Item 4 of the Schedule 13D is hereby amended and supplemented by the following: On March 17, 2026, the hedging period related to the first quarterly calculation period for the Forward Transactions ended, and the sales price for such quarterly calculation period was determined to be $3.51 per share. On March 18, 2026, the shares pledged by the Stockholders in respect of such quarterly calculation period were released from the pledge and delivered to Dealer in settlement of such quarterly calculation period.

Item 5(a)-(c) of the Schedule 13D is hereby amended and restated as follows: The information set forth in the cover pages of this Schedule 13D are hereby incorporated by reference into this Item 5. Calculations of the percentage of the shares of Class A Common Stock beneficially owned is based on 129,815,720 shares of Class A Common Stock outstanding as of February 27, 2026, as set forth in the Annual Report on Form 10-K filed by the Issuer on March 16, 2026. As of the date hereof, (i) BX Buzz ML-1 Holdco L.P. directly holds 725,373 shares of Class A Common Stock, (ii) BX Buzz ML-2 Holdco L.P. directly holds 9,980,754 shares of Class A Common Stock, (iii) BX Buzz ML-3 Holdco L.P. directly holds 1,620,290 shares of Class A Common Stock, (iv) BX Buzz ML-4 Holdco L.P. directly holds 4,323,608 shares of Class A Common Stock, (v) BX Buzz ML-5 Holdco L.P. directly holds 13,115,843 shares of Class A Common Stock, (vi) BX Buzz ML-6 Holdco L.P. directly holds 118,296 shares of Class A Common Stock, and (vii) BX Buzz ML-7 Holdco L.P. directly holds 25,832 shares of Class A Common Stock. In general, each share of Class A Common Stock entitles its holder to one vote on all matters on which Issuer stockholders are entitled to vote generally. Shares of Class B Common Stock had no economic rights but each share generally entitled each holder, without regard to the number of shares of Class B Common Stock held by such holder, to a number of votes that is equal to the aggregate number of Common Units held by such holder on all matters on which Issuer stockholders are entitled to vote generally. Holders of shares of Class B Common Stock vote together with holders of Class A Common Stock as a single class on all matters on which stockholders are entitled to vote generally, except as otherwise required by law. Notwithstanding the foregoing, unless they elect otherwise, each of the Blackstone Funds is entitled to outsized voting rights as follows: until the High Vote Termination Date, each share of Class A Common Stock held by them entitles such person to ten votes. "High Vote Termination Date" means the earlier to occur of (i) seven years from the closing of the Issuer's initial public offering and (ii) the date the parties to the Stockholders Agreement cease to own in the aggregate 7.5% of the outstanding shares of Class A Common Stock, assuming exchange of all Common Units. BX Buzz ML-1 GP LLC is the general partner of BX Buzz ML-1 Holdco L.P. BX Buzz ML-2 GP LLC is the general partner of BX Buzz ML-2 Holdco L.P. BX Buzz ML-3 GP LLC is the general partner of BX Buzz ML-3 Holdco L.P. BX Buzz ML-4 GP LLC is the general partner of BX Buzz ML-4 Holdco L.P. BX Buzz ML-5 GP LLC is the general partner of BX Buzz ML-5 Holdco L.P. BX Buzz ML-6 GP LLC is the general partner of BX Buzz ML-6 Holdco L.P. BX Buzz ML-7 GP LLC is the general partner of BX Buzz ML-7 Holdco L.P. BXG Buzz Holdings L.P. is the sole limited partner of BX Buzz ML-1 Holdco L.P. and the sole member of BX Buzz ML-1 GP LLC. BCP Buzz Holdings L.P. is the sole limited partner of BX Buzz ML-2 Holdco L.P. and the sole member of BX Buzz ML-2 GP LLC. BSOF Buzz Aggregator LLC is the sole limited partner of BX Buzz ML-3 Holdco L.P. and the sole member of BX Buzz ML-3 GP LLC. BTO Buzz Holdings II L.P. is the sole limited partner of BX Buzz ML-4 Holdco L.P. and the sole member of BX Buzz ML-4 GP LLC. Blackstone Buzz Holdings L.P. is the sole limited partner of BX Buzz ML-5 Holdco L.P. and the sole member of BX Buzz ML-5 GP LLC. Blackstone Tactical Opportunities Fund - FD L.P. is the sole limited partner of BX Buzz ML-6 Holdco L.P. and the sole member of BX Buzz ML-6 GP LLC. Blackstone Family Investment Partnership Growth - ESC L.P. is the sole limited partner of BX Buzz ML-7 Holdco L.P. and the sole member of BX Buzz ML-7 GP LLC. BTO Holdings Manager-NQ L.L.C. is the general partner of Blackstone Buzz Holdings L.P. Blackstone Tactical Opportunities Associates-NQ L.L.C. is the managing member of BTO Holdings Manager-NQ L.L.C. BTOA-NQ L.L.C. is the sole member of Blackstone Tactical Opportunities Associates-NQ L.L.C. Blackstone Tactical Opportunities Associates III-NQ L.P. is the general partner of Blackstone Tactical Opportunities Fund-FD L.P. BTO DE GP-NQ L.L.C. is the general partner of Blackstone Tactical Opportunities Associates III-NQ L.P. BXG Side-by-Side GP L.L.C. is the general partner of Blackstone Family Investment Partnership-Growth ESC L.P. Blackstone Holdings II L.P. is the sole member of BXG Side-by-Side GP L.L.C. BXG Holdings Manager L.L.C. is the general partner of BXG Buzz Holdings L.P. Blackstone Growth Associates L.P. is the managing member of BXG Holdings Manager L.L.C. BXGA L.L.C. is the general partner of Blackstone Growth Associates L.P. Blackstone Strategic Opportunity Associates L.L.C. is the managing member of BSOF Buzz Aggregator L.L.C. Blackstone Holdings II L.P. is the sole member of Blackstone Strategic Opportunity Associates L.L.C. BCP VII Holdings Manager-NQ L.L.C. is the general partner of BCP Buzz Holdings L.P. Blackstone Management Associates VII NQ L.L.C. is the managing member of BCP VII Holdings Manager-NQ L.L.C. BMA VII NQ L.L.C. is the managing member of Blackstone Management Associates VII NQ L.L.C. Blackstone Holdings II L.P. is the managing member of each of BTOA-NQ L.L.C., BTO DE GP-NQ L.L.C., BXGA L.L.C., and BMA VII NQ L.L.C. Blackstone Holdings I/II GP L.L.C. is the general partner of Blackstone Holdings II L.P. BTO Holdings Manager L.L.C. is the general partner of BTO Buzz Holdings II L.P. Blackstone Tactical Opportunities Associates L.L.C. is the managing member of BTO Holdings Manager L.L.C. BTOA L.L.C. is the managing member of Blackstone Tactical Opportunities Associates L.L.C. Blackstone Holdings III L.P. is the managing member of BTOA L.L.C. Blackstone Holdings III GP L.P. is the general partner of Blackstone Holdings III L.P. Blackstone Holdings III GP Management L.L.C. is the general partner of Blackstone Holdings III GP L.P. Blackstone Inc. is the sole member of Blackstone Holdings I/II GP L.L.C. and Blackstone Holdings III GP Management L.L.C. The sole holder of the Series II preferred stock of Blackstone Inc. is Blackstone Group Management L.L.C. Blackstone Group Management L.L.C. is wholly-owned by Blackstone's senior managing directors and controlled by its founder, Stephen A. Schwarzman. Neither the filing of this Schedule 13D nor any of its contents shall be deemed to constitute an admission that any Reporting Person is the beneficial owner of the Class A Common Stock referred to herein for purposes of Section 13(d) of the Securities Exchange Act of 1934, as amended, or for any other purpose and each of the Reporting Persons expressly disclaims beneficial ownership of such shares of Class A Common Stock. Any beneficial ownership of Class A Common Stock by any of the persons listed on Schedule I is set forth on Schedule I attached to Amendment No. 7. By virtue of the Stockholders Agreement, the Reporting Persons and Whitney Wolfe Herd and her affiliates are deemed to be members of a group for purposes of Section 13(d) of the Securities Exchange Act of 1934, as amended. Ms. Wolfe Herd and her affiliates file a separate Schedule 13D to report the Class A Common Stock that they may be deemed to beneficially own. Based in part on information provided by the Issuer, collectively, the Reporting Persons and Ms. Wolfe Herd and her affiliates may be deemed to beneficially own in the aggregate 52,163,209 shares of Class A Common Stock, representing 34.5% of the Class A Common Stock (which does not include any shares related to Incentive Units of Buzz Holdings L.P. as no Common Units would be deliverable if Ms. Wolfe Herd were to exercise such units as of the date hereof (assuming the $4.1561 volume-weighted average price of the Class A Common Stock on March 19, 2026)).

The aggregate number and percentage of the Class A Common Stock beneficially owned by each Reporting Person and, for each Reporting Person, 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 Schedule 13D and are incorporated herein by reference.

Except as set forth in this Amendment No. 10 and below, none of the Reporting Persons has effected any transaction in shares of Class A Common Stock during the past 60 days. In connection with the settlement of the first quarterly calculation period on March 18, 2026 of the Forward Transactions, the following Reporting Persons sold the following shares of Class A Common Stock at a price of $3.51 per share: (i) BX Buzz ML-1 Holdco L.P. sold 181,344 shares of Class A Common Stock, (ii) BX Buzz ML-2 Holdco L.P. sold 2,495,189 shares of Class A Common Stock, (iii) BX Buzz ML-3 Holdco L.P. sold 405,073 shares of Class A Common Stock, (iv) BX Buzz ML-4 Holdco L.P. sold 1,080,903 shares of Class A Common Stock, (v) BX Buzz ML 5 Holdco L.P. sold 3,278,961 shares of Class A Common Stock,, (vi) BX Buzz ML-6 Holdco L.P. sold 29,575 shares of Class A Common Stock and (vii) BX Buzz ML-7 Holdco L.P. sold 6,459 shares of Class A Common Stock.

Item 6 of the Schedule 13D is hereby amended and supplemented as follows: The information set forth in Items 3, 4 and 5 of the Schedule 13D is hereby incorporated by reference into this Item 6. The disclosure under caption "Margin Loan Facility" in Item 6 of the Schedule 13D is hereby amended and supplemented as follows: Margin Loan Facility As of March 19, 2026, a total of 29,909,996 shares of Class A Common Stock are currently pledged. As of March 19, 2026, the outstanding principal loan amount under the Margin Loan Agreements is approximately $55,242,515.13.

Item 7 of the Schedule 13D is hereby amended and supplemented as follows: Exhibit 99.1 Signatures