Director/PDMR Shareholding

1

Details of the person discharging managerial responsibilities/person closely associated

a)

Name

Aidan Heavey ("AH")

JSN Investments Limited ("JSN")

2

Reason for the notification

a)

Position/status

CEO (AH)

A person closely associated with AH (JSN)

b)

Initial notifications /Amendments

Initial notifications

3

Details of the issuer, emission allowance market participant, auction platform, auctioneer or auction monitor

a)

Name

Tullow Oil plc

b)

LEI

2138003EYHWO75RKS857

4

Details of the transaction(s): section to be repeated for (i) each type of instrument; (ii) each type of transaction; (iii) each date; and (iv) each place where transactions have been conducted

a)

Description of the financial instrument, type of instrument

Identification code

(1) Deferred Share Bonus Plan 2005 share options in respect of ordinary shares of 10p each. (2) Ordinary shares of 10p each.

GB0001500809

b)

Nature of the transactions

(1) Exercise of options awarded under the Deferred Share bonus Plan 2005 and subsequent sale of shares (AH)

(2) Sale of ordinary shares (JSN)

c)

Price(s) and volume(s)

Price(s)

(1) £2.2873 (AH)

(2) £2.26522 (JSN)

Volume(s)

(1) 111,298 (AH)

(2) 222,698 (JSN)

d)

Aggregated information

- Aggregated volume

- Price

(1) 111,298 (AH)

(2) 222,698 (JSN)

(1) £254,571.92 (AH)

(2) £504,459.96 (JSN)

e)

Date of the transactions

22 August 2016

f)

Place of the transactions

London Stock Exchange (XLON)