---
schema_version: "secwatch.filing_event.v1"
accession: "0001193125-26-149865"
form_type: "8-K/A"
ticker: "FBLG"
cik: "0001958777"
company_name: "FibroBiologics, Inc."
filed_at: "2026-04-09T23:59:59+00:00"
generated_at: "2026-05-15T06:49:50.190079+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 future rent; moves HQ to Houston

## Summary
- Sublease buyout agreement with United Fire & Casualty terminates sublease effective April 2, 2026, 18 months early.
- Single exit payment of $45,108.25 resolves remaining rent obligations; original sublease ran through Nov 30, 2027.
- Expected savings of approx. $0.8 million in future rent payments.
- Consolidation follows 2025 opening of new 10,000+ sq ft lab and office facility.
- Principal executive offices relocated to 9350 Kirby Drive, Suite 300, Houston, TX 77054.

## SEC filing metadata
- accession: 0001193125-26-149865
- form_type: 8-K/A
- 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: 1.02, 1.01, 8.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1958777/000119312526149865/0001193125-26-149865-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1958777/000119312526149865/fblg-20260403.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001193125-26-149865
- JSON: https://secwatch.observer/filing/0001193125-26-149865.json
- Plain text: https://secwatch.observer/filing/0001193125-26-149865.txt

## Key facts
- Material Agreements
  FibroBiologics, Inc. terminated Sublease Buyout Agreement with United Fire & Casualty Co. valued at Single payment of $45,108.25; expected savings of approximately $0.8 million in future rent payments (effective 2026-04-03).
  - Action: termination
  - Agreement: lease
  - Counterparty: United Fire & Casualty Co.
  - Value: Single payment of $45,108.25; expected savings of approximately $0.8 million in future rent payments
  - 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”), pursuant to which Sublandlord subleased to the Company certain premises located at the third floor of 455 E. Medical Center Blvd, Webster, County of Harris, Texas 77598.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1958777/000119312526149865/0001193125-26-149865-index.htm

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