X0101 EFFECT 33 LIVE 2024-10-31 09:30:00

N-1A

0002018846 MFS Active Exchange Traded Funds Trust 333-278691 S000085666 MFS Active Core Plus Bond ETF C000251000 MFS Active Core Plus Bond ETF S000085667 MFS Active Growth ETF C000251001 MFS Active Growth ETF S000085668 MFS Active Intermediate Muni Bond ETF C000251002 MFS Active Intermediate Muni Bond ETF S000085669 MFS Active International ETF C000251003 MFS Active International ETF S000085670 MFS Active Value ETF C000251004 MFS Active Value ETF