Holding(s) in Company

For filings with the FCA include the annex

For filings with issuer exclude the annex

TR-1: NOTIFICATION OF MAJOR INTEREST IN SHARESi

1. Identity of the issuer or the underlying issuerof existing shares to which voting rights areattached: ii

Mosman Oil and Gas Limited

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 thenotification obligation: iii

Aorere Resources Limited

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

5. Date of the transaction and date onwhich the threshold is crossed orreached: v

29 April 2015

6. Date on which issuer notified:

4 May 2015

7. Threshold(s) that is/are crossed orreached: vi, vii

Shareholding reduced from 10.06% to 8.67 %

8. Notified details:

A: Voting rights attached to shares viii, ix

Class/type ofshares

if possible usingthe ISIN CODE

Situation previousto the triggeringtransaction

Resulting situation after the triggering transaction

NumberofShares

NumberofVotingRights

Numberof shares

Number of votingrights

% of voting rights x

Direct

Direct xi

Indirect xii

Direct

Indirect

Ordinary

10,238,700

10,238,700

8,738,700

8,738,700

8.67

B: Qualifying Financial Instruments

Resulting situation after the triggering transaction

Type of financialinstrument

Expirationdate xiii

Exercise/Conversion Period xiv

Number of votingrights that may beacquired if theinstrument isexercised/ converted.

% of votingrights

C: Financial Instruments with similar economic effect to Qualifying Financial Instruments xv, xvi

Resulting situation after the triggering transaction

Type of financialinstrument

Exercise price

Expiration date xvii

Exercise/Conversion period xviii

Number of voting rights instrument refers to

% of voting rights xix, xx

Nominal

Delta

Total (A+B+C)

Number of voting rights

Percentage of voting rights

8,738,700

8.67

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

Proxy Voting:

10. Name of the proxy holder:

Not applicable

11. Number of voting rights proxy holder will ceaseto hold:

12. Date on which proxy holder will cease to holdvoting rights:

13. Additional information:

14. Contact name:

Chris Castle

15. Contact telephone number:

+64 21 558 185

C: Additional information

For notes on how to complete form TR-1 please see the FCA website.

Mosman Oil & Gas Limited

John W Barr, Executive Chairman

Andy Carroll, Technical Director

[email protected]

[email protected]

SI Capital Limited (Joint Broker)

Nick Emerson/Andy Thacker

+44 (0) 1483 413500

ZAI Corporate Finance Limited (NOMAD)

Tom Price/John Simpson

+44 (0) 20 7060 2220

SP Angel Corporate Finance LLP (Joint Broker)

Stuart Gledhill / Richard Hail

+44 (0) 20 3470 0470

Gable Communications Limited

John Bick/Justine James

+44 (0) 20 7193 7463

[email protected]