Oxy | Executive Stock Ownership

The following is a summary of the Oxy common stock including stock awards, held by the company's named executive officers as of February 28, 2013. Oxy has had executive stock ownership guidelines in effect since January 1, 1996. To learn more about Oxy's executive stock ownership guidelines, click here.

Name and Title	Sole Voting and Investment Shares ⁽¹⁾	Restricted Shares⁽²⁾	Exercisable Options ⁽³⁾	Stock Units⁽⁴⁾	Total ⁽⁵⁾
Stephen I. Chazen President and Chief Executive Officer	2,028,374	155,137	0	398,055	2,581,566
Ray R. Irani* Executive Chairman	7,981,811⁽⁶⁾	167,001	0	587,102	8,735,914
Donald P. de Brier Corporate Executive Vice President and Corporate Secretary	675,917	53,442	0	115,473	844,832
Cynthia L. Walker Executive Vice President and Chief Financial Officer	5,600	9,065	0	29,503	44,168
William E. Albrecht Vice President and President, Americas, Oxy Oil and Gas	11,137	51,069	0	104,185	166,391
Edward A. Lowe Vice President and President, Oxy Oil and Gas, Int'l Production	12,423	51,069	500	100,439	164,431
Willie C.W. Chiang Executive Vice President, Operations	19,641	18,920	0	30,271	68,832
James M. Lienert Executive Vice President, Business Support	139,720	33,401	0	66,928	240,049

(1) For the executive officers, includes shares held through the Occidental Petroleum Corporation Savings Plan as of February 28, 2013.

(2) For non-employee directors, includes shares which must be held for a period of time under the 2005 Long-Term Incentive Plan. For executive officers, includes shares granted in 2010, 2011 and 2012 as Restricted Stock Incentive awards, which remain forfeitable until the certification of the achievement of the performance goal.

(3) Includes options and stock appreciation rights which will be exercisable within 60 days.

(4)Includes performance stock awards at target level, or for 2010, 2011 and 2012 awards, at the mid-point performance level (Occidental's rank of six out of twelve peer group companies). Until the performance period ends and the awards are certified, no shares of common stock are issued. However, grant receipts receive dividend equivalents on the target share amount of performance awards during the perforrmance period for awards granted prior to 2010.

(5) Total is the sum of the four previous columns. For a more detailed analysis, see the 2013 Proxy Statement (PDF). For information on transactions subsequent to February 28, 2013, see the Statements of Changes in Beneficial Ownership on Form 4 filed by the named individuals, which can be found on the SEC Filings page in the Investor Relations section.

(6) Includes 272,000 shares beneficially owned by Dr. Irani through a limited partnership and the Irani Family Foundation.

* Ray R. Irani is no longer Executive Chairman as of May 3, 2013.

EXECUTIVE STOCK OWNERSHIP GUIDELINES
Executive Ownership as of February 28, 2013

	Target Ownership Requirement			Compliance with Requirement
Name	Multiple of Base Salary	Multiple Expressed In Dollars		Shares Held by Executive ⁽¹⁾	Value of Shares Held by Executive ⁽²⁾
Stephen I. Chazen	10	$	14,000,000	2,581,566	$	212,540,329
Ray R. Irani*	10	$	13,000,000	8,735,914	$	719,227,800
Donald P. de Brier	5	$	2,750,000	844,832	$	69,555,019
Cynthia L. Walker	5	$	3,000,000	44,168	$	3,636,351
William E. Albrecht	5	$	2,750,000	166,391	$	13,698,971
Edward A. Lowe	5	$	2,750,000	163,931	$	13,496,439
Willie C.W. Chiang	5	$	3,000,000	68,832	$	5,666,939
James M. Lienert	5	$	2,325,000	240,049	$	19,763,234

(1) The following forms of stock ownership are counted toward satisfaction of the guidelines:

Direct stock holdings, including shares held in a living trust or by a family partnership or corporation
controlled by the officer unless the officer expressly disclaims beneficial ownership of such shares.
Shares held in the Occidental Petroleum Corporation Savings Plan.
Outstanding long-term stock awards, including, without limitation, restricted stock awards, restricted stock units, performance stock awards and performance stock units, valued at target or midpoint performance level, as applicable. Stock options and stock appreciation rights are not included.

(2) Value is based on the closing price on the New York Stock Exchange of the Common Stock as of February 28, 2013, which was $82.33.

* Ray R. Irani is no longer Executive Chairman as of May 3, 2013.