13G Filing: Camber Capital Management and Amag Pharmaceuticals Inc. (AMAG)

Page 2 of 6 – SEC Filing

13G

CUSIP No. 00163U106
Page 2 of
6
 
1. Names of
Reporting Persons.
Camber Capital
Management LLC
42-1693587
 
2. Check the
Appropriate Box if a Member of a Group
(a) ☐
(b) ☐

3. SEC Use Only
4. Citizenship or
Place of Organization
Massachusetts
   Number
of Shares
   Beneficially
   Owned by
   Each Reporting
   Person With:
5. Sole Voting
Power
0
shares
6. Shared Voting
Power
2,500,000
shares
 
7. Sole Dispositive
Power
0
shares
8. Shared
Dispositive Power
2,500,000
shares
  9. Aggregate
Amount Beneficially Owned by Each Reporting Person
Camber Capital
Management LLC
– 2,500,000
shares

10. Check if the Aggregate Amount in Row (9) Excludes Certain
Shares       ☐
11. Percent of
Class Represented by Amount in Row (9)
Camber Capital
Management LLC

7.13%
12. Type of
Reporting Person
Camber Capital
Management LLC – 00 (Limited Liability Company)
 
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