X0407 4 2023-04-19 0 0001856031 Vivid Seats Inc. SEAT 0001744219 Eldridge Industries, LLC 600 STEAMBOAT ROAD GREENWICH CT 06830 0 0 1 0 0001744269 Boehly Todd L 600 STEAMBOAT ROAD GREENWICH CT 06830 0 0 1 0 0001900094 POST PORTFOLIO TRUST, LLC 600 STEAMBOAT ROAD GREENWICH CT 06830 0 0 1 0 0001817070 Horizon Sponsor, LLC 600 STEAMBOAT ROAD GREENWICH CT 06830 0 0 1 0 0001927675 SBT Investors LLC 600 STEAMBOAT ROAD GREENWICH CT 06830 0 0 1 0 0 Class A Common Stock 2023-04-19 4 C 0 2500000 9.77 A 54281557 I See Footnotes Options (Obligation to Purchase) 9.77 2023-04-19 4 C 0 2500000 0.00 D 2023-04-19 2023-04-19 Class A Common Stock 2500000 0 D The reported securities are held as follows: (i) Horizon Sponsor, LLC ("Sponsor") directly holds 16,789,999 of the reported shares of Class A Common Stock ("Class A Shares"), (ii) Post Portfolio Trust, LLC ("Post Portfolio") directly holds 24,552,096 Class A Shares, (iii) SBT Investors, LLC ("SBT") directly holds 10,101,009 Class A Shares and indirectly holds 333,564 Class A Shares through EEH 2017, LLC, (iv) Todd L. Boehly directly holds 4,889 Class A Shares and (v) Parkville Portfolio Trust, LLC ("Parkville"), an indirect subsidiary of Eldridge Industries, LLC ("Eldridge") directly holds 2,500,000 Class A Shares . Each of the Sponsor, Post Portfolio and Parkville is indirectly controlled by Eldridge. Todd L. Boehly is the controlling member of SBT and indirect controlling member of Eldridge and, in such capacities, may be deemed to have voting and dispositive power over the reported securities. Each of the foregoing persons disclaims beneficial ownership except to the extent of such person's pecuniary interest therein. Solely for purposes of Section 16 of the Securities and Exchange Act of 1934, Sponsor, Post Portfolio, and Eldridge may be deemed directors by deputization with respect to the Issuer. /s/ Eldridge Industries, LLC, By: /s/ Todd L. Boehly, Authorized Signatory 2023-04-21 /s/ Todd L. Boehly 2023-04-21 /s/ Horizon Sponsor LLC, By: Todd L. Boehly, Chief Executive Officer 2023-04-21 /s/ Post Portfolio Trust, LLC, By: Todd L. Boehly, Chief Executive Officer 2023-04-21 /s/ SBT Investors LLC, By: Todd L. Boehly, Authorized Signatory 2023-04-21