Item 1(a).
|
Name of Issuer
:
|
Athenex, Inc. (the Issuer)
Item 1(b).
|
Address of Issuers Principal Executive Offices
:
|
1001 Main Street, Suite 600, Buffalo, NY 14203
Item 2(a).
|
Names of Persons Filing
:
|
The names of the persons filing this report (collectively, the Reporting Persons) are:
Perceptive Advisors LLC (Perceptive Advisors)
Joseph Edelman (Mr. Edelman)
Perceptive Life Sciences Master Fund, Ltd. (the Master Fund)
Item 2(b).
|
Address of Principal Business Office or, if None, Residence
:
|
The address of the principal business office of each of the Reporting Persons is:
51 Astor Place, 10th Floor
New
York, NY 10003
Perceptive Advisors is a Delaware limited liability company
Mr. Edelman is a United States citizen
The Master Fund is a Cayman Islands corporation
Item 2(d).
|
Title of Class
of Securities
:
|
Common stock, $0.001 par value per share (Common Stock)
Item 2(e).
|
CUSIP Number
:
|
04685N103
Item 3.
|
If this statement is filed pursuant to
§
§
240.13d-1(b)
or
240.13d-2(b)
or (c), check
whether the person filing is a:
|
Not applicable.
The information required by this item with respect to each Reporting Person is set forth in Rows 5 through 9 and 11 of the cover page to this
Schedule 13G. The ownership percentages reported are based on 77,055,698 outstanding shares of Common Stock.
The Master Fund directly
holds 9,196,022 shares of Common Stock. Additionally a separate fund managed by Perceptive Advisors holds warrants that may be exercised for 425,000 shares of Common Stock. Perceptive Advisors serves as the investment manager to the funds and may be
deemed to beneficially own the securities directly held by the funds. Mr. Edelman is the managing member of Perceptive Advisors and may be deemed to beneficially own the securities directly held by the funds.