Participation in Conference and Update on Dubhe-1

Pantheon Resources plc (AIM: PANR, OTCQX: PTHRF) ("Pantheon" or the "Company"), the oil and gas company developing the Kodiak and Ahpun oil fields immediately adjacent to pipeline and transportation infrastructure on Alaska's North Slope, announces that Max Easley, Pantheon's Chief Executive Officer, will be attending the upcoming 46th Annual Alaska Resources Conference on November 13, 2025.

Max will be participating in the Oil and Gas Industry Update Panel, planned for:

Date: Thursday, November 13, 2025

Time: 2:30 p.m. Alaska time

Operational Update:

Well clean-up operations are ongoing at Dubhe-1. It remains early in the flowback process with, as expected, initial production overwhelmingly dominated by previously injected stimulation fluids. Thus far, only 20% of the injected water has been recovered with steady gas production and intermittent production of light oil. It is anticipated that the well will continue to clean up in the coming weeks before a representative rate can be determined from the reservoir.

Max Easley, Chief Executive Officer, commented: "I look forward to participating in the Alaska Resources Conference and engaging with industry participants as we advance development on the North Slope. With the successful completion of the Dubhe-1 stimulation and ongoing well clean-up operations, we are entering an important phase in demonstrating the commercial potential of Ahpun. I welcome the opportunity to share our industry insights with the broader Alaska resource community, and we will be providing the market with separate updates in due course as we progress through the ongoing testing programme."

Registration is required for conference participation. For more information, please contact MZ Group at PTHRF@mzgroup.us.