- Dec. 6, 1954: Apache was founded.
- 1959: Apache diversified until oil and gas demonstrated long-term viability and profitability.
- 1967: The Fagerness No. 1 discovery puts Apache on the map.
May 27, 1969: Apache's stock was listed on the New York Stock Exchange, opening at $30.50 per share.- 1971: Apache Exploration Company was formed, which brought renewed emphasis to oil and gas.
- 1977: Apache sells diversified assets.
- 1981: Apache Petroleum Company was formed, the country's first Master Limited Partnership.
- 1982: Acquisition of Dow Chemical's oil and gas assets by APC; beginning of growth through acquisition.
- 1986: Oxy acquisition and imminent tax reform leads to restructuring as a pure exploration and production company.
- 1987: Headquarters moves from Minneapolis, Minn., to Denver, Colo.
- 1988: Decision to go international; Apache is years ahead of its peer group.
- 1991: MW Petroleum acquisition formalizes “acquire and exploit” and precipitates headquarters' move to Houston.
- 1993: With Hadson acquisition, Australia becomes first international core area.
1995: Dekalb merger marks return to Canada after 25-year absence and formation of second international core area.- 1996: Earnings reach $100 million for the first time.
- 1996: Phoenix merger makes Egypt third international core area.
- July 22, 1997: Standard & Poors added Apache to the S&P 500 index.
- 1999: Shell GOM acquisition marks beginning of Apache's pre-eminence on the Outer Continental Shelf.
- 1999: Shell Canada acquisition: $518 million.
- 2001: Fletcher Challenge acquisition: Canada, $677 million.
2001: Repsol acquisition: Egypt , $447 million (which brought operatorship of Khalda).- 2003: BP North Sea acquisition adds fourth international core area.
- 2003: Qasr No.1 in Egypt: At 2-3 TCF, it marks the largest onshore discovery in the company's history.
- 2003: Earnings reach $1 billion for the first time on record reserves and production.
- 2003: BP acquisition: UK North Sea, $650 million.
- 2003: BP acquisition: Gulf of Mexico, $650 million.
- 2003: Shell acquisition: Gulf of Mexico, $200 million.
Jan. 12, 2004: Apache dually lists on the NASDAQ stock market.- 2004: Anadarko acquisition: Gulf of Mexico, $525 million.
- Oct. 26, 2004: Apache share price doubled in four years, adding more than $9 billion in shareholder value.
- 2005: ExxonMobil agreements: West Texas, Western Canada, onshore Louisiana and the Gulf of Mexico Continental Shelf
- 2005: Anadarko acquisition: Gulf of Mexico, $525 million.
- 2006: Amerada Hess acquisition: Permian Basin of West Texas and New Mexico.
- 2007: Year-end earnings hit record of $2.8 billion or $8.39 per share.
- 2009: Apache Founder Raymond Plank retires after 54 years of service.
- 2010: Devon acquisition: Gulf of Mexico shelf, $1.05 billion.
- 2010: BP acquisition: Permian Basin, $2.5 billion.
- 2010: BP acquisition: Canada, $3.25 billion.
- 2010: BP acquisition: Egypt, $650 million.
- 2010: Mariner Energy acquisition, $2.7 billion, provides a strategic position in the deepwater Gulf of Mexico.
- 2011: ExxonMobil Beryl Field and other UK North Sea assets for $1.75 billion
- 2012: Cordillera Energy Partners, $2.5 billion cash, plus 6.3 million Apache common stock for properties in the Anadarko Basin.