X0303 4 2010-09-24 0 0000061398 MAGELLAN PETROLEUM CORP /DE/ MPET 0001468730 bogachev nikolay v 9-3 SECHNEOVSKY PEREULOK MOSCOW 1Z RUS-119034 RUSSIAN FEDERATION 1 0 0 0 Common Stock 2010-09-24 4 S 0 12100 1.8404 D 14324548 I Held by ECP Fund, SICAV-FIS. Common Stock 2010-09-28 4 S 0 62315 1.8515 D 14324548 I Held by ECP Fund, SICAV-FIS. Common Stock 15000 D On September 24, 2010, ECP Fund, SICAV-FIS (the "ECP Fund") (formerly known as YEP I, SICAV-FIS) sold an aggregate of 20,000 shares of the issuer's common stock pursuant to Rule 144. On the date of sale, the reporting person indirectly held a 60.5% equity interest in the ECP Fund. Accordingly, the reporting person's pecuniary interest in the issuer's shares held by the ECP Fund decreased proportionately by 12,100 shares. Following these sales by the ECP Fund, the reporting person beneficially owns 15,000 shares of the issuer's common stock directly and an aggregate of 14,324,548 shares of the issuer's common stock indirectly, of which 13,612,463 shares are held by Young Energy Prize S.A. and 712,085 shares are held by the ECP Fund. On September 28, 2010, the ECP Fund sold an aggregate of 103,000 shares of the issuer's common stock pursuant to Rule 144. On the date of sale, the reporting person indirectly held a 60.5% equity interest in the ECP Fund. Accordingly, the reporting person's pecuniary interest in the issuer's shares held by the ECP Fund decreased proportionately by 62,315 shares. /s/ Nikolay V. Bogachev 2010-10-06