HYDROCARBON DYNAMICS LIMITED — Major Shareholding Notification 2013

Mar 21, 2013

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Company Announcements Office Australian Securities Exchange 20 Bridge Street Sydney NSW 2000

22 March 2013

Dear Sir,

Pryme Energy Limited (Pryme) (ASX Code PYM) Substantial shareholding notices

Please find attached substantial shareholding notices received from the two substantial shareholders of the Company – Belmont Park Investments Pty Limited and Panorama Ridge Pty Limited.

Pryme Energy Limited advises that the shareholding of the substantial shareholders has not changed; these notices are being lodged as a result of the dilution of their shareholding following the recent private placement by Pryme.

Yours sincerely,

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Swapna Keskar Company Secretary

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