Security	Date	Code	Shares	Price	A/D	D/I	Nature of ownership
Common Stock^F1,F2,F3,F4	Nov 29, 2016	J	3,604,266	—	D	I	See Footnotes
Common Stock^F1,F2,F4,F5	Nov 29, 2016	J	34,291	—	D	I	See Footnotes
Common Stock^F1,F2,F4,F6	Nov 29, 2016	J	2,149,902	—	D	I	See Footnotes

Table II — derivative securities

Security	Conv. / exercise price	Date	Code	Shares	A/D	Exercisable	Expires	Underlying	Underlying shares	Owned after	D/I
Warrant^{F8,F2,F3,F4,F7}	$1.4231	holding	—	—	—	Dec 30, 2011	Dec 30, 2016	Common Stock	2,085,383	2,085,383	I
Warrant^{F8,F2,F4,F5,F7}	$1.4231	holding	—	—	—	Dec 30, 2011	Dec 30, 2016	Common Stock	19,858	19,858	I
Warrant^{F8,F2,F4,F6,F7}	$1.4231	holding	—	—	—	Dec 30, 2011	Dec 30, 2016	Common Stock	1,245,964	1,245,964	I

Explanation of responses

F1In connection with the consummation of the transactions contemplated by the Agreement and Plan of Arrangement by and between the issuer and 1077801 B.C. Ltd., dated June 16, 2016 (the "Arrangement"), the reporting person rolled over their shares of common stock of the issuer into shares of common stock of 1077801 B.C. Ltd on a one-to-one basis.
F2This report on Form 4 is jointly filed by OrbiMed Capital GP III LLC ("OrbiMed Capital"), OrbiMed Advisors LLC ("OrbiMed Advisors"), Samuel D. Isaly ("Isaly"), OrbiMed Advisors Limited ("OrbiMed Limited") and OrbiMed Asia GP, L.P. ("OrbiMed Asia"). Each of the reporting persons disclaims beneficial ownership of the securities reported herein for purposes of Rule 16a-1(a) under the Securities Exchange Act of 1934, as amended (the "Exchange Act"), except to the extent of its or his pecuniary interest therein, if any. This report shall not be deemed an admission that the reporting persons are beneficial owners for the purpose of Section 16 of the Exchange Act, or for any other purpose.
F3These Shares and warrants to purchase Shares ("Warrants") are held of record by OrbiMed Private Investments III, LP ("OPI III") and may be deemed to be indirectly beneficially owned by OrbiMed Capital, OrbiMed Advisors and Isaly. OrbiMed Capital is the sole general partner of OPI III. OrbiMed Advisors, a registered adviser under the Investment Advisers Act of 1940, as amended, is the sole managing member of OrbiMed Capital. Pursuant to those relationships, OrbiMed Capital and OrbiMed Advisors have discretionary investment management authority with respect to the assets of OPI III. Such authority includes the power to vote and otherwise dispose of the securities held by OPI III. Isaly, a natural person, is the managing member of, and holder of a controlling interest in, OrbiMed Advisors. As a result, Isaly, OrbiMed Advisors and OrbiMed Capital share power to direct the vote and to direct the disposition of the securities held by OPI III.
F4The reporting persons have designated two representatives to serve on the Issuer's board of directors which, as of immediately prior to the closing of the Arrangement, are Jonathan Wang and Peter Thompson, both of whom are employees of OrbiMed Advisors. Each such representative disclaims beneficial ownership of the securities reported herein, except to the extent of his pecuniary interest therein, if any. This report shall not be deemed an admission that any of them are beneficial owners for the purpose of Section 16 of the Exchange Act, or for any other purpose.
F5These Shares and Warrants are held of record by OrbiMed Associates III, LP ("OA III") and may be deemed to be indirectly beneficially owned by OrbiMed Advisors and Isaly. OrbiMed Advisors is the sole general partner of OA III, and Isaly is the managing member of, and holder of a controlling interest in, OrbiMed Advisors. As a result, Isaly and OrbiMed Advisors share power to direct the vote and to direct the disposition of the securities held by OA III.
F6These Shares and Warrants are held of record by OrbiMed Asia Partners, L.P. ("OAP") and may be deemed to be indirectly beneficially owned by OrbiMed Asia and OrbiMed Limited. OrbiMed Asia is the sole general partner of OAP and OrbiMed Limited is the sole general partner of OrbiMed Asia. As a result, OrbiMed Asia has the power to direct the vote and to direct the disposition of the securities held by OAP and such power is exercised through OrbiMed Limited.
F7Price shown is denominated in Canadian Dollars.
F8In connection with the Arrangement, all outstanding Warrants will remain exercisable in accordance with their terms.