Anthony Hatzenbuehler Form 3 CoreSite Realty / Anthony Hatzenbuehler ownership change

SEC Form 3

FORM 3

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person^*

Hatzenbuehler Anthony

(Last) (First) (Middle)

C/O CORESITE REALTY CORPORATION

1001 17TH STREET, SUITE 500

(Street)

DENVER CO 80202

(City) (State) (Zip)

2. Date of Event Requiring Statement (Month/Day/Year)
06/01/2019

3. Issuer Name and Ticker or Trading Symbol
CoreSite Realty Corp [ COR ]

4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director	10% Owner
X	Officer (give title below)	Other (specify below)
SVP, Field Operations

5. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Beneficially Owned
1. Title of Security (Instr. 4)	2. Amount of Securities Beneficially Owned (Instr. 4)	3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	4. Nature of Indirect Beneficial Ownership (Instr. 5)
Common Stock	7,799(1)(2)(3)	D

Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 4)	2. Date Exercisable and Expiration Date (Month/Day/Year)		3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)		4. Conversion or Exercise Price of Derivative Security	5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. Includes 5,409 shares of unvested restricted stock awards granted to the reporting person under the issuer's 2010 Equity Incentive Award Plan (the "2010 Plan"). The unvested shares of restricted stock vest as follows: (i) 582 shares vest on March 2, 2020, (ii) 1,120 shares vest in two equal annual installments on March 8, 2020 and March 8, 2021, (iii) 1,659 shares vest in three equal annual installments on March 15, 2020, March 15, 2021 and March 15, 2022 and (iv) 2,048 shares vest in three equal annual installments on March 15, 2020, March 15, 2021 and March 15, 2022, in each case, provided that the reporting person remains in continuous service with the issuer as of each vesting date.

2. Includes 2,390 performance-based restricted shares ("PSAs") granted under the 2010 Plan, all of which were granted in 2019.

3. The number of PSAs earned is based on the issuer's achievement of relative total shareholder return ("TSR") measured versus the MSCI US REIT Index over a three-year performance period ending December 31, 2021, and the number of shares earned may range from 25% to 175%. The PSAs are earned as follows: (i) 20% of the PSAs are earned upon TSR achievement in year one of the performance period, (ii) 20% of the PSAs are earned upon TSR achievement in year two of the performance period, (iii) 20% of the PSAs are earned upon TSR achievement in year three of the performance period, and (iv) 40% of the PSAs are earned upon a cumulative TSR achievement over the three-year performance period, subject to the reporting person's continued service with the issuer at the end of the three-year performance period. The PSAs are granted and issued at 175% of the target amount.

Remarks:

	/s/ Derek S. McCandless, Attorney-in-Fact	06/05/2019
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 5 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
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