RockRose

RockRose is a Netherlands-linked oil and gas brand that forms part of the Viaro Energy group, a UK-based independent energy group founded by a team with several decades of industry experience. The Viaro Energy group states that it has working interests in over 60 fields in the UK Continental Shelf (UKCS) and the Netherlands North Sea through its subsidiary companies, with the objective of ensuring continued sustainable energy security from the North Sea for the countries in which it operates. RockRose appears in this structure as the Dutch-facing element of that portfolio, reflected in the Wikidata label 'RockRose (NL) CS1', which describes it as a Netherlands company. The group's portfolio is heavily weighted toward natural gas: more than 75% of assets are natural gas, and more than 70% of the portfolio consists of gas assets, which Viaro describes as a transition energy. Through strategic partnerships in joint-venture fields in the UKCS, the Viaro Energy group contributes up to 9% of total gross daily gas production, with current annual production up to 25,000 boepd. RockRose, as part of this group, participates in that North Sea upstream activity. Viaro Energy itself is London-based and was established by its CEO Francesco Mazzagatti, who has personally operated in the oil and gas sector since 2012, for the purpose of focusing on the North Sea basin. The group relies on the track records of its board and management team to continue expanding its footprint in the North Sea via further acquisitions and organic growth. Alongside core upstream operations, the group has an interest in third-party technology that may assist in decarbonising future upstream oil and gas operations, including strategic investments in third-party nuclear technology providers developing small modular reactors and their application in the oil and gas industry. RockRose therefore sits within a group that operates across the UKCS and the Netherlands North Sea, with a strategy built on acquisitions, joint ventures, and responsible long-term energy investment. Its identity is that of a North Sea upstream oil and gas brand under the Viaro Energy umbrella rather than a standalone listed company.

RockRose is associated with the Netherlands North Sea and appears in public data as 'RockRose (NL) CS1', described as a Netherlands company. It forms part of the Viaro Energy group, a UK-based independent energy group founded by a team with several decades of experience in the industry. Viaro Energy was established by its CEO Francesco Mazzagatti, who has personally operated in the oil and gas sector since 2012, for the purpose of focusing on the North Sea basin. The group is headquartered in London. Through its subsidiary companies, the Viaro Energy group has working interests in over 60 fields in the UK Continental Shelf (UKCS) and the Netherlands North Sea. RockRose represents the Dutch-facing part of that North Sea portfolio. The group's stated objective is to ensure continued sustainable energy security from the North Sea for the countries in which it operates, and its portfolio is heavily gas-weighted: more than 75% of assets are natural gas, and more than 70% of the portfolio consists of gas assets, which the group describes as a transition energy. Through strategic partnerships in joint-venture fields in the UKCS, the Viaro Energy group contributes up to 9% of total gross daily gas production, with current annual production up to 25,000 boepd. The group has pursued growth through acquisitions and organic development. In 2025, Viaro Energy announced the acquisition of Deltic Energy via its main operating subsidiary, strengthening its North Sea portfolio, and acquired Evoterra’s full portfolio of integrated energy, entering the German market and renewables. It also made leadership appointments, including Jillian Owen as Chief Operating Officer and Dave Koon Koon as General Counsel. In the TAQA Bratani trial, the English High Court dismissed all claims against Viaro Energy CEO Francesco Mazzagatti and others. Alongside core upstream operations, the Viaro Energy group has an interest in third-party technology that may assist in decarbonising future upstream oil and gas operations, including strategic investments in third-party nuclear technology providers developing small modular reactors and their application in the oil and gas industry. RockRose, as part of this group, participates in this broader North Sea upstream and energy transition context.

• Viaro Energy acquires Evoterra’s full portfolio of integrated energy and enters the German market and renewables.

• Jillian Owen appointed Head of Transition to Operatorship to lead a major asset acquisition.

• Dave Koon Koon promoted to General Counsel in January 2025.

• Viaro Energy agrees to acquire Deltic Energy via its main operating subsidiary.

• Jillian Owen appointed Chief Operating Officer of Viaro Energy.

Netherlands-facing North Sea upstream oil and gas brand within the Viaro Energy group, focused on gas-weighted assets and responsible long-term energy investment.

• North Sea oil and gas working interests

  Working interests in over 60 fields in the UKCS and Netherlands North Sea through Viaro Energy group subsidiaries.

• Natural gas assets

  More than 75% of the group's assets are natural gas, described as a transition energy.

1. 1Viaro | VIARO ENERGYviaro.co.uk
2. 2About | Viaroviaro.co.uk
3. 3Corporate Governance | Viaroviaro.co.uk
4. 4Company Announcements | Viaroviaro.co.uk
5. 5RockRose (NL) CS1wikidata.org