---
schema_version: "secwatch.filing_event.v1"
accession: "0001193125-25-205483"
form_type: "8-K"
ticker: "ADTN"
cik: "0000926282"
company_name: "ADTRAN Holdings, Inc."
filed_at: "2025-09-17T23:59:59+00:00"
generated_at: "2026-05-17T06:25:59.473547+00:00"
event_type: "debt"
sentiment: "neutral"
materiality_score: 0.6
calibrated_materiality_score: 0.6
confidence: "high"
source: SEC EDGAR
---

# ADTRAN prices upsized $175M 3.75% convertible notes due 2030; proceeds to repay Wells Fargo borrowings

## Summary
- Upsized from $150M to $175M; initial purchasers have option for additional $26.25M.
- Notes bear 3.75% interest, mature Sept 15, 2030; conversion price ~$11.52/share (30% premium over $8.86).
- Net proceeds ~$168.1M; ~$152.8M to repay Adtran, Inc. borrowings under Amended Wells Fargo Credit Agreement.
- Capped call transactions entered to reduce dilution; cap price ~$15.51/share (75% premium).
- Sixth Amendment to credit agreement consents to up to $230M new convertible indebtedness and modifies subline facility.

## SEC filing metadata
- accession: 0001193125-25-205483
- form_type: 8-K
- ticker: ADTN
- cik: 0000926282
- company_name: ADTRAN Holdings, Inc.
- filed_at: 2025-09-17T23:59:59+00:00
- event_type: debt
- sentiment: neutral
- materiality_score: 0.6
- calibrated_materiality_score: 0.6
- confidence: high
- sec_items: 1.01, 8.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/926282/000119312525205483/0001193125-25-205483-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/926282/000119312525205483/adtn-20250915.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001193125-25-205483
- JSON: https://secwatch.observer/filing/0001193125-25-205483.json
- Plain text: https://secwatch.observer/filing/0001193125-25-205483.txt

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