TULLOW OIL PLC

Major Shareholding Notification • Mar 10, 2014

National Storage Mechanism | Additional information

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RNS Number : 9369B

Tullow Oil PLC

10 March 2014

TR-1: NOTIFICATION OF MAJOR INTEREST IN SHARES
1. Identity of the issuer or the underlying issuer of existing shares to which voting rights are attached:			Tullow Oil 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:		OppenheimerFunds, Inc
4. Full name of shareholder(s) (if different from 3.):
5. Date of the transaction and date on which the threshold is crossed or reached:		March 04, 2014
6. Date on which issuer notified:		March 07, 2014
7. Threshold(s) that is/are crossed or reached:		5.00% (increased to 5.45%)

8. Notified details:
A: Voting rights attached to shares
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
Direct		Direct		Indirect	Direct			Indirect
GB0001500809	42,743,893			42,743,893			49,582,679				49,582,679				5.45%
B: Qualifying Financial Instruments
Resulting situation after the triggering transaction
Type of financial instrument			Expiration date		Exercise/ Conversion Period					Number of voting rights that may be acquired if the instrument is exercised/ converted.				% of voting rights
C: Financial Instruments with similar economic effect to Qualifying Financial Instruments
Resulting situation after the triggering transaction
Type of financial instrument		Exercise price		Expiration date		Exercise/ Conversion period			Number of voting rights instrument refers to				% of voting rights
													Nominal			Delta
Total (A+B+C)
Number of voting rights								Percentage of voting rights
49,582,679								5.45%

9. Chain of controlled undertakings through which the voting rights and/or the

financial instruments are effectively held, if applicable:

OppenheimerFunds, Inc. ("OFI") is a registered investment advisor with the U.S. SEC. Its ultimate parent company, Massachusetts Mutual Life Insurance Company, qualifies for disaggregation under FSA regulations. The shares of the issuer are held by investment accounts managed by OFI and its subsidiary, OFI Global Asset Management, Inc. ("OFIG").

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:

	Richard Taylor (Deputy Company Secretary, Tullow Oil plc)

15. Contact telephone number:

0203 249 9000

This information is provided by RNS

The company news service from the London Stock Exchange

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