Futures

The Minneapolis Grain Exchange (“MGEX”) will participate in the industry-wide Futures Industry
Association (“FIA”) sponsored Disaster Recovery (“DR”) test on Saturday, October 5, 2024. During the
test, U.S. futures exchanges, clearing houses, Futures Commission Merchants, back-office providers, and
data vendors will simultaneously test connectivity and functionality between DR sites. All MGEX Clearing
Members are required to participate in the FIA DR Test, including the pre-testing described below.
Failure to do so may result in disciplinary action.

MGEX will hold a required pre-test for Clearing Members on Saturday, September 14, 2024, from 10:00
a.m. to 12:00 p.m. CST. Participation in this pre-test is mandatory for all Clearing Members. If your
firm is unable to participate in the pre-test on September 14th, an additional pre-test will be held on
Saturday, September 21, 2024. The purpose of pre-testing is to ensure firms are able to connect to MGEX’s
DR systems and address any problems that arise prior to the October 5th test.

Pre-Testing:
All firms must connect and download any previous TRX file from the MGEX DR SFTP using the same login
and password information as production and the information detailed below.

MGEX DR SFTP: 199.168.159.142 (during failover testing mgex-sftp.miami-holdings.net will also
resolve to this IP address)

Required Responses and Contact Information:
Please contact Lindsay Hopkins at (612) 321-7143 or lhopkins@miaxglobal.com by Friday, August 23,
2024, to confirm your participation in the pre-testing or if you have any questions concerning the test or
participation. Please include your contacts for who will be participating in the test. MGEX will be followingup
with firms in the coming weeks to confirm your receipt of this memo and test plans. Upon completing
the pre-test, send an email to lhopkins@miaxglobal.com and jkrause@miaxglobal.com confirming
completion of such test and if testing was successful or not. If testing was not successful, please note any
issues.

For more information, please contact MGEX Clearing Operations at MGEXClearingOperations@miaxglobal.com or (612) 321-7146.

To add MGEX Alerts to your current e-mail subscriptions, revise your current MIAX Exchange Group e-mail subscriptions or to register a new e-mail address, visit MIAX Email Subscriptions.

To learn more about MGEX, please contact Futures@miaxglobal.com.