---
schema_version: "secwatch.filing_event.v1"
accession: "0000950170-25-074589"
form_type: "8-K"
ticker: "CABA"
cik: "0001759138"
company_name: "Cabaletta Bio, Inc."
filed_at: "2025-05-19T23:59:59+00:00"
generated_at: "2026-05-21T01:54:32.062006+00:00"
event_type: "other_material"
sentiment: "neutral"
materiality_score: 0.5
calibrated_materiality_score: 0.5
confidence: "high"
source: SEC EDGAR
---

# Cabaletta Bio reprices underwater employee stock options to $1.92 per share

## Summary
- Repricing effective May 19, 2025; applies to options with exercise price >1.5x May 19 closing price.
- New exercise price set at $1.92; repriced options subject to a one-year retention period.
- Approximately 75% of employee/director/consultant stock options were underwater before repricing.
- Eligible participants include CEO Steven Nichtberger, CFO Anup Marda, and other executives/directors.

## SEC filing metadata
- accession: 0000950170-25-074589
- form_type: 8-K
- ticker: CABA
- cik: 0001759138
- company_name: Cabaletta Bio, Inc.
- filed_at: 2025-05-19T23:59:59+00:00
- event_type: other_material
- sentiment: neutral
- materiality_score: 0.5
- calibrated_materiality_score: 0.5
- confidence: high
- sec_items: 5.02
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1759138/000095017025074589/0000950170-25-074589-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1759138/000095017025074589/caba-20250515.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0000950170-25-074589
- JSON: https://secwatch.observer/filing/0000950170-25-074589.json
- Plain text: https://secwatch.observer/filing/0000950170-25-074589.txt

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