Amendment: SEC Form SCHEDULE 13D/A filed by Bakkt Holdings Inc.

Item 3 of the Amended Schedule 13D is hereby supplemented and amended to add the information contained in Item 6 of this Amendment, which is incorporated herein by reference.

Item 4 of the Amended Schedule 13D is hereby supplemented and amended to add the information contained in Item 6 of this Amendment, which is incorporated herein by reference.

The percentage of beneficial ownership in this Amendment is based on: (i) with respect to the total amount of securities issued and outstanding, an aggregate of 6,974,732 shares of Class A Common Stock and 7,177,076 shares of Class V Common Stock outstanding as of July 11, 2025, as reported in the Issuer's Definitive Proxy Statement on Schedule 14A filed with the Securities and Exchange Commission ("SEC") on July 16, 2025, as adjusted pursuant to Rule 13d-3(d)(1)(i) under the Exchange Act to include the 461,360 shares of Class A Common Stock (the "Warrant Shares") underlying the Acquired Warrants (as defined in Item 6 of the Amended Schedule 13D), and (ii) with respect to the securities beneficially owned by the Reporting Persons, 649,934 shares of Class A Common Stock, the 461,360 Warrant Shares and 6,803,178 shares of Class A Common Stock underlying the Paired Interests (consisting of 6,803,178 Bakkt Opco Common Units and 6,803,178 shares of Class V Common Stock) beneficially owned by the Reporting Persons as of the date hereof. The aggregate number and percentage of shares of Class A Common Stock and Class V Common Stock beneficially owned by the Reporting Persons, the number of shares as to which there is sole power to vote or to direct the vote, shared power to vote or to direct the vote, sole power to dispose or to direct the disposition, or shared power to dispose or to direct the disposition, are set forth on rows 7 through 11 and row 13 of the cover pages of this Amendment and are incorporated herein by reference. Pursuant to the terms of the A&R Exchange Agreement (as defined in Item 6 of Amendment No. 1), Bakkt Opco Common Units, when coupled with an equivalent number of shares of Class V Common Stock, may be exchanged at the discretion of the holder for shares of Class A Common Stock on a one-for-one basis (subject to adjustment as set forth in the A&R Exchange Agreement), or, at the option of the Issuer, cash, subject to the following exceptions: (i) no holder of Bakkt Opco Common Units may exchange less than 1,000 Bakkt Opco Common Units in any single exchange unless exchanging all of their Bakkt Opco Common Units; and (ii) such exchange can only occur (a) upon a Permitted Exchange Event (as defined in the A&R Exchange Agreement) or (b) on (1) the last trading day of the second week of the first month of each quarter, (2) the last trading day of the first month of each quarter, (3) the third full trading day occurring after the Issuer publicly announces its results for a quarter and (4) the last trading day of the second month of each quarter. Pursuant to the Voting Agreement (as described in Item 6 of the Initial Schedule 13D), as long as ICEH and its affiliates beneficially own 50% or more of the total voting power of the shares of Common Stock issued and outstanding and entitled to vote at any time, a proxy designated by the Board will vote the Excess Shares (defined in Item 6 of the Initial Schedule 13D) beneficially owned by the Reporting Persons on any Stockholder Matter (as defined in Item 6 of the Initial Schedule 13D) in the same percentages for and against such Stockholder Matter as votes were cast for and against such Stockholder Matter by all stockholders of the Issuer other than ICEH and its affiliates. The Voting Agreement does not apply to the voting of shares of Common Stock beneficially owned by ICEH and its affiliates that are not Excess Shares. The Voting Agreement also does not apply to the giving or withholding of consent or approval in respect of any matter requiring the approval of the Required Interest (as defined in Item 6 of the Initial Schedule 13D) of Bakkt Opco equity holders under the Surviving Company LLC Agreement. The Voting Agreement will terminate if the voting power represented by the shares of Common Stock beneficially owned by ICEH and its affiliates falls below 50% of the total voting power of the shares of Common Stock issued and outstanding and entitled to vote at any time. The Warrant Shares will not have voting power unless, and to the extent, ICEH exercises its right to acquire Warrant Shares in accordance with the terms of the Acquired Warrants and such shares become issued and outstanding. To the best knowledge of the Reporting Persons, the following persons beneficially own or may be deemed to beneficially own the shares of Class A Common Stock, Class V Common Stock and Bakkt Opco Common Units set forth below: o Hon. Sharon Y. Bowen, Director, ICE, beneficially owns 20,118 shares of Class A Common Stock, 926 shares of Class V Common Stock and 926 Bakkt Opco Common Units. o Thomas E. Noonan, Director, ICE, beneficially owns 529 shares of Class V Common Stock and 529 Bakkt Opco Common Units. o Jeffrey C. Sprecher, Director (Chairman) and Chief Executive Officer, ICE, may be deemed to beneficially own 146,366 shares of Class V Common Stock and 146,366 Bakkt Opco Common Units, which shares and units are beneficially owned by his spouse through her holdings of vested incentive units in Bakkt Management. Mr. Sprecher disclaims beneficial ownership of the shares and units held indirectly by his spouse. The Reporting Persons specifically disclaim beneficial ownership over such shares and units held by the persons listed above. Except for the shares of Class A Common Stock beneficially owned by Ms. Bowen, the beneficial ownership information set forth above is with respect to shares of Class V Common Stock and Bakkt Opco Common Units indirectly acquired by Ms. Bowen, Mr. Noonan, and Mr. Sprecher's spouse in connection with the Closing in respect of incentive units held by such individuals under the Bakkt equity incentive plan in effect prior to the Closing and held directly by Bakkt Management LLC ("Bakkt Management").

Item 5(a) of this Statement is incorporated herein by reference. Pursuant to the Share Increase Voting Support Agreement (as defined in Item 6 of this Amendment), ICEH agreed to vote all of the shares of Common Stock owned by ICEH in favor of the Share Increase Amendment (as defined in Item 6 of this Amendment), subject to the limitations of the Voting Agreement in respect of Excess Shares.

This Amendment is being filed to report the entry by ICEH into the Share Increase Voting Support Agreement (as defined in Item 6 of this Amendment), and not in connection with any acquisition or disposition of any shares of Common Stock by the Reporting Persons. The Reporting Persons have not effected any transactions in Class A Common Stock or Class V Common Stock during the past 60 days.

To the best knowledge of the Reporting Persons, no one other than the Reporting Persons has the right to receive or the power to direct the receipt of dividends from, or the proceeds from the sale of, the securities reported herein.

Not applicable.

Item 6 of the Amended Schedule 13D is hereby further supplemented and amended to add the following information: Share Increase Voting Support Agreement. On July 16, 2025, the Issuer filed a definitive proxy statement in connection with a special meeting of the stockholders of the Issuer to be held on August 6, 2025 (the "Special Meeting") to consider and vote upon a proposal to approve an amendment to the Issuer's Certificate of Incorporation, dated as of October 15, 2021, as amended on April 24, 2024 and June 17, 2025, to increase the number of authorized shares of Class A Common Stock from 60,000 shares to 560,000 shares (the "Share Increase Amendment") and, in connection therewith, ICEH entered into a Voting Support Agreement (the "Share Increase Voting Support Agreement") with the Issuer on July 15, 2025. Pursuant to the Share Increase Voting Support Agreement (i) ICEH agreed, among other things, to vote all of the shares of Common Stock owned by ICEH in favor of the Share Increase Amendment at the Special Meeting, subject to the limitations of the Voting Agreement in respect of Excess Shares, and (ii) the Issuer agreed that, within 3 business days of consummating any debt or equity transaction pursuant to which the Issuer receives net proceeds of at least $70 million, the Issuer will (a) repay in full in cash any outstanding obligations under that certain Revolving Credit Agreement, dated as of August 12, 2024 (the "Credit Agreement"), by and among the Issuer, Bakkt Opco, the subsidiaries of the Issuer from time to time party thereto as guarantors, and ICEH, as the lender, and cause the Borrower (as defined in the Credit Agreement) to terminate the commitments thereunder, and (b) negotiate in good faith with ICEH the terms of a non-exclusive agreement (but will not be required to enter into such agreement) pursuant to which an affiliate of ICEH will provide custody services to the Issuer in respect of Bitcoin or other digital assets acquired by the Issuer and its affiliates in accordance with the Issuer's updated investment policy and broader treasury and corporate strategy. The foregoing description of the Share Increase Voting Support Agreement is qualified in its entirety by reference to the full text of the Share Increase Voting Support Agreement, which is filed as Exhibit 99.22 and is incorporated herein by reference.

Exhibit 99.1* Joint Filing Agreement, dated as of October 21, 2021, by and among the Reporting Persons (incorporated by reference to Exhibit 99.1 to the Schedule 13D filed by the Reporting Persons with the SEC on October 21, 2021). https://www.sec.gov/Archives/edgar/data/1571949/000119312521304172/d367825dex991.htm Exhibit 99.2 Agreement and Plan of Merger (incorporated by reference to Exhibit 2.1 to the Issuer's Current Report on Form 8-K filed on January 11, 2021). https://www.sec.gov/Archives/edgar/data/1820302/000119312521005832/d913171dex21.htm Exhibit 99.3 Amendment to Agreement and Plan of Merger (incorporated by reference to Exhibit 2.1 to the Issuer's Current Report on Form 8-K filed on March 31, 2021). https://www.sec.gov/Archives/edgar/data/1820302/000119312521101249/d107545dex21.htm Exhibit 99.4 Amendment to Agreement and Plan of Merger (incorporated by reference to Exhibit 2.1 to the Issuer's Current Report on Form 8-K filed on September 30, 2021). https://www.sec.gov/Archives/edgar/data/1820302/000119312521286927/d204551dex21.htm Exhibit 99.5 Certificate of Incorporation of the Issuer (incorporated by reference to Exhibit 3.1 to the Issuer's Current Report on Form 8-K filed on October 21, 2021). https://www.sec.gov/Archives/edgar/data/1820302/000119312521303985/d219325dex31.htm Exhibit 99.6 Exchange Agreement (incorporated by reference to Exhibit 10.4 to the Issuer's Current Report on Form 8-K filed on October 21, 2021). https://www.sec.gov/Archives/edgar/data/1820302/000119312521303985/d219325dex104.htm Exhibit 99.7 Amended and Restated Limited Liability Company Agreement (incorporated by reference to Exhibit 4.3 to the Issuer's Current Report on Form 8-K filed on October 21, 2021). https://www.sec.gov/Archives/edgar/data/1820302/000119312521303985/d219325dex43.htm Exhibit 99.8 Voting Agreement (incorporated by reference to Exhibit 10.3 to the Issuer's Current Report on Form 8-K filed on October 21, 2021). https://www.sec.gov/Archives/edgar/data/1820302/000119312521303985/d219325dex103.htm Exhibit 99.9 Stockholders Agreement (incorporated by reference to Exhibit 10.2 to the Issuer's Current Report on Form 8-K filed on October 21, 2021). https://www.sec.gov/Archives/edgar/data/1820302/000119312521303985/d219325dex102.htm Exhibit 99.10 Registration Rights Agreement (incorporated by reference to Exhibit 10.1 to the Issuer's Current Report on Form 8-K filed on October 21, 2021). https://www.sec.gov/Archives/edgar/data/1820302/000119312521303985/d219325dex101.htm Exhibit 99.11 Tax Receivable Agreement (incorporated by reference to Exhibit 10.5 to the Issuer's Current Report on Form 8-K filed on October 21, 2021). https://www.sec.gov/Archives/edgar/data/1820302/000119312521303985/d219325dex105.htm Exhibit 99.12* Amended and Restated Subscription Agreement. https://www.sec.gov/Archives/edgar/data/1571949/000119312521304172/d367825dex9912.htm Exhibit 99.13 Cooperation Agreement (incorporated by reference to Exhibit 10.6 to the Issuer's Current Report on Form 8-K filed on October 21, 2021). https://www.sec.gov/Archives/edgar/data/1820302/000119312521303985/d219325dex106.htm Exhibit 99.14 Amended and Restated Exchange Agreement (incorporated by reference to Exhibit 10.1 to the Issuer's Current Report on Form 8-K filed on May 4, 2022). https://www.sec.gov/Archives/edgar/data/1820302/000182030222000015/a101amendedandrestatedexch.htm Exhibit 99.15* Securities Purchase Agreement (incorporated by reference to Exhibit 99.15 to Schedule 13D/A filed by the Reporting Persons with the SEC on March 4, 2024). https://www.sec.gov/Archives/edgar/data/1571949/000094787124000253/ss3098627_ex9915.htm Exhibit 99.16* Voting Support Agreement (incorporated by reference to Exhibit 99.16 to Schedule 13D/A filed by the Reporting Persons with the SEC on March 4, 2024). https://www.sec.gov/Archives/edgar/data/1571949/000094787124000253/ss3098627_ex9916.htm Exhibit 99.17* Class 1 Warrant issued by the Issuer on March 4, 2024 (incorporated by reference to Exhibit 99.17 to Schedule 13D/A filed by the Reporting Persons with the SEC on March 4, 2024). https://www.sec.gov/Archives/edgar/data/1571949/000094787124000253/ss3098627_ex9917.htm Exhibit 99.18* Class 2 Warrant issued by the Issuer on March 4, 2024 (incorporated by reference to Exhibit 99.18 to Schedule 13D/A filed by the Reporting Persons with the SEC on March 4, 2024). https://www.sec.gov/Archives/edgar/data/1571949/000094787124000253/ss3098627_ex9918.htm Exhibit 99.19* Class 1 Warrant issued by the Issuer on April 25, 2024. https://www.sec.gov/Archives/edgar/data/1820302/000094787124000420/ss3319225_ex9919.htm Exhibit 99.20* Class 2 Warrant issued by the Issuer on April 25, 2024. https://www.sec.gov/Archives/edgar/data/1820302/000094787124000420/ss3319225_ex9920.htm Exhibit 99.21 First Amendment to the Third Amended and Restated Limited Liability Company Agreement (incorporated by reference to Exhibit 4.1 to the Issuer's Current Report on Form 8-K filed on April 29, 2024). https://www.sec.gov/Archives/edgar/data/1820302/000182030224000080/ex41firstamendmentto3rdame.htm Exhibit 99.22 Share Increase Voting Support Agreement * Previously filed