Security	Date	Code	Shares	Price	A/D	Owned after	D/I	Nature of ownership
Common Stock, no par value^F1,F2	Apr 3, 2017	S	17,000	$113.50	D	404,865	I	by Nine Ten Partners LP
Common Stock, no par value^F3	holding	—	—		—	2,512	D
Common Stock, no par value^F4	holding	—	—		—	208	D
Common Stock, no par value^F5	holding	—	—		—	100	D

Table II — derivative securities

No Table II lines on this filing.

Explanation of responses

F1This Form 4 is filed jointly by Nine Ten Partners LP ("NT Fund"), Nine Ten Capital Management LLC ("NTCM"), Brian Bares, James Bradshaw and Russell Mollen (collectively, the "Reporting Persons"). Each Reporting Persons may be deemed to be a member of a Section 13(d) group that collectively owns more than 10% of the Issuer's outstanding shares of Common Stock. Each of the Reporting Persons disclaims beneficial ownership of the securities reported herein except to the extent of his or her pecuniary interest therein.
F2Shares of Common Stock are owned directly by NT Fund. NTCM is the investment manager of NT Fund and may be deemed to have beneficial ownership over the shares of Common Stock owned directly by NT Fund by virtue of the sole and exclusive authority granted to NTCM by NT Fund to vote and dispose of the shares of Common Stock owned directly by NT Fund. As the Managing Members of NTCM, each of Messrs. Bares, Bradshaw and Mollen may be deemed to beneficially own the shares of Common Stock owned directly by NT Fund.
F3These shares of Common Stock are owned directly by Mr. Bares.
F4These shares of Common Stock are owned directly by Mr. Bradshaw.
F5These shares of Common Stock are owned directly by Mr. Mollen.