As of 2022, the Prime Minister's Office of Finland is the largest shareholder in the company, owning 35.91% of shares.

In 1994, Neste's polyolefin production was separated into Borealis, a joint venture with the Norwegian Statoil.

[6] In 1998, Neste merged with the power company Imatran Voima Oy to create Fortum Oyj.

[19] Neste Oil Corporation was listed on the Helsinki Stock Exchange in June 2005.

[21] In the same year, the entire bus fleet of Helsinki Region Transport switched fully to diesel produced using NEXBTL technology.

In 2019, the research program restarted to investigate the production of aviation fuel from algae and municipal solid waste.

However, coming second in a bid for European Investment Bank startup funding led to the cancellation of this project in 2012.

[31] Neste's self-service station chain in Poland was sold to Royal Dutch Shell in April 2013.

[26] [38] In June, Neste and LyondellBasell announced the commercial-scale production of bio-based plastic from renewable materials.

[39] [40][41] In March 2020, Neste invested in German Sunfire, a company developing high-temperature electrolysis technology.

[42] In September, Neste sold its 49.99% stake in Nynas to Bitumina Industries, and began closure-related negotiations for the Naantali refinery.

[45] As part of the cooperation, Neste produces hydrocarbons from renewable raw materials as a feedstock to manufacture phenol by Borealis.

Phenol is used by Covestro to produce polycarbonate plastics, which would primarily be used for car headlights and window coatings.

[53][54][55] Neste's production facility in Singapore is the largest renewable diesel refinery in the world, with an annual capacity of 1.1 million metric tonnes.

[58] Since 2016, Neste has published information about all its crude palm oil suppliers on its website.

[79] In 2018 Biofuelwatch stated in their annual report that Neste meets EU sustainability standards for biofuels by sourcing palm oil from older plantations, commonly ones for which rainforest was destroyed before 2008.

However, it cannot guarantee that all of its crude palm oil is free of effects from more recent or ongoing deforestation.

[85] Neste also attempted to shut down a parody website launched by Greenpeace;[86][87] however, the World Intellectual Property Organization rejected the trademark-based complaint, since the page is noncommercial, gives no economical benefit, is not misleading, and follows the guidelines of freedom of speech.

[88] In November 2022, it was announced Neste had acquired the used cooking oil (UCO) collection and aggregation business and related assets in the US from Crimson Renewable Energy Holdings, LLC.