Ms. Tracy Robinson reports

CN TO REPORT SECOND-QUARTER 2023 FINANCIAL AND OPERATING RESULTS ON JULY 25, 2023

Canadian National Railway Company will issue its second quarter 2023 financial and operating results after the market close on July 25, 2023.

CN Railway's senior officers will review the results and the railway's outlook in a conference call starting at 4:30 p.m. ET on July 25. Tracy Robinson, CN Railway president and chief executive officer, will lead the call.

Parties wishing to participate via telephone may dial 1-800-715-9871 (Canada/United States), or 1-647-932-3411 (international), using 7430587 as the passcode. Participants are advised to dial in 10 minutes prior to the call.

CN Railway will webcast the presentation live and furnish slides supporting the officers' remarks via the investors section of its website. A webcast replay will be available after the call ends.

About Canadian National Railway Company

CN Railway is a world-class transportation leader and trade enabler. Essential to the economy, to the customers and to the communities it serves, CN Railway safely transports more than 300 million tons of natural resources, manufactured products and finished goods throughout North America every year. CN Railway's network connects Canada's Eastern and Western coasts with the United States South through an 18,600-mile rail network. CN Railway and its affiliates have been contributing to community prosperity and sustainable trade since 1919. CN Railway is committed to programs supporting social responsibility and environmental stewardship.