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SUBSEQUENT EVENTS: | 6 Months Ended
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Jun. 30, 2026
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SUBSEQUENT EVENTS: | ​ ​ NOTE 16 — SUBSEQUENT EVENTS: ​ Dividends: ​ On July 16, 2026, the Board of Directors authorized a quarterly cash dividend of $1.10 per share of common stock and a stock dividend of 0.0120 shares of common stock per share of common stock, payable on August 27, 2026 to shareholders of record at the close of business on August 11, 2026. ​ In lieu of fractional shares, cash will be distributed to each shareholder who would otherwise have been entitled to receive a fractional share, based on a share price of $177.32, which is the average of the high and low share price on July 16, 2026. ​ Solidarity contribution for social and development programs in Sonora, Mexico: ​ On July 24, 2026, the Company contributed 500 million Mexican pesos (approximately $29 million) to SEMARNAT as part of the Solidarity contribution for social and development programs in Sonora. ​

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- Definition The entire disclosure for significant events or transactions that occurred after the balance sheet date through the date the financial statements were issued or the date the financial statements were available to be issued. Examples include: the sale of a capital stock issue, purchase of a business, settlement of litigation, catastrophic loss, significant foreign exchange rate changes, loans to insiders or affiliates, and transactions not in the ordinary course of business. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 855 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org/855/tableOfContent Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 855 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147483399/855-10-50-2 + Details
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