TR-1: NOTIFICATION OF MAJOR INTEREST IN SHARESi
   
1. Identity of the issuer or the underlying issuer
of existing shares to which voting rights are
attached:
ii
SUMMIT THERAPEUTICS PLC
2 Reason for the notification (please tick the appropriate box or boxes):
An acquisition or disposal of voting rights x
An acquisition or disposal of qualifying financial instruments which may result in the acquisition of shares already issued to which voting rights are attached  
An acquisition or disposal of instruments with similar economic effect to qualifying financial instruments  
An event changing the breakdown of voting rights  
Other (please specify):    
3. Full name of person(s) subject to the
notification obligation:
iii
ROBERT KEITH
4. Full name of shareholder(s)
 (if different from 3.):iv
 
5. Date of the transaction and date on
which the threshold is crossed or
reached:
v
20 JANUARY 2017
6. Date on which issuer notified: 25 JANUARY 2017
7. Threshold(s) that is/are crossed or
reached:
vi, vii
BELOW 8%, 7%


8. Notified details:
A: Voting rights attached to shares viii, ix
Class/type of
shares


if possible using
the ISIN CODE
Situation previous
to the triggering
transaction
Resulting situation after the triggering transaction
Number
of
Shares
Number
of
Voting
Rights
Number
of shares
Number of voting
rights
% of  voting rights x
Direct Direct xi Indirect xii Direct Indirect
GB00B8DX2616 4,040,610 4,040,610 3,040,610 3,040,610   4.9%  
 
 
B: Qualifying Financial Instruments
Resulting situation after the triggering transaction
Type of financial
instrument
Expiration
date
xiii
Exercise/
Conversion Period
xiv
Number of voting
rights that may be
acquired if the
instrument is
exercised/ converted.
% of voting
rights
AMERICAN DEPOSITORY SHARES
 (ADS)
N/A N/A 1,164,700 1.88%
 
C: Financial Instruments with similar economic effect to Qualifying Financial Instruments xv, xvi
Resulting situation after the triggering transaction
Type of financial
instrument
Exercise price Expiration date xvii Exercise/
Conversion period
xviii
Number of voting rights instrument refers to

 
% of voting rights xix, xx

 
Spreadbet        

89,506
Nominal Delta
.14%  
 
Total (A+B+C)
Number of voting rights Percentage of voting rights
4,294,816 6.92%


9. Chain of controlled undertakings through which the voting rights and/or the
financial instruments are effectively held, if applicable:
xxi
 

 
 
Proxy Voting:
10. Name of the proxy holder:  
11. Number of voting rights proxy holder will cease
to hold:
 
12. Date on which proxy holder will cease to hold
voting rights:
 
 

13. Additional information:


14. Contact name: JOCELYN M. BENNETT
15. Contact telephone number: +41 22 809 9500



This announcement is distributed by Nasdaq Corporate Solutions on behalf of Nasdaq Corporate Solutions clients.
The issuer of this announcement warrants that they are solely responsible for the content, accuracy and originality of the information contained therein.
Source: Summit Therapeutics plc via Globenewswire