---
schema_version: "secwatch.filing_event.v1"
accession: "0001193125-25-230150"
form_type: "8-K"
ticker: null
cik: "0001060386"
company_name: "BRANDYWINE OPERATING PARTNERSHIP, L.P."
filed_at: "2025-10-03T23:59:59+00:00"
generated_at: "2026-05-17T04:41:41.113230+00:00"
event_type: "debt"
sentiment: "neutral"
materiality_score: 0.6
calibrated_materiality_score: 0.6
confidence: "high"
source: SEC EDGAR
---

# Brandywine closes $300M offering of 6.125% guaranteed notes due 2031

## Summary
- Offering of $300M aggregate principal amount of 6.125% guaranteed notes due 2031 completed on October 3, 2025.
- Net proceeds approximately $296.3M after underwriting discount and estimated expenses.
- Proceeds to repay consolidated secured debt and for general corporate purposes, including debt retirement.
- Notes are unsecured obligations of the Operating Partnership, guaranteed by Brandywine Realty Trust.
- Interest payable semi-annually on Jan 15 and Jul 15, beginning Jan 15, 2026; notes mature Oct 15, 2031.

## SEC filing metadata
- accession: 0001193125-25-230150
- form_type: 8-K
- cik: 0001060386
- company_name: BRANDYWINE OPERATING PARTNERSHIP, L.P.
- filed_at: 2025-10-03T23:59:59+00:00
- event_type: debt
- sentiment: neutral
- materiality_score: 0.6
- calibrated_materiality_score: 0.6
- confidence: high
- sec_items: 1.01, 2.03, 8.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1060386/000119312525230150/0001193125-25-230150-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/790816/000119312525230150/d38319d8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001193125-25-230150
- JSON: https://secwatch.observer/filing/0001193125-25-230150.json
- Plain text: https://secwatch.observer/filing/0001193125-25-230150.txt

## Key facts
- Debt Financings
  BRANDYWINE OPERATING PARTNERSHIP, L.P. incurred senior notes of $300 million in aggregate principal amount with The Bank of New York Mellon at 6.125% per year maturing due 2031.
  - Instrument: senior notes
  - Principal: $300 million in aggregate principal amount
  - Counterparty: The Bank of New York Mellon
  - Rate: 6.125% per year
  - Maturity: due 2031
  - Event: incurrence
  source text: On October 3, 2025, Brandywine Operating Partnership, L.P., a Delaware limited partnership (the “Operating Partnership”), completed its offering and sale (the “Notes Offering”) of $300 million in aggregate principal amount of its 6.125% Guaranteed Notes due 2031 (the “Notes”).
  evidence_url: https://www.sec.gov/Archives/edgar/data/1060386/000119312525230150/0001193125-25-230150-index.htm

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