---
schema_version: "secwatch.filing_event.v1"
accession: "0001193125-26-311290"
form_type: "8-K"
ticker: "ADTN"
cik: "0000926282"
company_name: "ADTRAN Holdings, Inc."
filed_at: "2026-07-22T11:02:14+00:00"
generated_at: "2026-07-22T11:05:05.442051+00:00"
event_type: "earnings"
sentiment: "negative"
materiality_score: 0.85
calibrated_materiality_score: 0.85
confidence: "high"
source: SEC EDGAR
---

# ADTRAN pre-announces Q2 revenue, margin, EPS below guidance; Q3 outlook weak

## Summary
- Preliminary Q2 revenue $280-282M vs guidance $283-303M; non-GAAP op margin 3.5-4.0% vs 5.0-9.0%.
- Preliminary non-GAAP EPS $0.03-0.05 vs analyst consensus of $0.13; GAAP loss per share $(0.12)-(0.14).
- Q3 guidance: revenue $275-295M, non-GAAP op margin 1.5-5.5% — below prior expectations.
- Miss driven by a single customer project delay and elevated component/freight costs.
- Full Q2 results due Aug 3; conference call Aug 4.

## SEC filing metadata
- accession: 0001193125-26-311290
- form_type: 8-K
- ticker: ADTN
- cik: 0000926282
- company_name: ADTRAN Holdings, Inc.
- filed_at: 2026-07-22T11:02:14+00:00
- event_type: earnings
- sentiment: negative
- materiality_score: 0.85
- calibrated_materiality_score: 0.85
- confidence: high
- sec_items: 2.02, 7.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/926282/000119312526311290/0001193125-26-311290-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/926282/000119312526311290/adtn-20260721.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001193125-26-311290
- JSON: https://secwatch.observer/filing/0001193125-26-311290.json
- Plain text: https://secwatch.observer/filing/0001193125-26-311290.txt

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