13G Filing: D. E. Shaw Inches Up Stake in Delek US Holdings, Inc. (DK)

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Page 11 of 11 SEC Filing

SIGNATURE

After reasonable inquiry and to the best of their knowledge
and belief, the undersigned certify that the information set forth in this statement is true, complete and correct. Powers of Attorney,
dated December 16, 2014, granted by David E. Shaw in favor of Nathan Thomas, are attached hereto.

Dated: February 22, 2016

D. E. Shaw Kalon Portfolios, L.L.C.

By: /s/ Nathan Thomas
Nathan Thomas
    Authorized
Signatory
 

D. E. Shaw Heliant Manager, L.L.C.

By: /s/ Nathan Thomas
Nathan Thomas
Authorized
Signatory
D. E. Shaw Heliant Adviser, L.L.C.
By: /s/ Nathan Thomas
Nathan Thomas
Chief
Compliance Officer
D. E. Shaw & Co., L.L.C.
By: /s/ Nathan Thomas
Nathan Thomas
Authorized
Signatory
D. E. Shaw & Co., L.P.
By: /s/ Nathan Thomas
Nathan Thomas
Chief
Compliance Officer
  David E. Shaw
By: /s/ Nathan Thomas
Nathan Thomas
Attorney-in-Fact for David E. Shaw

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