BIRS Workshop on New Developments in Tensor Categories at BIRS in Banff, Canada, January 25-30, 2025 (co-organized with I. Angiono, A. Czenky, V.Ostrik, and T. Heidersdorf).

MFO Mini Workshop on The Yang–Baxter Equation and Representations of Braid Groups, at MFO in Oberwolfach, Germany, Oct 26-31, 2025 (co-organized with I. Colazzo, E. Rowell, and L. Vendramin).

Special Session on Tensor Categories and Representation Theory at the 2025 AMS Fall Central Sectional Meeting at Saint Louis University, Oct 18-19, 2025 (co-organized with T. Décoppet and B. Spencer). 

2025 SCGCS Workshop & School on Topological Symmetries and Defects in Quantum Field Theory at the SwissMAP Research Station, June 15-27, 2025 (co-organized with J. Brown,  A. Cattaneo, M. Del Zotto, and C. Teleman)

Special Session on Hopf algebras and tensor categories at the 2025 Mathematical Congress of the Americas at IMSA, University of Miami, July 21-24, 2025 (co-organized with I. Angiono and C. Galindo). 

Special Session on Hopf algebras and tensor categories at the 2025 AWM Research Symposyum at University of Wisconsin-Madison, May 16-18, 2025 (co-organized with M.Müller, E. Peters, and A. Watkins).

Hopf25, at ULB, Brussels, 22-26 April 2025, (co-organized with Ana Agore, Stefaan Caenepeel, Kenny De Commer, Paolo Saracco, Špela Špenko, Pedro Vaz, Joost Vercruysee, Leandro Vendramin, and Yinhuo Zhang) 

Special Session on Algebras and Number Theory at the LatMath 2025 at IPAM, UCLA, March 6-8, 2025 (co-organized with A. Barrios).

MATRIX Workshop: Tensor categories, quantum symmetries, and mathematical physics, November 18-29, 2024 (co-organized with  K. Coulembier, J. Fasquel, Z. Fehily, D. Ridout, and J. Tener). 

AIM Workshop on Finite tensor categories: their cohomology and geometry, September 16 - 20, 2024 (co-organized with N. Andruskiewitsch, I. Angiono, and J. Pevtsova).

BIRS Workshop on Skew braces, braids, and the Yang-Baxter equation at BIRS in Banff, Canada, May 5-10, 2024 (co-organized with I. Colazzo, E. Rowell, and L. Vendramin).

IPAM winter workshop Symmetric tensor categories in positive characteristic, January 8-12, 2024 (co-organized with I. Angiono, P. Etingof, C. Negron, and G. Sanmarco).

BIRS Workshop on Subfactors and Fusion (2-)Categories at BIRS in Banff, Canada, December 3-8, 2023 (co-organized with T. Gannon, T. Johnson-Freyd, and D. Penneys).

BIRS Focused research group on Non-Classical Constructions in Tensor Categories and Conformal Field Theory, November 20-December 4, 2022 (co-organized with T. Gannon and A. Schopieray).

Colombian meeting in group theory and its applications at Universidad del Norte (Barranquilla, Colombia), November 24-25, 2022.

Thematic month on Quantum symmetries (October 10th - November 4th) at the 2022 CRM Thematic Semester on Symmetries (co-organized with T. Creutzig, A. Moreau, N. Reshetikhin, D. Ridout).  Our thematic month was supported by NSF grant DMS 2228888

AIM Workshop on "Higher Categories and Topological Orders" at AIM. September 26-30, 2022 (co-organized with J. Bridgeman, T. Osborne, D. Penneys).

2022 Summer workshop on "Higher Symmetry in QFT'' at the Aspen Center for Physics. September 4-18, 2022 (co-organized with C. Córdova, S. Schafer-Nameki, C. Teleman).

Simons Collaboration Summer School and Workshop on "Global Categorical Symmetries" at Perimeter Institute. June 6-17, 2022 (co-organized with I. Bah, M. Del Zotto, T. Jhonson-Freyd, C. Teleman).

AMS Special Session on Quantum Algebra and Quantum Topology at the AMS Sectional Meeting in Purdue University. March 26th-27th, 2022 (co-organized with S. Cui, and T. Yang) - Moved online due to Covid.

AMS Special Session on Categorical Structures in Hopf Algebras and Representation Theory at the AMS Spring Southeastern Sectional Meeting in University of Virginia. March 11th-13th, 2022 (co-organized with A. Czenky, and G. Sanmarco) - Cancelled due to Covid.

AMS Special Session on Hopf Algebras and Tensor Categories at the 2022 Joint Mathematics Meetings in Seattle, January 5th-8th, 2022 (co-organized with S.-H. Ng and H. Tucker) - Moved online and postponed (April 6-9, 2022) due to Covid.

AMS Special Session on Tensor Categories and Applications at the AMS Fall Western Sectional Meeting in Albuquerque, New Mexico. October 23-24, 2021 (co-organized with C. Edie-Michell, and S. Sanford).

Special session on Quantum symmetries  in VI Latin American Congress of Mathematicians (at the Congreso UMALCA 2020), Montevideo, Uruguay, July 20-24 2020 (co-organized with C. Galindo, and L. Vendramin) (postponed until September 14-17th, 2021 due to Covid-19 and will be virtual).