Annette M. Alonzo - 25 Oct 2025 Form 4 Insider Report for CULLEN/FROST BANKERS, INC. (CFR)

Signature
/s/ Annette M. Alonzo, by Kirsten Irwin under POA
Issuer symbol
CFR
Transactions as of
25 Oct 2025
Net transactions value
-$97,765
Form type
4
Filing time
27 Oct 2025, 12:31:24 UTC
Previous filing
07 Feb 2025
Next filing
30 Oct 2025

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Alonzo Annette M GEVP Chief HR Officer 111 WEST HOUSTON STREET, SAN ANTONIO /s/ Annette M. Alonzo, by Kirsten Irwin under POA 27 Oct 2025 0001649840

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction CFR Common Stock, $0.01 par value Options Exercise $0 +1,992 +11% $0.000000 19,832 25 Oct 2025 Direct
transaction CFR Common Stock, $0.01 par value Tax liability $97,765 -783 -3.9% $124.86 19,049 25 Oct 2025 Direct
holding CFR Common Stock, $0.01 par value 15,634 25 Oct 2025 Through 401(k) Plan

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Underlying Class Amount Exercise Price Ownership Footnotes
transaction CFR Restricted Stock Units Options Exercise $0 -1,992 -100% $0.000000 0 25 Oct 2025 Common Stock 1,992 Direct F1, F2
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 Each restricted stock unit represents the right to receive one share of Cullen/Frost common stock.
F2 Cliff vested three years from grant date of 10/25/2022.