Secondary Public Offering - Permian Resources Corp

LEI: 213800HAZOW1AWRSZR47

15 September 2025

Riverstone Energy Limited (the "Company" or "REL")

Secondary Public Offering in Permian Resources Corporation

Permian Resources Corporation ("Permian Resources") has announced the commencement of an underwritten public offering of 46,112,899 shares of its Class A common stock by, amongst other stockholders, affiliates of Riverstone Investment Group LLC. Headquartered in Midland, Texas, Permian Resources is a Delaware Basin pure-play E&P company publicly listed on the NYSE.

The pricing of the secondary public offering is expected to be announced shortly.

The Company will participate in the offering.

The proposed offering is being made pursuant to a registration statement previously filed by Permian Resources with the U.S. Securities and Exchange Commission (the "SEC") that became automatically effective upon filing on November 8, 2023.

This announcement shall not constitute an offer to sell or a solicitation of an offer to buy shares of Class A common stock or any other securities, nor shall there be any sale of securities in any state or jurisdiction in which such offer, solicitation or sale would be unlawful without registration or qualification under the securities laws of any such state or jurisdiction.

Media Contacts

For Riverstone Energy Limited: [email protected]

Deutsche Numis - Corporate Broker:

Hugh Jonathan

Matt Goss

+44 (0) 20 7260 1000

Ocorian Administration (Guernsey) Limited - Company Secretary:

Birgitte Horn

[email protected]