Steinberg David sold ZETA

Footnotes

Each PSU represents a contingent right to receive one share of the Issuer's Class A Common Stock.; On April 3, 2024, the reporting person was granted an award of performance-based restricted stock units (the "2024 PSUs"), which are eligible to be earned in the form of restricted stock units based on the volume-weighted average closing price per share of the Issuer's Class A Common Stock during the final 20 consecutive trading days of each fiscal quarter beginning with the fourth fiscal quarter of 2024 and ending with, and including, the fourth fiscal quarter of 2028. Any unearned portion of the PSUs will expire on January 1, 2029. On October 22, 2026, the Issuer determined that the performance conditions were met at the maximum level with respect to the 2024 PSUs, resulting in these securities being earned, with 33.33% of such securities vesting on such date of determination and the remainder vesting in equal installments every three months thereafter, subject to the reporting person's continued service with the Issuer through each applicable vesting date.; As the performance conditions were met at the maximum level with respect to the 2024 PSUs, no additional 2024 PSUs may be earned.; Securities held directly by ACI Investment Partners, LLC ("ACI"). Mr. Steinberg is the manager of ACI. Mr. Steinberg disclaims beneficial ownership of the shares held directly by ACI except to the extent of his pecuniary interest therein, if any.