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• The dividend is payable on October 26, 2026, to shareholders of record at the close of business on September 25, 2026.
• The dividend is designated as an 'eligible' dividend under Canadian tax legislation.
• The announcement was made via a press release attached as Exhibit 99.1 to the 8-K filing.
• The event was reported under Item 8.01 (Other Events) as a routine corporate disclosure.

8.01 Other Events · 9.01 Financial Statements and Exhibits

• Reported diluted EPS decreased 14% to $1.15 from $1.33 in Q2 2025.
• Core adjusted diluted EPS increased 13% to $1.27 from $1.12 in Q2 2025.
• Reported operating ratio increased 90 basis points to 64.6% from 63.7% in Q2 2025.
• Volumes, as measured in revenue ton-miles, increased 4% in Q2 2026.

2.02 Results of Operations and Financial Condition · 9.01 Financial Statements and Exhibits

• Gordon Trafton, previously Vice-Chair, was appointed Chair of the Board effective immediately, per the Board's succession plan.
• Courville had served on the Board since May 1, 2013, and as Chair since May 7, 2019.
• Trafton has been a board member since Jan. 1, 2017, and was appointed Vice-Chair on January 28, 2026.
• A press release announcing the changes was issued on July 29, 2026, as Exhibit 99.1.

5.02 Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements · 7.01 Regulation FD Disclosure · 9.01 Financial Statements and Exhibits

• The 5 Year Facility maturity date is extended from June 25, 2030 to June 25, 2031.
• The 2 Year Facility maturity date is extended from June 25, 2027 to June 25, 2028.
• The agreement amends the third amended and restated credit agreement dated June 25, 2024, as previously amended.
• The full text of the agreement is filed as Exhibit 10.1 to the Form 8-K.

1.01 Entry into a Material Definitive Agreement · 9.01 Financial Statements and Exhibits

• At the April 29, 2026 annual meeting, CPKC shareholders elected all 14 director nominees, each receiving at least 95.84% of votes cast.
• The advisory Say on Pay vote on executive compensation was approved with 87.48% in favor.
• The advisory Say on Climate vote on CPKC's approach to climate change was approved with 88.72% in favor.
• Isabelle Courville was re-appointed Chair and Gordon Trafton was re-appointed Vice-Chair of CPKC's Board of Directors.

5.07 Submission of Matters to a Vote of Security Holders · 8.01 Other Events · 9.01 Financial Statements and Exhibits

• The dividend is payable on July 27, 2026, to shareholders of record as of June 26, 2026.
• The increase reflects CPKC's commitment to returning cash to shareholders, as stated by CEO Keith Creel.
• The dividend is designated as an 'eligible' dividend under Canadian tax law.
• The press release was filed as Exhibit 99.1 to the Form 8-K.

8.01 Other Events · 9.01 Financial Statements and Exhibits

• Reported diluted EPS decreased 3% to $0.94; core adjusted diluted EPS decreased 2% to $1.04.
• Reported operating ratio increased 70 bps to 66.0%; core adjusted OR increased 50 bps to 63.0%.
• Volumes, as measured in Revenue Ton-Miles, increased 2%.
• Management expressed confidence in delivering on full-year guidance despite market headwinds.

2.02 Results of Operations and Financial Condition · 9.01 Financial Statements and Exhibits

• The 2026 annual meeting of shareholders will be held virtually on April 29, 2026, at 9:00 a.m. Mountain Daylight Time, with a record date of March 9, 2026.
• Shareholders will vote on five items: receiving audited financial statements, appointing the auditor, an advisory vote on executive compensation, an advisory vote on climate approach, and electing directors.
• The company also filed a Notice of Availability of Materials (Exhibit 99.2) and issued a press release (Exhibit 99.3) on March 25, 2026, regarding the filing.
• The filing was made under Item 8.01 as an other event because CPKC, as a foreign private issuer, is providing its Canadian-law proxy materials to U.S. shareholders via this Form 8-K.

8.01 Other Events · 9.01 Financial Statements and Exhibits