---
schema_version: "secwatch.filing_event.v1"
accession: "0001493152-22-033853"
form_type: "8-K"
ticker: "MARA"
cik: "0001507605"
company_name: "MARA Holdings, Inc."
filed_at: "2022-11-28T23:59:59+00:00"
generated_at: "2026-06-21T12:42:03.536338+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.45
calibrated_materiality_score: 0.45
confidence: "high"
source: SEC EDGAR
---

# Marathon Digital appoints John Lee as Chief Accounting Officer; Sim Salzman resigns

## Summary
- John Lee appointed CAO effective Nov 21, 2022; CPA with 30+ years experience.
- Sim Salzman resigned as CAO, will remain VP-Finance through April 1, 2023 for transition.
- Lee's base salary $300k, signing bonus $35k, 120k RSUs with multi-year vesting.
- Employment agreement has 3-year initial term with automatic renewal provisions.
- Salzman to pursue other interests; severance terms still under review.

## SEC filing metadata
- accession: 0001493152-22-033853
- form_type: 8-K
- ticker: MARA
- cik: 0001507605
- company_name: MARA Holdings, Inc.
- filed_at: 2022-11-28T23:59:59+00:00
- event_type: leadership
- sentiment: neutral
- materiality_score: 0.45
- calibrated_materiality_score: 0.45
- confidence: high
- sec_items: 5.02, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1507605/000149315222033853/0001493152-22-033853-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1507605/000149315222033853/form8-k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001493152-22-033853
- JSON: https://secwatch.observer/filing/0001493152-22-033853.json
- Plain text: https://secwatch.observer/filing/0001493152-22-033853.txt

## Key facts
- Executive change
  John Lee was appointed as Chief Accounting Officer at MARA Holdings, Inc..
  - Action: appointed
  - Role: Chief Accounting Officer
  source text: Effective November 21, 2022, John Lee was appointed Chief Accounting Officer of the Company.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1507605/000149315222033853/0001493152-22-033853-index.htm
- Executive change
  Sim Salzman resigned as Chief Accounting Officer at MARA Holdings, Inc..
  - Action: resigned
  - Role: Chief Accounting Officer
  source text: Also on November 21, 2022, Sim Salzman resigned as the Company’s Chief Accounting Officer.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1507605/000149315222033853/0001493152-22-033853-index.htm

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