Avantium progresses toward FDCA Flagship Plant start-up, strengthens commercial and licensing momentum, and prepares financing package for next growth phase

Key Business Highlights

Status of the start – up activities at the FDCA Flagship Plant:
o The oxidation unit of the FDCA Flagship Plant has been successfully commissioned, following the start – up of the utility systems and sugar dehydration unit, while commissioning activities for the purification unit are being finalized
o For the remainder of 2026, Avantium will focus on full FDCA Flagship Plant start – up and production of the first batches of FDCA, completing qualification, and preparing for
commercial sales under existing offtake agreements, expected to commence at the end of 2026

Commercial momentum further strengthened for FDCA and PEF :
o 22 offtake agreements have been secured to date for material to be produced in the FDCA
Flagship Plant
o 15 ca pa city reservations have been secured to date, representing more than 150 kilotonnes
of FDCA and PEF, to be produced in future licensed production facilities
o Multiple potential partners across Europe, Asia and North America are engaged in licensing
discussions
o Strong regulatory momentum in Europe and beyond, supporting the adoption and use of PEF in a variety of applications
Organization strengthened with the appointment of Floris Hekster as Chief Operations Officer (COO)
Strategic focus sharpened :
o In May, Avantium announced the divestment of the intellectual property of Ray Technology®
to UPM
o In July, the Company announced the spin – out of its Volta Technology into an independent
company, Carbeau
o Avantium is well – advanced in the process of spinning out Parana Technology into an
independent company, Parana Materials B.V.
o Further investments in Dawn Technology® will be stopped

Key Financial Developments

Revenue for the first half of 2026 was €4.7 million (H 1 2025: €6.7 million). The decline is primarily due to lower sales in the R&D Solutions business
EBITDA for HY 2026 was € – 18. 8 million (H 1 2025: € – 18.5 million)
Cash position was €23.9 million as at 30 June 2026 (31 December 2025 : €57.5 million)
The titanium welding remediation program, completed in April 2026, caused a delay in the start – up of the FDCA Flagship Plant, resulting in a corresponding shift in expected revenues. With the Plant now further progressed toward start – up, the Company has greater visibility on its funding requirements and the additional capital needed to support ongoing operations, and the continued commercialization and licensing of its YXY® Technology for FDCA and PEF

Key Funding Update

Avantium is in dialogue with the NOM on the previously announced government – related investment initiative, consisting of a proposed €20 million convertible loan from the NOM (the Investment and Development Agency for the Northern Netherlands), acting

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You may read the complete press release under https://newsroom.avantium.com/download/938738f7-2da3-483e-b2cf-c6e2f266d71c/20260819avantiumfirsthalf2026businessandfinancialupdate.pdf

About Avantium

Avantium is a pioneering commercial-stage company focused on renewable & circular polymer materials. Avantium develops and commercializes innovative technologies for the production of materials based on sustainable carbon feedstocks. The most advanced technology is YXY® Technology that catalytically converts plant-based sugars into FDCA (furandicarboxylic acid), the key building block for the sustainable plastic PEF (polyethylene furanoate). PEF is known under the brand name releaf®, an EU registered trademark of Avantium. Avantium has successfully demonstrated the YXY® Technology at its pilot plant in Geleen, the Netherlands, and is in the process of starting the world’s first commercial plant for FDCA in Delfzijl, the Netherlands. Avantium works in partnership with like-minded companies around the globe to develop revolutionary renewable chemistry solutions from invention to commercial scale.

Avantium’s shares are listed on Euronext Amsterdam and Euronext Brussels (symbol: AVTX). Avantium is incorporated in the Euronext Amsterdam SmallCap Index (AScX). Its offices and headquarters are in Amsterdam, the Netherlands.