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| Stockholder's equity | Shareholders’ equity Stock repurchases The following table summarizes the Company's repurchases of its common stock during the years ended December 31, 2025, 2024 and 2023:
(1)Includes commissions and applicable excise tax. The excise tax is recorded as part of the cost basis of treasury shares repurchased and, as such, is included in stockholders’ equity. (2)Average price paid per share excludes commissions and excise tax. The Company repurchased 1,773 shares of its common stock for $216,581 at an average price paid of $122.08 per share subsequent to December 31, 2025 through February 6, 2026, inclusive of the shares repurchased from Berkshire Hathaway Inc. as discussed below. As of September 5, 2024, the Company's board of directors (the Board) authorized a share repurchase plan of $2,000,000. Effective August 21, 2025, the Board increased the authorization under the existing share repurchase plan by $2,000,000 in additional repurchase authority. These authorizations allow the Company to make purchases from time to time in the open market or in privately negotiated transactions, including without limitation, through accelerated share repurchase transactions, derivative transactions, tender offers, Rule 10b5-1 plans or any combination of the foregoing, depending upon market conditions and other considerations. As of February 6, 2026, the Company has a total of $1,941,688, excluding excise taxes, available under the current authorization for additional share repurchases. Although this share repurchase authorization does not have an expiration date, the Company remains subject to share repurchase limitations, including under the terms of its senior secured credit facilities. The Company retired all shares held in its treasury effective as of December 31, 2025. Berkshire share repurchase agreement On April 30, 2024, the Company entered into an agreement (the share repurchase agreement) with Berkshire Hathaway Inc. on behalf of itself and its affiliates (collectively, Berkshire). Under the share repurchase agreement, at any time Berkshire beneficially owns at least 45.0% of the issued and outstanding common stock of the Company in the aggregate, the Company will repurchase from Berkshire, and Berkshire will sell to the Company, on a quarterly basis, a number of shares of common stock sufficient to return Berkshire’s aggregate beneficial ownership to 45.0% of the Company's issued and outstanding common stock. The per share price the Company will pay Berkshire for any such share repurchase will be the volume-weighted average price per share paid by the Company for any shares of common stock repurchased by the Company from public stockholders pursuant to the Company’s share repurchase program during the applicable repurchase period. Under this agreement, repurchases of common stock by the Company from Berkshire will occur on the date that is two business days prior to the date of the Company’s regular quarterly or annual investor call to publicly report earnings; however, if at any time the Company determines that Berkshire beneficially owns or will beneficially own shares of common stock representing more than 49.5% of the issued and outstanding common stock in the aggregate, such determination will trigger immediate share repurchases under this agreement. Pursuant to the April 30, 2024 share repurchase agreement with Berkshire Hathaway Inc. on behalf of itself and its affiliates, the Company had a repurchase obligation at December 31, 2025 to purchase shares from Berkshire for $199,940 in the aggregate, recorded as a payable and classified as due to related party on the Company's consolidated balance sheet. On January 29, 2026, the Company settled the Berkshire repurchase obligation in total for 1,658 shares of common stock for $199,940, at an average price paid of $120.56 per share. Berkshire standstill agreement Berkshire remains subject to a standstill agreement with the Company, as amended and restated as of February 9, 2022 (the standstill agreement). The standstill agreement currently restricts Berkshire’s actions with respect to acquiring additional shares of the Company’s common stock, and for any matter presented to Company stockholders, the standstill agreement requires Berkshire to vote any shares it beneficially holds in excess of 40% of the then-outstanding voting stock of the Company in accordance with the recommendation of the Board of Directors of the Company (Board). The standstill agreement also restricts Berkshire from taking certain actions, including, among other things, actions relating to stockholder proposals and actions seeking to control or influence the Board, management or policies of the Company. The standstill agreement provisions vary depending on Berkshire’s ownership levels and in the event of certain specified leadership changes at Berkshire. The standstill agreement may be terminated by Berkshire at any time it ceases to beneficially own more than 15% of the Company's then-outstanding common stock, and terminates automatically if the Company enters into or publicly announces a plan to enter into a definitive agreement concerning a transaction involving all or a controlling portion of the Company's equity securities or all, or substantially all, of the Company's assets. Charter documents & Delaware law The Company’s charter documents include provisions that may deter hostile takeovers, delay or prevent changes of control or changes in management, or limit the ability of stockholders to approve transactions that they may otherwise determine to be in their best interests. These include provisions prohibiting stockholders from acting by written consent, requiring 90 days advance notice for director nominations and stockholder proposals and granting the Company's Board of Directors the authority to issue up to 5,000 shares of preferred stock and to determine the rights and preferences of the preferred stock without the need for further stockholder approval. The Company is also subject to Section 203 of the Delaware General Corporation Law which, subject to exceptions, prohibits the Company from engaging in any business combinations with any interested stockholder, as defined in that section, for a period of three years following the date on which that stockholder became an interested stockholder. The provisions described above may discourage, delay or prevent an acquisition of the Company at a price that stockholders may find attractive.
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