May 23 (Reuters) - Horizon Oil Ltd HZN.AX :
* Major shareholder, IMC Investments Limited has agreed to provide financial support for the refinancing of the company
* Support to address the company's redemption obligations in respect of the US$58.8M 5.5% convertible bonds (bonds) issued in 2011
* Says refinancing arrangements are designed to provide the company with US$60 million of new funding
* Has secured formal undertakings from co's bond holders, in excess of requisite 90% majority, to vote in favour of extension
* Source text for Eikon ID:nASXmk434
*