The U.S. Securities and Exchange Commission (SEC) last fall raised the hurdle for companies seeking to exclude environment and social proposals from facing shareholders. Follow This is an activist group of 8,000 shareholders who hold stakes in oil companies in Europe and the United States. While Occidental Petroleum has sought to bar the group's proposal saying the claims have already been "substantially implemented", Exxon Mobil Corp, Chevron Corp, ConocoPhillips and Phillips 66 each have not blocked the group's petition, said van Baal. Occidental and Phillips 66 declined to comment. Exxon said it considers feedback and input from shareholders. Chevron said it only asks to exclude any proposal that do not comply with SEC shareholder petition rules. Conoco did not respond to a request for comment. Follow This previously put similar proposals calling for the oil firms to "substantially reduce greenhouse gas (GHG) emissions."