Mosman Oil Gas Regulatory News (MSMN)

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

Mosman Oil & Gas Ltd

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

HSBC Holdings plc

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

HSBC Bank plc

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

4th July 2016

6. Date on which issuer notified:

6th July 2016

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

Below 5%

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

AU0000XINET1

10,955,010

10,955,010

10,405,010

10,405,010

Below Disclosure Threshold

4.826%

Below Disclosure Threshold

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

Below Disclosure Threshold

Below Disclosure Threshold

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

Below Disclosure Threshold

Nominal

Delta

Below Disclosure Threshold

Below Disclosure Threshold

Total (A+B+C)

Number of voting rights

Percentage of voting rights

10,405,010

4.826%

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

HSBC Holdings PLC

-HSBC Bank Plc 4.826 %

Proxy Voting:

10. Name of the proxy holder:

NA

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

NA

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

NA

13. Additional information:

None

14. Contact name:

Sanjeev Kalha

15. Contact telephone number:

(central.compliance.disclosures@hsbc.com ,

sanjeev.kalha@hsbcgroup.com ,)