Transaction Details

Footnotes

Represents units earned with respect to a performance-based unit award granted on April 3, 2025. The issuer's compensation committee certified the above target attainment of the performance measures on March 24, 2026. These units remain subject to time-based vesting requirements. | Amount includes 5,281,431 shares of Class B common stock (the "Class B Common Stock"), which is not registered under the Securities Exchange Act of 1934, as amended. Holders of Class B Common Stock have identical rights to holders of common stock, except that holders of Class B Common Stock are entitled to 10 votes for each share held of record. Each share of Class B Common Stock is convertible at any time, at the option of the holder, into one share of common stock. | Amount also reflects (i) the shift from indirect to direct ownership of 1,088,617 shares of Class B Common Stock from the Edward W. Stack Grantor Retained Annuity Trust XI ("GRAT XI") on October 1, 2025 in satisfaction of an annuity payment thereunder, (ii) the shift from direct to indirect ownership of 2,000,000 shares of Class B Common Stock contributed by Mr. Stack to the Edward W. Stack Grantor Retained Annuity Trust XII ("GRAT XII") on May 29, 2025 and (iii) the shift from direct to indirect ownership of 1,000,000 shares of Class B Common Stock contributed by Mr. Stack to the Edward W. Stack Grantor Retained Annuity Trust XIII ("GRAT XIII") on May 29, 2025. | Amount includes 1,411,383 shares of Class B Common Stock, which is not registered under the Exchange Act. These shares are held by GRAT XI. | Amount includes 2,000,000 shares of Class B Common Stock, which is not registered under the Exchange Act. These shares are held by GRAT XII. | Amount includes 1,000,000 shares of Class B Common Stock, which is not registered under the Exchange Act. These shares are held by GRAT XIII.