SEC Form 4 · accession 0001209191-17-022862

CoreSite Realty Corp · COR

Statement of changes in beneficial ownership, as filed. Original on EDGAR ↗

Reporting owner

Officer — CFO and Treasurer

Period of report

Mar 22, 2017

Accepted (ET)

Mar 24, 2017 · 7:29 pm EDT

Rule 10b5-1 plan

unknown — predates the checkbox

Issuer CIK

0001490892

Table I — non-derivative securities

Security	Date	Code	Shares	Price	A/D	Owned after	D/I
Common Stock	Mar 22, 2017	M	22,066	$32.40	A	133,993	D
Common Stock^F2,F3	Mar 22, 2017	S	3,724	$87.57	D	130,269	D
Common Stock^F2,F4	Mar 22, 2017	S	10,576	$88.46	D	119,693	D
Common Stock^F2,F5	Mar 22, 2017	S	600	$89.27	D	119,093	D

Security	Conv. / exercise price	Date	Code	Shares	A/D	Exercisable	Expires	Underlying	Underlying shares	Owned after	D/I
Stock Option (Right to Buy)^F6	$32.40	Mar 22, 2017	M	22,066	D	—	Feb 28, 2023	Common Stock	22,066	0	D

F1The option exercise and sales were effected pursuant to a sales plan adopted by the reporting person and intended to comply with Rule 10b5-1 under the Securities Exchange Act of 1934.
F2Represents shares sold by the reporting person to cover the exercise price and tax obligations upon the exercise of the options.
F3The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $87.11 to $88.09, 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 ranges set forth in footnotes 3, 4 and 5.
F4The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $88.12 to $89.11, inclusive.
F5The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $89.13 to $89.46, inclusive.
F6The stock options were granted under the issuer's 2010 Equity Incentive Award Plan and vest and become exercisable in four equal annual installments beginning on February 28, 2014, provided that the reporting person remains employed by the issuer as of each vesting date.