New Listings from Cullen/Frost Bankers, Inc.

Dear Member,

TXSE welcomes the launch of the following securities from Cullen/Frost Bankers, Inc. on November 12, 2026. Trading will begin at 8:00 a.m. ET.

Please note this is a transfer from NYSE. TXSE-listed securities will be quoted and printed to the SIAC Tape B data feed.

Members should review the resources and operational-readiness items below in advance of the transfers. A complete list of upcoming TXSE listings is available on the TXSE Listings Calendar.

TXSE Enhanced Liquidity Provider (ELP) Program

Cullen/Frost Bankers, Inc. common stock (CFR) will be enrolled in the TXSE Enhanced Liquidity Program as a Tier II security effective November 12, 2026, its first day of trading on TXSE. As a Tier II security, CFR’s monthly ELP pools are $5,000 for the Quoting Pool and $5,000 for the Execution Quality Pool.

TXSE Market Data

Members should review the TXSE Market Data Specifications to ensure their systems can receive and process AuctionPreamble and AuctionBandWindow messages ahead of the transfers. For more information on TXSE market data or to order TXSE market data, please contact TXSE Market Operations.

Market Maker Registration

Members intending to act as Market Makers in these securities may submit their registrations through Stockyard. Members should confirm that the appropriate users have access and permissions to complete the registration process.

Corporate Actions Listing Feed (CALF)

TXSE disseminates corporate action information for TXSE-listed securities through the Corporate Actions Listing Feed (CALF). Firms should confirm that they are configured to receive CALF notifications or contact TXSE Market Operations to establish delivery by email or SFTP.

TXSE Auction View & Member Auction Implementation Guide: Trading & Membership | Texas Stock Exchange

Sincerely,

TXSE Market Operations