---
schema_version: "secwatch.filing_event.v1"
accession: "0000950170-24-031864"
form_type: "8-K"
ticker: "ADTN"
cik: "0000926282"
company_name: "ADTRAN Holdings, Inc."
filed_at: "2024-03-15T23:59:59+00:00"
generated_at: "2026-06-04T18:30:14.098371+00:00"
event_type: "other_material"
sentiment: "neutral"
materiality_score: 0.4
calibrated_materiality_score: 0.4
confidence: "high"
source: SEC EDGAR
---

# ADTRAN finalizes FY2023 results with net loss of $259M; balance sheet reclassifications

## Summary
- FY2023 revenue $1.149B, net loss $259.3M ($3.41 diluted EPS); Q4 revenue $225.5M, net loss $107.0M ($1.40 EPS).
- Balance sheet adjustments: additional paid-in capital revised to $795.3M (from $774.6M); AOCI to $47.5M (from $68.2M); no income impact.
- Cash flow reclassification: accounts receivable increased $7.3M to $65.6M; proceeds from beneficial interest decreased $7.3M to $1.2M.
- Restated non-GAAP net loss and loss per share for Q1-Q3 2023 due to restated GAAP financials; other non-GAAP measures unaffected.

## SEC filing metadata
- accession: 0000950170-24-031864
- form_type: 8-K
- ticker: ADTN
- cik: 0000926282
- company_name: ADTRAN Holdings, Inc.
- filed_at: 2024-03-15T23:59:59+00:00
- event_type: other_material
- sentiment: neutral
- materiality_score: 0.4
- calibrated_materiality_score: 0.4
- confidence: high
- sec_items: 2.02, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/926282/000095017024031864/0000950170-24-031864-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/926282/000095017024031864/adtn-20240315.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0000950170-24-031864
- JSON: https://secwatch.observer/filing/0000950170-24-031864.json
- Plain text: https://secwatch.observer/filing/0000950170-24-031864.txt

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