We are pleased to announce the 2025 OpenVT Workshop on Multiscale Model Sharing and Reproducibility, being held as a satellite meeting of the Society of Mathematical Biology (SMB) meeting, on July 13th 2025 at the University of Alberta, Edmonton, Alberta Canada. Building complex multicellular agent-based biological simulations (virtual tissues) in a sharable, extensible and reproducible way is challenging but critical to advancing research and enhancing deployment. This one day workshop will offer tutorials on using popular multicellular modelling frameworks which support rapid simulation construction and distribution and a multicellular model reproducibility hackathon which will explore best practice for model design and distribution. For more details and to sign-up see: https://forms.gle/2uBjsVUMXEwngVwF6.