "2026-05-19T15:56:36.593640+00:00"
event_type: "other"
sentiment: "neutral"
materiality_score: 0.3
calibrated_materiality_score: 0.3
confidence: "high"
source: SEC EDGAR
---

# Cabaletta Bio stockholders approve doubling authorized common shares to 300M, elect directors at annual meeting

## Summary
- Authorized shares increased from 150M to 300M; approved by 32.6M for vs 2.0M against.
- Steven Nichtberger, M.D. and Mark Simon, MBA re-elected as Class III directors through 2028.
- Ernst & Young LLP ratified as independent auditor for fiscal year ending Dec 31, 2025.
- Say-on-pay approved with 52% support; stockholders selected annual frequency for future advisory votes.

## SEC filing metadata
- accession: 0001193125-25-137954
- form_type: 8-K
- ticker: CABA
- cik: 0001759138
- company_name: Cabaletta Bio, Inc.
- filed_at: 2025-06-10T23:59:59+00:00
- event_type: other
- sentiment: neutral
- materiality_score: 0.3
- calibrated_materiality_score: 0.3
- confidence: high
- sec_items: 5.03, 5.07, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1759138/000119312525137954/0001193125-25-137954-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1759138/000119312525137954/d46354d8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001193125-25-137954
- JSON: https://secwatch.observer/filing/0001193125-25-137954.json
- Plain text: https://secwatch.observer/filing/0001193125-25-137954.txt

## Key facts
- Governance Changes
  Cabaletta Bio, Inc.: Increased number of authorized shares of common stock from 150,000,000 to 300,000,000 (effective 2025-06-09).
  - Change: charter amendment
  - Effective: 2025-06-09
  source text: On June 9, 2025, the Company filed a Certificate of Amendment to the Company’s Third Amended and Restated Certificate of Incorporation (the “Certificate of Amendment”) with the Secretary of State of the State of Delaware and the Certificate of Amendment became effective on filing.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1759138/000119312525137954/0001193125-25-137954-index.htm

This AI-assisted summary is a reading aid. Review the linked SEC EDGAR filing before relying on any specific claim.