Ithaca Energy (LSE:ITH) has confirmed that it will join the FTSE 100 Index, with the change taking effect from 21 September 2026.
The inclusion follows the company’s expansion since its listing on the London Stock Exchange in November 2022, including growth through acquisitions and investment in its existing portfolio.
Ithaca Energy has expanded its UK Continental Shelf operations during this period, including through its business combination with Eni UK.
Company Cites Increased Scale Following Portfolio Expansion
Management said entry into the FTSE 100 reflects the increased scale of the business and its work to optimise operations and deliver returns to shareholders.
FTSE 100 membership also places Ithaca Energy within an index followed by institutional investors and investment products that track or benchmark against the index.
The company did not provide financial guidance or announce changes to its operating strategy as part of the FTSE 100 inclusion announcement.
Ithaca Energy’s UK Continental Shelf Operations
Ithaca Energy is a UK independent oil and gas exploration and production company focused on the UK Continental Shelf.
According to the company, it is the second-largest independent producer in the UK Continental Shelf and has the largest resource base among UK independents. Its portfolio includes interests in six of the ten largest UKCS fields and two of the region’s largest pre-development projects.
The company has expanded through a combination of investment in its existing assets and acquisitions, including its combination with Eni UK.
Ithaca Energy also has an emissions-reduction strategy under which it is targeting net zero ahead of the timetable established by the North Sea Transition Deal.

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