Page 3 of 11 – SEC Filing
SCHEDULE 13D
| CUSIP No. 006855100 | Page 3 of 8 Pages |
| 1 | NAME OF REPORTING PERSONS Deerfield Management Company, L.P. | ||
| 2 | CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
| (a) ☐ (b) ☒
| |
| 3 | SEC USE ONLY
| ||
| 4 | SOURCE OF FUNDS AF | ||
| 5 | CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT
| ☐ | |
| 6 | CITIZENSHIP OR PLACE OF ORGANIZATION Delaware | ||
|
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH | 7 | SOLE VOTING POWER 0 | |
| 8 | SHARED VOTING POWER 798,297 (2) | ||
| 9
| SOLE DISPOSITIVE POWER 0 | ||
| 10
| SHARED DISPOSITIVE POWER 798,297 (2) | ||
| 11
| AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 798,297 (2) | ||
| 12 | CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN
| ☐ | |
| 13
| PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 4.87% (2) | ||
| 14 | TYPE OF REPORTING PERSON PN | ||
(2) Consists of shares of Class A Common Stock held by Deerfield Partners, L.P. and Deerfield International
Master Fund, L.P., of each of which Deerfield Management Company, L.P. is the investment adviser. The percentage of outstanding
Class A Common Stock beneficially owned has been determined based on 16,395,599 shares of Class A Common Stock outstanding as
of November 7, 2016, as set forth in the Company’s Quarterly Report on Form 10-Q for the quarterly period ended September
30, 2016.
