1. Organization

Grayscale Ethereum Trust ETF (the “Trust”) is a Delaware Statutory Trust that was formed on December 13, 2017 and commenced operations on December 14, 2017. In general, the Trust holds Ethereum tokens (“Ether”) and, from time to time, issues common units of fractional undivided beneficial interest (“Shares”) in exchange for Ether. Prior to July 23, 2024, the Trust did not operate a redemption program. On May 23, 2024, the Securities and Exchange Commission (the “SEC”) approved an application under Rule 19b-4 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”) by NYSE Arca, Inc. (“NYSE Arca”) to list the Shares of the Trust, which began trading on NYSE Arca on July 23, 2024 (the “Uplisting Date”), following the effectiveness of the Trust’s registration statement on Form S-3, as amended (File No. 333-278880). As of the date of this Quarterly Report, the Trust is an SEC reporting company with its Shares registered pursuant to Section 12(b) of the Exchange Act. On July 22, 2024, in connection with the approval of the 19b-4 Application on May 23, 2024 and the effectiveness of the registration statement on Form S-3, as amended, Grayscale Investments, LLC (“GSI”) authorized the commencement of a redemption program. Effective July 23, 2024, the Trust creates and redeems Shares at such times and for such periods as determined by the Sponsor (as defined below), but only in one or more whole “Baskets.” A Basket equals 10,000 Shares. The creation of a Basket requires the delivery to the Trust of the amount of Ether (or cash to acquire such amount of Ether) represented by one Share immediately prior to such creation multiplied by 10,000. The redemption of a Basket requires distribution by the Trust of the amount of Ether represented by one Share immediately prior to such redemption multiplied by 10,000. The Trust may from time to time halt creations and redemptions for a variety of reasons, including in connection with forks, airdrops and other similar occurrences.

The Trust’s investment objective is for the value of the Shares (based on Ether per Share) to reflect the value of the Ether held by the Trust, less the Trust’s expenses and other liabilities.

GSI was the sponsor of the Trust before January 1, 2025, Grayscale Operating, LLC (“GSO”), was the co-sponsor of the Trust from January 1, 2025 to May 3, 2025, and Grayscale Investments Sponsors, LLC (“GSIS”, or the “Sponsor”), was the co-sponsor of the Trust from January 1, 2025 to May 3, 2025 and is the sole remaining sponsor thereafter. GSI was, and each of GSO and GSIS are, a consolidated subsidiary of Digital Currency Group, Inc. (“DCG”). The Sponsor is responsible for the day-to-day administration of the Trust pursuant to the provisions of the Trust Agreement. The Sponsor is responsible for preparing and providing annual and quarterly reports on behalf of the Trust to investors and is also responsible for selecting and monitoring the Trust’s service providers. As partial consideration for the Sponsor’s services, the Trust pays the Sponsor a Sponsor’s Fee as discussed in Note 7. The Sponsor also acts as the sponsor and manager of other single-asset and diversified investment products, each of which is an affiliate of the Trust. Information related to the affiliated investment products can be found on the Sponsor’s website at www.grayscale.com/resources/regulatory-filings. Any information contained on or linked from such website is not part of nor incorporated by reference into these unaudited financial statements. Several of the affiliated investment products are SEC reporting companies with their shares registered pursuant to Section 12(g) of the Exchange Act. In addition, the following affiliated investment products are also SEC reporting companies with their shares registered pursuant to Section 12(b) of the Exchange Act: Grayscale Bitcoin Trust ETF, Grayscale Ethereum Mini Trust ETF, Grayscale Bitcoin Mini Trust ETF, Grayscale CoinDesk Crypto 5 ETF and, as of October 29, 2025, Grayscale Solana Trust ETF.

Authorized Participants of the Trust are the only entities who may place orders to create or redeem Baskets. Grayscale Securities, LLC (“Grayscale Securities” or, in such capacity, an “Authorized Participant”), a registered broker-dealer and affiliate of the Sponsor, was the only Authorized Participant from October 3, 2022 through July 21, 2024. On or after July 22, 2024, the Sponsor, on behalf of the Trust, and the Transfer Agent entered into Participant Agreements with a number of unaffiliated Authorized Participants in connection with the approval of NYSE Arca’s application under Rule 19b-4 of the Exchange Act, and the Trust has also since engaged other Authorized Participants. In connection with the entry into the Participant Agreements, as of July 22, 2024, the Sponsor amended, solely, with respect to the Trust, the Participant Agreement, dated as of October 3, 2022, between the Sponsor and Grayscale Securities, to remove the Trust as an entity covered by the Agreement. Effective July 22, 2024, Grayscale Securities no longer serves as Authorized Participant of the Trust. Additional Authorized Participants may be added at any time, subject to the discretion of the Sponsor.

Liquidity Providers facilitate the purchase and sale of Ether in connection with cash orders for creations or redemptions of Baskets. The Liquidity Providers with which GSIS, acting in its capacity as the “Liquidity Engager,” will engage in Ether transactions are third parties that are not affiliated with the Sponsor or the Trust and are not acting as agents of the Trust, the Sponsor, or any Authorized Participant, and all transactions will be done on an arm’s-length basis. Except for the contractual relationships between each Liquidity Provider and GSIS in its capacity as the Liquidity Engager, there is no contractual relationship between each Liquidity Provider and the Trust, the Sponsor, or any Authorized Participant. The Liquidity Engager may engage additional Liquidity Providers who are unaffiliated with the Trust in the future.

Effective July 23, 2024, the Trust, the Sponsor and Coinbase, Inc., the prime broker of the Trust (“Coinbase” or the “Prime Broker”), on behalf of itself and as agent for Coinbase Custody Trust Company, LLC (“Coinbase Custody” or the “Custodian”) and Coinbase Credit, Inc. (“Coinbase Credit” and, collectively with Coinbase and Coinbase Custody, the “Coinbase Entities”), entered into the Coinbase Prime Broker Agreement governing the Trust’s and the Sponsor’s use of the Custodial and Prime Broker Services provided

2. Summary of Significant Accounting Policies

In the opinion of management of the Sponsor of the Trust, all adjustments (which include normal recurring adjustments) necessary to present fairly the financial position as of September 30, 2025 and December 31, 2024 and results of operations for the three and nine months ended September 30, 2025 and 2024 have been made. The results of operations for the periods presented are not necessarily indicative of the results of operations expected for the full year. These unaudited financial statements should be read in conjunction with the audited financial statements for the year ended December 31, 2024 included in our Annual Report.

The following is a summary of significant accounting policies followed by the Trust:

The financial statements have been prepared in accordance with generally accepted accounting principles in the United States (“U.S. GAAP”). The Trust qualifies as an investment company for accounting purposes pursuant to the accounting and reporting guidance under Financial Accounting Standards Board (“FASB”) Accounting Standards Codification (“ASC”) Topic 946, Financial Services—Investment Companies. The Trust uses fair value as its method of accounting for Ether in accordance with its classification as an investment company for accounting purposes. The Trust is not a registered investment company under the Investment Company Act of 1940. U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts in the financial statements and accompanying notes. Actual results could differ from those estimates and these differences could be material.

The Trust conducts its transactions in Ether, including receiving Ether for the creation of Shares and delivering Ether for the redemption of Shares and for the payment of the Sponsor’s Fee. The Sponsor will determine the Trust’s net asset value (“NAV”) on each business day as of 4:00 p.m., New York time, or as soon thereafter as practicable.

3. Fair Value of Ether

Ether is held by the Custodian on behalf of the Trust and is carried at fair value. As of September 30, 2025 and December 31, 2024, the Trust held 1,063,337.97367740 and 1,417,788.29257515 Ether, respectively.

The Trust determined the fair value per Ether to be $4,161.61 and $3,340.40 on September 30, 2025 and December 31, 2024, respectively, using the price provided at 4:00 p.m., New York time, by the Digital Asset Trading Platform Market considered to be the Trust’s principal market (Crypto.com).

4. The Initial Distribution to the Grayscale Ethereum Mini Trust ETF

On July 8, 2024, the Sponsor of the Trust at the direction of its board of directors, declared a pro rata distribution on the Shares of the Trust, pursuant to which each holder of Shares as of 4:00 PM ET on July 18, 2024 (the “Record Date”) was entitled to receive shares (the “ETH Shares”) of Grayscale Ethereum Mini Trust ETF (the “ETH Trust”), a Delaware statutory trust sponsored by the Sponsor, in connection with its previously announced initial creation and distribution of ETH Shares (such transactions collectively, the “Initial Distribution”). On July 23, 2024, the Trust completed its previously announced pro rata distribution of 310,158,500 shares of the ETH Trust to shareholders of the Trust as of the Record Date and contributed to the ETH Trust an amount of Ether equal to approximately 10% of the total Ether held by the Trust as of the Record Date, equal to 292,262.98913350 Ether, with a value of $1,010,934,757, as consideration and in exchange for 310,158,500 shares of the ETH Trust at $3.26 per share.

5. Creations and Redemptions of Shares

At September 30, 2025 and December 31, 2024, there were an unlimited number of Shares authorized by the Trust. The Trust creates and redeems Shares from time to time, but only in one or more Baskets. The creation and redemption of Baskets on behalf of investors are made by the Authorized Participant in exchange for the delivery of Ether to the Trust or the distribution of Ether by the Trust. The amount of Ether required for each Creation Basket or Redemption Basket is determined by dividing (x) the amount of Ether owned by the Trust at 4:00 p.m., New York time, on such trade date of a creation or redemption order, after deducting the amount of Ether representing the U.S. dollar value of accrued but unpaid fees and expenses of the Trust, by (y) the number of Shares outstanding at such time and multiplying the quotient obtained by 10,000. Each Share represented approximately 0.0082 and 0.0084 of one Ether at September 30, 2025 and December 31, 2024, respectively. The decrease in the amount of Ether represented by each Share is primarily a result of the periodic withdrawal of Ether to pay the Sponsor’s Fee.

The cost basis of investments in Ether recorded by the Trust is the fair value of Ether, as determined by the Trust, at 4:00 p.m., New York time, on the date of transfer to the Trust by the Authorized Participant, or Liquidity Provider, based on the Creation Baskets. The cost basis recorded by the Trust may differ from proceeds collected by the Authorized Participant from the sale of each Share to investors. The Authorized Participant or Liquidity Provider may realize significant profits buying, selling, creating, and redeeming Shares as a result of changes in the value of Shares or Ether.

6. Income Taxes

The Sponsor takes the position that the Trust is properly treated as a grantor trust for U.S. federal income tax purposes. Assuming that the Trust is a grantor trust, the Trust will not be subject to U.S. federal income tax. Rather, if the Trust is a grantor trust, each beneficial owner of Shares will be treated as directly owning its pro rata Share of the Trust’s assets and a pro rata portion of the Trust’s income, gains, losses and deductions will “flow through” to each beneficial owner of Shares.

If the Trust were not properly classified as a grantor trust, the Trust might be classified as a partnership for U.S. federal income tax purposes. However, due to the uncertain treatment of digital assets, including forks, airdrops and similar occurrences for U.S. federal income tax purposes, there can be no assurance in this regard. If the Trust were classified as a partnership for U.S. federal income tax purposes, the tax consequences of owning Shares generally would not be materially different from the tax consequences described herein, although there might be certain differences, including with respect to timing. In addition, tax information reports provided to beneficial owners of Shares would be made in a different form. If the Trust were not classified as either a grantor trust or a partnership for U.S. federal income tax purposes, it would be classified as a corporation for such purposes. In that event, the Trust would be subject to entity-level U.S. federal income tax (currently at the rate of 21%) on its net taxable income and certain distributions made by the Trust to shareholders would be treated as taxable dividends to the extent of the Trust’s current and accumulated earnings and profits.

7. Related Parties

The Trust considered the following entities, their directors, and certain employees to be related parties of the Trust as of September 30, 2025: DCG, GSO, GSIS and Grayscale Securities. As of both September 30, 2025 and December 31, 2024, 5,858 Shares of the Trust were held by related parties of the Trust.

In accordance with the Trust Agreement governing the Trust, the Trust pays a fee to the Sponsor, calculated as 2.5% of the aggregate value of the Trust’s assets, less its liabilities (which include any accrued but unpaid expenses up to, but excluding, the date of calculation), as calculated and published by the Sponsor or its delegates in the manner set forth in the Trust Agreement (the “Sponsor’s Fee”). The Sponsor’s Fee accrues daily in U.S. dollars and is payable in Ether, daily in arrears. The amount of Ether payable in respect of each daily U.S. dollar accrual will be determined by reference to the same U.S. dollar value of Ether used to determine such accrual. For purposes of these financial statements, the U.S. dollar value of Ether is determined by reference to the Digital Asset Trading Platform Market that the Trust considers its principal market as of 4:00 p.m., New York time, on each valuation date. The Trust held no Incidental Rights or IR Virtual Currency as of September 30, 2025 and December 31, 2024. No Incidental Rights or IR Virtual Currencies have been distributed in payment of the Sponsor’s Fee during the three and nine months ended September 30, 2025 and 2024.

As partial consideration for receipt of the Sponsor’s Fee, the Sponsor is obligated under the Trust Agreement to assume and pay all fees and other expenses incurred by the Trust in the ordinary course of its affairs, excluding taxes, but including marketing fees; administrator fees, if any; custodian fees; transfer agent fees; trustee fees; the fees and expenses related to the listing, quotation or trading of the Shares on any secondary market (including customary legal, marketing and audit fees and expenses) in an amount up to $600,000 in any given fiscal year; ordinary course legal fees and expenses; audit fees; regulatory fees, including, if applicable, any fees relating to the registration of the Shares under the Securities Act or the Exchange Act; printing and mailing costs; the costs of maintaining the Trust’s website and applicable license fees (together, the “Sponsor-paid Expenses”), provided that any expense that qualifies as an Additional Trust Expense will be deemed to be an Additional Trust Expense and not a Sponsor-paid Expense.

The Trust may incur certain extraordinary, non-recurring expenses that are not Sponsor-paid Expenses, including, but not limited to, taxes and governmental charges, expenses and costs of any extraordinary services performed by the Sponsor (or any other service provider) on behalf of the Trust to protect the Trust or the interests of shareholders, any indemnification of the Custodian or other agents, service providers or counterparties of the Trust, the fees and expenses related to the listing, quotation or trading of the Shares on any secondary market (including legal, marketing and audit fees and expenses) to the extent exceeding $600,000 in any given fiscal year and extraordinary legal fees and expenses, including any legal fees and expenses incurred in connection with litigation, regulatory enforcement or investigation matters (collectively “Additional Trust Expenses”). In such circumstances, the Sponsor or its delegate (i) will instruct the Custodian to withdraw from the Vault Balance Ether in such quantity as may be necessary to permit payment of such Additional Trust Expenses and (ii) may either (x) cause the Trust (or its delegate) to convert such Ether into U.S. dollars or other fiat currencies at the Actual Exchange Rate or (y) when the Sponsor incurs such expenses on behalf of the Trust, cause the Trust (or its delegate) to deliver such Ether in kind to the Sponsor, in each case in such quantity as may be necessary to permit payment of such Additional Trust Expenses.

For the three months ended September 30, 2025 and 2024, the Trust incurred Sponsor’s Fees of $27,199,344 and $38,003,478, respectively. For the nine months ended September 30, 2025 and 2024, the Trust incurred Sponsor’s Fees of $64,644,000 and $152,936,135, respectively. As of September 30, 2025 and December 31, 2024, there were no accrued and unpaid Sponsor’s Fees. In addition, the Sponsor may pay Additional Trust Expenses on behalf of the Trust, which are reimbursable by the Trust to the Sponsor. For the three and nine months ended September 30, 2025 and 2024, the Sponsor did not pay any Additional Trust Expenses on behalf of the Trust.

On March 2, 2022, the board of the Sponsor approved the purchase by DCG, the indirect parent company of the Sponsor, of up to an aggregate total of $200 million worth of Shares of the Trust and shares of any of the following five investment products the Sponsor also acts as the sponsor and manager of, including Grayscale Bitcoin Trust ETF (NYSE Arca: GBTC), Grayscale Bitcoin Cash Trust (BCH) (OTCQX: BCHG), Grayscale CoinDesk Crypto 5 ETF (NYSE Arca: GDLC), Grayscale Ethereum Classic Trust (ETC)

8. Risks and Uncertainties

The Trust is subject to various risks including market risk, liquidity risk, and other risks related to its concentration in a single asset, Ether. Investing in Ether is currently highly speculative and volatile.

The Principal Market NAV of the Trust, calculated by reference to the principal market price in accordance with U.S. GAAP, relates primarily to the value of the Ether held by the Trust, and fluctuations in the price of Ether could materially and adversely affect an investment in the Shares of the Trust. The price of Ether has a limited history. During such history, Ether prices have been volatile and subject to influence by many factors, including the levels of liquidity. If Digital Asset Markets continue to experience significant price fluctuations, the Trust may experience losses. Several factors may affect the price of Ether, including, but not limited to, global Ether supply and demand, theft of Ether from global trading platforms or vaults, competition from other forms of digital currency or payment services, global or regional political, economic or financial conditions, and other unforeseen events and situations.

The Ether held by the Trust are commingled, and the Trust’s shareholders have no specific rights to any specific Ether. In the event of the insolvency of the Trust, its assets may be inadequate to satisfy a claim by its shareholders.

There is currently no clearing house for Ether, nor is there a central or major depository for the custody of Ether. There is a risk that some or all of the Trust’s Ether could be lost or stolen. There can be no assurance that the Custodian will maintain adequate insurance or that such coverage will cover losses with respect to the Trust’s Ether. Further, transactions in Ether are irrevocable. Stolen or incorrectly transferred Ether may be irretrievable. As a result, any incorrectly executed Ether transactions could adversely affect an investment in the Shares.

The SEC, at least under the prior administration, has stated that certain digital assets may be considered “securities” under the federal securities laws. The test for determining whether a particular digital asset is a “security” is complex and difficult to apply, and the outcome is difficult to predict. A number of SEC and SEC staff actions with respect to a variety of digital assets demonstrate this difficulty. For example, public though non-binding, statements by senior officials at the SEC have indicated that the SEC did not consider Bitcoin or Ether to be securities, and does not currently consider Bitcoin to be a security. In addition, the SEC appears to have implicitly taken the view that Ether is not a security (i) by not objecting to Ether futures trading on Commodity Futures Trading Commission-regulated markets under rules designed for futures on non-security commodity underliers and (ii) by approving the listing and trading of exchange-traded products (“ETPs”) that invest in Ether (i.e., approving the redemption of shares of the Trust) under the rules for commodity-based trust shares, without requiring these ETPs to be registered as investment companies. Likewise, in various courts filings and arguments the SEC has distinguished Ether from assets that it claimed were securities, and in judicial opinions, courts have accepted or even assumed that Ether is not a security. Moreover, in a recent settlement with another market participant relating to allegations that it acted as an unregistered broker-dealer for facilitating trading in certain digital assets, the SEC highlighted that the firm would cease trading in all digital assets other than Bitcoin, Bitcoin Cash and Ether—activity that, if the SEC believed Ether was presently a security—would continue to constitute unregistered brokerage activity. The SEC staff has also provided informal assurances via no-action letter to a handful of promoters that their digital assets are not securities. Moreover, the SEC’s Division of Corporation Finance has published statements that it does not consider, under certain circumstances, “meme coins” or some stablecoins to be securities. However, such statements may be withdrawn at any time without notice and comment by the Division of Corporation Finance at the SEC or the SEC itself. In addition, the SEC has brought enforcement actions against the issuers and promoters of several other digital assets on the basis that the digital assets in question are securities and has not formally or explicitly confirmed that it does not deem Ether to be a security. These developments demonstrate the difficulty in applying the federal securities laws to digital assets generally. In January 2025, the SEC launched a crypto task force dedicated to developing a comprehensive and clear regulatory framework for digital assets led by Commissioner Hester Peirce. Subsequently, Commissioner Peirce announced a list of specific priorities to further that initiative, which included pursuing final rules related to a digital asset’s security status, a revised path to registered offerings and listings for digital assets-based investment vehicles, and clarity regarding digital asset custody, lending, and staking. However, the efforts of the crypto task force have only just begun, and how or whether the SEC regulates digital asset activity in the future remains to be seen.

If Ether is determined to be a “security” under federal or state securities laws by the SEC or any other agency, or in a proceeding in a court of law or otherwise, it may have material adverse consequences for Ether. For example, it may become more difficult for Ether to be traded, cleared and custodied as compared to other digital assets that are not considered to be securities, which could, in turn, negatively affect the liquidity and general acceptance of Ether and cause users to migrate to other digital assets. As such, any

9. Financial Highlights Per Share Performance

Ratios of net investment loss and expenses to average net assets have been annualized.

An individual shareholder’s return, ratios, and per Share performance may vary from those presented above based on the timing of Share transactions. The amount shown for a Share outstanding throughout the period may not correlate with the Statement of Operations for the period due to the number of Shares issued in Creations occurring at an operational value derived from an operating metric as defined in the Trust Agreement.

Total return is calculated assuming an initial investment made at the Principal Market NAV at the beginning of the period and assuming redemption on the last day of the period.

10. Indemnifications

In the normal course of business, the Trust enters into certain contracts that provide a variety of indemnities, including contracts with the Sponsor and affiliates of the Sponsor, DCG and its officers, directors, employees, subsidiaries and affiliates, and the Custodian as well as others relating to services provided to the Trust. The Trust’s maximum exposure under these and its other indemnities is unknown. However, no liabilities have arisen under these indemnities in the past and, while there can be no assurances in this regard, there is no expectation that any will occur in the future. Therefore, the Sponsor does not consider it necessary to record a liability in this regard.

11. Subsequent Events

On October 6, 2025, the Trust began staking its Ether pursuant to staking arrangements with the Custodian and certain third party staking providers, as described in the Trust’s Current Report on Form 8-K filed October 6, 2025.

On October 22, 2025, GSO Intermediate Holdings Corporation (“GSOIH”), a Delaware corporation which was the sole managing member of GSO, a Delaware limited liability company which is the sole member of the Sponsor, consummated an internal corporate reorganization (the “Management Reorganization”). Pursuant to the Management Reorganization, GSOIH transferred a portion of its common membership units of GSO for Class A shares of Grayscale Investments, Inc. (“Grayscale Investments”), a Delaware corporation incorporated in connection with the Management Reorganization, and ceded its managing member rights in GSO to Grayscale Investments. As a result of the Management Reorganization, Grayscale Investments is now the sole managing member of GSO, the sole member of the Sponsor.

Also in connection with the Management Reorganization, on October 22, 2025, DCG Grayscale Holdco, LLC (“DCG Holdco”), the sole stockholder of Grayscale Investments, elected a board of directors (the “Board”) at Grayscale Investments. Prior to the Management Reorganization, GSOIH’s board of directors was responsible for managing and directing the affairs of the Sponsor. As a result of the Management Reorganization, the Board of Grayscale Investments is responsible for managing and directing the affairs of the Sponsor, and consists of Barry Silbert, Mark Shifke, Simon Koster, Peter Mintzberg and Edward McGee, the same members as the board of directors of GSOIH prior to the Management Reorganization. Mr. Mintzberg and Mr. McGee also retain the authority granted to them as officers of the Sponsor under the limited liability company agreement of the Sponsor. Mr. Silbert is the Chairperson of the Board of Grayscale Investments.

DCG Holdco, Grayscale Investments, GSOIH, GSO and the Sponsor are all consolidated subsidiaries of Digital Currency Group, Inc.

The Sponsor does not expect the Management Reorganization to have any material impact on the operations of the Trust.

As of the close of business on October 31, 2025, the fair value of Ether determined in accordance with the Trust’s accounting policy was $3,884.40 per Ether.

There are no known events that have occurred that require disclosure other than that which has already been disclosed in these notes to the financial statements.