Avantium N.V.

AGM Information • May 11, 2023

Avantium shareholders adopt all resolutions at 2023 Annual General Meeting of Shareholders

AMSTERDAM, 10 May 2023, 18:00 hrs CEST – Avantium N.V., a leading technology company in renewable chemistry, announces that Avantium's shareholders granted the requested approvals on all items on the agenda of today's Annual General Meeting (AGM). This included the adoption of the Company's 2022 financial statements. Mr. Edwin Moses was re-appointed as Chairman of the Supervisory Board. Moreover, Mr. Dirk Van Meirvenne and Mr. Peter Williams were appointed as members of the Supervisory Board. PricewaterhouseCoopers was re-appointed as the external auditor of the Company for the financial year 2023.

The AGM took place on Wednesday 10 May 2023 at Amsterdam Science Park, The Netherlands, where Avantium has offices and laboratories. The shareholders voted with 41% of the total number of shares outstanding on record date.

The agenda items proposed for adoption in the Meeting were voted on as follows:

Agenda item 3

The AGM gave a positive advice on the Remuneration Report 2022.

In favour	Against	Abstained
13,088,294	348,125	4,160,024

Agenda item 4

The Financial Statements for 2022 are adopted.

In favour	Against	Abstained
17,406,471	6,866	183,106

Agenda item 5a

The members of the Management Board are discharged for the performance of their duties in the financial year 2022.

In favour	Against	Abstained
17,354,655	55,095	186,693

Agenda item 5b

The members of the Supervisory Board are discharged for the performance of their duties in the financial year 2022.

In favour	Against	Abstained
17,248,295	160,994	187,154

Agenda item 6

Mr. Edwin Moses is re-appointed as member and Chairman of the Supervisory Board.

In favour	Against	Abstained
16,699,551	713,427	183,465

Agenda item 7

Mr. Dirk Van Meirvenne is appointed as member of the Supervisory Board.

In favour	Against	Abstained
17,404,817	8,229	183,397

Agenda item 8

Mr. Peter Williams is appointed as member of the Supervisory Board.

In favour	Against	Abstained
17,399,317	13,729	183,397

Agenda item 9a

The AGM voted in favour of the award of 85,000 share options upon re-appointment of Mr. Edwin Moses.

In favour	Against	Abstained
10,876,528	2,490,306	4,229,609

Agenda item 9b

The AGM voted in favour of the award of 30,000 share options upon appointment of Mr. Dirk Van Meirvenne.

In favour	Against	Abstained
10,876,706	2,490,128	4,229,609

Agenda item 9c

The AGM voted in favour of the award of 30,000 share options upon appointment of Mr. Peter Williams.

In favour	Against	Abstained
10,876,706	2,490,128	4,229,609

Agenda item 10a

The AGM designated the Management Board to issue up to 4% ordinary shares and to exclude preemptive rights in connection with the Company's long term incentive and share-based compensation plans for its employees, management team and Management Board.

In favour	Against	Abstained
17,346,242	67,238	182,963

Agenda item 10b

The AGM voted in favour of the designation of the Management Board to grant rights to subscribe for 0.34% ordinary shares and to exclude pre-emptive rights, in connection with the Company's long term incentive and share-based compensation plans, in view of certain one-off fixed awards of share options to three Supervisory Board members upon, respectively, their re-appointment and appointment.

In favour	Against	Abstained
10,977,845	2,455,085	4,163,513

Agenda item 11

PricewaterhouseCoopers Accountants N.V. is appointed as external auditor for the financial year 2023.

In favour	Against	Abstained
17,211,062	207,889	177,492

About Avantium

Avantium is a leading technology development company and a frontrunner in renewable chemistry. Avantium develops novel technologies based on renewable carbon sources as an alternative to fossilbased chemicals and plastics. The company currently has three technologies at pilot and demonstration phase. The most advanced technology is the YXY® plant-to-plastics–technology that catalytically converts plant-based sugars into FDCA (furandicarboxylic acid), the key building block for the sustainable plastic PEF (polyethylene furanoate). Avantium has successfully demonstrated the YXY® Technology at its pilot plant in Geleen, the Netherlands, and has started construction of the world's first commercial plant for FDCA in 2022, with planned large-scale production of PEF in 2024. The second technology is Ray Technology™ and catalytically converts industrial sugars to plant-based MEG (mono-ethylene glycol) and plant-based MPG (mono-propylene glycol): plantMEG™ and plantMPG™. Avantium is scaling up its Ray Technology™ and the demonstration plant in Delfzijl, the Netherlands opened in November 2019. The third technology is called the Dawn Technology™ that converts non-food biomass into industrial sugars and lignin in order to help transition the chemicals and materials industries to non-fossil resources. In 2018, Avantium opened the Dawn Technology™ pilot biorefinery in Delfzijl, the Netherlands. Avantium also provides R&D solutions in the field of sustainable chemistry and is the leading provider of advanced catalyst testing technology and services to accelerate catalyst R&D. Avantium works in partnership with like-minded

companies around the globe to create 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.

For more information:

Caroline van Reedt Dortland, Director Communications +31-20-5860110 / +31-613400179, mediarelations@avantium.com / ir@avantium.com