Item 5. Market For Registrant's Common Equity, Related Stockholder Matters and Issuer Purchases of Equity Securities.

Our common stock is traded on the NYSE under the symbol "IRM". The closing price of our common stock on the NYSE on February 7, 2020 was $31.83. As of February 7, 2020, there were 8,358 holders of record of our common stock. See Note 12 to Notes to Consolidated Financial Statements included in this Annual Report for additional information on dividends declared on our common stock.

At The Market (ATM) Equity Program

In October 2017, we established the At The Market (ATM) Equity Program. Sales of our common stock made pursuant to the Distribution Agreement may be made in negotiated transactions or transactions that are deemed to be “at the market” offerings as defined in Rule 415 under the Securities Act of 1933, as amended (the "Securities Act"), including sales made directly on the NYSE, or sales made to or through a market maker other than on an exchange, or as otherwise agreed between the applicable Agent and us. We intend to use the net proceeds from sales of our common stock pursuant to the At The Market (ATM) Equity Program for general corporate purposes, which may include acquisitions and investments, including acquisitions and investments in our Global Data Center Business, and repaying amounts outstanding from time to time under the Revolving Credit Facility (as defined in Note 4 to Notes to Consolidated Financial Statements included in this Annual Report).

During the quarter and year ended December 31, 2019, there were no shares of common stock sold under the At The Market (ATM) Equity Program. As of December 31, 2019, the remaining aggregate sale price of shares of our common stock available for distribution under the At The Market (ATM) Equity Program was approximately $431.2 million.

Unregistered Sales of Equity Securities and Use of Proceeds

We did not sell any unregistered equity securities during the three months ended December 31, 2019, nor did we repurchase any shares of our common stock during the three months ended December 31, 2019.