Here is a list of workshops related to the ALMA2040 efforts.
Towards an ALMA2040 base concept, Lorentz Center, Leiden, Netherlands, 18-19 March
ALMA2040 Workshop (French community), IAP, Paris, France, 26-27 March
East Asian ALMA Community Workshop: ALMA2040 Science and Technology Perspectives, NAOJ Mitaka, Tokyo, Japan, 15-17 July
ALMA2040 splinter session at the annual meeting of German Astronomical Society, Garching, Germany, 7-11 September
ALMA2040: Science Opportunities in the 2040s, Haus der Astronomie (HdA), Heidelberg, Germany, 19 - 22 May
Scientific Goals and Prospects for ALMA2040, Lorentz Center, Leiden, Netherlands, 24-27 November