New Listing from Origin Bancorp, Inc.

Dear Member,

TXSE welcomes the launch of the following security from Origin Bancorp, Inc. on October 13, 2026. Trading will begin at 8:00 a.m. ET.

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 transfer. A complete list of upcoming TXSE listings is available on the TXSE Listings Calendar.

TXSE Auctions

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

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 transfer. 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 this security 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.

Contact Information:

TXSE Market Operations
MarketOps@TXSE.com
214-612-0388

Sincerely,

TXSE Market Operations