0001209191-18-030272.txt : 20180515 0001209191-18-030272.hdr.sgml : 20180515 20180515175102 ACCESSION NUMBER: 0001209191-18-030272 CONFORMED SUBMISSION TYPE: 4 PUBLIC DOCUMENT COUNT: 2 CONFORMED PERIOD OF REPORT: 20180511 FILED AS OF DATE: 20180515 DATE AS OF CHANGE: 20180515 REPORTING-OWNER: OWNER DATA: COMPANY CONFORMED NAME: Jones Mark R CENTRAL INDEX KEY: 0001733571 FILING VALUES: FORM TYPE: 4 SEC ACT: 1934 Act SEC FILE NUMBER: 001-34877 FILM NUMBER: 18838130 MAIL ADDRESS: STREET 1: C/O CORESITE REALTY CORPORATION STREET 2: 1001 17TH STREET, SUITE 500 CITY: DENVER STATE: CO ZIP: 80202 ISSUER: COMPANY DATA: COMPANY CONFORMED NAME: CoreSite Realty Corp CENTRAL INDEX KEY: 0001490892 STANDARD INDUSTRIAL CLASSIFICATION: REAL ESTATE INVESTMENT TRUSTS [6798] IRS NUMBER: 000000000 STATE OF INCORPORATION: MD FISCAL YEAR END: 1231 BUSINESS ADDRESS: STREET 1: 1001 17TH STREET STREET 2: SUITE 500 CITY: DENVER STATE: CO ZIP: 80202 BUSINESS PHONE: (866) 777-2673 MAIL ADDRESS: STREET 1: 1001 17TH STREET STREET 2: SUITE 500 CITY: DENVER STATE: CO ZIP: 80202 4 1 doc4.xml FORM 4 SUBMISSION X0306 4 2018-05-11 0 0001490892 CoreSite Realty Corp COR 0001733571 Jones Mark R C/O CORESITE REALTY CORPORATION 1001 17TH STREET, SUITE 500 DENVER CO 80202 0 1 0 0 Chief Accounting Officer Common Stock 2018-05-11 4 S 0 600 107.60 D 16821 D The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $107.60 to $107.61, inclusive. The reporting person undertakes to provide to the issuer, any shareholder of the issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote. /s/ Derek S. McCandless, Attorney-in-Fact 2018-05-15 EX-24 2 attachment1.htm EX-24 DOCUMENT

POWER OF ATTORNEY

Know all by these presents, that the undersigned hereby constitutes and appoints
any one of Derek S. McCandless, Adam Post or Ned Prusse acting alone, as
the undersigned's true and lawful attorney-in-fact to:

(1) execute for and on behalf of the undersigned, in the undersigned's capacity
as an officer of CoreSite Realty Corporation, a Maryland corporation (the
"Company"), the Form ID and Forms 3, 4, and 5 in accordance with Section 16(a)
of the Securities Exchange Act of 1934, as amended (the "Exchange Act") and the
rules thereunder;

(2) do and perform any and all acts for and on behalf of the undersigned which
may be necessary or desirable to complete and execute any such Form ID or Form
3, 4, or 5, complete and execute any amendment or amendments thereto, and timely
file such form with the SEC and any stock exchange or similar authority; and

(3) take any other action of any type whatsoever in connection with the
foregoing which, in the opinion of such attorney- in-fact, may be of benefit to,
in the best interest of, or legally required by, the undersigned, it being
understood that the documents executed by such attorney-in-fact on behalf of the
undersigned pursuant to this Power of Attorney shall be in such form and shall
contain such terms and conditions as such attorney-in-fact may approve in such
attorney-in fact's discretion.

The undersigned hereby grants to such attorney-in-fact full power and authority
to do and perform any and every act and thing whatsoever requisite, necessary,
or proper to be done in the exercise of any of the rights and powers herein
granted, as fully to all intents and purposes as the undersigned might or could
do if personally present, with full power of substitution or revocation, hereby
ratifying and confirming all that such attorney-in-fact, or such attorney-in
fact's substitute or substitutes, shall lawfully do or cause to be done by
virtue of this power of attorney and the rights and powers herein granted. The
undersigned acknowledges that the foregoing attorney-in-fact, in serving in such
capacity at the request of the undersigned, is not assuming, nor is the Company
assuming any of the undersigned's responsibilities to comply with Section 16 of
the Exchange Act.

This Power of Attorney shall remain in full force and effect until the
undersigned is no longer required to file the Form ID or Forms 3, 4, and 5 with
respect to the undersigned's holdings of and transactions in securities issued
by the Company, unless earlier revoked by the undersigned in a signed writing
delivered to the foregoing attorney-in-fact.

IN WITNESS WHEREOF, the undersigned has caused this Power of Attorney to be
executed as of this 26th day of February, 2018.


							/s/ Mark Jones
							Name: Mark Jones