Highest-materiality recent filing
Grayscale Ethereum Classic Trust discloses use of cashtags and third-party content on X
Filing warns that cashtags on X link to third-party market data not authorized by Grayscale.
On Oct 22, 2025, GSOIH transferred GSO membership units to Grayscale Investments, which became sole managing member of GSO and thus sponsor GSIS.
Grayscale Ethereum Classic Trust's sponsor board changes: Kummell out, Koster in
Matthew Kummell stepped down as a Director of GSO Intermediate Holdings Corp., the top entity in sponsor's governance chain.
Grayscale Ethereum Classic Trust adds Crypto.com to index constituent trading platforms
CoinDesk Indices added Crypto.com to the Ether Classic Price Index effective Sept 21, 2025.
Grayscale expands management team and Barry Silbert returns as Board Chairman
Barry Silbert appointed Chairman of Grayscale Board, replacing Mark Shifke who remains Director.
Grayscale Ethereum Classic Trust sponsor appoints Diana Zhang as COO, succeeding Hugh Ross
Diana Zhang named COO of Grayscale Investments, effective May 6, 2025; reports to CEO Peter Mintzberg.
Grayscale Ethereum Classic Trust sponsor reorganized; GSIS becomes sole sponsor after 120 days
GSI merged into GSO on Jan 1, 2025; GSO succeeded to all sponsor rights and obligations.
Grayscale Ethereum Classic Trust index adds Bitfinex, removes Crypto.com effective July 28
CoinDesk Ether Classic Price Index (ECX) now includes Coinbase, Kraken, and Bitfinex.
Grayscale CEO Michael Sonnenshein steps down; Peter Mintzberg appointed effective Aug 15, 2024
Michael Sonnenshein steps down immediately as CEO of Grayscale and principal executive officer of Grayscale Ethereum Classic Trust.
Grayscale Ethereum Classic Trust amends Business Day definition in trust agreement
Amendment No. 4 changes Business Day from days banks closed to days national securities exchanges closed in New York.
Grayscale Ethereum Classic Trust dismisses Marcum, appoints KPMG as auditor
Marcum LLP dismissed as auditor effective March 1, 2024; completed 2023 audit.
Grayscale Ethereum Classic Trust sponsor board changes: Silbert, Murphy resign; Shifke Chairman
Barry E. Silbert and Mark Murphy resign from Sponsor board effective Jan. 1, 2024.
Ms. Zhang will succeed Hugh Ross, the current Chief Operating Officer of Grayscale Operating, LLC, who has decided to step down from his position and is expected to remain with Grayscale to assist with the transition of his responsibilities until his departure on or prior to May 31, 2025.
announced that GSO Intermediate Holdings Corporation, the sole managing member of Grayscale Operating, LLC, the sole member of Grayscale Investments Sponsors, LLC, has approved the appointment of Diana Zhang to serve as the new Chief Operating Officer of Grayscale Operating, LLC, effective May 6, 2025.
Michael Sonnenshein, the current Chief Executive Officer of Grayscale and the principal executive officer of the Company, who has decided to step down from his position, effective immediately.
the appointment of Peter Mintzberg to serve as Grayscale’s new Chief Executive Officer and the principal executive officer of the Company, and a member of the Board of Directors of Grayscale, effective August 15, 2024.
Mr. Edward McGee, the Chief Financial Officer of Grayscale and principal financial officer of the Company, will serve as principal executive officer on an interim basis until Mr. Mintzberg’s commencement date.
Max materiality 0.65 · Median 0.28 · Most common event other_material