---
schema_version: "secwatch.filing_event.v1"
accession: "0000950170-25-096231"
form_type: "8-K"
ticker: "ADTN"
cik: "0000926282"
company_name: "ADTRAN Holdings, Inc."
filed_at: "2025-07-16T23:59:59+00:00"
generated_at: "2026-05-18T06:24:44.284441+00:00"
event_type: "earnings"
sentiment: "positive"
materiality_score: 0.7
calibrated_materiality_score: 0.7
confidence: "high"
source: SEC EDGAR
---

# ADTRAN preliminary Q2 revenue $262.5M-$267.5M, above prior guidance range

## Summary
- Preliminary Q2 revenue $262.5M-$267.5M, exceeding guidance of $247.5M-$262.5M.
- CEO cites improved market conditions and growing customer demand for the overperformance.
- Full Q2 2025 results to be released Aug 4 after market close; conference call Aug 5.
- Preliminary and unaudited numbers per German ad hoc disclosure regulations.

## SEC filing metadata
- accession: 0000950170-25-096231
- form_type: 8-K
- ticker: ADTN
- cik: 0000926282
- company_name: ADTRAN Holdings, Inc.
- filed_at: 2025-07-16T23:59:59+00:00
- event_type: earnings
- sentiment: positive
- materiality_score: 0.7
- calibrated_materiality_score: 0.7
- confidence: high
- sec_items: 2.02, 7.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/926282/000095017025096231/0000950170-25-096231-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/926282/000095017025096231/adtn-20250716.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0000950170-25-096231
- JSON: https://secwatch.observer/filing/0000950170-25-096231.json
- Plain text: https://secwatch.observer/filing/0000950170-25-096231.txt

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