---
schema_version: "secwatch.filing_event.v1"
accession: "0001493152-22-009175"
form_type: "8-K"
ticker: "MARA"
cik: "0001507605"
company_name: "MARA Holdings, Inc."
filed_at: "2022-04-05T23:59:59+00:00"
generated_at: "2026-06-26T09:24:56.764829+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.6
calibrated_materiality_score: 0.6
confidence: "high"
source: SEC EDGAR
---

# Marathon Digital appoints Hugh Gallagher as CFO, Douglas Mellinger as director

## Summary
- Hugh Gallagher appointed CFO effective March 31, 2022; Sim Salzman appointed Chief Accounting Officer.
- Douglas Mellinger appointed to board to fill vacancy from Merrick Okamoto's departure at end of 2021.
- Gallagher's employment agreement: 3-year term, $475,000 base salary, 150,000 RSUs with 3-year vesting.
- Gallagher's RSUs vest 33.33% (50,000) on March 31, 2023, then 8.33% (12,500) quarterly.
- Salzman's annual base salary increased to $275,000 under amended agreement.

## SEC filing metadata
- accession: 0001493152-22-009175
- form_type: 8-K
- ticker: MARA
- cik: 0001507605
- company_name: MARA Holdings, Inc.
- filed_at: 2022-04-05T23:59:59+00:00
- event_type: leadership
- sentiment: neutral
- materiality_score: 0.6
- calibrated_materiality_score: 0.6
- confidence: high
- sec_items: 1.01, 5.02, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1507605/000149315222009175/0001493152-22-009175-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1507605/000149315222009175/form8-k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001493152-22-009175
- JSON: https://secwatch.observer/filing/0001493152-22-009175.json
- Plain text: https://secwatch.observer/filing/0001493152-22-009175.txt

## Key facts
- Executive change
  Sim Salzman was appointed as Chief Accounting Officer at MARA Holdings, Inc..
  - Action: appointed
  - Role: Chief Accounting Officer
  source text: Effective March 31, 2022, Hugh Gallagher was appointed Chief Financial Officer of the Company, with Sim Salzman being appointed as the Company’s Chief Accounting Officer.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1507605/000149315222009175/0001493152-22-009175-index.htm
- Executive change
  Douglas Mellinger was appointed as Director at MARA Holdings, Inc..
  - Action: appointed
  - Role: Director
  source text: Effective March 31, 2022, Douglas Mellinger was appointed as a director to the Board of Directors of Marathon Digital Holdings, Inc. (the “Company”) to fill the vacancy created by Merrick Okamoto’s departure at the end of 2021.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1507605/000149315222009175/0001493152-22-009175-index.htm
- Executive change
  Hugh Gallagher was appointed as Chief Financial Officer at MARA Holdings, Inc..
  - Action: appointed
  - Role: Chief Financial Officer
  source text: Effective March 31, 2022, Hugh Gallagher was appointed Chief Financial Officer of the Company, with Sim Salzman being appointed as the Company’s Chief Accounting Officer.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1507605/000149315222009175/0001493152-22-009175-index.htm

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