- AMS Special Session Singer-Hopf Conjecture in Geometry and Topology, March 18-19, 2023, Georgia Institute of Technology, Atlanta, GAProvidence, Rhode Island : American Mathematical Society, [2025]
- AMS Special Session on Equivariant Cohomology, March 19-20, 2022, virtualProvidence, Rhode Island : American Mathematical Society, [2024]
- AMS special session, higher atructures in topology, geometry and physics, March 26-27, 2022, virtualProvidence, Rhode Island : American Mathematical Society, [2024], © 2024