---
schema_version: "secwatch.filing_event.v1"
accession: "0001193125-26-149654"
form_type: "8-K"
ticker: "FBLG"
cik: "0001958777"
company_name: "FibroBiologics, Inc."
filed_at: "2026-04-09T23:59:59+00:00"
generated_at: "2026-05-15T06:49:49.544673+00:00"
event_type: "other_material"
sentiment: "positive"
materiality_score: 0.4
calibrated_materiality_score: 0.4
confidence: "high"
source: SEC EDGAR
---

# FibroBiologics terminates sublease early, saves ~$0.8M in rent

## Summary
- Sublease for Webster, TX office terminated April 2, 2026, 18 months early; single payment of $45,108.25 resolves all rent obligations.
- Company expects to save approx. $0.8 million in future rent payments through consolidation.
- New principal executive office address is 9350 Kirby Drive, Suite 300, Houston, TX 77054, following 2025 opening of 10,000+ sq ft lab.

## SEC filing metadata
- accession: 0001193125-26-149654
- form_type: 8-K
- ticker: FBLG
- cik: 0001958777
- company_name: FibroBiologics, Inc.
- filed_at: 2026-04-09T23:59:59+00:00
- event_type: other_material
- sentiment: positive
- materiality_score: 0.4
- calibrated_materiality_score: 0.4
- confidence: high
- sec_items: 1.01, 8.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1958777/000119312526149654/0001193125-26-149654-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1958777/000119312526149654/fblg-20260403.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001193125-26-149654
- JSON: https://secwatch.observer/filing/0001193125-26-149654.json
- Plain text: https://secwatch.observer/filing/0001193125-26-149654.txt

## Key facts
- Material Agreements
  FibroBiologics, Inc. terminated Lease Termination Agreement with United Fire & Casualty Co. (doing business as United Fire Group) valued at $45,108.25 (effective 2026-04-03).
  - Action: termination
  - Agreement: lease
  - Counterparty: United Fire & Casualty Co. (doing business as United Fire Group)
  - Value: $45,108.25
  - Effective: 2026-04-03
  source text: On April 3, 2026, FibroBiologics, Inc. (the “Company”) entered into a Sublease Buyout Agreement (the “Lease Termination Agreement”) with United Fire & Casualty Co. (doing business as United Fire Group) (the “Sublandlord”) to terminate that certain Sublease Agreement, which was effective as of October 5, 2022 (“Sublease”)
  evidence_url: https://www.sec.gov/Archives/edgar/data/1958777/000119312526149654/0001193125-26-149654-index.htm

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