(Bloomberg) -- Universal Music Group NV has agreed to plan a US share sale by Sept. 15, in order to fulfill an agreement with billionaire Bill Ackman’s hedge fund Pershing Square.

The Amsterdam-listed entertainment company will use reasonable efforts to launch an underwritten offering for the sale of shares owned by Pershing Square, according to a statement Wednesday.

The agreement between Pershing Square and UMG requires that Ackman’s firm sell $500 million of its shares in connection with a US listing, according to a post on Ackman’s X account following UMG’s statement. Pershing Square’s total investment in UMG is worth $3.3 billion, according to Ackman’s post.

Pershing Square believes a US listing will substantially increase the valuation of UMG shares, as well as demand for them from investors who are limited to buying US-listed securities, Ackman wrote. It would also likely attract additional analyst coverage for UMG, and greatly improve liquidity, he wrote.

UMG’s Amsterdam shares rose 1.1% on Wednesday, giving the company a market value of €44.3 billion ($45.6 billion). 

The company’s move follows a dispute with Ackman last year, over whether Pershing Square had the right to require UMG to move its domicile to the US or delist from Euronext Amsterdam. 

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