A detailed breakdown of the ~150K USDC can be found here.
The original mandate from all 4 of these initiatives is now concluded. To touch on the Events Budget specifically since you mentioned it directly, its mandate was for 2025 only and as part of the Consolidation of Idle USDC proposal last July, Entropy highlighted that following the end of the year, the funds would remain in the ATMC as opposed to being returned to the DAO treasury.
While the ATMC funds are under custody of the Arbitrum Foundation, the DAO would need to conduct an offchain vote to pull funds out of the council’s management entirely and redirect them if it wishes to fund a new initiative with the ATMC budget.