ABTC · American Bitcoin Corp.

Represents a transfer of shares of Issuer Class A common stock granted to Mr. Busch as director compensation to his former law firm pursuant to their Partnership Agreement and a separate agreement between Mr. Busch and said partnership.

Reflects restricted stock units ("RSUs") that upon vesting converted into shares of Issuer Class A Common Stock on a one-for-one basis.

Each RSU represents a contingent right to receive one share of Issuer Class A common stock. The RSUs settled in either Class A common stock or cash (or a combination thereof) at the discretion of the Issuer.

These RSUs vested on the date of the 2026 Annual General Meeting of the Stockholders of the Issuer.

Each RSU represents a contingent right to receive one share of Issuer Class A common stock. The RSUs settled in either Class A common stock or cash (or a combination thereof) at the discretion of the Issuer.

These RSUs vested on the date of the 2026 Annual General Meeting of the Stockholders of the Issuer.

Reflects restricted stock units ("RSUs") that upon vesting converted into shares of Issuer Class A common stock on a one-for-one basis.

Each RSU represents a contingent right to receive one share of Issuer Class A Common Stock. The RSUs settled in either Class A Common Stock or cash (or a combination thereof) at the discretion of the Issuer.

These RSUs vested on the date of the 2026 Annual General Meeting of the Stockholders of the Issuer.

Reflects restricted stock units ("RSUs") that upon vesting converted into shares of Issuer Class A common stock on a one-for-one basis.

The price reported in Column 4 is a weighted average price. The Reporting Person undertakes to provide to 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 purchased at each separate price.

The price reported in Column 4 is a weighted average price. The Reporting Person undertakes to provide to 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 purchased at each separate price.

The price reported in Column 4 is a weighted average price. The Reporting Person undertakes to provide to 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 purchased at each separate price.

The price reported in Column 4 is a weighted average price. The Reporting Person undertakes to provide to 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 purchased at each separate price.

Each restricted stock unit ("RSU") represents a contingent right to receive one share of Class C Common Stock, par value $0.0001 per share, of American Bitcoin Corp. (the "Company").

These RSUs vest on the date of the 2026 Annual Meeting of Stockholders of the Company.

Each restricted stock unit ("RSU") represents a contingent right to receive one share of Class C Common Stock, par value $0.0001 per share, of American Bitcoin Corp. (the "Company").

These RSUs vest on the date of the 2026 Annual Meeting of Stockholders of the Company.

Each restricted stock unit ("RSU") represents a contingent right to receive one share of Class C Common Stock, par value $0.0001 per share, of American Bitcoin Corp. (the "Company").

These RSUs vest on the date of the 2026 Annual Meeting of Stockholders of the Company.

Each restricted stock unit ("RSU") represents a contingent right to receive one share of Class C Common Stock, par value $0.0001 per share, of American Bitcoin Corp. (the "Company").

These RSUs vest ratably in three equal annual installments on each of the first, second and third anniversaries of the grant date.

Shares of Class B Common Stock, par value $0.0001 per share ("Class B Common Stock"), of American Bitcoin Corp., a Delaware corporation (the "Issuer"), are convertible into an equal number of shares of Class A Common Stock, par value $0.0001 per share, of the Issuer for no additional consideration at any time at the option of the holder.

Represents shares of Class B Common Stock purchased in a privately negotiated transaction which is expected to close on or about January 20, 2026, subject to satisfaction of customary closing conditions.

The reported securities are held by a limited liability company ("LLC"). The Reporting Person and Asher Genoot are the managing members of the LLC and, as such, have voting and investment discretion with respect to, and may be deemed to have beneficial ownership of, the securities held by the LLC. The Reporting Person disclaims beneficial ownership of these shares except to the extent of his pecuniary interest therein.

Shares of Class B Common Stock, par value $0.0001 per share ("Class B Common Stock"), of American Bitcoin Corp., a Delaware corporation (the "Issuer"), are convertible into an equal number of shares of Class A Common Stock, par value $0.0001 per share, of the Issuer for no additional consideration at any time at the option of the holder.

Represents shares of Class B Common Stock purchased in a privately negotiated transaction which is expected to close on or about January 20, 2026, subject to satisfaction of customary closing conditions.

The reported securities are held by a limited liability company ("LLC"). The Reporting Person and Michael Ho are the managing members of the LLC and, as such, have voting and investment discretion with respect to, and may be deemed to have beneficial ownership of, the securities held by the LLC. The Reporting Person disclaims beneficial ownership of these shares except to the extent of his pecuniary interest therein.

On December 5, 2025, AM-0507 Fund I, a series of Green Meadow Ventures, LP ("AM-0507 Fund I"), distributed the shares of Class A Common Stock, par value $0.0001 per share ("Class A Common Stock"), of American Bitcoin Corp. (the "Company") held by AM-0507 Fund I to its partners on a pro rata basis for no consideration (the "Distribution").

Reflects the shares of Class A Common Stock that represent carried interest and were received in connection with the Distribution.

The reported securities are held by a limited liability company ("LLC 1"). Mr. Broukhim holds a membership interest in LLC 1 and, as a result, may be deemed to have a pecuniary interest in 13,386 shares of Class A Common Stock held by LLC 1.

Prior to September 3, 2025, American Bitcoin Corp. (the "Issuer") was known as Gryphon Digital Mining, Inc. On September 3, 2025, the Issuer and pre-merger American Bitcoin Corp. ("Historical ABTC") completed stock-for-stock merger transactions (the "Mergers") pursuant to which the Issuer acquired Historical ABTC and changed its name from Gryphon Digital Mining, Inc. to American Bitcoin Corp. Prior to the closing of the Mergers, the Issuer effected a 5-for-1 reverse stock split (the "Reverse Stock Split") of the Issuer's common stock ("Common Stock"), and the Common Stock was reclassified (the "Reclassification") as the Issuer's Class A common stock ("Class A Common Stock").

Prior to the Reverse Stock Split and Reclassification, Anchorage Lending CA, LLC ("Anchorage Lending") and Anchor Labs, Inc., a Delaware corporation ("Anchor Labs") owned 12,672,454 shares of Common Stock. Following the Reverse Stock Split and Reclassification, Anchorage Lending and Anchor Labs owned 2,534,491 shares of Class A Common Stock.

This transaction was executed in multiple trades at prices ranging from $7.94 to $8.91 per share. The price reported above reflects the weighted average price. The reporting persons hereby undertake to provide upon request to the SEC staff, the Issuer or a security holder of the Issuer, full information regarding the number of shares and prices at which the transaction was effected.

Anchorage Lending is wholly owned by Anchor Labs. Accordingly, Anchor Labs may be deemed to share beneficial ownership of the securities held of record by Anchorage Lending.

Prior to September 3, 2025, American Bitcoin Corp. (the "Issuer") was known as Gryphon Digital Mining, Inc. On September 3, 2025, the Issuer and pre-merger American Bitcoin Corp. ("Historical ABTC") completed stock-for-stock merger transactions (the "Mergers") pursuant to which the Issuer acquired Historical ABTC and changed its name from Gryphon Digital Mining, Inc. to American Bitcoin Corp. Prior to the closing of the Mergers, the Issuer effected a 5-for-1 reverse stock split (the "Reverse Stock Split") of the Issuer's common stock ("Common Stock"), and the Common Stock was reclassified (the "Reclassification") as the Issuer's Class A common stock ("Class A Common Stock").

Prior to the Reverse Stock Split and Reclassification, Anchorage Lending CA, LLC ("Anchorage Lending") and Anchor Labs, Inc., a Delaware corporation ("Anchor Labs") owned 12,672,454 shares of Common Stock. Following the Reverse Stock Split and Reclassification, Anchorage Lending and Anchor Labs owned 2,534,491 shares of Class A Common Stock.

This transaction was executed in multiple trades at prices ranging from $6.89 to $7.85 per share. The price reported above reflects the weighted average price. The reporting persons hereby undertake to provide upon request to the Securities and Exchange Commission ("SEC") staff, the Issuer or a security holder of the Issuer, full information regarding the number of shares and prices at which the transaction was effected.

Anchorage Lending is wholly owned by Anchor Labs. Accordingly, Anchor Labs may be deemed to share beneficial ownership of the securities held of record by Anchorage Lending.

Prior to September 3, 2025, American Bitcoin Corp. (the "Issuer") was known as Gryphon Digital Mining, Inc. On September 3, 2025, the Issuer and pre-merger American Bitcoin Corp. ("Historical ABTC") completed stock-for-stock merger transactions (the "Mergers") pursuant to which the Issuer acquired Historical ABTC and changed its name from Gryphon Digital Mining, Inc. to American Bitcoin Corp. Prior to the closing of the Mergers, the Issuer effected a 5-for-1 reverse stock split (the "Reverse Stock Split") of the Issuer's common stock ("Common Stock"), and the Common Stock was reclassified (the "Reclassification") as the Issuer's Class A common stock ("Class A Common Stock").

Prior to the Reverse Stock Split and Reclassification, Anchorage Lending CA, LLC ("Anchorage Lending") and Anchor Labs, Inc., a Delaware corporation ("Anchor Labs") owned 12,672,454 shares of Common Stock. Following the Reverse Stock Split and Reclassification, Anchorage Lending and Anchor Labs owned 2,534,491 shares of Class A Common Stock.

This transaction was executed in multiple trades at prices ranging from $8.99 to $9.48 per share. The price reported above reflects the weighted average price. The reporting persons hereby undertake to provide upon request to the SEC staff, the Issuer or a security holder of the Issuer, full information regarding the number of shares and prices at which the transaction was effected.

Anchorage Lending is wholly owned by Anchor Labs. Accordingly, Anchor Labs may be deemed to share beneficial ownership of the securities held of record by Anchorage Lending.

Shares were withheld by Issuer to cover the payment of withholding taxes in connection with the vesting and settlement of RSUs.

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions. The reporting person undertakes to provide to the registrant, any security holder of the registrant, 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.

Shares were withheld by Issuer to cover the payment of withholding taxes in connection with the vesting and settlement of RSUs.

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions. The reporting person undertakes to provide to the registrant, any security holder of the registrant, 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.

On June 24, 2025, Anchorage Lending exercised a warrant to purchase 2,000,000 shares of GRYP common stock for $0.55 a share. Anchorage Lending paid the exercise price on a cashless basis, resulting in GRYP's withholding of 1,110,102 of the warrant shares to pay the exercise price and issuing to Anchorage Lending the remaining 889,898 shares.

Anchorage Lending CA, LLC ("Anchorage Lending") is wholly owned by Anchor Labs, Inc., a Delaware corporation ("Anchor Labs"). Accordingly, Anchor Labs may be deemed to share beneficial ownership of the securities held of record by Anchorage Lending.

On June 24, 2025, Anchorage Lending exercised a warrant to purchase 3,530,198 shares of GRYP common stock for $0.01 a share. Anchorage Lending paid the exercise price on a cashless basis, resulting in GRYP's withholding of 35,626 of the warrant shares to pay the exercise price and issuing to Anchorage Lending the remaining 3,494,572 shares.

Anchorage Lending CA, LLC ("Anchorage Lending") is wholly owned by Anchor Labs, Inc., a Delaware corporation ("Anchor Labs"). Accordingly, Anchor Labs may be deemed to share beneficial ownership of the securities held of record by Anchorage Lending.

Anchorage Lending CA, LLC ("Anchorage Lending") is wholly owned by Anchor Labs, Inc., a Delaware corporation ("Anchor Labs"). Accordingly, Anchor Labs may be deemed to share beneficial ownership of the securities held of record by Anchorage Lending.

Anchorage Lending CA, LLC ("Anchorage Lending") is wholly owned by Anchor Labs, Inc., a Delaware corporation ("Anchor Labs"). Accordingly, Anchor Labs may be deemed to share beneficial ownership of the securities held of record by Anchorage Lending.

Anchorage Lending CA, LLC ("Anchorage Lending") is wholly owned by Anchor Labs, Inc., a Delaware corporation ("Anchor Labs"). Accordingly, Anchor Labs may be deemed to share beneficial ownership of the securities held of record by Anchorage Lending.

Anchorage Lending CA, LLC ("Anchorage Lending") is wholly owned by Anchor Labs, Inc., a Delaware corporation ("Anchor Labs"). Accordingly, Anchor Labs may be deemed to share beneficial ownership of the securities held of record by Anchorage Lending.

Represents shares of Common Stock of Gryphon Digital Mining, Inc. (the "Issuer") issuable upon settlement of Restricted Stock Units ("RSUs") that were forfeited as a result of the reporting person resigning as a director of the Issuer.

Represents shares of Common Stock of the Issuer issuable upon settlement of RSU.

The price reported in Column 4 is a weighted average price. These shares of Common Stock were sold in multiple transactions at prices ranging from $1.2906 to $1.3913 per share, inclusive. The Reporting Person undertakes to provide to 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 ranges set forth herein.

The price reported in Column 4 is a weighted average price. These shares of Common Stock were sold in multiple transactions at prices ranging from $1.3953 to $1.5098 per share, inclusive. The Reporting Person undertakes to provide to 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 ranges set forth herein.

The price reported in Column 4 is a weighted average price. These shares of Common Stock were sold in multiple transactions at prices ranging from $1.2502 to $1.50 per share, inclusive. The Reporting Person undertakes to provide to 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 ranges set forth herein.

Represents shares held by Vayo Ventures Ltd. Mr. Vaiopoulos is the Chief Executive Officer of Vayo Ventures Ltd. and has voting and investment control over the shares held by it. Mr. Vaiopoulos disclaims beneficial ownership of such shares except to the extent of his pecuniary interest therein.