Marie Jersak – Biography
Last update: January 12, 2026Executive profile
Marie was Head of Tax, Canada at Shell, and Vice President, Global Taxation, Treasury and Insurance at CNOOC International. Marie Jersak joined AltaGas in 2024.
Marie Jersak is currentlyVice President of Tax at AltaGas - View - AltaGas org chart
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Education
Marie Jersak has a Bachelor of Commerce and Bachelor of Arts in Accounting and History from University of Saskatchewan.
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Company Colleagues
- At AltaGas, Marie Jersak has 34 colleagues including Vern Yu (CEO & Director), Victoria Calvert (Director)…
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- In the Oil & Gas industry, Marie Jersak has 23,578 colleagues in 1,350 companies located in 105 countries. 12,354 executive movements have been recorded in the last 12 months. Learn more about Oil & Gas.
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