The ownership change comes as a long-running battle over control of Bumi between its co-founders, Nathaniel Rothschild and Indonesia's Bakrie family, faces a crucial shareholder vote Thursday. Mr. Rothschild, the Bakrie family and Bumi's current board all want to see the Bakrie family exit their stake in Bumi PLC, but they differ on how it should be done.

The Recapital Group, which is comprised of two entities owned by Mr. Roeslani, said Monday it has agreed to sell all of its shares in Bumi to three funds--Avenue Luxembourg S.A.R.L., Flaming Luck Investments Ltd. and Argyle Street Management Ltd--for undisclosed sums.

The executive of U.K. regulator the Takeover Panel said that, unlike Mr. Roeslani, it does not consider the three funds to be acting in concert with another major Bumi investor, the Bakrie Group, so has lifted restrictions on the voting rights of the shares they have acquired. This will give the funds a say Thursday on whether to replace 12 out of Bumi's 14 current board directors, if they manage to get their names onto the company registry by 1800 GMT Tuesday.

The vote was called by Mr. Rothschild, who says Bumi's current board isn't independent enough and hasn't enacted sufficient change in the company.

The U.K. Takeover Panel ruled last year that corporate entities owned by the Bakrie Group, Bumi chairman Samin Tan and Mr. Roeslani were acting in concert and therefore restricted their total voting rights in Bumi to 29.99%, even though their combined stake in the company was more than 60%, according to data provided by FactSet.

Recapital Group said it sold 13.67 million shares to Avenue Luxembourg, which makes investments for a fund managed by Avenu Asia Capital Management LP. It sold 3 million shares to Flaming Luck, which is controlled by the Tanoesoedibjo family of Indonesia. Lastly, it sold 7.54 million shares to funds managed by Argyle Street.

-Write to Alex MacDonald at alex.macdonald@dowjones.com

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