Summary of APCO OIL & GAS INTERNATIONAL INC

Item 5.07. Submission of Matters to a Vote of Security Holders

(a) At the annual general meeting of shareholders of Apco Oil and Gas International Inc. ("Apco" or the "Company") on May 31, 2012, the shareholders of the Company voted on the matters set forth below.

(b)

1. The nominees for election to the Board of Directors of the Company were re-elected based upon the following votes. With respect to the election of Directors, Class A shares have 85% voting power as a class.

     Votes                              Ralph A. Hill       Robert J. LaFortune
     Class A Votes For                      20,301,592                20,301,592
     Class A Votes Against                           0                         0
     Class A Abstentions                             0                         0
     Class A Broker Non-Votes                        0                         0
     Ordinary Share Votes For                1,849,273                 1,941,063
     Ordinary Share Votes Against              195,503                   103,713
     Ordinary Share Abstentions                  1,862                     1,862
     Ordinary Share Broker Non-Votes           728,455                   728,455

2. The selection of Ernst & Young LLP as the Company's independent registered public accounting firm for 2012 was approved based on the following votes of Class A and ordinary shares of the Company:

                         Votes For            23,046,291
                         Votes Against             5,392
                         Abstention               19,598
                         Broker Non-Votes              0

3. The proposal relating to the advisory vote on executive compensation was approved based on the following votes of Class A and ordinary shares of the Company:

                         Votes For            22,233,592
                         Votes Against            78,587
                         Abstentions              36,051
                         Broker Non-Votes        728,455

Pursuant to the requirements of the Securities and Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

APCO OIL AND GAS INTERNATIONAL INC.

Date: June 4, 2012 By: /s/ Amy Flakne Name: Amy Flakne Title: Assistant Corporate Secretary