Notable events.

• Position: Calendar

1993:

Steve Ells opens first Chipotle Mexican Grill in Denver.

1995:

Second location opens in Boulder.

1998:

McDonald's invests. The first Chipotle outside Colorado opens in Kansas City.

2005:

The company surpasses 500 locations.

January 2006:

Chipotle goes public on the New York Stock Exchange. It was the best IPO for a U.S. company in six years. The $22 price of the initial public offering doubled on the first day to $44 and had grown by more than 3,000 percent in a decade before its recent swoon.

October 2006:

McDonald's divests. It's $360 million investment grew to $1.5 billion.

2010:

Chipotle opens its 1,000th location.

2014:

Annual revenue tops $4 billion.

Q2 2014:

Chipotle reports 17.3 percent same-store sales growth.

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