X0101 EFFECT 33 LIVE 2007-10-19 16:30:00

N-14

0000357238 HANCOCK JOHN SERIES TRUST 333-146384 0000357238 HANCOCK JOHN SERIES TRUST S000000641 Mid Cap Equity Fund C000001836 Class A 0000357238 HANCOCK JOHN SERIES TRUST S000000642 Multi Cap Growth Fund C000001840 Class A 0000357238 HANCOCK JOHN SERIES TRUST S000000641 Mid Cap Equity Fund C000001837 Class B 0000357238 HANCOCK JOHN SERIES TRUST S000000642 Multi Cap Growth Fund C000001841 Class B 0000357238 HANCOCK JOHN SERIES TRUST S000000641 Mid Cap Equity Fund C000001838 Class C 0000357238 HANCOCK JOHN SERIES TRUST S000000642 Multi Cap Growth Fund C000001842 Class C