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Regulatory press release

PRYME: Pryme restarts its testing program for Pryme One

Pryme
Pryme restarts its testing program for Pryme One

Rotterdam, 22 December 2025

Pryme (the "Company") has resumed its Pryme One production testing program. The
installation was restarted on 18 December 2025 for production at low levels.
During the testing program phase, there will be intermittent periods from time
to time where production is halted as the Company is planning to implement and
test various alternative improvements to the reactor that may require a reset or
cleaning process before restarting. The Company's emphasis will be on executing
the testing program rather than to maximize oil production. Pryme does not
expect any significant oil production in December, 2025. The Company plans to
issue its next monthly update on the December 2025 production volume on Monday 5
January 2026.

For investor inquiries: ir@pryme-cleantech.com

About Pryme | www.pryme-cleantech.com

Pryme N.V. is an innovative cleantech company focused on converting plastic
waste into pyrolysis oil through chemical recycling on an industrial scale. Its
efficient and scalable technology is based on a proven process that has been
further developed and enhanced with proprietary characteristics. The company has
initialized production at its first plant in the port of Rotterdam, with an
expected nameplate intake capacity of about 26,000 tons of plastic waste
annually. Pryme's ambition is to contribute to a low-carbon circular plastic
economy and to realize the large rollout potential of its technology through the
development of a broad portfolio of owned-operated plants with strategic
partners.

The company is listed on Euronext Growth Oslo.

Pryme can be followed on LinkedIn.

Pryme N.V.
Theemsweg 5, third floor, 3197 KM Botlek Rotterdam, the Netherlands
Phone +31 10 209 2990
Trade register number 75055449
www.pryme-cleantech.com
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