GEMI · Gemini Space Station, Inc.

Represents shares of Class A common stock sold solely to cover tax withholding obligations in connection with the vesting and settlement of RSUs. The sale was effected pursuant to the issuer's Automatic Sell-to-Cover Policy, which is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c), and does not represent a discretionary trade by the Reporting Person.

The price reported in Column 4 is the weighted average price. These shares were sold in multiple transactions at prices ranging from $3.93 to $4.25. The Reporting Person undertakes to provide the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

Represents shares of Class A common stock sold solely to cover tax withholding obligations in connection with the vesting and settlement of RSUs. The sale was effected pursuant to the issuer's sell-to-cover procedures and does not represent a discretionary trade by the Reporting Person.

The price reported in Column 4 is the weighted average price. These shares were sold in multiple transactions at prices ranging from $4.13 to $4.87. The Reporting Person undertakes to provide the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

Represents a grant of 22,453 restricted stock units ("RSUs"), which immediately vest in full. Each RSU represents a contingent right to receive one share of Class A common stock.

Represents restricted stock units ("RSUs") granted to the Reporting Person pursuant to the Issuer's Non-Employee Director Compensation Policy. Each RSU represents a contingent right to receive one share of the Issuer's Class A common stock upon vesting. The RSUs vest on the earlier of (i) the first anniversary of the grant date and (ii) the day immediately preceding the Issuer's next annual meeting of stockholders following the grant date, subject to the Reporting Person's continued service through the applicable vesting date.

Represents restricted stock units ("RSUs") granted to the Reporting Person pursuant to the Issuer's Non-Employee Director Compensation Policy. Each RSU represents a contingent right to receive one share of the Issuer's Class A common stock upon vesting. The RSUs vest on the earlier of (i) the first anniversary of the grant date and (ii) the day immediately preceding the Issuer's next annual meeting of stockholders following the grant date, subject to the Reporting Person's continued service through the applicable vesting date.

Represents restricted stock units ("RSUs") granted to the Reporting Person pursuant to the Issuer's Non-Employee Director Compensation Policy. Each RSU represents a contingent right to receive one share of the Issuer's Class A common stock upon vesting. The RSUs vest on the earlier of (i) the first anniversary of the grant date and (ii) the day immediately preceding the Issuer's next annual meeting of stockholders following the grant date, subject to the Reporting Person's continued service through the applicable vesting date.

Represents restricted stock units ("RSUs") granted to the Reporting Person pursuant to the Issuer's Non-Employee Director Compensation Policy. Each RSU represents a contingent right to receive one share of the Issuer's Class A common stock upon vesting. The RSUs vest on the earlier of (i) the first anniversary of the grant date and (ii) the day immediately preceding the Issuer's next annual meeting of stockholders following the grant date, subject to the Reporting Person's continued service through the applicable vesting date.

Represents shares of Class A common stock sold solely to cover tax withholding obligations in connection with the vesting and settlement of restricted stock units. The sale was effected pursuant to the issuer's sell-to-cover procedures and does not represent a discretionary trade by the Reporting Person.

The price reported in Column 4 is the weighted average price. These shares were sold in multiple transactions at prices ranging from $5.00 to $5.16. The Reporting Person undertakes to provide the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

On May 14, 2026, Winklevoss Capital Fund, LLC ("WCF") purchased from the Issuer, in a private placement, 7,142,857 shares of Class A Common Stock, at a price of $14 per share, for aggregate proceeds to the Issuer of $100 million.

Messrs. Tyler Winklevoss and Cameron Winklevoss are the Co-Founders and Principals of WCF, as well as the Managers of the managing entity of WCF, and exercise shared voting and dispositive control over the shares held by WCF. As a result, each of Messrs. Tyler Winklevoss and Cameron Winklevoss may be deemed the beneficial owner of the securities beneficially owned by WCF and disclaims such beneficial ownership except to the extent of their respective pecuniary interest therein.

Represents a grant of 18,656 restricted stock units ("RSUs"), which will vest over a one (1) year period in four (4) substantially equal quarterly installments beginning on May 20, 2026, subject to the reporting person's continuous service through such date. Each RSU represents a contingent right to receive one share of Class A common stock.

Represents a grant of 25,559 restricted stock units ("RSUs"), which will vest over a two-year period in substantially equal quarterly installments beginning on the first quarterly vesting date after the vesting commencement date of February 20, 2026, subject to the reporting person's continuous service through such date. Each RSU represents a contingent right to receive one share of Class A common stock.

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $9.90 to $9.93. The reporting person undertakes to provide the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

Tessera Venture Capital Fund II GP, LLC is the general partner of Tessera Venture Capital Fund II, LP. The reporting person is a Managing Partner of Tessera Venture Capital Fund II GP, LLC, and may be deemed to beneficially own the securities reported herein, but disclaims beneficial ownership except to the extent of his pecuniary interest, if any, therein.

Due to an ethical wall between the reporting person and Tessera Venture Capital Fund II, LP (the "Tessera Fund") that prevents (i) the sharing of information related to the Issuer between the reporting person and the Tessera Fund and their respective representatives, and (ii) participation in investment or voting decisions with respect to the shares of Class A common stock of the Issuer held by the Tessera Fund. As a result thereof, the reporting person disclaims any beneficial or pecuniary interest in any shares sold by the Tessera Fund. Following the reported transaction, the Tessera Fund held zero shares of the Issuer's Class A common stock.

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $8.80 to $8.89. The reporting person undertakes to provide the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

Tessera Venture Capital Fund II GP, LLC is the general partner of Tessera Venture Capital Fund II, LP. The reporting person is a Managing Partner of Tessera Venture Capital Fund II GP, LLC, and may be deemed to beneficially own the securities reported herein, but disclaims beneficial ownership except to the extent of his pecuniary interest, if any, therein.

Due to an ethical wall between the reporting person and Tessera Venture Capital Fund II, LP (the "Tessera Fund") that prevents (i) the sharing of information related to the Issuer between the reporting person and the Tessera Fund and their respective representatives, and (ii) participation in investment or voting decisions with respect to the shares of Class A common stock of the Issuer held by the Tessera Fund. As a result thereof, the reporting person disclaims any beneficial or pecuniary interest in any shares sold by the Tessera Fund. Following the reported transaction, the Tessera Fund held zero shares of the Issuer's Class A common stock.

Represents a grant of 132,275 restricted stock units ("RSUs"), which will vest in substantially equal quarterly installments over a two-year period, subject to the reporting person's continuous service through such date. Each RSU represents a contingent right to receive one share of Class A common stock.

Represents shares of Class A common stock withheld by the Issuer to satisfy tax withholding upon the vesting of restricted stock units.

Represents shares of Class A common stock withheld by the Issuer to satisfy tax withholding upon the vesting of restricted stock units.

Represents shares of Class A common stock withheld by the Issuer to satisfy tax withholding upon the vesting of restricted stock units.

Represents shares of Class A common stock withheld by the Issuer to satisfy tax withholding upon the vesting of restricted stock units.

Represents shares of Class A common stock withheld by the Issuer to satisfy tax withholding upon the vesting of restricted stock units.

Represents shares of Class A common stock withheld by the Issuer to satisfy tax withholding upon the vesting of restricted stock units.

Represents shares of Class A common stock withheld by the Issuer to satisfy tax withholding upon the vesting of restricted stock units.

Represents shares of Class A common stock withheld by the Issuer to satisfy tax withholding upon the vesting of restricted stock units.

Represents shares of Class A common stock withheld by the Issuer to satisfy tax withholding upon the vesting of restricted stock units.

Represents shares of Class A common stock withheld by the Issuer to satisfy tax withholding upon the vesting of restricted stock units.

In connection with the Issuer's initial public offering and related reorganizational transactions, the reporting person received 8,910 shares of Class A common stock in exchange for the reporting person's corresponding incentive profits interest units in Gemini Astronaut Corps, LLC, including 5,513 shares of restricted Class A common stock for incentive profit interest units that have not vested.

In connection with the Issuer's initial public offering and related reorganizational transactions, Tessera Venture Capital Fund II, LP ("Tessera Fund") received 35,713 shares of Class A common stock in exchange for its corresponding Series B preferred LLC interests in Gemini Space Station, LLC.

The reporting person is a Managing Partner of Tessera Fund and may be deemed to beneficially own the shares held by Tessera Fund. The reporting person disclaims beneficial ownership of such shares, except to the extent of his pecuniary interest therein.

These shares were sold in the secondary offering that occurred in conjunction with the IPO.

Shares of the Issuer's Class B common stock may be exchanged at any time, at the option of the holder, for newly issued shares of the Issuer's Class A common stock, on a one-for-one basis. All outstanding shares of Class B common stock will convert automatically into shares of Class A common stock upon the occurrence of certain events. Shares of Class B common stock do not otherwise expire.

In connection with the Issuer's IPO and related reorganizational transactions, WCF received 41,771 shares of Class B common stock in exchange for its corresponding incentive profits interest units in Gemini Astronaut Corps, LLC.

Messrs. Tyler Winklevoss and Cameron Winklevoss are the Co-Founders and Principals of WCF, as well as the Managers of the managing entity of WCF, and exercise shared voting and dispositive control over the shares held by WCF. The reporting person disclaims beneficial ownership of such shares, except to the extent of his pecuniary interest therein

Shares of the Issuer's Class B common stock may be exchanged at any time, at the option of the holder, for newly issued shares of the Issuer's Class A common stock, on a one-for-one basis. All outstanding shares of Class B common stock will convert automatically into shares of Class A common stock upon the occurrence of certain events. Shares of Class B common stock do not otherwise expire.

On September 15, 2025, immediately prior to the consummation of the Issuer's initial public offering ("IPO"), Messrs. Tyler Winklevoss and Cameron Winklevoss received an aggregate of 75,085,013 shares of Class B common stock of the Issuer in exchange for their interests in units of Gemini Space Station, LLC, a Nevada limited liability company, which is considered the predecessor of the Issuer for accounting purposes, including the units automatically converted from (i) approximately $228.0 million in aggregate principal (plus accrued and unpaid interest thereon) in the Issuer's certain convertible notes previously issued to Winklevoss Capital Fund, LLC ("WCF") and (ii) approximately $467.6 million in aggregate principal (plus accrued and unpaid interest thereon) in the Issuer's certain convertible term loans with WCF, each outstanding as of the closing date of the IPO.

Messrs. Tyler Winklevoss and Cameron Winklevoss are the Co-Founders and Principals of WCF, as well as the Managers of the managing entity of WCF, and exercise shared voting and dispositive control over the shares held by WCF. The reporting person disclaims beneficial ownership of such shares, except to the extent of his pecuniary interest therein

Gemini Space Station, LLC was the sole stockholder of the Issuer and held a nominal amount of common stock of the Issuer, which was cancelled in connection with the reorganizational transactions consummated immediately prior to or upon closing of the Issuer's initial public offering on September 15, 2025.

Messrs. Tyler Winklevoss and Cameron Winklevoss are the Co-Founders and Principals of Winklevoss Capital Fund, LLC, as well as the Managers of the managing entity of Winklevoss Capital Fund, LLC. As a result, each of Messrs. Tyler Winklevoss and Cameron Winklevoss may be deemed the beneficial owner of the securities beneficially owned by Winklevoss Capital Fund, LLC and disclaims such beneficial ownership except to the extent of their respective pecuniary interest therein.

Shares of the Issuer's Class B common stock may be exchanged at any time, at the option of the holder, for newly issued shares of the Issuer's Class A common stock, on a one-for-one basis. All outstanding shares of Class B common stock will convert automatically into shares of Class A common stock upon the occurrence of certain events. Shares of Class B common stock do not otherwise expire.

In connection with the Issuer's IPO and related reorganizational transactions, WCF received 41,771 shares of Class B common stock in exchange for its corresponding incentive profits interest units in Gemini Astronaut Corps, LLC.

Messrs. Tyler Winklevoss and Cameron Winklevoss are the Co-Founders and Principals of WCF, as well as the Managers of the managing entity of WCF, and exercise shared voting and dispositive control over the shares held by WCF. As a result, each of Messrs. Tyler Winklevoss and Cameron Winklevoss may be deemed the beneficial owner of the securities beneficially owned by WCF and disclaims such beneficial ownership except to the extent of their respective pecuniary interest therein.

Represents shares of Class A common stock withheld by the Issuer to satisfy tax withholding upon the vesting of restricted stock units.

Represents a transfer of 64,396 shares of Class A common stock for no consideration to certain trusts for the benefit of reporting person's family, for which an independent third-party serves as the trustee.

Shares of the Issuer's Class B common stock may be exchanged at any time, at the option of the holder, for newly issued shares of the Issuer's Class A common stock, on a one-for-one basis. All outstanding shares of Class B common stock will convert automatically into shares of Class A common stock upon the occurrence of certain events. Shares of Class B common stock do not otherwise expire.

In connection with the Issuer's IPO and related reorganizational transactions, WCF received 41,771 shares of Class B common stock in exchange for its corresponding incentive profits interest units in Gemini Astronaut Corps, LLC.

Messrs. Tyler Winklevoss and Cameron Winklevoss are the Co-Founders and Principals of WCF, as well as the Managers of the managing entity of WCF, and exercise shared voting and dispositive control over the shares held by WCF. The reporting person disclaims beneficial ownership of such shares, except to the extent of his pecuniary interest therein.

In connection with the Issuer's initial public offering and related reorganizational transactions, the reporting person received 805,615 shares of Class A common stock in exchange for the reporting person's corresponding incentive profits interest units in Gemini Astronaut Corps, LLC, including 546,710 shares of restricted Class A common stock for incentive profit interest units that have not vested.

Shares of the Issuer's Class B common stock may be exchanged at any time, at the option of the holder, for newly issued shares of the Issuer's Class A common stock, on a one-for-one basis. All outstanding shares of Class B common stock will convert automatically into shares of Class A common stock upon the occurrence of certain events. Shares of Class B common stock do not otherwise expire.

On September 15, 2025, immediately prior to the consummation of the Issuer's initial public offering ("IPO"), Messrs. Tyler Winklevoss and Cameron Winklevoss received an aggregate of 75,085,013 shares of Class B common stock of the Issuer in exchange for their interests in units of Gemini Space Station, LLC, a Nevada limited liability company, which is considered the predecessor of the Issuer for accounting purposes, including the units automatically converted from (i) approximately $228.0 million in aggregate principal (plus accrued and unpaid interest thereon) in the Issuer's certain convertible notes previously issued to Winklevoss Capital Fund, LLC ("WCF") and (ii) approximately $467.6 million in aggregate principal (plus accrued and unpaid interest thereon) in the Issuer's certain convertible term loans with WCF, each outstanding as of the closing date of the IPO.

Messrs. Tyler Winklevoss and Cameron Winklevoss are the Co-Founders and Principals of WCF, as well as the Managers of the managing entity of WCF, and exercise shared voting and dispositive control over the shares held by WCF. The reporting person disclaims beneficial ownership of such shares, except to the extent of his pecuniary interest therein.

These shares were sold in the secondary offering that occurred in conjunction with the IPO.

Shares of the Issuer's Class B common stock may be exchanged at any time, at the option of the holder, for newly issued shares of the Issuer's Class A common stock, on a one-for-one basis. All outstanding shares of Class B common stock will convert automatically into shares of Class A common stock upon the occurrence of certain events. Shares of Class B common stock do not otherwise expire.

On September 15, 2025, immediately prior to the consummation of the Issuer's initial public offering ("IPO"), Messrs. Tyler Winklevoss and Cameron Winklevoss received an aggregate of 75,085,013 shares of Class B common stock of the Issuer in exchange for their interests in units of Gemini Space Station, LLC, a Nevada limited liability company, which is considered the predecessor of the Issuer for accounting purposes, including the units automatically converted from (i) approximately $228.0 million in aggregate principal (plus accrued and unpaid interest thereon) in the Issuer's certain convertible notes previously issued to Winklevoss Capital Fund, LLC ("WCF") and (ii) approximately $467.6 million in aggregate principal (plus accrued and unpaid interest thereon) in the Issuer's certain convertible term loans with WCF, each outstanding as of the closing date of the IPO.

Messrs. Tyler Winklevoss and Cameron Winklevoss are the Co-Founders and Principals of WCF, as well as the Managers of the managing entity of WCF, and exercise shared voting and dispositive control over the shares held by WCF. As a result, each of Messrs. Tyler Winklevoss and Cameron Winklevoss may be deemed the beneficial owner of the securities beneficially owned by WCF and disclaims such beneficial ownership except to the extent of their respective pecuniary interest therein.

Represents shares of Class A common stock withheld by the Issuer to satisfy tax withholding upon the vesting of restricted stock units.

In connection with the Issuer's initial public offering and related reorganizational transactions, the reporting person received 632,106 shares of Class A common stock in exchange for the reporting person's corresponding incentive profits interest units in Gemini Astronaut Corps, LLC, including 432,639 shares of restricted Class A common stock for incentive profit interest units that have not vested.

Represents a grant of 9,089 restricted stock units ("RSUs"), which vested and settled in full upon the closing of the Issuer's initial public offering ("IPO"). Each RSU represents a contingent right to receive one share of Class A common stock.

Represents a grant of 7,142 restricted stock units ("RSUs"), which will vest in full on the first anniversary of the grant date, subject to the reporting person's continuous service through such date. Each RSU represents a contingent right to receive one share of Class A common stock.

Represents a grant of 7,142 restricted stock units ("RSUs"), which will vest in full on the first anniversary of the grant date, subject to the reporting person's continuous service through such date. Each RSU represents a contingent right to receive one share of Class A common stock.

These stock options vest over four years, with 25% vesting on a one-year cliff and the remaining portion vesting in quarterly installments.

Represents a grant of 7,142 restricted stock units ("RSUs"), which will vest in full on the first anniversary of the grant date, subject to the reporting person's continuous service through such date. Each RSU represents a contingent right to receive one share of Class A common stock.

Represents a grant of 267,857 RSUs, which vest over four years, with 25% vesting on a one-year cliff and the remaining portion vesting in quarterly installments.

Represents a grant of 903,971 RSUs, which vest in equal monthly installments over two years, with the first vesting installment occurring on February 24, 2025.

These stock options vest over four years, with 25% vesting on a one-year cliff and the remaining portion vesting in quarterly installments.

Represents a grant of 637,022 RSUs, which vest in equal monthly installments over two years, with the first vesting installment occurring on February 24, 2025.

Represents a grant of 214,285 RSUs, which vest over four years, with 25% vesting on a one-year cliff and the remaining portion vesting in quarterly installments.