U.S. oil giants Exxon Mobil, Chevron and ConocoPhillips challenged over ‘secretive’ tax practices
Oxfam on Monday filed shareholder resolutions against U.S. oil giants Exxon Mobil, Chevron and ConocoPhillips, saying a lack of transparency over their global tax practices poses a material risk for long-term investors.
The international relief charity said …
