SEC Form 4 · accession 0001209191-17-017009

CoreSite Realty Corp · COR

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

Reporting owner

Jeffrey S Finnin

Officer — CFO and Treasurer

Period of report

Feb 28, 2017

Accepted (ET)

Mar 2, 2017 · 8:41 pm EST

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^F2,F3	Feb 28, 2017	S	9,400	$90.26	D	99,444	D
Common Stock	Mar 1, 2017	M	23,795	$23.99	A	123,239	D
Common Stock^F4,F5	Mar 1, 2017	S	8,084	$89.24	D	115,155	D
Common Stock^F4,F6	Mar 1, 2017	S	5,416	$89.64	D	109,739	D
Common Stock^F7,F8	Mar 2, 2017	S	1,025	$90.11	D	108,714	D

Table II — derivative securities

Security	Conv. / exercise price	Date	Code	Shares	A/D	Exercisable	Expires	Underlying	Underlying shares	Owned after	D/I
Stock Option (Right to Buy)^F9	$23.99	Mar 1, 2017	M	23,795	D	—	Apr 5, 2022	Common Stock	23,795	0	D

Explanation of responses

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.
F2Includes 1,400 shares sold by the reporting person to cover tax obligations upon the vesting of restricted stock.
F3The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $89.83 to $90.77, 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, 5, 6 and 8.
F4Represents shares sold by the reporting person to cover the exercise price and tax obligations upon the exercise of the options.
F5The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $88.52 to $89.51, inclusive.
F6The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $89.52 to $89.89, inclusive.
F7Represents shares sold by the reporting person to cover tax obligations upon the vesting of restricted stock.
F8The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $89.84 to $90.62, inclusive.
F9The stock options vest and become exercisable in four equal annual installments beginning on April 5, 2013, provided that the reporting person remains employed by the issuer as of each vesting date.