1931
September 4 – Incorporation of Big Wedge Mining Company with capitalization of Php 2,000,000.

1933
September 1 – Incorporation of Atok Gold with capitalization of Php 1,000,000.

1936
July 1 – Shift of operations of Atok Gold from Antamok Central Vein to Keystone Vein System. The new processing plant’s extraction was over 91%.

1937
May – Cyanide-Flotation plant became operational due to the development of copper-gold ores in the Broadway Vein System.

1945
August – Start of plant rehabilitation from World War II.

1947
March – Atok Gold started milling operations with a start-up capacity of 225-tons a day. One of the first mines to resume operations after the war.

1948 
January 1 – Merger of Atok Gold Mining Co. and Big Wedge Mining Co with increased capital stock of Php 6,000,000.

January 1 – Increased par value of stocks from Php 0.10 to Php 2.00.

1952
The company hit the “Gold Vein” with a mining capacity of 500-tons per day at $35 per ounce.

1979
December – Operating Agreement signing with Benguet Corporation for the term of ten (10) years. Later on, it was extended until 2005.

1990
The great earthquake in Benguet made it difficult for mines to make a profit above its costs.

1996
June – The company changed its primary purpose from mining to general investment.
The company was renamed Atok-Big Wedge Co., Inc. (Atok) and spun off its mining assets to a wholly owned subsidiary, Atok Gold Mining Co., Inc.

2009
October 21 – Boerstar subscribed a total of 34,781,225 common shares at Php 1.00 per share.

As a result of the Boerstar acquisition, the management was changed and composed of the following:

2010

December 29 – Additional subscription of Boerstar and Progressive Development Corporation of 2,391,036,526 shares and 93,963,474 shares at par value, respectively.

February 15 – Approval of increase in authorized capital by the SEC to Php 10,000,000,000 (10 Billion). The shareholding structure of Atok will be as follows: