secwatch.observer — SEC 8-K summary
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Issuer:     Riot Platforms, Inc. (RIOT)
CIK:        0001167419
Form:       8-K
Filed at:   2023-05-22T23:59:59+00:00
Accession:  0001558370-23-010315
Event type: other_material
Sentiment:  neutral
Materiality: 0.65
Item codes: 4.01, 9.01
LLM model:  deepseek-v4-flash:cloud@v2

Riot Platforms dismisses auditor Marcum, engages Deloitte; cites material weaknesses in internal controls
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- Effective May 18, 2023, Riot dismissed Marcum LLP and engaged Deloitte & Touche as its new independent auditor.
- Marcum's reports for FY2021 and FY2022 included adverse opinions on internal control over financial reporting due to material weaknesses.
- FY2021 material weaknesses: IT user access controls, change management, third-party data for mining revenue and Bitcoin valuation, intangible asset valuation.
- FY2022 material weakness: controls over review of Bitcoin for potential impairment.
- No disagreements with Marcum on accounting principles or practices; dismissal approved by Audit Committee.

Source:
  EDGAR index:    https://www.sec.gov/Archives/edgar/data/1167419/000155837023010315/0001558370-23-010315-index.htm
  Primary doc:    https://www.sec.gov/Archives/edgar/data/1167419/000155837023010315/riot-20230518x8k.htm
  HTML page:      https://secwatch.observer/filing/0001558370-23-010315

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