Common Stock and Other Equity Related Transactions

Common Stockholder Distribution Activity

The following quarterly distributions have been declared and paid to common stockholders and non-controlling common operating partnership unit ("OP Unit") holders since January 1, 2017:



Distribution Amount Per Share	For the Quarter Ended	Stockholder Record Date	Payment Date
$0.4875	March 31, 2017	March 31, 2017	April 14, 2017
$0.4875	June 30, 2017	June 30, 2017	July 14, 2017
$0.4875	September 30, 2017	September 29, 2017	October 13, 2017
$0.4875	December 31, 2017	December 29, 2017	January 12, 2018
$0.5500	March 31, 2018	March 30, 2018	April 13, 2018
$0.5500	June 30, 2018	June 29, 2018	July 13, 2018
$0.5500	September 30, 2018	September 28, 2018	October 12, 2018

On November 2, 2017, we adopted a new at-the-market (“ATM”) equity offering program with certain sales agents, pursuant to which we may sell, from time-to-time, shares of our Common Stock, par value $0.01 per share, having an aggregate offering price of up to $200.0 million. Under our prior ATM program, the aggregate offering price was up to $125.0 million.

The following table presents the shares that were issued under the ATM equity offering programs during the nine months ended September 30, 2018 and nine months ended September 30, 2017.



(amounts in thousands, except stock data):	Nine Months Ended
	September 30, 2018		September 30, 2017
Shares of Common Stock sold	861,141		484,913
Weighted average price	$	91.45	$	86.69
Total gross proceeds	$	78,755	$	42,037
Commissions paid to sales agents	$	1,028	$	526

As of September 30, 2018, approximately $71.2 million of Common Stock remained available for issuance under the ATM equity offering program.

Exchanges

Subject to certain limitations, holders of OP Units can request an exchange of any or all of their OP Units for shares of Common Stock at any time. Upon receipt of such a request, we may, in lieu of issuing shares of Common Stock, cause the Operating Partnership to pay cash. During the nine months ended September 30, 2018, 87,718 OP Units were exchanged for an equal number of shares of Common Stock. During the same period in 2017, 1,335,247 OP Units were exchanged for an equal number of shares of Common Stock.

Series C Preferred Stock Redemption and Distribution Activity

During the nine months ended September 30, 2017, we redeemed our 6.75% Series C Preferred Stock for $138.4 million, including accrued dividends. The shares of Series C Preferred Stock that were redeemed now have the status of authorized but unissued preferred stock, without designation as to class or series. There were no shares of 6.75% Series C Preferred Stock issued or outstanding as of September 30, 2017 or 2018.

The following quarterly distributions have been declared and paid to our preferred stockholders since January 1, 2017 and prior to the stock's redemption, which occurred in September 2017:



Distribution Amount Per Share	For the Quarter Ended	Stockholder Record Date	Payment Date
$0.421875	March 31, 2017	March 10, 2017	March 31, 2017
$0.421875	June 30, 2017	June 15, 2017	June 30, 2017
$0.421875	September 30, 2017	September 15, 2017	September 25, 2017