---
schema_version: "secwatch.filing_event.v1"
accession: "0001193125-25-048727"
form_type: "8-K"
ticker: "ADTN"
cik: "0000926282"
company_name: "ADTRAN Holdings, Inc."
filed_at: "2025-03-07T23:59:59+00:00"
generated_at: "2026-05-25T04:42:48.634751+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.65
calibrated_materiality_score: 0.65
confidence: "high"
source: SEC EDGAR
---

# ADTRAN Holdings appoints Timothy Santo as CFO; Ulrich Dopfer transitions to new role

## Summary
- Timothy Santo named CFO, effective March 10, 2025; annual base salary of $460,000 plus bonus and equity grants.
- Santo most recently served as CFO of Conn's Inc.; also held senior finance roles at PRA Group, GE Capital, and Grant Thornton.
- Ulrich Dopfer steps down as CFO and will serve as VP, Finance & Administration Planning and remain on Adtran Networks SE management board.
- Santo will also serve as Principal Accounting Officer and Treasurer of the company.

## SEC filing metadata
- accession: 0001193125-25-048727
- form_type: 8-K
- ticker: ADTN
- cik: 0000926282
- company_name: ADTRAN Holdings, Inc.
- filed_at: 2025-03-07T23:59:59+00:00
- event_type: leadership
- sentiment: neutral
- materiality_score: 0.65
- calibrated_materiality_score: 0.65
- confidence: high
- sec_items: 5.02, 7.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/926282/000119312525048727/0001193125-25-048727-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/926282/000119312525048727/d878735d8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001193125-25-048727
- JSON: https://secwatch.observer/filing/0001193125-25-048727.json
- Plain text: https://secwatch.observer/filing/0001193125-25-048727.txt

## Key facts
- Executive change
  Timothy Santo was appointed as Senior Vice President of Finance and Chief Financial Officer at ADTRAN Holdings, Inc..
  - Action: appointed
  - Role: Senior Vice President of Finance and Chief Financial Officer
  source text: On March 6, 2025, ADTRAN Holdings, Inc. (the “Company”) announced the appointment of Mr. Timothy Santo as Senior Vice President of Finance and Chief Financial Officer of the Company, effective as of Mr. Santo’s employment start date, which is expected to be March 10, 2025.
  evidence_url: https://www.sec.gov/Archives/edgar/data/926282/000119312525048727/0001193125-25-048727-index.htm
- Executive change
  Ulrich Dopfer changed role as Vice President, Finance & Administration Planning at ADTRAN Holdings, Inc..
  - Action: transitioned
  - Role: Vice President, Finance & Administration Planning
  source text: In connection with Mr. Santo’s appointment, on March 6, 2025, the Company and Ulrich Dopfer, Senior Vice President of Finance and Chief Financial Officer of the Company, agreed that Mr. Dopfer will no longer serve as the Company’s Chief Financial Officer, Secretary, Treasurer and principal accounting officer, effective March 10, 2025.
  evidence_url: https://www.sec.gov/Archives/edgar/data/926282/000119312525048727/0001193125-25-048727-index.htm

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