Series and Classes/Contracts Information:
| Existing | |||
| Status | Name | Ticker Symbol | |
| CIK 0001469192 | |||
| Series S000065655 | MainStay MacKay Strategic Municipal Allocation Fund | ||
| Class/Contract C000212401 | Class R6 | MTFHX | |
| Class/Contract C000212403 | Investor Class | MTFEX | |
| Class/Contract C000212404 | Class A | MTFDX | |
| Class/Contract C000212406 | Class I | MTFGX | |
| Class/Contract C000212407 | Class C | MTFFX | |
| Class/Contract C000240253 | Class C2 | MTFMX | |
| Class/Contract C000250195 | Class Z | MTFZX | |
| Status | Name | Ticker Symbol | |
| CIK 0001469192 | |||
| Series S000085225 | MainStay MacKay Arizona Muni Fund | ||
| Class/Contract C000250179 | Class A | AZTAX | |
| Class/Contract C000250180 | Class C | AZTCX | |
| Class/Contract C000250181 | Class I | AZTYX | |
| Class/Contract C000250182 | Class Z | AZTFX | |
| Status | Name | Ticker Symbol | |
| CIK 0001469192 | |||
| Series S000085226 | MainStay MacKay Colorado Muni Fund | ||
| Class/Contract C000250183 | Class I | COTYX | |
| Class/Contract C000250184 | Class Z | COTFX | |
| Class/Contract C000250185 | Class A | COTAX | |
| Class/Contract C000250186 | Class C | COTCX | |
| Status | Name | Ticker Symbol | |
| CIK 0001469192 | |||
| Series S000085227 | MainStay MacKay Oregon Muni Fund | ||
| Class/Contract C000250187 | Class C | ORTCX | |
| Class/Contract C000250188 | Class I | ORTYX | |
| Class/Contract C000250189 | Class Z | ORTFX | |
| Class/Contract C000250190 | Class A | ORTBX | |
| Status | Name | Ticker Symbol | |
| CIK 0001469192 | |||
| Series S000085228 | MainStay MacKay Utah Muni Fund | ||
| Class/Contract C000250191 | Class C | UTACX | |
| Class/Contract C000250192 | Class I | UTAYX | |
| Class/Contract C000250193 | Class Z | UTAHX | |
| Class/Contract C000250194 | Class A | UTAVX | |
IRS No.: 000000000 | State of Incorp.: DE | Fiscal Year End: 1031
Type: 497 | Act: 33 | File No.: 333-160918 | Film No.: 241130139