BTGO · Bitgo Holdings, Inc.

The sales reported on this Form 4 represent shares sold by the Reporting Person to cover tax withholding obligations in connection with the vesting and settlement of restricted stock units to satisfy tax withholding obligations to be funded by a "sell to cover" transaction.

The price reported in this line item is a weighted average price. These shares were sold as part of block trades for multiple security holders of the Issuer at prices ranging from $4.96 to $5.07 inclusive. The Reporting Person undertakes to provide to the Issuer, any securityholder 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 herein with regard to the block trades.

The sales reported on this Form 4 represent shares sold by the Reporting Person to cover tax withholding obligations in connection with the vesting and settlement of restricted stock units to satisfy tax withholding obligations to be funded by a "sell to cover" transaction.

The price reported in this line item is a weighted average price. These shares were sold as part of block trades for multiple security holders of the Issuer at prices ranging from $4.96 to $5.07, inclusive. The Reporting Person undertakes to provide to the Issuer, any securityholder 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 herein with regard to the block trades.

The sales reported on this Form 4 represent shares sold by the Reporting Person to cover tax withholding obligations in connection with the vesting and settlement of restricted stock units to satisfy tax withholding obligations to be funded by a "sell to cover" transaction.

The price reported in this line item is a weighted average price. These shares were sold as part of block trades for multiple security holders of the Issuer at prices ranging from $4.96 to $5.07, inclusive. The Reporting Person undertakes to provide to the Issuer, any securityholder 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 herein with regard to the block trades.

The sales reported on this Form 4 represent shares sold by the Reporting Person to cover tax withholding obligations in connection with the vesting and settlement of restricted stock units. The sales were to satisfy tax withholding obligations to be funded by a "sell to cover" transaction.

The price reported in this line item is a weighted average price. These shares were sold as part of block trades for multiple security holders of the Issuer at prices ranging from $4.78 to $5.04, inclusive. The Reporting Person undertakes to provide to the Issuer, any securityholder 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 herein with regard to the block trades.

The sales reported on this Form 4 represent shares sold by the Reporting Person to cover tax withholding obligations in connection with the vesting and settlement of restricted stock units. The sales were to satisfy tax withholding obligations to be funded by a "sell to cover" transaction.

The price reported in this line item is a weighted average price. These shares were sold as part of block trades for multiple security holders of the Issuer at prices ranging from $4.78 to $5.04, inclusive. The Reporting Person undertakes to provide to the Issuer, any securityholder 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 herein with regard to the block trades.

Each phantom stock unit (each a "Unit") represents the economic equivalent of one share of the Issuer's Class A common stock. On July 24, 2026, certain Units held by the Reporting Person were settled for cash as described in footnotes (2) and (4) to this Form 4.

The reported transaction represents the vesting of 261 Units on July 22, 2026, which transaction settled on July 24, 2026. The remaining 5,217 Units vest in substantially equal monthly installments through March 1, 2028, subject to the Reporting Person's provision of service to the Issuer on each vesting date.

This award does not expire; it either vests or is canceled prior to the vesting date.

Each phantom stock unit (each a "Unit") represents the economic equivalent of one share of the Issuer's Class A common stock. On July 24, 2026, certain Units held by the Reporting Person were settled for cash as described in footnotes (2) and (4) to this Form 4.

The reported transaction represents the vesting of 782 Units on July 22, 2026, which transaction settled on July 24, 2026. The remaining 23,445 Units vest in substantially equal monthly installments through December 18, 2028, subject to the Reporting Person's provision of service to the Issuer on each vesting date.

This award does not expire; it either vests or is canceled prior to the vesting date.

The sales reported on this Form 4 represent shares sold by the Reporting Person to cover tax withholding obligations in connection with the vesting and settlement of RSUs. The sales were to satisfy tax withholding obligations to be funded by a "sell to cover" transaction.

The sales reported on this Form 4 represent shares sold by the Reporting Person to cover tax withholding obligations in connection with the vesting and settlement of RSUs. The sales were to satisfy tax withholding obligations to be funded by a "sell to cover" transaction.

The sales reported on this Form 4 represent shares sold by the Reporting Person to cover tax withholding obligations in connection with the vesting and settlement of RSUs. The sales were to satisfy tax withholding obligations to be funded by a "sell to cover" transaction.

The price reported in this line item is a weighted average price. These shares were sold as part of block trades for multiple security holders of the Issuer at prices ranging from $5.02 to $5.19, inclusive. The Reporting Person undertakes to provide to the Issuer, any securityholder 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 herein with regard to the block trades.

The sales reported on this Form 4 represent shares sold by the Reporting Person to cover tax withholding obligations in connection with the vesting and settlement of RSUs. The sales were to satisfy tax withholding obligations to be funded by a "sell to cover" transaction.

The price reported in this line item is a weighted average price. These shares were sold as part of block trades for multiple security holders of the Issuer at prices ranging from $5.02 to $5.19, inclusive. The Reporting Person undertakes to provide to the Issuer, any securityholder 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 herein with regard to the block trades.

Each phantom stock unit (each a "Unit") represents the economic equivalent of one share of the Issuer's Class A common stock. On May 22, 2026, certain Units held by the Reporting Person were settled for cash as described in footnotes (2) and (4) to this Form 4.

The reported transaction represents the vesting of 260 Units on April 1, 2026 and 261 Units on May 1, 2026, which transaction settled on May 22, 2026. The remaining 5,478 Units vest in substantially equal monthly installments.through March 1, 2028, subject to the Reporting Person's provision of service to the Issuer on each vesting date.

This award does not expire; it either vests or is canceled prior to the vesting date.

Each phantom stock unit (each a "Unit") represents the economic equivalent of one share of the Issuer's Class A common stock. On May 22, 2026, certain Units held by the Reporting Person were settled for cash as described in footnotes (2) and (4) to this Form 4.

The reported transaction represents the vesting of 782 Units on April 18, 2026 and 781 Units on May 18, 2026, which transaction settled on May 22, 2026. The remaining 24,227 Units vest in substantially equal monthly installments.through December 18, 2028, subject to the Reporting Person's provision of service to the Issuer on each vesting date.

This award does not expire; it either vests or is canceled prior to the vesting date.

The transaction represents the number of shares of Class A Common Stock withheld by the Issuer to satisfy tax withholding liabilities in connection with the net settlement of restricted stock units.

The transaction represents the number of shares of Class A Common Stock withheld by the Issuer to satisfy tax withholding liabilities in connection with the net settlement of restricted stock units ("RSUs").

The transaction represents the number of shares of Class A Common Stock withheld by the Issuer to satisfy tax withholding liabilities in connection with the net settlement of restricted stock units ("RSUs").

The transaction represents the number of shares of Class A Common Stock withheld by the Issuer to satisfy tax withholding liabilities in connection with the net settlement of restricted stock units ("RSUs").

The transaction represents the number of shares of Class A Common Stock withheld by the Issuer to satisfy tax withholding liabilities in connection with the net settlement of restricted stock units ("RSUs").

Represents an award of restricted stock units ("RSUs") that vests in accordance with the terms of the award. Each RSU represents a contingent right to receive one share of the Issuer's Class A Common Stock.

Represents an award of restricted stock units ("RSUs") that vests in accordance with the terms of the award. Each RSU represents a contingent right to receive one share of the Issuer's Class A Common Stock.

Represents an award of restricted stock units ("RSUs") that vests in accordance with the terms of the award. Each RSU represents a contingent right to receive one share of the Issuer's Class A Common Stock.

The options will vest as to 25% of the award on March 30, 2027, and the remaining 75% of the options will vest in equal monthly installments thereafter until such time as the options are 100% vested, subject to the Reporting Person's provision of service to the Issuer on each vesting date.

Represents an award of restricted stock units ("RSUs") that vests in accordance with the terms of the award. Each RSU represents a contingent right to receive one share of the Issuer's Class A Common Stock.

Represents an award of restricted stock units ("RSUs") that vests in accordance with the terms of the award. Each RSU represents a contingent right to receive one share of the Issuer's Class A Common Stock.

The options will vest as to 25% of the award on March 30, 2027, and the remaining 75% of the options will vest in equal monthly installments thereafter until such time as the options are 100% vested, subject to the Reporting Person's provision of service to the Issuer on each vesting date.

Represents an award of restricted stock units ("RSUs") that vests in accordance with the terms of the award. Each RSU represents a contingent right to receive one share of the Issuer's Class A Common Stock.

Represents an award of restricted stock units ("RSUs") that vests in accordance with the terms of the award. Each RSU represents a contingent right to receive one share of the Issuer's Class A Common Stock.

The transaction represents the number of shares of Class A Common Stock withheld by the Issuer to satisfy tax withholding liabilities in connection with the net settlement of restricted stock units.

Each share of Series Seed Preferred Stock, Series B Preferred Stock, Series B-3 Preferred Stock and Series C-2 Preferred Stock automatically converted into one share of the Issuer's Class A Common Stock immediately upon the closing of the Issuer's initial public offering and had no expiration date.

Shares held of record by Valor Equity Partners VI L.P.

Each share of Series A and Series B Preferred Stock automatically converted into shares of Class A Common Stock immediately prior to the closing of the Issuer's initial public offering for no additional consideration on a 1-for-1 basis and had no expiration date.

Redpoint Ventures V, LLC ("RV V LLC"), is the sole general partner of Redpoint Ventures V, L.P. ("RV V"). RV V LLC and Redpoint Associates V, LLC ("RA V") are under common control. As such, RV V LLC has sole voting and investment control over the shares owned by RV V, and may be deemed to beneficially own the shares held by RV V. Each of the Reporting Persons disclaims beneficial ownership of the shares reported herein, except to the extent of its respective pecuniary interest therein.

Each share of Series Seed Preferred Stock, Series B Preferred Stock, Series B-3 Preferred Stock and Series C-2 Preferred Stock automatically converted into one share of the Issuer's Class A Common Stock immediately upon the closing of the Issuer's initial public offering and had no expiration date.

Shares held of record by Valor Equity Partners VI L.P.

Each share of Series Seed Preferred Stock, Series B Preferred Stock, Series B-3 Preferred Stock and Series C-2 Preferred Stock automatically converted into one share of the Issuer's Class A Common Stock immediately upon the closing of the Issuer's initial public offering and had no expiration date.

Shares held of record by Valor Digital Investments, LLC - Series 1.

Each share of Series Seed Preferred Stock, Series B Preferred Stock, Series B-3 Preferred Stock and Series C-2 Preferred Stock automatically converted into one share of the Issuer's Class A Common Stock immediately upon the closing of the Issuer's initial public offering and had no expiration date.

Shares held of record by Valor Equity Partners VI-B L.P.

Each share of Series Seed Preferred Stock, Series A Preferred Stock, Series B Preferred Stock, Series B-1 Preferred Stock, Series B-2 Preferred Stock, Series B-3 Preferred Stock, Series C Preferred Stock, Series C-1 Preferred Stock and Series C-2 Preferred Stock will automatically convert into 1 share of the Issuer's Class A Common Stock immediately upon the closing of the Issuer's initial public offering and has no expiration date.

Each share of Series Seed Preferred Stock, Series B Preferred Stock, Series B-3 Preferred Stock and Series C-2 Preferred Stock automatically converted into one share of the Issuer's Class A Common Stock immediately upon the closing of the Issuer's initial public offering and had no expiration date.

Shares held of record by Valor Equity Partners VI-A L.P.

Each share of Series Seed Preferred Stock, Series B Preferred Stock, Series B-3 Preferred Stock and Series C-2 Preferred Stock automatically converted into one share of the Issuer's Class A Common Stock immediately upon the closing of the Issuer's initial public offering and had no expiration date.

Shares held of record by Valor Equity Partners VI L.P.

Each share of Series Seed Preferred Stock, Series B Preferred Stock, Series B-3 Preferred Stock and Series C-2 Preferred Stock automatically converted into one share of the Issuer's Class A Common Stock immediately upon the closing of the Issuer's initial public offering and had no expiration date.

Shares held of record by Valor Equity Partners VI-B L.P.

Each share of Series Seed Preferred Stock, Series B Preferred Stock, Series B-3 Preferred Stock and Series C-2 Preferred Stock automatically converted into one share of the Issuer's Class A Common Stock immediately upon the closing of the Issuer's initial public offering and had no expiration date.

Shares held of record by Valor Equity Partners VI-B L.P.

Each share of Series A and Series B Preferred Stock automatically converted into shares of Class A Common Stock immediately prior to the closing of the Issuer's initial public offering for no additional consideration on a 1-for-1 basis and had no expiration date.

Each share of Series Seed Preferred Stock, Series B Preferred Stock, Series B-3 Preferred Stock and Series C-2 Preferred Stock automatically converted into one share of the Issuer's Class A Common Stock immediately upon the closing of the Issuer's initial public offering and had no expiration date.

Shares held of record by Valor Digital Investments, LLC - Series 2.

Each share of Series Seed Preferred Stock, Series B Preferred Stock, Series B-3 Preferred Stock and Series C-2 Preferred Stock automatically converted into one share of the Issuer's Class A Common Stock immediately upon the closing of the Issuer's initial public offering and had no expiration date.

Shares held of record by Valor Digital Investments, LLC - Series 2.

Each share of Series Seed Preferred Stock, Series B Preferred Stock, Series B-3 Preferred Stock and Series C-2 Preferred Stock automatically converted into one share of the Issuer's Class A Common Stock immediately upon the closing of the Issuer's initial public offering and had no expiration date.

Shares held of record by Valor Equity Partners VI-A L.P.

Each share of Series Seed Preferred Stock, Series B Preferred Stock, Series B-3 Preferred Stock and Series C-2 Preferred Stock automatically converted into one share of the Issuer's Class A Common Stock immediately upon the closing of the Issuer's initial public offering and had no expiration date.

Shares held of record by Valor Equity Partners VI-B L.P.

Each share of Series Seed Preferred Stock, Series A Preferred Stock, Series B Preferred Stock, Series B-1 Preferred Stock, Series B-2 Preferred Stock, Series B-3 Preferred Stock, Series C Preferred Stock, Series C-1 Preferred Stock and Series C-2 Preferred Stock will automatically convert into 1 share of the Issuer's Class A Common Stock immediately upon the closing of the Issuer's initial public offering and has no expiration date.

Each share of Series A and Series B Preferred Stock automatically converted into shares of Class A Common Stock immediately prior to the closing of the Issuer's initial public offering for no additional consideration on a 1-for-1 basis and had no expiration date.

Each share of Series Seed Preferred Stock, Series B Preferred Stock, Series B-3 Preferred Stock and Series C-2 Preferred Stock automatically converted into one share of the Issuer's Class A Common Stock immediately upon the closing of the Issuer's initial public offering and had no expiration date.

Shares held of record by Valor Equity Partners VI-B L.P.

Each share of Series Seed Preferred Stock, Series B Preferred Stock, Series B-3 Preferred Stock and Series C-2 Preferred Stock automatically converted into one share of the Issuer's Class A Common Stock immediately upon the closing of the Issuer's initial public offering and had no expiration date.

Shares held of record by Valor Equity Partners VI L.P.

Each share of Series Seed Preferred Stock, Series B Preferred Stock, Series B-3 Preferred Stock and Series C-2 Preferred Stock automatically converted into one share of the Issuer's Class A Common Stock immediately upon the closing of the Issuer's initial public offering and had no expiration date.

Shares held of record by Valor Equity Partners VI-A L.P.

Each share of Series A and Series B Preferred Stock automatically converted into shares of Class A Common Stock immediately prior to the closing of the Issuer's initial public offering for no additional consideration on a 1-for-1 basis and had no expiration date.

Redpoint Ventures V, LLC ("RV V LLC"), is the sole general partner of Redpoint Ventures V, L.P. ("RV V"). RV V LLC and Redpoint Associates V, LLC ("RA V") are under common control. As such, RV V LLC has sole voting and investment control over the shares owned by RV V, and may be deemed to beneficially own the shares held by RV V. Each of the Reporting Persons disclaims beneficial ownership of the shares reported herein, except to the extent of its respective pecuniary interest therein.