REC Silicon

Regulatory Filings • Nov 15, 2024

REC Silicon – Qualification Material of Ultra-High Purity Polysilicon Clears Customs

Moses Lake, Washington USA - November 15, 2024: REC Silicon ASA ("REC Silicon" or the "Company") provides an update concerning the qualification process for its ultra-high purity polysilicon from the recently restarted silane-based high-purity granular production facility in Moses Lake, Washington.

As reported on October 21, 2024, qualification material of ultra-high purity polysilicon was delayed with unexpected procedures by customs in the country where the qualification testing will be performed. The qualification material cleared customs and is now available for the third party to test.

Although the testing is expected to commence soon, the exact schedule is contingent upon the third party's own production schedule. The Company continues to work with the customer to determine the new schedule and where possible expedite the qualification test. The Company does not expect to receive the results of the qualification test for a minimum of four weeks but will provide further information as it becomes available.

The qualification process must be completed successfully before the Company is able to make its first shipment of product with a modified specification. As with any qualification process of this sort, the outcome of the testing and hence our ability to deliver product within a certain timeframe, remains a risk.

As a leading producer of silane gases and silicon materials, REC Silicon is well positioned to capitalize on the global megatrends of digitalization, energy transition and energy storage. The Company has developed a strong market position in the Semiconductor industry based on its operations in Butte, Montana. The successful restart of Moses Lake operations will enable REC Silicon to provide ultra-high purity polysilicon to the US solar value chain currently under construction while the Company also expects to supply silane gas in significant volumes for anode materials to a fast-growing battery industry.

Contacts

Nils O. Kjerstad IR Contact Phone: +47 9135 6659 Email: nils.kjerstad@recsilicon.com

About REC Silicon

REC Silicon is a global leader in silane based high purity silicon materials. We combine 40 years of experience and best-in-class proprietary technology to deliver on customer expectations. Our two U.S. based plants have a combined production capacity of more than 30,000 MT of high purity silane gas. Our Signature Silane® based products are used in everyday quality of life technologies, emerging technologies, cutting edge power and memory devices, high-voltage transmission, as well as renewables. REC Silicon is headquartered in Lysaker, Norway and listed on the Oslo stock exchange under the ticker: RECSI.

For more information, go to: www.recsilicon.com

This information is subject to disclosure under the Norwegian Securities Trading Act, §5-12. The information was submitted for publication at 2024-11-15 18:20 CET.

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REC Silicon – Qualification Material of Ultra-High Purity Polysilicon Clears Customs