Bill Ackman has played a role in shake-ups in companies ranging from JC Penney and Canadian Pacific Railroad to Occidental Petroleum

Occidental Petroleum may consider selling its overseas assets or splitting into three separate companies in order to fund a stock buyback and improve its share price, CEO Steve Chazen told investors this week.

Occidental Petroleum shareholders oust Chairman and former CEO Ray Irani in a dramatic annual meeting, signaling the end of an era for the oil and gas producer.Occidental Petroleum shareholders ousted Chairman and former Chief Executive Ray Irani in

Irani’s exit had been on the cards since Occidental announced last month that Steve Chazen, chief executive, would be staying until end of next year

SANTA MONICA, California (Reuters) - Occidental Petroleum Corp shareholders voted to oust Executive Chairman Ray Irani after more than two decades of leading the fourth-largest U.S. oil company, in a jarring corporate end ahead of his planned retirem

Activist shareholders had called for the 78-old-year to step down.    

Occidental Chairman Ray Irani, one of the most highly paid executives of the last decade, will step down from his post as a rising wave of shareholder activism claimed another chieftain.

SAN FRANCISCO (MarketWatch) -- Occidental Petroleum Corp.ousted Chairman Ray Irani on Friday, a year ahead of his planned retirement and after two decades leading the oil and gas company. Irani was forced out of his job as Chief Executive two years a

Ray Irani loses board seat at Occidental

Occidental Petroleum Corp shareholders in a vote on Friday ousted Chairman Ray Irani after more than two decades of leading the oil company.    

SANTA MONICA, California (Reuters) - Occidental Petroleum Corp shareholders in a vote on Friday ousted Chairman Ray Irani after more than two decades of leading the oil company.

SANTA MONICA, Calif., May 3 (Reuters) - Occidental Petroleum Corp shareholders in a vote on Friday ousted Chairman Ray Irani after more than two decades of leading the oil company.

Occidental Petroleum Chairman Ray Irani has withdrawn as a nominee to serve a new term on the oil and gas producer’s board, and was absent from Friday’s shareholder meeting in Santa Monica.    

SANTA MONICA, Calif., May 3 (Reuters) - Occidental Petroleum Corp said Chairman Ray Irani would step down after shareholders withheld support for him to remain on the board following a push by certain investors to reject him after what some saw as a

SANTA MONICA, Calif., May 3 (Reuters) - Occidental Petroleum Corp said Chairman Ray Irani would step down after shareholders withheld support for him to remain on the board of directors.

Occidental Petroleum says former ambassador Edward Djerejian will replace him.

Apparently inspired by last week's NFL draft, CNBC brought in some experts last Friday to conduct a stock draft. One of the "drafted" stocks was Occidental Petroleum (NYSE: OXY), the fourth-largest U.S. oil company.

Investor advisory firm Glass, Lewis & Co. said it now supports the reelection of Occidental Petroleum Chairman Ray Irani, reversing its prior recommendation to oust the longtime executive.

(Reuters) - Shareholder advisory firm Glass Lewis has reversed its original recommendation for a vote against Occidental Petroleum Corp Executive Chairman Ray Irani after the company clarified its plans for Chief Executive Steve Chazen.

April 30 (Reuters) - Shareholder advisory firm Glass Lewis has reversed its original recommendation for a vote against Occidental Petroleum Corp Executive Chairman Ray Irani after the company clarified its plans for Chief Executive Steve Chazen.

Steve Chazen's job now looks much more secure than it did only recently.

The company’s board decided that the chief would remain, but set a mandatory retirement age of 68.    

With the share price still slumping, the company needs to do something.

The company said earlier this month it had appointed headhunters to find a replacement for Steve Chazen, who took over in 2010

Occidental Petroleum Corp. said Monday that Chief Executive Steve Chazen would remain at the helm through 2014 as the company restricted compensation packages and tightened requirements for serving on its board.    

(Reuters) - Occidental Petroleum Corp , the fourth-largest U.S. oil company, said Chief Executive Steve Chazen would continue in his role through 2014 with the full support of the board, reducing uncertainty surrounding its CEO succession plans.

Occidental Petroleum said Steve Chazen will continue to serve as its chief executive through the end of 2014 as it unveiled a slew of changes to its corporate governance and compensation policies.

April 29 (Reuters) - Occidental Petroleum Corp said Chief Executive Steve Chazen would continue in his role through 2014 with the full support of the board, countering a report that Chairman and former CEO Ray Irani wants Chazen to be replaced immedi

* First-quarter earnings/share ex items $1.69 vs est $1.54

* First-quarter earnings/share ex items $1.69 vs est $1.54

April 25 (Reuters) - Occidental Petroleum Corp : * Sees modest growth in Q2 U.S. liquids production, higher growth rates in

Los Angeles-based Occidental Petroleum, one of the largest crude oil producers in the country, said its first-quarter profit fell but beat expectations as the company tried to cut costs and manage lower prices for natural gas.    

April 25 (Reuters) - Occidental Petroleum Corp, the fourth-largest U.S. oil company, reported a higher-than-expected quarterly profit as it absorbed the impact of low U.S. natural gas prices and cut costs.

Leading up to Occidental Petroleum's (OXY) announcement of its first quarter earnings on Thursday, April 25, 2013 analysts have become more wary as expectations have fallen over the past month to earnings of $1.60 per share from earnings of $1.7