13G Filing: Billionaire David Shaw’s D. E. Shaw & Co. and AMAG Pharmaceuticals Inc. (AMAG)

Page 5 of 6 SEC Filing

(b)

Percent of class:

D. E. Shaw & Co., L.P.:	5.0%
David E. Shaw:	5.0%

(c)

Number of shares to which the person has:

(i)

Sole power to vote or to direct the vote:

D. E. Shaw & Co., L.P.:	-0- shares
David E. Shaw:	-0- shares

(ii)

Shared power to vote or to direct the vote:

D. E. Shaw & Co., L.P.:	1,729,526 shares
David E. Shaw:	1,729,526 shares

(iii)

Sole power to dispose or to direct the disposition of:

D. E. Shaw & Co., L.P.:	-0- shares
David E. Shaw:	-0- shares

(iv)

Shared power to dispose or to direct the disposition of:

D. E. Shaw & Co., L.P.:	1,735,509 shares
David E. Shaw:	1,735,509 shares

David E. Shaw does not own any shares directly. By virtue of David E. Shaw’s position as President and sole shareholder of D. E. Shaw & Co., Inc., which is the general partner of D. E. Shaw & Co., L.P., which in turn is the manager and investment adviser of D. E. Shaw Valence Portfolios, L.L.C., the investment
adviser of D. E. Shaw Oculus Portfolios, L.L.C., and the managing member of (i) D. E. Shaw Investment Management, L.L.C., and (ii)
D. E. Shaw Heliant Adviser, L.L.C., which in turn is the investment adviser of D. E. Shaw Heliant Capital, L.L.C., and by virtue
of David E. Shaw’s position as President and sole shareholder of D. E. Shaw & Co. II, Inc., which is the managing member
of D. E. Shaw & Co., L.L.C., which in turn is the manager of D. E. Shaw Oculus Portfolios, L.L.C. and the managing
member of (i) D. E. Shaw Heliant Manager, L.L.C., which in turn is the manager of D. E. Shaw Heliant Capital, L.L.C., David E. Shaw may be deemed to have the shared power to vote or direct the vote of 1,729,526 shares, and the shared power to dispose or
direct the disposition of 1,735,509 shares, the 1,735,509 shares as described above constituting 5.0% of the outstanding shares
and, therefore, David E. Shaw may be deemed to be the beneficial owner of such shares. David E. Shaw disclaims beneficial
ownership of such 1,735,509 shares.

Item 5.	Ownership of Five Percent or Less of a Class
Not Applicable
Item 6.	Ownership of More than Five Percent on Behalf of Another Person.
Not Applicable
Item 7.	Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on By the Parent Holding Company or Control Person.
Not Applicable
Item 8.	Identification and Classification of Members of the Group
Not Applicable
Item 9.	Notice of Dissolution of Group
Not Applicable
Item 10.	Certification

By signing below, each of D. E. Shaw & Co., L.P.
and David E. Shaw certify that, to the best of such reporting person’s knowledge and belief, the securities referred to
above were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer
of the securities and were not acquired and are not held in connection with or as a participant in any transaction having such
purposes or effect.