CoreSite Announces 2011 Distribution Tax Treatment

DENVER--(BUSINESS WIRE)--CoreSite Realty Corporation (“CoreSite”) (NYSE:COR) today announced the income tax allocation for federal income tax purposes of its 2011 distributions on its common stock (CUSIP: 21870Q105).

Record Date	Payable Date	Distribution Per Share	Taxable Ordinary Dividends	Long-term Capital Gains	Long-term Unrecaptured Section 1250 Gain	Qualified Dividends	Return of Capital
12/31/10	1/14/11	$0.13	$0.0885	$0.0000	$0.0000	$0.0000	$0.0000
3/31/11	4/15/11	$0.13	$0.1300	$0.0000	$0.0000	$0.0000	$0.0000
6/30/11	7/15/11	$0.13	$0.1300	$0.0000	$0.0000	$0.0000	$0.0000
9/30/11	10/15/11	$0.13	$0.1300	$0.0000	$0.0000	$0.0000	$0.0000
12/30/11	1/17/12	$0.18	$0.1800	$0.0000	$0.0000	$0.0000	$0.0000
	Total	$0.70	$0.6585	$0.0000	$0.0000	$0.0000	$0.0000

Under the tax rules applicable to real estate investment trusts such as CoreSite, a portion of the January 14, 2011, distribution applied to tax year 2010. The remaining portion of the distribution is applied to 2011 for federal income tax purposes. The entire amount of the January 17, 2012, distribution applies to tax year 2011.

CoreSite’s tax return for the year ended December 31, 2011, has not been filed. As a result, the income tax allocation for the distributions discussed above has been calculated using the best available information as of the date of the release.

Please note that federal tax laws affect taxpayers differently, and the information in this release is not intended as advice to shareholders on how distributions should be reported on their tax returns. Also note that state and local taxation of real estate investment trust distributions varies and may not be the same as the taxation under the federal rules. CoreSite encourages shareholders to consult with their own tax advisors as to their specific federal, state and local income tax treatment of CoreSite distributions.

About CoreSite

CoreSite Realty Corporation (NYSE: COR) is a national provider of powerful, network-rich data centers, efficient interconnection services, and global peering opportunities. More than 700 customers such as Global 1000 enterprises, communications providers, cloud and content companies, financial firms, media and entertainment, healthcare, and Government agencies trust CoreSite to power, cool, connect, and secure their mission-critical IT assets. CoreSite data centers are catalysts for network growth, featuring established industry ecosystems with access to 200+ carriers and service providers resulting in more than 12,000 interconnections under management. The company tailors its data center product to unique customer requirements by way of a flexible offering that includes cage-to-cabinet colocation, private data centers and suites, and a responsive customer service and support infrastructure. CoreSite's portfolio comprises more than two million square feet, including space held for redevelopment and development, across 12 data centers in seven key U.S. economic centers. For more information, visit www.CoreSite.com.