---
schema_version: "secwatch.filing_event.v1"
accession: "0001193125-24-147625"
form_type: "8-K/A"
ticker: null
cik: "0001060386"
company_name: "BRANDYWINE OPERATING PARTNERSHIP, L.P."
filed_at: "2024-05-28T23:59:59+00:00"
generated_at: "2026-06-01T07:53:00.261139+00:00"
event_type: "cyber"
sentiment: "negative"
materiality_score: 0.75
calibrated_materiality_score: 0.75
confidence: "high"
source: SEC EDGAR
---

# Brandywine Realty Trust discloses cyber incident with data exfiltration; no material financial impact expected

## Summary
- Detected unauthorized third-party access on May 1, 2024; encryption and exfiltration of files including personal info.
- Incident caused disruptions to business applications including financial and operating reporting systems.
- Remediation underway: third party removed, access restored, data completeness/integrity confirmed.
- Substantial portion of direct costs expected to be reimbursed through insurance recoveries.
- Company does not believe incident is reasonably likely to materially impact financial condition or results.

## SEC filing metadata
- accession: 0001193125-24-147625
- form_type: 8-K/A
- cik: 0001060386
- company_name: BRANDYWINE OPERATING PARTNERSHIP, L.P.
- filed_at: 2024-05-28T23:59:59+00:00
- event_type: cyber
- sentiment: negative
- materiality_score: 0.75
- calibrated_materiality_score: 0.75
- confidence: high
- sec_items: 1.05
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1060386/000119312524147625/0001193125-24-147625-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/790816/000119312524147625/d774339d8ka.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001193125-24-147625
- JSON: https://secwatch.observer/filing/0001193125-24-147625.json
- Plain text: https://secwatch.observer/filing/0001193125-24-147625.txt

## Key facts
- Cybersecurity Incidents
  BRANDYWINE OPERATING PARTNERSHIP, L.P. disclosed a cybersecurity incident: Unauthorized third-party access and encryption of IT systems, exfiltration of files containing personal information. Impact: Disruptions to business applications and operations, but real estate operations continued materially; no material impact on financial condition or results of operations identified. Company determined it not material. Discovered 2024-05-01.
  - Nature: Unauthorized third-party access and encryption of IT systems, exfiltration of files containing personal information
  - Impact: Disruptions to business applications and operations, but real estate operations continued materially; no material impact on financial condition or results of operations identified
  - Materiality: not material
  - Discovery: 2024-05-01
  source text: the cybersecurity incident has not had a material impact on the Company’s financial condition or results of operations, and the Company does not believe the cybersecurity incident is reasonably likely to materially impact the Company’s financial condition or results of operations
  evidence_url: https://www.sec.gov/Archives/edgar/data/1060386/000119312524147625/0001193125-24-147625-index.htm

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