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Filing Details

Accession Number:: 0000921895-17-002188
Form Type:: 4
Zero Holdings:: No
Publication Time:: 2017-08-16 18:55:30
Reporting Period:: 2017-08-14

Filing Date:: 2017-08-16
Accepted Time:: 2017-08-16 18:55:30
SEC Url:: Form 4 Filing

Issuer

Cik	Name	Symbol	Sector (SIC)	IRS No
1582313	Xenon Pharmaceuticals Inc.	XENE	Investment Advice (6282)	DE

Insiders

Cik	Name	Reported Address	Director	Officer	Large Shareholder	Other
918923	P L Fund Value Biotechnology	1 Sansome St 30Th Fl San Francisco CA 94104	No	No	No	Yes
1055947	P/Il L Partners Bvf	1 Sansome St 30Th Fl San Francisco CA 94104	No	No	Yes	No
1056807	Bvf Inc/Il	1 Sansome St 30Th Fl San Francisco CA 94104	No	No	Yes	No
1102444	Biotechnology Value Fund Ii Lp	1 Sansome St 30Th Fl San Francisco CA 94104	No	No	No	Yes
1233840	N Mark Lampert	1 Sansome St 30Th Fl San Francisco CA 94104	No	No	Yes	No
1660683	Biotechnology Value Trading Fund Os Lp	P.o. Box 309 Ugland House Grand Cayman E9 KY1-1104	No	No	No	Yes
1660684	Ltd. Os Partners Bvf	P.o. Box 309 Ugland House Grand Cayman E9 KY1-1104	No	No	No	Yes

Reported Non-Derivative Transactions

Show Other Fields >>

Sec. Name	Acquisiton - Disposition	Date	Amount	Price	Remaning Holdings	Equity Swap Involved	Form Type	Code	Nature of Ownership
Common Stock, No Par Value Per Share	Acquisiton	2017-08-14	28,007	$2.70	1,663,039	No	4	P	Direct
Common Stock, No Par Value Per Share	Acquisiton	2017-08-14	13,337	$2.70	1,070,265	No	4	P	Direct
Common Stock, No Par Value Per Share	Acquisiton	2017-08-15	11,429	$2.41	1,674,468	No	4	P	Direct
Common Stock, No Par Value Per Share	Acquisiton	2017-08-15	7,429	$2.41	1,077,694	No	4	P	Direct

Equity Swap Involved	Form Type	Code	Nature of Ownership
No	4	P	Direct
No	4	P	Direct
No	4	P	Direct
No	4	P	Direct

Reported Non-Derivative Holdings

Sec. Name	Remaning Holdings	Nature of Ownership	Explanation
Common Stock, No Par Value Per Share	297,464	Direct

Footnotes

This Form 4 is filed jointly by Biotechnology Value Fund, L.P. ("BVF"), Biotechnology Value Fund II, L.P. ("BVF2"), Biotechnology Value Trading Fund OS LP ("Trading Fund OS"), BVF Partners OS Ltd. ("Partners OS"), BVF Partners L.P. ("Partners"), BVF Inc. and Mark N. Lampert (collectively, the "Reporting Persons"). Each of the Reporting Persons is 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 shares of Common Stock reported herein except to the extent of his or its pecuniary interest therein.
Shares of Common Stock owned directly by BVF. As the general partner of BVF, Partners may be deemed to beneficially own the shares of Common Stock owned directly by BVF. As the investment adviser and general partner of Partners, BVF Inc. may be deemed to beneficially own the shares of Common Stock owned directly by BVF. As a director and officer of BVF Inc., Mr. Lampert may be deemed to beneficially own the shares of Common Stock owned directly by BVF.
Shares of Common Stock owned directly by BVF2. As the general partner of BVF2, Partners may be deemed to beneficially own the shares of Common Stock owned directly by BVF2. As the investment adviser and general partner of Partners, BVF Inc. may be deemed to beneficially own the shares of Common Stock owned directly by BVF2. As a director and officer of BVF Inc., Mr. Lampert may be deemed to beneficially own the shares of Common Stock owned directly by BVF2.
Shares of Common Stock owned directly by Trading Fund OS. As the general partner of Trading Fund OS, Partners OS may be deemed to beneficially own the shares of Common Stock owned directly by Trading Fund OS. As the investment manager of Trading Fund OS and the sole member of Partners OS, Partners may be deemed to beneficially own the shares of Common Stock owned directly by Trading Fund OS. As the investment adviser and general partner of Partners, BVF Inc. may be deemed to beneficially own the shares of Common Stock owned directly by Trading Fund OS. As a director and officer of BVF Inc., Mr. Lampert may be deemed to beneficially own the shares of Common Stock owned directly by Trading Fund OS.