Live Nation Inc. bought back 1.6 million of its shares from Irish rock band U2 for $25 million, taking a $19 million loss on the deal, according to a report the Beverly Hills concert promoter filed with regulators Thursday.

As part of a wide-ranging 12-year promotion deal with Live Nation, the rock group in March received 1.6 million Live Nation shares, which were guaranteed to be worth $25 million. U2’s first tour under the Live Nation deal is set to start in 2009.

The company’s share price has fallen roughly 64 percent since then. The shares were sold Wednesday at a market value of $6.1 million, which forced Live Nation to make up the difference, according to the filing and company executives.

Live Nation said in the filing the difference would be made up with cash on hand or borrowings under its current credit facility.

Live Nation shares were up 23 cents, or 6 percent, to $4.24 in morning trading Friday in line with an overall market rally.