Engagement of Marcum LLP as Independent Auditor
Company: Riot
What the later record shows
Delivered; the record does not say when
A later proxy says Marcum performed audit services for fiscal 2022. Marcum was dismissed only in May 2023. No passage dates the engagement itself.
“The Audit Committee previously retained Marcum LLP to serve as the Company’s independent public accounting firm and to perform such audit services for the years ended December 31, 2018, 2019, 2020, 2021 and 2022.”
2024-04-28 · Riot DEF 14A filed 2024-04-29 View cached copy (2026-09-13)Live source ↗
Checked October 10, 2026 against filings, releases and reporting published after the claim was made. Quotes are verbatim from the linked documents.
The claim, verbatim
Marcum LLP is engaged as the independent registered public accounting firm for the fiscal year ending December 31, 2022
Source (primary)
Riot DEF 14A filed 2022-06-17 (SEC EDGAR, sec_filing)
View cached copy (2026-09-13)Live source ↗
Quote: “the engagement of Marcum LLP as our independent registered public accounting firm for the fiscal year ending December 31, 2022”
How we checked this
Checked on October 11, 2026. The cited source supports every part of this claim.
The proxy statement states that the Audit Committee has retained and appointed Marcum LLP as the company's independent registered public accounting firm for the fiscal year ending December 31, 2022, and asks stockholders to ratify it.
Confirmed in the source:
- Marcum LLP is engaged as Riot Blockchain's independent registered public accounting firm
- The engagement covers the fiscal year ending December 31, 2022
What we did: Read our cached copy of SEC EDGAR (https://www.sec.gov/Archives/edgar/data/1167419/000114036122023379/ny20004156x5_def14a.htm) in full (236,486 characters, retrieved September 13, 2026) and checked each assertion in the claim against it.
Additional evidence
confirms Riot DEF 14A filed 2022-06-17
Quote: “the engagement of Marcum LLP as our independent registered public accounting firm for the fiscal year ending December 31, 2022”
confirms Riot DEF 14A filed 2024-04-29
Quote: “The Audit Committee previously retained Marcum LLP to serve as the Company’s independent public accounting firm and to perform such audit services for the years ended December 31, 2018, 2019, 2020, 2021 and 2022.”