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

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 Kalon Portfolios, L.L.C. and D. E. Shaw
Special Opportunities Portfolios, 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 D. E. Shaw Heliant Manager, L.L.C., which in turn is the manager of
D. E. Shaw Kalon Portfolios, L.L.C. and D. E. Shaw Special Opportunities Portfolios, L.L.C., David E. Shaw may be deemed to have
the shared power to vote or direct the vote of 5,316,294 shares, and the shared power to dispose or direct the disposition of 5,317,785
shares, the 5,317,785 shares as described above constituting 8.6% 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 5,317,785 shares.

By signing below, each of D. E. Shaw Kalon Portfolios, L.L.C.,
D. E. Shaw Heliant Manager, L.L.C., D. E. Shaw Heliant Adviser, L.L.C., D. E. Shaw & Co., L.L.C., 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.