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 notification /Amendment

Initial notification

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

Ordinary shares of 10p each.

GB0001500809

b)

Nature of the transaction

Sale of ordinary shares to provide funds in advance of taking up rights

c)

Price(s) and volume(s)

Price(s)

£2.3332 (AH)

£2.2903 (JSN)

Volume(s)

46,100 (AH)

1,745,000 (JSN)

d)

Aggregated information

- Aggregated volume

- Price

46,100 (AH)

1,745,000 (JSN)

£107,560.52 (AH)

£3,996,573.50 (JSN)

e)

Date of the transaction

12 April 2017 (AH)

13 April 2017 (JSN)

f)

Place of the transaction

London Stock Exchange (XLON)