---
schema_version: "secwatch.filing_event.v1"
accession: "0001416265-25-000038"
form_type: "8-K"
ticker: null
cik: "0001416265"
company_name: "PROSPER MARKETPLACE, INC"
filed_at: "2025-09-17T23:59:59+00:00"
generated_at: "2026-05-17T06:20:45.262924+00:00"
event_type: "cyber"
sentiment: "negative"
materiality_score: 0.6
calibrated_materiality_score: 0.6
confidence: "high"
source: SEC EDGAR
---

# Prosper Marketplace reports cyber breach; SSNs obtained; investigation ongoing

## Summary
- Unauthorized third party gained access to systems containing proprietary info on Sept 1, 2025.
- No evidence of unauthorized access to customer accounts or funds; customer operations uninterrupted.
- Company confirms SSNs and other personal info obtained via unauthorized database queries.
- Full scope, impact, and number of compromised records not yet determined; regulatory notifications ongoing.
- Incident not yet deemed materially impactful, but risks to insurance costs and financial condition remain.

## SEC filing metadata
- accession: 0001416265-25-000038
- form_type: 8-K
- cik: 0001416265
- company_name: PROSPER MARKETPLACE, INC
- filed_at: 2025-09-17T23:59:59+00:00
- event_type: cyber
- sentiment: negative
- materiality_score: 0.6
- calibrated_materiality_score: 0.6
- confidence: high
- sec_items: 8.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1416265/000141626525000038/0001416265-25-000038-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1416265/000141626525000038/prosper-20250901.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001416265-25-000038
- JSON: https://secwatch.observer/filing/0001416265-25-000038.json
- Plain text: https://secwatch.observer/filing/0001416265-25-000038.txt

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