The guarantee, disclosed in a filing on Monday, seeks to allay the Warner Bros board’s doubts about Paramount’s financing and the lack of full Ellison family backing, which had pushed it toward the competing cash-and-stock offer from Netflix.

Warner Bros shares closed up 3.5%, while Paramount added over 4%.

Warner Bros said it will review and consider Paramount’s revised terms, adding that the board is not modifying its recommendation with respect to the Netflix deal.

Netflix did not immediately respond to requests for comment.

Paramount said the amended terms do not change the $30-per-share all-cash offer, even as the fight for Hollywood’s sought-after assets heats up, with control of Warner Bros’ vast library offering a decisive edge in the streaming wars.

“I doubt many Warner Bros shareholders that are on the fence or planning to vote no were holding out due to issues the revised bid addresses, such as a guarantee from Larry Ellison on the funding front,” said Seth Shafer, principal analyst at S&P Global.

As part of the revised terms, Ellison also agreed not to revoke the family trust or transfer its assets during the pendency of the transaction, the filing showed.

Paramount said it has raised its regulatory reverse termination fee to $5.8 billion from $5 billion to match the competing transaction and extended the expiration date of its tender offer to January 21, 2026.

The bid follows Warner Bros asking its shareholders to reject the $108.4 billion offer from Paramount for the whole company, including cable TV assets, due to doubts over its financing and the lack of a full guarantee from the Ellison family.

But Warner Bros investors, including the fifth largest shareholder Harris Associates, have said they would be open to revised offers from Paramount if it presents a superior bid and addresses issues with deal terms.

Under the Netflix agreement, Warner Bros would owe Netflix $2.8 billion as a breakup fee if it walks away from that deal.

For either suitor, winning shareholder support is only the first hurdle, as both deals would face intense antitrust scrutiny in the USand Europe.