v3.25.4

Consolidated Balance Sheets (Parenthetical) - USD ($)	Dec. 31, 2025	Dec. 31, 2024
Debt Securities, Held-to-maturity, Allowance for Credit Loss	$ (500,000)	$ (310,000)
Common Stock, Par or Stated Value Per Share	$ 0.01	$ 0.01
Common Stock, Shares Authorized	210,000,000	210,000,000
Common Stock, Shares, Issued	64,404,582	64,404,582
Treasury Stock, Common Shares	1,117,394	207,150
Series B Preferred Stock [Member]
Preferred Stock, Par or Stated Value Per Share	$ 0.01	$ 0.01
Preferred Stock, Shares Authorized	10,000,000	10,000,000
Preferred Stock, Shares Issued	150,000	150,000
Preferred Stock, Liquidation Preference, Value	$ 1,000	$ 1,000

Face amount or stated value per share of common stock.

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The maximum number of common shares permitted to be issued by an entity's charter and bylaws.

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Total number of common shares of an entity that have been sold or granted to shareholders (includes common shares that were issued, repurchased and remain in the treasury). These shares represent capital invested by the firm's shareholders and owners, and may be all or only a portion of the number of shares authorized. Shares issued include shares outstanding and shares held in the treasury.

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Amount of allowance for credit loss for debt security measured at amortized cost (held-to-maturity).

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Value of the difference between preference in liquidation and the par or stated values of the preferred shares.

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Face amount or stated value per share of preferred stock nonredeemable or redeemable solely at the option of the issuer.

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Number of shares issued for nonredeemable preferred shares and preferred shares redeemable solely at option of issuer. Includes, but is not limited to, preferred shares issued, repurchased, and held as treasury shares. Excludes preferred shares classified as debt.

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CULLEN/FROST BANKERS, INC. 10-K