Gemini the crypto exchange (Gemini Space Station, Inc., ticker GEMI, not Google's Gemini AI model) is controlled by co-founders Cameron and Tyler Winklevoss through Winklevoss Capital Fund, which holds all of its Class B stock. Gemini's 2026 proxy statement puts that at 94.5% of total voting power as of April 20, 2026, with public shareholders owning the Class A stock that trades on Nasdaq.
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The twins' economic stake is smaller than their voting stake, and it grew after a May 2026 private placement. The sections below separate votes from shares and date every figure to its SEC filing.
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Gemini Space Station, Inc. is a publicly listed company with two share classes. Public investors own the one vote Class A shares, while the Winklevoss twins, through their investment fund, own every ten vote Class B share. That structure gives the twins control even though public holders own a large block of stock.
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Gemini's DEF 14A proxy reports 43,999,845 Class A shares and 75,126,784 Class B shares outstanding as of April 20, 2026. It names Winklevoss Capital Fund, LLC as the holder of 100% of the Class B stock and the entities affiliated with Morgan Creek as holders of 6.0% of Class A.
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This page is about the exchange. Google's Gemini assistant is a product of Alphabet and has no ownership link to Gemini Space Station. The exchange's IPO prospectus says Gemini was founded in 2014 to buy, sell and store crypto assets.
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The Winklevoss twins control nearly all of Gemini's votes and own a majority of its shares on an as converted basis. They hold the stake jointly through Winklevoss Capital Fund, which they manage, so the same block of shares is reported under each brother's name rather than split between them.
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Their May 2026 Schedule 13D reports beneficial ownership of 82,269,641 Class A shares, or 65.1% of the class. That figure counts 7,142,857 Class A shares plus 75,126,784 Class B shares that can be exchanged one for one into Class A at any time.
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The proxy footnotes explain the reporting. Tyler and Cameron Winklevoss are the co-founders and principals of Winklevoss Capital Fund and the managers of its managing entity, and they exercise shared voting and dispositive control over its shares. Tyler is CEO and Cameron is President, per the same filing.
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The rows use different dates and different denominators. The 13D percentage counts the twins' Class B shares as if converted, which the filing itself spells out, while the BlackRock and Morgan Creek percentages are measured against Class A shares alone.
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Gemini has two classes of common stock with different voting rights. Class A carries one vote per share and is the class listed on Nasdaq. Class B carries ten votes per share, is held entirely by the Winklevoss fund, and can be exchanged into Class A on a one for one basis.
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The 2026 proxy confirms the ten votes per Class B share and one vote per Class A share. At the IPO, the final prospectus said Class A holders would hold 5.3% of combined voting power and the co-founders 94.7%, making Gemini a controlled company under Nasdaq rules.
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Controlled company status qualifies Gemini for exemptions from certain Nasdaq corporate governance requirements, as the prospectus explains in its section on management. The practical effect for outside shareholders is that director elections and most stockholder votes follow the twins' choices.
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Gemini went public in September 2025 through a Nasdaq listing of its Class A stock under the symbol GEMI. Before that, the company had no public market for its shares, and the twins converted their interests in the predecessor company into Class B stock just before the offering.
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The 424B4 prospectus filed September 15, 2025 covers 15,178,572 Class A shares at an initial public offering price of $28.00 per share. The same prospectus describes a concurrent private placement in which Nasdaq, Inc. agreed to buy 1,904,761 Class A shares at $26.25 per share.
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The twins' route into Class B is set out in their Schedule 13D. It says that on September 15, 2025 they received 75,085,013 Class B shares in exchange for units of Gemini Space Station, LLC, including units converted from about $228.0 million of convertible notes and about $467.6 million of convertible term loans held by Winklevoss Capital Fund.
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The Winklevoss fund bought new Class A shares directly from Gemini in a private placement and paid in bitcoin. That added common stock on top of the fund's existing Class B block and lifted its as converted ownership. Gemini also disclosed leadership departures earlier in the year.
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WCF delivered to the Issuer approximately 1,258 Bitcoin as payment-in-kind for the Class A Shares pursuant to the terms of the Securities Purchase Agreement. The Private Placement closed on May 14, 2026 (Schedule 13D).

That passage is from Item 3 of the May 2026 Schedule 13D, which also states that the agreement covered 7,142,857 Class A shares at $14 per share for aggregate proceeds of $100 million.
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On management, the 2026 proxy notes that the company announced the departures of Dan Chen, Marshall Beard and Tyler Meade on February 17, 2026, and that Danijela Stojanovic has served as Interim Chief Financial Officer since February 2026.
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Ownership filings for a newly listed company move quickly, and different filings measure stakes in different ways. A single headline percentage for Gemini can mislead unless the reader knows whether it refers to votes, Class A shares only, or shares counted on an as converted basis.

No. Gemini Space Station, the crypto exchange, is controlled by the Winklevoss twins, per its 2026 proxy. Google's Gemini is an unrelated AI product.
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Tyler Winklevoss is Co-Founder, CEO and a director, and Cameron Winklevoss is Co-Founder, President and a director, according to the 2026 proxy.
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$28.00 per Class A share, per the September 2025 prospectus.
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BlackRock reported 2,834,377 Class A shares, or 5.5% of the class, as of June 30, 2026, in a Schedule 13G filed July 29, 2026.
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Yes. Class B shares can be exchanged at any time for Class A shares on a one for one basis, per the May 2026 Schedule 13D.
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All figures were taken from the SEC EDGAR filings listed below. No third-party aggregators or news summaries were used for any number.