Business Wire | Jan 20, 2022 04:15PM EST

CoreSite Realty Corporation Announces Tax Reporting Information for 2021 Distributions

Jan. 20, 2022

DENVER--(BUSINESS WIRE)--Jan. 20, 2022--CoreSite Realty Corporation ("CoreSite") (formerly NYSE: COR), a subsidiary of American Tower Corporation ("American Tower") (NYSE: AMT), today announced year-end tax reporting information for its 2021 distributions. Stockholders are urged to consult with their personal tax advisors as to their specific tax treatment.

On December 28, 2021, American Tower completed the acquisition of CoreSite through a merger of one of American Tower's wholly owned subsidiaries with and into CoreSite. In connection with the consummation of the merger, CoreSite's shares ceased trading on the New York Stock Exchange.

CoreSite Realty Corporation Common Stock CUSIP 21870Q105 Former Ticker Symbol: COR

Ordinary Qualified Cash Taxable Taxable SectionRecord Payment Dividends 199A Capital Gain Unrecaptured Section 897 Distribution Dividends ^(1) Dividends Distribution Section 1250 Capital GainDate Date ^(1) Gain ^(2) Distribution (per share) (per (per (per share) ^(2) (per share) share) (per (per share) share) share)

12/31/ 01/15/ $1.230000 $0.000000 $0.000000 $0.000000 $1.230000 $1.230000 $1.2300002020 2021

03/31/ 04/15/ $1.230000 $0.000000 $0.000000 $0.000000 $1.230000 $1.230000 $1.2300002021 2021

06/30/ 07/15/ $1.270000 $0.000000 $0.000000 $0.000000 $1.270000 $1.270000 $1.2700002021 2021

09/30/ 10/15/ $1.270000 $0.000000 $0.000000 $0.000000 $1.270000 $1.270000 $1.2700002021 2021

12/02/ 12/13/ $1.270000 $0.000000 $0.000000 $0.000000 $1.270000 $1.270000 $1.2700002021 2021

(1) Included in Ordinary Taxable Dividends (2) Included in Capital Gain Distribution

Note: For the tax year ended December 28, 2021, with respect to the distributions above, there were no non-dividend distributions.

This information represents final income allocations.

About CoreSite

CoreSite, an American Tower company, provides hybrid IT solutions that empower enterprises, cloud, network, and IT service providers to monetize and future-proof their digital business. Our highly interconnected data center campuses offer a native digital supply chain featuring direct cloud onramps to enable customers to build customized hybrid IT infrastructure and accelerate digital transformation. For more than 20 years, CoreSite's team of technical experts have partnered with customers to optimize operations, elevate customer experience, dynamically scale, and leverage data to gain competitive edge. For more information, visit CoreSite.com and follow us on LinkedIn and Twitter.

About American Tower

American Tower, one of the largest global REITs, is a leading independent owner, operator and developer of multitenant communications real estate with a portfolio of approximately 219,000 communications sites and a highly interconnected footprint of U.S. data center facilities. For more information about American Tower, please visit www.americantower.com.

(c) 2022, CoreSite, L.L.C. All Rights Reserved

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