File a C-3 report for each bank deposit made in the previous month and a C-4 report that covers the period through the previous month.  (February and April ballot measure committees have different reporting deadlines.)

Date: 
Repeats every month on the 10 of February, March, May until Mon May 10 2021. Also includes Mon Apr 12 2021.
January 11, 2021
February 10, 2021
March 10, 2021
April 12, 2021
May 10, 2021