---
schema_version: "secwatch.filing_event.v1"
accession: "0000950170-25-028352"
form_type: "8-K"
ticker: "ADTN"
cik: "0000926282"
company_name: "ADTRAN Holdings, Inc."
filed_at: "2025-02-27T23:59:59+00:00"
generated_at: "2026-05-26T02:58:46.328308+00:00"
event_type: "earnings"
sentiment: "positive"
materiality_score: 0.6
calibrated_materiality_score: 0.6
confidence: "high"
source: SEC EDGAR
---

# ADTRAN Q4 revenue $242.9M (+7% seq); GAAP EPS -$0.58, non-GAAP EPS $0.00

## Summary
- Q4 2024 revenue $242.9M, above mid-point of outlook; GAAP gross margin 37.6%, non-GAAP 42.0%.
- GAAP diluted loss per share $0.58; non-GAAP diluted EPS $0.00.
- Q1 2025 revenue guidance $237.5M-$252.5M; non-GAAP operating margin 0%-4%.
- CEO cites improving market conditions, higher service provider spending, lower customer inventories.
- Company expects higher Q1 2025 revenue despite typical seasonality.

## SEC filing metadata
- accession: 0000950170-25-028352
- form_type: 8-K
- ticker: ADTN
- cik: 0000926282
- company_name: ADTRAN Holdings, Inc.
- filed_at: 2025-02-27T23:59:59+00:00
- event_type: earnings
- sentiment: positive
- materiality_score: 0.6
- calibrated_materiality_score: 0.6
- confidence: high
- sec_items: 2.02, 7.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/926282/000095017025028352/0000950170-25-028352-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/926282/000095017025028352/adtn-20250226.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0000950170-25-028352
- JSON: https://secwatch.observer/filing/0000950170-25-028352.json
- Plain text: https://secwatch.observer/filing/0000950170-25-028352.txt

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