---
schema_version: "secwatch.filing_event.v1"
accession: "0001193125-23-257289"
form_type: "8-K"
ticker: "ADTN"
cik: "0000926282"
company_name: "ADTRAN Holdings, Inc."
filed_at: "2023-10-17T23:59:59+00:00"
generated_at: "2026-06-09T23:01:59.028571+00:00"
event_type: "earnings"
sentiment: "negative"
materiality_score: 0.65
calibrated_materiality_score: 0.65
confidence: "high"
source: SEC EDGAR
---

# ADTRAN Q3 rev $272.3M misses $275-305M guidance; GAAP op margin -30.2%

## Summary
- Preliminary Q3 revenue $272.3M, below guidance range $275-305M, primarily due to stronger USD.
- GAAP operating margin -30.2%, impacted by one-time adjustments; non-GAAP op margin -1.9% (within -5% to 0% guidance).
- Customer count grew but customers expected to manage inventory conservatively and cut capex in Q4.
- Final Q3 results to be released on Nov 6/7, 2023.

## SEC filing metadata
- accession: 0001193125-23-257289
- form_type: 8-K
- ticker: ADTN
- cik: 0000926282
- company_name: ADTRAN Holdings, Inc.
- filed_at: 2023-10-17T23:59:59+00:00
- event_type: earnings
- sentiment: negative
- materiality_score: 0.65
- calibrated_materiality_score: 0.65
- confidence: high
- sec_items: 2.02, 7.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/926282/000119312523257289/0001193125-23-257289-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/926282/000119312523257289/d163912d8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001193125-23-257289
- JSON: https://secwatch.observer/filing/0001193125-23-257289.json
- Plain text: https://secwatch.observer/filing/0001193125-23-257289.txt

## Key facts
- Earnings Releases
  ADTRAN Holdings, Inc. reported fiscal quarter ended September 30, 2023 results: revenue $272.3 million.
  - Period: fiscal quarter ended September 30, 2023
  - Revenue: $272.3 million
  - Result: preliminary results
  source text: quarter ended September 30, 2023. All results in this release are approximate due to the preliminary nature of the announcement. For the third quarter, preliminary revenue was $272.3 million as compared to the Company’s prior guidance range of $275 million to $305 million. The resulting preliminary GAAP operating margin for the third quarter was -30.2%, and it was
  evidence_url: https://www.sec.gov/Archives/edgar/data/926282/000119312523257289/0001193125-23-257289-index.htm

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