Security	Date	Code	Shares	Price	A/D	Owned after	D/I	Nature of ownership
Common Shares of Beneficial Interest^F2	Jan 23, 2018	M	18,574,619	$9.81	A	87,917,388	I	See footnote
Common Shares of Beneficial Interest^F2	Jan 23, 2018	F	12,147,801	$15.00	D	75,769,587	I	See footnote
Common Shares of Beneficial Interest^F2	Jan 23, 2018	S	13,581,284	$14.904	D	62,188,303	I	See footnote

Table II — derivative securities

Security	Conv. / exercise price	Date	Code	Shares	A/D	Exercisable	Expires	Underlying	Underlying shares	Owned after	D/I
Warrants to purchase Common Shares^F2,F3	$9.81	Jan 23, 2018	M	18,574,619	D	Dec 10, 2009	—	Common Shares of Beneficial Interest	18,574,619	0	I

Explanation of responses

F1Represents the cashless exercise of Warrants to purchase 18,574,619 Common Shares of Beneficial Interest ("Common Shares") by YF ART Holdings, L.P., a Delaware limited partnership ("YFA"). Pursuant to the terms of the Warrants, the Issuer withheld 12,147,801 Common Shares to pay the exercise price, and issued 6,426,818 Common Shares to YFA.
F2Securities held through YFA. YFA is not controlled by the reporting persons and may file separate reports under Section 16. Each reporting person disclaims beneficial ownership of all reported shares except to the extent of its pecuniary interest therein and the inclusion of the shares in this report shall not be deemed to be an admission of beneficial ownership of the reported shares for the purposes of Section 16 or otherwise.
F3The Warrants to purchase Common Shares expire on the earliest to occur of (i) 5:00 p.m. New York time on January 31, 2019, (ii) the closing of a qualified sale transaction and (iii) the closing of a qualified initial public offering.