---
schema_version: "secwatch.filing_event.v1"
accession: "0000950170-22-023662"
form_type: "8-K/A"
ticker: "ADTN"
cik: "0000926282"
company_name: "ADTRAN Holdings, Inc."
filed_at: "2022-11-09T23:59:59+00:00"
generated_at: "2026-06-22T02:35:29.557618+00:00"
event_type: "other_material"
sentiment: "neutral"
materiality_score: 0.4
calibrated_materiality_score: 0.4
confidence: "high"
source: SEC EDGAR
---

# ADTRAN Holdings files 8-K/A to correct segment cost of revenue allocation for Q3 2022

## Summary
- Corrected Network Solutions segment cost of revenue: Q3 $222.6M, 9M $413.2M.
- Corrected Services & Support segment cost of revenue: Q3 $15.1M, 9M $34.2M.
- Total cost of revenue unchanged; no other financial figures affected.
- Amendment to Nov 7, 2022 earnings press release; segment-level allocation error.

## SEC filing metadata
- accession: 0000950170-22-023662
- form_type: 8-K/A
- ticker: ADTN
- cik: 0000926282
- company_name: ADTRAN Holdings, Inc.
- filed_at: 2022-11-09T23:59:59+00:00
- event_type: other_material
- sentiment: neutral
- materiality_score: 0.4
- calibrated_materiality_score: 0.4
- confidence: high
- sec_items: 2.02
- EDGAR index: https://www.sec.gov/Archives/edgar/data/926282/000095017022023662/0000950170-22-023662-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/926282/000095017022023662/adtn-20221107.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0000950170-22-023662
- JSON: https://secwatch.observer/filing/0000950170-22-023662.json
- Plain text: https://secwatch.observer/filing/0000950170-22-023662.txt

## Key facts
- Earnings Releases
  ADTRAN Holdings, Inc. reported financial results for the quarter and nine months ended September 30, 2022.
  - Period: the quarter and nine months ended September 30, 2022
  - Result: reported results
  source text: a press release issued on November 7, 2022 (the “Press Release”) that reported unaudited condensed consolidated financial results of the Company for the quarter and nine months ended September 30, 2022
  evidence_url: https://www.sec.gov/Archives/edgar/data/926282/000095017022023662/0000950170-22-023662-index.htm

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