Karolinska Development’s Chairman of the Board resigns at his own request

STOCKHOLM, SWEDEN – December 11, 2024. Karolinska Development AB (Nasdaq Stockholm: KDEV) today announces that the company’s Chairman of the Board, Professor Hans Wigzell, has decided to resign from his position. The Board of Directors will immediately initiate a process to appoint a new Chairman.

Hans Wigzell has been an instrumental force in Karolinska Development ever since the company was founded. He has served as Chairman of the Board during several periods, most recently since the 2024 Annual General Meeting.

For further information, please contact:

Viktor Drvota, CEO, Karolinska Development AB
Phone: +46 73 982 52 02, e-mail: viktor.drvota@karolinskadevelopment.com

Johan Dighed, General Counsel and Deputy CEO, Karolinska Development AB
Phone: +46 70 207 48 26, e-mail: johan.dighed@karolinskadevelopment.com

This information is information that Karolinska Development is obliged to make public pursuant to the EU Market Abuse Regulation. The information was submitted for publication, through the agency of the contact persons set out above, at 2024-12-11 11:45 CET.

TO THE EDITORS

About Karolinska Development AB

Karolinska Development AB (Nasdaq Stockholm: KDEV) is a Nordic life sciences investment company. The company focuses on identifying breakthrough medical innovations in the Nordic region that are developed by entrepreneurs and leadership teams. The company invests in the creation and growth of companies that advance these assets into commercial products that are designed to make a difference to patient’s lives while providing an attractive return on investment to shareholders.

Karolinska Development has access to world-class medical innovations at the Karolinska Institutet and other leading universities and research institutes in the Nordic region. The company aims to build companies around scientists who are leaders in their fields, supported by experienced management teams and advisers, and co-funded by specialist international investors, to provide the greatest chance of success.

Karolinska Development has a portfolio of eleven companies targeting opportunities in innovative treatment for life-threatening or serious debilitating diseases.

The company is led by an entrepreneurial team of investment professionals with a proven track record as company builders and with access to a strong global network.

For more information, please visit www.karolinskadevelopment.com.

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• KD Ordfo¨rande 2024-12-11 ENG