Subject to Completion Dated October 6, 2026
PROSPECTUS
Winklevoss Zcash ETF
Shares
The Winklevoss Zcash ETF (the “Trust”) is an exchange-traded product that issues shares of beneficial interest (the “Shares”) that trade on the Nasdaq Stock Market, LLC (the “Exchange”). The Trust’s purpose is to hold “ZEC”, which are digital assets that are created and transmitted through the operations of the peer-to-peer Zcash Network, a decentralized network of computers that operates on cryptographic protocols. The Trust’s investment objective is to seek to provide exposure to the price of ZEC held by the Trust, less the expenses of the Trust’s operations and other liabilities. In seeking to achieve its investment objective, the Trust will hold ZEC and establish its net asset value (“NAV”) on each business day by reference to the [ ] (the “Pricing Benchmark”). The Pricing Benchmark is calculated and published by [ ] (the “Benchmark Provider”) based on a [60-minute time-weighted average price] of the [ ] (the “Underlying Index”), which is an aggregation of executed trade flow of major ZEC trading platforms (“Constituent Platforms”). Winklevoss Asset Services, LLC (the “Sponsor”) is the sponsor of the Trust, CSC Delaware Trust Company (the “Trustee”) is the trustee of the Trust. [ ] is the transfer agent of the Trust (in such capacity, the “Transfer Agent”) and the administrator of the Trust (in such capacity, the “Administrator”). [ ], an affiliate of the Transfer Agent and Administrator, is the cash custodian of the Trust (the “Cash Custodian”). Gemini Trust Company, LLC, an affiliate of the Sponsor, is the custodian (the “Custodian”) for the Trust and will hold all of the Trust’s ZEC on the Trust’s behalf. The Trust has entered into an agreement with Cypherpunk Technologies Inc. (“Cypherpunk”) pursuant to which Cypherpunk will serve as the Trust’s “Zcash Ecosystem Partner.” Under the agreement, the Zcash Ecosystem Partner will provide certain services relating to the Zcash Network and ecosystem, which may include assistance with coinholder polling and voting, guidance in connection with protocol and technical developments, and other related advisory services concerning Zcash matters.
The Trust is an exchange-traded product. When the Trust sells or redeems its Shares, it will do so in blocks of [ ] Shares (a “Basket”) based on the quantity of ZEC attributable to each Share of the Trust (net of accrued but unpaid expenses and liabilities). For a subscription for Shares, the subscription shall be in the amount of cash needed to purchase the amount of ZEC represented by the Basket being created, as calculated by the Administrator (as defined below). For a redemption of Shares, the Sponsor shall arrange for the ZEC represented by the Basket to be sold and the cash proceeds distributed. Financial firms that are authorized to purchase or redeem Shares with the Trust (known as “Authorized Participants”) will deliver, or facilitate the delivery of, ZEC or cash to the Trust’s account with the Custodian (in the case of ZEC) or Cash Custodian (in the case of cash) in exchange for Shares when they purchase Shares, and the Trust will deliver ZEC or cash to such Authorized Participants when they redeem Shares with the Trust. Shares initially comprising the same Basket but offered by the Authorized Participant or an Authorized Participant’s designee (an “Authorized Participant Designee”) to the public at different times may have different offering prices, which depend on various factors, including the supply and demand for Shares, the value of the Trust’s assets, and market conditions at the time of a transaction. Owners of the beneficial interests of Shares (“Shareholders”) who buy or sell Shares during the day from their broker on the secondary market may do so at a premium or discount relative to the per Share net asset value of the Trust.
Shareholders who decide to buy or sell Shares of the Trust will place their trade orders through their brokers and will incur customary brokerage commissions and charges. Prior to this offering, there has been no public market for the Shares. The Shares are expected to be listed for trading, subject to notice of issuance, on the Exchange under the ticker symbol “WINK.”
The Trust is offering an indeterminate number of Shares. The offering of an indeterminate amount of the Trust’s Shares is registered with the Securities and Exchange Commission (the “SEC”) in accordance with the Securities Act of 1933, as amended (the “1933 Act”). The offering is intended to be a continuous offering. The Trust is not a fund registered under the Investment Company Act of 1940, as amended (the “1940 Act”), and is not subject to regulation under the 1940 Act. Investors in the Trust will not, therefore, receive the regulatory protections afforded by funds registered under the 1940 Act. The Sponsor is not an “Investment Adviser” (as defined in Section 202(a)(11) of the Investment Advisers Act of 1940, as amended (the “Advisers Act”)), and therefore the Sponsor’s provision of services to the Trust will not be governed by the Advisers Act and is not subject to a fiduciary standard of care. The Trust is not a commodity pool for purposes of the Commodity Exchange Act of 1936, as amended (the “CEA”), and the Sponsor is not subject to regulation by the Commodity Futures Trading Commission (the “CFTC”) as a commodity pool operator or a commodity trading advisor. Shareholders in the Trust will not benefit from the protections afforded to investors in ZEC futures contracts on regulated futures markets. The Trust’s Shares are neither interests in nor obligations of the Sponsor or the Trustee.
On [ ], 2026, [ ] (the “Seed Capital Investor”) purchased [ ] Shares at a per-Share price of $[ ] (the “Seed Shares”). Total proceeds to the Trust from the sale of the Seed Shares were $[ ]. The Trust will purchase $[ ] in ZEC with the proceeds of the Seed Shares. The Seed Capital Investor will act as a statutory underwriter in connection with the Seed Shares. As of the date of this Prospectus, these [ ] Shares represent all of the outstanding Shares. See “Seed Capital Investor” for additional information.
The price of the Seed Shares was determined as described herein and such Shares could be sold at different prices if sold by the Seed Capital Investor at different times.
Winklevoss Capital Fund, LLC, through one or more of its affiliates, has indicated an interest in purchasing an aggregate of up to $100 million of Shares in this offering from Authorized Participants or in the marketplace through broker-dealers. However, because indications of interest are not binding agreements or commitments to purchase, these potential purchasers could determine to purchase more, fewer or no Shares.
AN INVESTMENT IN THE TRUST INVOLVES SIGNIFICANT RISKS AND MAY NOT BE SUITABLE FOR SHAREHOLDERS WHO ARE NOT IN A POSITION TO ACCEPT MORE RISK THAN MAY BE INVOLVED WITH EXCHANGE-TRADED PRODUCTS THAT DO NOT HOLD ZEC. THE SHARES ARE SPECULATIVE SECURITIES. THEIR PURCHASE INVOLVES A HIGH DEGREE OF RISK AND YOU COULD LOSE YOUR ENTIRE INVESTMENT. YOU SHOULD CONSIDER ALL RISK FACTORS BEFORE INVESTING IN THE TRUST. PLEASE REFER TO “RISK FACTORS” BEGINNING ON PAGE 20.
THE SHARES OF THE TRUST ARE NEITHER INTERESTS IN NOR OBLIGATIONS OF THE SPONSOR, THE TRUSTEE, THE ADMINISTRATOR, THE TRANSFER AGENT, THE MARKETING AGENT, THE CUSTODIAN OR ANY OF THEIR RESPECTIVE AFFILIATES. THE SHARES ARE NOT INSURED OR GUARANTEED BY THE FEDERAL DEPOSIT INSURANCE CORPORATION OR ANY OTHER GOVERNMENTAL AGENCY.
NEITHER THE SEC NOR ANY STATE SECURITIES COMMISSION HAS APPROVED OR DISAPPROVED OF THE SECURITIES OFFERED IN THIS PROSPECTUS, OR DETERMINED IF THIS PROSPECTUS IS TRUTHFUL OR COMPLETE. ANY REPRESENTATION TO THE CONTRARY IS A CRIMINAL OFFENSE.
THE TRUST IS AN “EMERGING GROWTH COMPANY” AS THAT TERM IS USED IN THE JUMPSTART OUR BUSINESS STARTUPS ACT OF 2012 AND, AS SUCH, MAY ELECT TO COMPLY WITH CERTAIN REDUCED REPORTING REQUIREMENTS.
The date of this Prospectus is , 2026