13D Filing: Delphi Ventures VIII LP and Karyopharm Therapeutics Inc. (KPTI)

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Page 10 of 12 – SEC Filing

CUSIP NO.   48576U106 13D Page 10 of 12

SIGNATURES

After reasonable inquiry and to the best of my
knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

Date: June 6, 2017

DELPHI VENTURES VIII, L.P.
By:   Delphi Management Partners VIII, L.L.C.
General Partner
By: /s/ Matthew T. Potter
Name: Matthew T. Potter
Title: Chief Financial Officer/Attorney-In-Fact
DELPHI BIOINVESTMENTS VIII, L.P.
By:   Delphi Management Partners VIII, L.L.C.
General Partner
By: /s/ Matthew T. Potter
Name: Matthew T. Potter
Title: Chief Financial Officer/Attorney-In-Fact
DELPHI MANAGEMENT PARTNERS VIII, L.L.C.
By: /s/ Matthew T. Potter
Name: Matthew T. Potter
Title: Chief Financial Officer/Attorney-In-Fact

* Signed pursuant to a Power of Attorney already
on file with the appropriate agencies.

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