merger. However, this collapsed due to resistance from Austrian MPs. OMV increased its stake in Hungarian oil group MOL to 20.2% in 2007. OMV then sold its entire stake in March 2009 after MOL rejected a takeover bid in 2008 and the European Commission imposed tough restrictions for an approval of the deal. In late 2011, OMV acquired the stake held by Dogan Holding in Petrol Ofisi, which further increased its stake in the company to 95.75%. In 2012, the Domino-1 well in the Romanian Black Sea exploration license Neptun was the most significant discovery in that year, which has the potential to be OMV's most important gas discovery ever. On October 31, 2013, the acquisition deal with Norwegian Statoil containing participations in oil and gas fields and in development projects in Norway and the UK was closed. With 2.65 bn USD, this then was the largest transaction in OMV's history. A divestment agreement for the 45% stake in Bayernoil was signed in December 2013. The sale was closed in June 2014. In 2015 OMV increased its interest in Petrol Ofisi to 100%,. Two years later, in 2017, OMV sold Petrol Ofisi to Vitol Group In 2017, OMV – together with ENGIE, Shell, Uniper and Wintershall – signed financing agreements with Nord Stream 2 AG to build the 1,200 km Nord Stream 2 gas pipeline from Russia to Germany. In September 2018, OMV became the only Austrian company listed on the Dow Jones Sustainability Index. In January 2019, OMV took a stake of 50% in the joint venture "SapuraOMV Upstream Sdn. Bhd.", a leading oil and gas company in Malaysia. In January 2019, OMV signed an agreement to acquire a 15% stake in ADNOC Refining (Abu Dhabi National Oil Company) in Abu Dhabi. In March 2020, OMV increased its holding in Borealis to 75%, thereby transforming OMV from a pure oil and gas company into a gas, oil and chemicals group. At the end of 2020, OMV started up Austria's then largest photovoltaic plant with 11.4 MWp in Schönkirchen (Lower Austria). On May 31, 2021, OMV and Verbund close purchase of 51% interest in Gas Connect Austria. On June 1, OMV appoints Alfred Stern as new CEO. On June 8, OMV and MOL Group reach agreement for MOL Group to acquire OMV Slovenia. On March 5, 2022, OMV announces to no longer pursues investments in Russia. In December 2022, it