Holding(s) in Company

TR-1: Notifications of Major Interests in Shares

1. Identity of the issuer or the underlying issuer of existing shares to which voting rights are attached:

Nighthawk Energy plc

2. Reason for notification (yes/no)

An acquisition or disposal of voting rights

X

An acquisition or disposal of financial instruments which may result in the acquisition of shares already issued to which voting rights are attached

An event changing the breakdown of voting rights

Other (please specify):______________

3. Full name of person(s) subject to notification obligation:

Johan Claesson

4. Full name of shareholder(s) (if different from 3):

1) Johan Claesson

2) CA Fastigheter AB

5. Date of transaction (and date on which the threshold is crossed or reached if different):

31 October 2011

6. Date on which issuer notified:

2 November 2011

7. Threshold(s) that is/are crossed or reached:

13%

8: Notified Details

A: Voting rights attached to shares

Class/type of shares

If possible use 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

Percentage of voting rights

Direct

Direct

Indirect

Direct

Indirect

ORDINARY SHARES

4,496,297

4,496,297

63,665,297

63,665,297

13.93%

B: Financial Instruments

Resulting situation after the triggering transaction

Type of financial instrument

Expiration date

Exercise/ conversion period/date

No. of voting rights that may be acquired (if the instrument exercised/converted)

Percentage of voting rights

Total (A+B)

Number of voting rights

Percentage of voting rights

63,665,297

13.93%

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

Johan Claesson is the direct and indirect owner of more than 50% of Claesson Anderzen AB that owns 100% of CA Fastigheter AB that owns 33,480,797 shares in Nighthawk Energy plc. Mr. Claesson holds 30,184,500 personally.

Proxy Voting:

10. Name of 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:

Johan Claesson

15. Contact telephone name:

0046 70 547 16 36