Kuros Biosciences announces changes in the Board of Directors

Ad-hoc announcement pursuant to Article 53 of the SIX listing rules

Kuros Biosciences announces changes in the Board of Directors

Schlieren (Zurich), Switzerland, September 4, 2025 – Kuros Biosciences (“Kuros” or the “Company”) a leader in next generation bone healing technologies, announces that Albert Arp has decided to resign from the Board of Directors with immediate effect for personal and professional reasons.

Oliver Walker was appointed as Chair of the Audit and Risk Committee. Kimberley Elting was appointed as member of the Audit and Risk Committee and as member and Chair of the Compensation and Nomination Committee.

The Board of Directors respects Albert Arp’s decision and would like to thank him for his services and wishes him all the best for the future.

For further information, please contact:
Kuros Biosciences AG

About MagnetOs
Growing bone with MagnetOs^TM gives surgeons confidence where it matters most – delivering predictable fusion outcomes.¹ In a Level I human clinical study published in Spine, MagnetOs achieved nearly twice the fusion rate (79% vs. 47%) of autograft in posterolateral fusions (PLFs).¹ Among active smokers – who made up 1 in 5 patients – the fusion difference between MagnetOs and autograft was even more dramatic.^*†1,2 MagnetOs grows bone on its own thanks to NeedleGrip^TM – a proprietary submicron surface technology that harnesses the immune system to stimulate bone growth, without added cells or growth factors.^‡§3-8 Ready-to-use, easy to mold, and reliably staying put⁹, MagnetOs carries no intrinsic risk of human tissue-related disease transmission and is FDA cleared for use throughout the spine, including interbody procedures. ^¶5-8

Indications Statement
Please refer to the instructions for use for your local region for a full list of indications, contraindications, warnings, and precautions.

About Kuros Biosciences
Kuros Biosciences is on a mission to discover, develop and deliver innovative biologic technologies. With locations in the United States, Switzerland and the Netherlands, the company is listed on the SIX Swiss Exchange. The company’s first commercial product, MagnetOs^TM, is a unique advanced bone graft that has already been used across four continents. For more information on the company, its products and pipeline, visit kurosbio.com.

Forward Looking Statements
This media release contains certain forward-looking statements that involve risks and uncertainties that could cause actual results to be materially different from historical results or from any future results expressed or implied by such forward-looking statements. You are urged to consider statements that include the words “will” or “expect” or the negative of those words or other similar words to be uncertain and forward-looking. Factors that may cause actual results to differ materially from any future results expressed or implied by any forward-looking statements include scientific, business, economic and financial factors. Against the background of these uncertainties, readers should not rely on forward-looking statements. The Company assumes no responsibility for updating forward-looking statements or adapting them to future events or developments.

* 19 of initial 100 patients were active smokers.
† Radiographic fusion data of the smoker subgroup were not statistically analyzed as a subgroup and were not included in the peer-reviewed publication of the study.^2
‡ Results from in vitro or in vivo laboratory testing may not be predictive of clinical experience in humans. For important safety and intended use information please visit kurosbio.com. 
^§ MagnetOs is not cleared by the FDA or TGA as an osteoinductive bone graft. 
^¶ MagnetOs must also be used with an intervertebral body fusion device cleared by FDA for use with a bone void filler. MagnetOs Flex Matrix must be hydrated with BMA & mixed with autograft in posterolateral spine & intervertebral disc space. MagnetOs Granules must be hydrated with blood in the intervertebral disc space.

1. Stempels, et al. Spine. 2024;49(19):1323-1331. 
2. van Dijk, LA. 24th SGS Annual Meeting (Swiss Society of Spinal Surgery). Basel, Switzerland. Aug 2024. 
3. van Dijk, et al. eCM. 2021;41:756-73.  
4. van Dijk, et al. J Immunol Regen Med. 2023;19:100070. 
5. Instructions for Use (IFU) MagnetOs Granules.  
6. Instructions for Use (IFU) MagnetOs Putty.  
7. Instructions for Use (IFU) MagnetOs Easypack Putty.  
8. Instructions for Use (IFU) MagnetOs Flex Matrix. 
9. Data on file. MagnetOs Putty and MagnetOs Easypack Putty. 
   
   

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