Rotterdam, 17 March 2026

Pryme halted its testing program at Pryme One 
 
Pryme (the "Company") has halted its testing program this past weekend as a
result of a repeated loss of containment through the connection of the discharge
valve to the main body of the reactor despite the recent repairs and
improvements made to the reactor discharge valve assembly. This recurrence comes
after comparable issues were encountered in December 2025 and early February
this year. 

Renewed evaluation and subsequent repair of the discharge valve assembly, to
restore full mechanical integrity, require the reactor to be cooled down. The
process of cooling down, evaluation of the root cause, implementing further
repairs and heating up again of the installation take their time and the Company
does not expect production to restart before the middle of April 2026. Pryme
will inform the market when the testing program is resumed. 
 
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