---
schema_version: "secwatch.filing_event.v1"
accession: "0001193125-23-246498"
form_type: "8-K"
ticker: "ADTN"
cik: "0000926282"
company_name: "ADTRAN Holdings, Inc."
filed_at: "2023-09-29T23:59:59+00:00"
generated_at: "2026-06-10T07:19:11.996604+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.3
calibrated_materiality_score: 0.3
confidence: "high"
source: SEC EDGAR
---

# Director Johanna Hey resigns from ADTRAN Holdings board effective Sept 30, 2023

## Summary
- Johanna Hey notified the Board on Sept 25, 2023 of her resignation effective Sept 30, 2023.
- Resignation due to family and medical reasons; no disagreement with the Company or Board.
- Ms. Hey's departure reduces board size; no replacement named in the filing.

## SEC filing metadata
- accession: 0001193125-23-246498
- form_type: 8-K
- ticker: ADTN
- cik: 0000926282
- company_name: ADTRAN Holdings, Inc.
- filed_at: 2023-09-29T23:59:59+00:00
- event_type: leadership
- sentiment: neutral
- materiality_score: 0.3
- calibrated_materiality_score: 0.3
- confidence: high
- sec_items: 5.02
- EDGAR index: https://www.sec.gov/Archives/edgar/data/926282/000119312523246498/0001193125-23-246498-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/926282/000119312523246498/d479192d8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001193125-23-246498
- JSON: https://secwatch.observer/filing/0001193125-23-246498.json
- Plain text: https://secwatch.observer/filing/0001193125-23-246498.txt

## Key facts
- Executive change
  Johanna Hey resigned as Director at ADTRAN Holdings, Inc..
  - Action: resigned
  - Role: Director
  source text: On September 25, 2023, Johanna Hey notified the Board of Directors (the “Board”) of ADTRAN Holdings, Inc. (the “Company”) of her intent to resign from her role as a director of the Company, effective as of September 30, 2023, for family and medical reasons.
  evidence_url: https://www.sec.gov/Archives/edgar/data/926282/000119312523246498/0001193125-23-246498-index.htm

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