Press Release, 11 September 2020

Kuros Convenes Extraordinary General Meeting

Schlieren (Zurich), Switzerland, September 11, 2020 – Kuros Biosciences (SIX: KURN) today announced that it will hold an Extraordinary General Meeting (EGM) of shareholders to seek approval to increase the Company’s ordinary share capital. The EGM will be held at Kuros Biosciences AG, Wagistrasse 25, 8952 Schlieren, Switzerland on 5 October 2020 at 11am CEST.

The share capital increase aims at raising up to around CHF 15 million by issuing up to 9 million newly created ordinary shares. The Company intends to use the net proceeds to accelerate and advance the commercial roll-out of MagnetOs, which based on current performance is expected to become cash flow positive for the Company by the end of 2022. The proceeds shall also allow for further clinical development of Fibrin-PTH, which targets a substantial clinical need in orthopedics and neurosurgery, and potentially a significant commercial opportunity. This includes completion of the STRUCTURE clinical Phase 2 study with the first data expected to be available early 2022, comparing Fibrin-PTH versus local autograft in spine fusion, as well as preparations for Phase 3 clinical development.

The final terms of the share capital increase will depend on, inter alia, the Company’s stock price at the time of pricing and announcement of the capital increase and the interest amongst existing and new equity investors.

Octavian and Ondra LLP are acting as financial advisors to the Company.

The EGM invitation can be downloaded via the following links:

http://kurosbio.com/resources/invitation-to-egm-5-oct-2020-german/

http://kurosbio.com/resources/invitation-to-egm-5-oct-2020-english/

For further information, please contact:

Kuros Biosciences AG

Media & Investors

Michael Grau

Mary-Ann Chang

Chief Financial Officer

LifeSci Advisors

Tel +41 44 733 47 47

+44 7483 284 853

michael.grau@kurosbio.com

mchang@lifesciadvisors.com

About Kuros Biosciences AG

Kuros Biosciences is focused on the development of innovative products for tissue repair and regeneration and is located in Schlieren (Zurich), Switzerland, Bilthoven, The Netherlands and Burlington, MA, U.S. The Company is listed according to the International Financial Reporting Standard on the SIX Swiss Exchange under the symbol KURN. Visit www.kurosbio.comfor additional information on Kuros, its science and product pipeline.

About MagnetOs

MagnetOs bone graft has an advanced submicron surface topography that leads to the formation of bone, rather than scar tissue, following implantation. In preclinical models, MagnetOs preferentially directs early wound healing toward the bone-forming pathway, meaning that bone can be formed even in soft tissues without the need for added cells or growth factors, resulting in an osteoinductive claim in Europe. MagnetOs promotes local bone formation equivalent to current gold standard, autograft. A substantial number of clinically relevant and predictive studies have demonstrated its equivalence to the current gold standard (patient’s own bone, which may not be available in sufficient quantities and/or involves morbidity, costs and pain associated with its harvesting from another healthy site of the patient’s body). MagnetOs is now supported by over two years’ clinical experience since its launch in the United Kingdom in May 2017. For more information, see: www.magnetosbonegraft.com.

About Fibrin-PTH (KUR-113)

Fibrin-PTH (KUR-113) consists of a natural fibrin-based healing matrix with an immobilized targeted bone growth factor (truncated human parathyroid hormone (PTH) analog). Fibrin-PTH (KUR-113) is designed to be applied directly into and around an intervertebral body fusion device as a gel, where it polymerizes in situ. Fibrin-PTH (KUR-113) functions via the well-established mechanism of action of parathyroid hormone; has been demonstrated in animal models of spinal fusion to be comparable to rhBMP-2; and has been shown in preclinical studies to be easy to use and ideal for open or minimally invasive techniques. Fibrin PTH (KUR-113) is an investigational drug/biologic combination product candidate. Fibrin PTH (KUR-113) has been evaluated in animals for use in lumbar interbody fusion. The safety & efficacy of Fibrin PTH (KUR-113) is currently under evaluation for spinal fusion in humans.

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”, “shall” 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.

THIS PRESS RELEASE DOES NOT CONSTITUTE AN OFFER OR INVITATION TO SUBSCRIBE FOR OR PURCHASE ANY SECURITIES. IT IS NOT BEING ISSUED IN COUNTRIES WHERE THE PUBLIC DISSEMINATION OF THE INFORMATION CONTAINED HEREIN MAY BE RESTRICTED OR PROHIBITED BY LAW. IN PARTICULAR, THIS PRESS RELEASE IS NOT BEING ISSUED IN THE UNITED STATES OF AMERICA, THE UNITED KINGDOM AND MEMBER STATES OF THE EUROPEAN ECONOMIC AREA. THIS PRESS RELEASE SHOULD IN PARTICULAR NOT BE DISTRIBUTED TO THE US-ADDRESSES OF UNITED STATES PERSONS OR TO PUBLICATIONS WITH A GENERAL CIRCULATION IN THE UNITED STATES. EVERY CONTRAVENTION OF THESE RESTRICTIONS MAY CONSTITUTE A BREACH OF THE RESPECTIVE SECURITIES LAWS OF THE COUNTRIES MENTIONED ABOVE. IN PARTICULAR, THE SECURITIES OF KUROS BIOSCIENCES AG HAVE NOT BEEN REGISTERED UNDER THE UNITED STATES SECURITIES LAWS AND MAY NOT BE OFFERED, SOLD OR DELIVERED WITHIN THE UNITED STATES OR TO U.S. PERSONS. SECURITIES OF KUROS BIOSCIENCES AG ARE NOT BEING OFFERED TO THE PUBLIC OUTSIDE OF SWITZERLAND.