FRA Certification Helpline: (216) 694-0240

(Source: Canadian National press release, April 23, 2012)

MONTREAL, April 23, 2012 — CN announced today that its Board of Directors has approved a second-quarter 2012 dividend on the Company’s common shares outstanding. A quarterly dividend of thirty-seven-and-one-half cents (C$0.375) per common share will be paid on June 29, 2012, to shareholders of record at the close of business on June 8, 2012.