X0101 EFFECT 33 LIVE 2023-06-22 16:00:00

N-14

0001469192 MAINSTAY FUNDS TRUST 333-271749 0001469192 MAINSTAY FUNDS TRUST S000081084 MainStay PineStone U.S. Equity Fund C000243752 Class I 0001691994 Fiera Capital Series Trust S000066496 FIERA CAPITAL U.S. EQUITY LONG-TERM QUALITY FUND C000214480 Institutional Class 0001469192 MAINSTAY FUNDS TRUST S000081084 MainStay PineStone U.S. Equity Fund C000243755 Class A 0001691994 Fiera Capital Series Trust S000066496 FIERA CAPITAL U.S. EQUITY LONG-TERM QUALITY FUND C000214481 Investor Class