---
schema_version: "secwatch.filing_event.v1"
accession: "0000860413-25-000122"
form_type: "8-K"
ticker: "FIBK"
cik: "0000860413"
company_name: "FIRST INTERSTATE BANCSYSTEM INC"
filed_at: "2025-08-18T23:59:59+00:00"
generated_at: "2026-05-17T12:14:22.171072+00:00"
event_type: "debt"
sentiment: "neutral"
materiality_score: 0.4
calibrated_materiality_score: 0.4
confidence: "high"
source: SEC EDGAR
---

# First Interstate BancSystem redeems all outstanding 5.25% subordinated notes due 2030

## Summary
- Redeemed all outstanding $5.25% Fixed-to-Floating Rate Subordinated Notes due 2030 on Aug 15, 2025 at 100% par plus accrued interest.
- Company deposited sufficient funds with trustee to satisfy and discharge obligations under the notes and related First Supplemental Indenture.
- Holders were notified of redemption election on July 3, 2025.
- Remaining subordinated debt: $125M principal of 7.625% notes due 2035 under separate indenture.

## SEC filing metadata
- accession: 0000860413-25-000122
- form_type: 8-K
- ticker: FIBK
- cik: 0000860413
- company_name: FIRST INTERSTATE BANCSYSTEM INC
- filed_at: 2025-08-18T23:59:59+00:00
- event_type: debt
- sentiment: neutral
- materiality_score: 0.4
- calibrated_materiality_score: 0.4
- confidence: high
- sec_items: 1.02, 8.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/860413/000086041325000122/0000860413-25-000122-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/860413/000086041325000122/fibk-20250815.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0000860413-25-000122
- JSON: https://secwatch.observer/filing/0000860413-25-000122.json
- Plain text: https://secwatch.observer/filing/0000860413-25-000122.txt

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