---
schema_version: "secwatch.filing_event.v1"
accession: "0001193125-22-195093"
form_type: "8-K"
ticker: "ADTN"
cik: "0000926282"
company_name: "ADTRAN Holdings, Inc."
filed_at: "2022-07-15T23:59:59+00:00"
generated_at: "2026-06-24T14:40:32.733658+00:00"
event_type: "m_and_a"
sentiment: "neutral"
materiality_score: 0.8
calibrated_materiality_score: 0.8
confidence: "high"
source: SEC EDGAR
---

# ADTRAN completes ADVA exchange offer, acquires 65.43%; board and CEO compensation updated

## Summary
- ADTRAN Holdings completed exchange offer for ADVA on July 15, 2022; owns 33,957,538 shares (65.43%).
- CEO Thomas Stanton's base salary increased to $1M upon closing; granted $4M RSUs and slated $2M PSUs for 2022.
- Brian Protiva appointed Vice Chairman; Nikos Theodosopoulos and Johanna Hey join board as independent directors.
- Board committees reconstituted effective August 15, 2022; Protiva's family EGORA owns 7.8% of ADTN.
- ADTN now listed on Frankfurt Stock Exchange (Prime Standard) under symbol QH9.

## SEC filing metadata
- accession: 0001193125-22-195093
- form_type: 8-K
- ticker: ADTN
- cik: 0000926282
- company_name: ADTRAN Holdings, Inc.
- filed_at: 2022-07-15T23:59:59+00:00
- event_type: m_and_a
- sentiment: neutral
- materiality_score: 0.8
- calibrated_materiality_score: 0.8
- confidence: high
- sec_items: 2.01, 5.02, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/926282/000119312522195093/0001193125-22-195093-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/926282/000119312522195093/d287762d8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001193125-22-195093
- JSON: https://secwatch.observer/filing/0001193125-22-195093.json
- Plain text: https://secwatch.observer/filing/0001193125-22-195093.txt

## Key facts
- Executive change
  Nikos Theodosopoulos was appointed as Director at ADTRAN Holdings, Inc..
  - Action: appointed
  - Role: Director
  source text: Brian Protiva, Nikos Theodosopoulos and Johanna Hey were appointed to the Board of Directors of the Company (“Board”), effective as of the Exchange Offer Settlement Date.
  evidence_url: https://www.sec.gov/Archives/edgar/data/926282/000119312522195093/0001193125-22-195093-index.htm
- Executive change
  Brian Protiva was appointed as Vice Chairman at ADTRAN Holdings, Inc..
  - Action: appointed
  - Role: Vice Chairman
  source text: Upon his appointment to the Board, Brian Protiva was also appointed as Vice Chairman.
  evidence_url: https://www.sec.gov/Archives/edgar/data/926282/000119312522195093/0001193125-22-195093-index.htm
- Executive change
  Johanna Hey was appointed as Director at ADTRAN Holdings, Inc..
  - Action: appointed
  - Role: Director
  source text: Brian Protiva, Nikos Theodosopoulos and Johanna Hey were appointed to the Board of Directors of the Company (“Board”), effective as of the Exchange Offer Settlement Date.
  evidence_url: https://www.sec.gov/Archives/edgar/data/926282/000119312522195093/0001193125-22-195093-index.htm

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