---
schema_version: "secwatch.filing_event.v1"
accession: "0001193125-23-209024"
form_type: "8-K/A"
ticker: "ADTN"
cik: "0000926282"
company_name: "ADTRAN Holdings, Inc."
filed_at: "2023-08-10T23:59:59+00:00"
generated_at: "2026-06-11T21:04:03.476070+00:00"
event_type: "dividend"
sentiment: "neutral"
materiality_score: 0.1
calibrated_materiality_score: 0.1
confidence: "high"
source: SEC EDGAR
---

# ADTRAN corrects ex-dividend date to Aug 18, 2023; dividend amount unchanged

## Summary
- Ex-dividend date changed from Aug 20 to Aug 18, 2023 for Q2 cash dividend of $0.09/share.
- Record date remains Aug 21, 2023 and payment date remains Sep 5, 2023.
- Correction filed as 8-K/A; all other dividend terms unchanged from original Aug 7 disclosure.

## SEC filing metadata
- accession: 0001193125-23-209024
- form_type: 8-K/A
- ticker: ADTN
- cik: 0000926282
- company_name: ADTRAN Holdings, Inc.
- filed_at: 2023-08-10T23:59:59+00:00
- event_type: dividend
- sentiment: neutral
- materiality_score: 0.1
- calibrated_materiality_score: 0.1
- confidence: high
- sec_items: 2.02, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/926282/000119312523209024/0001193125-23-209024-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/926282/000119312523209024/d538474d8ka.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001193125-23-209024
- JSON: https://secwatch.observer/filing/0001193125-23-209024.json
- Plain text: https://secwatch.observer/filing/0001193125-23-209024.txt

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