# EDGAR Filing Document

**Accession Number:** 0000916053
**File Stem:** 0001133228-25-007710
**Filing Date:** 2025-7
**Character Count:** 36272
**Document Hash:** 5e65705577b0c5d9647505f0009084fa
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001133228-25-007710.hdr.sgml**: 20250729

**ACCESSION NUMBER**: 0001133228-25-007710

**CONFORMED SUBMISSION TYPE**: 497

**PUBLIC DOCUMENT COUNT**: 1

**FILED AS OF DATE**: 20250729

**DATE AS OF CHANGE**: 20250729

**EFFECTIVENESS DATE**: 20250729

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** MASSMUTUAL SELECT FUNDS
- **CENTRAL INDEX KEY:** 0000916053

**ORGANIZATION NAME:**
- **EIN:** 000000000
- **STATE OF INCORPORATION:** MA
- **FISCAL YEAR END:** 0930

**FILING VALUES:**
- **FORM TYPE:** 497
- **SEC ACT:** 1933 Act
- **SEC FILE NUMBER:** 033-73824
- **FILM NUMBER:** 251161509

**BUSINESS ADDRESS:**
- **STREET 1:** 1295 STATE STREET
- **CITY:** SPRINGFIELD
- **STATE:** MA
- **ZIP:** 01111
- **BUSINESS PHONE:** 413-744-1000

**MAIL ADDRESS:**
- **STREET 1:** 1295 STATE STREET
- **CITY:** SPRINGFIELD
- **STATE:** MA
- **ZIP:** 01111

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** MASSMUTUAL INSTITUTIONAL FUNDS
- **DATE OF NAME CHANGE:** 19931213

## Series and Classes Contracts Data

### MassMutual Blue Chip Growth Fund (Series ID: S000003658)

---

|  |  |  |
|:---|:---|:---|
| Class Name           | Ticker Symbol | Class ID   |
| Class A              | MBCGX         | C000010176 |
| Administrative Class | MBCLX         | C000010177 |
| Class R3             | MBCNX         | C000010178 |
| Class R5             | MBCSX         | C000010179 |
| Service Class        | MBCYX         | C000010180 |
| Class I              | MBCZX         | C000140351 |
| Class R4             | MBGFX         | C000140352 |
| Class Y              | MMZMX         | C000240788 |

---

### MM S&P 500 Index Fund (Series ID: S000003661)

---

|  |  |  |
|:---|:---|:---|
| Class Name           | Ticker Symbol | Class ID   |
| Class R4             | MIEAX         | C000010191 |
| Class R3             | MMINX         | C000010193 |
| Service Class        | MMIEX         | C000010194 |
| Administrative Class | MIEYX         | C000010195 |
| Class R5             | MIEZX         | C000010196 |
| Class I              | MMIZX         | C000108421 |
| Class A              | MMFFX         | C000140354 |

---

### MassMutual Mid Cap Growth Fund (Series ID: S000003665)

---

|  |  |  |
|:---|:---|:---|
| Class Name           | Ticker Symbol | Class ID   |
| Class A              | MEFAX         | C000010212 |
| Administrative Class | MMELX         | C000010213 |
| Class R3             | MEFNX         | C000010214 |
| Class R5             | MGRFX         | C000010215 |
| Service Class        | MEFYX         | C000010216 |
| Class I              | MEFZX         | C000093669 |
| Class R4             | MEFFX         | C000140357 |
| Class Y              | MMNGX         | C000240790 |

---

### MassMutual Overseas Fund (Series ID: S000003667)

---

|  |  |  |
|:---|:---|:---|
| Class Name           | Ticker Symbol | Class ID   |
| Class A              | MOSAX         | C000010222 |
| Administrative Class | MOSLX         | C000010223 |
| Class R3             | MOSNX         | C000010224 |
| Class R5             | MOSSX         | C000010225 |
| Service Class        | MOSYX         | C000010226 |
| Class I              | MOSZX         | C000093670 |
| Class R4             | MOSFX         | C000140360 |
| Class Y              | MMOJX         | C000240792 |

---

### MassMutual Small Cap Growth Equity Fund (Series ID: S000003668)

---

|  |  |  |
|:---|:---|:---|
| Class Name           | Ticker Symbol | Class ID   |
| Class A              | MMGEX         | C000010227 |
| Administrative Class | MSGLX         | C000010228 |
| Class R3             | MSGNX         | C000010229 |
| Class R5             | MSGSX         | C000010230 |
| Service Class        | MSCYX         | C000010231 |
| Class I              | MSGZX         | C000093671 |
| Class R4             | MSERX         | C000140361 |
| Class Y              | MMNJX         | C000240793 |

---

### MassMutual Small Company Value Fund (Series ID: S000003671)

---

|  |  |  |
|:---|:---|:---|
| Class Name           | Ticker Symbol | Class ID   |
| Class A              | MMYAX         | C000010242 |
| Administrative Class | MMYLX         | C000010243 |
| Class R3             | MSVNX         | C000010244 |
| Class R5             | MSVSX         | C000010245 |
| Service Class        | MMVYX         | C000010246 |
| Class I              | MSVZX         | C000093672 |
| Class R4             | MMVFX         | C000140368 |
| Class Y              | MMNLX         | C000240794 |

---

### MassMutual Diversified Value Fund (Series ID: S000003679)

---

|  |  |  |
|:---|:---|:---|
| Class Name           | Ticker Symbol | Class ID   |
| Class A              | MDDAX         | C000010282 |
| Administrative Class | MDDLX         | C000010283 |
| Class R3             | MDVNX         | C000010284 |
| Class R5             | MDVSX         | C000010285 |
| Service Class        | MDVYX         | C000010286 |
| Class I              | MDDIX         | C000140383 |
| Class R4             | MDDRX         | C000140384 |
| Class Y              | MMNBX         | C000240796 |

---

### MassMutual Equity Opportunities Fund (Series ID: S000003681)

---

|  |  |  |
|:---|:---|:---|
| Class Name           | Ticker Symbol | Class ID   |
| Class A              | MFVAX         | C000010292 |
| Administrative Class | MMFVX         | C000010293 |
| Class R3             | MFVNX         | C000010294 |
| Class R5             | MFVSX         | C000010295 |
| Service Class        | MMFYX         | C000010296 |
| Class I              | MFVZX         | C000093673 |
| Class R4             | MFVFX         | C000140385 |
| Class Y              | MMZOX         | C000240797 |

---

### MassMutual Total Return Bond Fund (Series ID: S000029393)

---

|  |  |  |
|:---|:---|:---|
| Class Name           | Ticker Symbol | Class ID   |
| Class R5             | MSPSX         | C000090284 |
| Service Class        | MSPHX         | C000090285 |
| Administrative Class | MSPLX         | C000090286 |
| Class R4             | MSPGX         | C000090287 |
| Class R3             | MSPNX         | C000090288 |
| Class I              | MSPZX         | C000090289 |
| Class A              | MPTRX         | C000140415 |
| Class Y              | MMNNX         | C000240800 |

---

### MassMutual 20/80 Allocation Fund (Series ID: S000032893)

---

|  |  |  |
|:---|:---|:---|
| Class Name           | Ticker Symbol | Class ID   |
| Class R5             | MRCSX         | C000101523 |
| Service Class        | MRCYX         | C000101524 |
| Administrative Class | MRCLX         | C000101525 |
| Class A              | MCTAX         | C000101526 |
| Class I              | MRCUX         | C000140416 |
| Class R4             | MRCZX         | C000140417 |
| Class R3             | MRCVX         | C000140418 |
| Class Y              | MMNOX         | C000240801 |

---

### MassMutual 40/60 Allocation Fund (Series ID: S000032894)

---

|  |  |  |
|:---|:---|:---|
| Class Name           | Ticker Symbol | Class ID   |
| Class R5             | MROSX         | C000101527 |
| Service Class        | MRMYX         | C000101528 |
| Administrative Class | MRMLX         | C000101529 |
| Class A              | MRMAX         | C000101530 |
| Class I              | MRMUX         | C000140419 |
| Class R4             | MRMZX         | C000140420 |
| Class R3             | MRMTX         | C000140421 |
| Class Y              | MMNPX         | C000240802 |

---

### MassMutual 60/40 Allocation Fund (Series ID: S000032895)

---

|  |  |  |
|:---|:---|:---|
| Class Name           | Ticker Symbol | Class ID   |
| Service Class        | MROYX         | C000101531 |
| Administrative Class | MRSLX         | C000101532 |
| Class A              | MOGAX         | C000101533 |
| Class R5             | MRSSX         | C000101534 |
| Class I              | MROUX         | C000140422 |
| Class R4             | MROZX         | C000140423 |
| Class R3             | MROTX         | C000140424 |
| Class Y              | MMNQX         | C000240803 |

---

### MassMutual 80/20 Allocation Fund (Series ID: S000032896)

---

|  |  |  |
|:---|:---|:---|
| Class Name           | Ticker Symbol | Class ID   |
| Class R5             | MRRSX         | C000101535 |
| Service Class        | MRGYX         | C000101536 |
| Administrative Class | MRGLX         | C000101537 |
| Class A              | MRRAX         | C000101538 |
| Class I              | MRGUX         | C000140425 |
| Class R4             | MRGZX         | C000140426 |
| Class R3             | MRGVX         | C000140427 |
| Class Y              | MMNSX         | C000240804 |

---

### MassMutual Select T. Rowe Price Retirement Balanced Fund (Series ID: S000061101)

---

|  |  |  |
|:---|:---|:---|
| Class Name | Ticker Symbol | Class ID   |
| Class I    | MMBVX         | C000198028 |
| Class M5   | MMBWX         | C000198029 |
| Class M4   | MMBYX         | C000198030 |
| Class M3   | MMBZX         | C000198031 |

---

### MassMutual Select T. Rowe Price Retirement 2045 Fund (Series ID: S000061102)

---

|  |  |  |
|:---|:---|:---|
| Class Name | Ticker Symbol | Class ID   |
| Class I    | MMFTX         | C000198032 |
| Class M5   | MMFUX         | C000198033 |
| Class M4   | MMFWX         | C000198034 |
| Class M3   | MMFZX         | C000198035 |

---

### MassMutual Select T. Rowe Price Retirement 2050 Fund (Series ID: S000061103)

---

|  |  |  |
|:---|:---|:---|
| Class Name | Ticker Symbol | Class ID   |
| Class I    | MMDDX         | C000198036 |
| Class M5   | MMDFX         | C000198037 |
| Class M4   | MMDGX         | C000198038 |
| Class M3   | MMDHX         | C000198039 |

---

### MassMutual Select T. Rowe Price Retirement 2055 Fund (Series ID: S000061104)

---

|  |  |  |
|:---|:---|:---|
| Class Name | Ticker Symbol | Class ID   |
| Class I    | MMDJX         | C000198040 |
| Class M5   | MMDKX         | C000198041 |
| Class M4   | MMDMX         | C000198042 |
| Class M3   | MMDOX         | C000198043 |

---

### MassMutual Select T. Rowe Price Retirement 2060 Fund (Series ID: S000061105)

---

|  |  |  |
|:---|:---|:---|
| Class Name | Ticker Symbol | Class ID   |
| Class I    | MMSKX         | C000198044 |
| Class M5   | MMSOX         | C000198045 |
| Class M4   | MMSGX         | C000198046 |
| Class M3   | MMSVX         | C000198047 |

---

### MassMutual Select T. Rowe Price Bond Asset Fund (Series ID: S000061106)

---

|  |  |  |
|:---|:---|:---|
| Class Name | Ticker Symbol | Class ID   |
| Class I    | MMBEX         | C000198048 |

---

### MassMutual Select T. Rowe Price Large Cap Blend Fund (Series ID: S000061108)

---

|  |  |  |
|:---|:---|:---|
| Class Name | Ticker Symbol | Class ID   |
| Class I    | MMLRX         | C000198050 |

---

### MassMutual Select T. Rowe Price Real Assets Fund (Series ID: S000061110)

---

|  |  |  |
|:---|:---|:---|
| Class Name | Ticker Symbol | Class ID   |
| Class I    | MMRFX         | C000198052 |

---

### MassMutual Select T. Rowe Price Small and Mid Cap Blend Fund (Series ID: S000061111)

---

|  |  |  |
|:---|:---|:---|
| Class Name | Ticker Symbol | Class ID   |
| Class I    | MMBUX         | C000198053 |

---

### MassMutual Select T. Rowe Price Retirement 2005 Fund (Series ID: S000061112)

---

|  |  |  |
|:---|:---|:---|
| Class Name | Ticker Symbol | Class ID   |
| Class I    | MMFBX         | C000198054 |
| Class M5   | MMFDX         | C000198055 |
| Class M4   | MMFEX         | C000198056 |
| Class M3   | MMFGX         | C000198057 |

---

### MassMutual Select T. Rowe Price International Equity Fund (Series ID: S000061114)

---

|  |  |  |
|:---|:---|:---|
| Class Name | Ticker Symbol | Class ID   |
| Class I    | MMIUX         | C000198059 |

---

### MassMutual Select T. Rowe Price Retirement 2010 Fund (Series ID: S000061115)

---

|  |  |  |
|:---|:---|:---|
| Class Name | Ticker Symbol | Class ID   |
| Class M5   | MMXCX         | C000198060 |
| Class M4   | MMXDX         | C000198061 |
| Class M3   | MMXEX         | C000198062 |
| Class I    | MMXBX         | C000198063 |

---

### MassMutual Select T. Rowe Price Retirement 2015 Fund (Series ID: S000061116)

---

|  |  |  |
|:---|:---|:---|
| Class Name | Ticker Symbol | Class ID   |
| Class I    | MMFHX         | C000198064 |
| Class M5   | MMFJX         | C000198065 |
| Class M4   | MMFKX         | C000198066 |
| Class M3   | MMFLX         | C000198067 |

---

### MassMutual Select T. Rowe Price Retirement 2020 Fund (Series ID: S000061117)

---

|  |  |  |
|:---|:---|:---|
| Class Name | Ticker Symbol | Class ID   |
| Class I    | MMTWX         | C000198068 |
| Class M5   | MMTTX         | C000198069 |
| Class M4   | MMTUX         | C000198070 |
| Class M3   | MMTVX         | C000198071 |

---

### MassMutual Select T. Rowe Price Retirement 2025 Fund (Series ID: S000061118)

---

|  |  |  |
|:---|:---|:---|
| Class Name | Ticker Symbol | Class ID   |
| Class I    | MMTFX         | C000198072 |
| Class M5   | MMTGX         | C000198073 |
| Class M4   | MMTHX         | C000198074 |
| Class M3   | MMTIX         | C000198075 |

---

### MassMutual Select T. Rowe Price Retirement 2030 Fund (Series ID: S000061119)

---

|  |  |  |
|:---|:---|:---|
| Class Name | Ticker Symbol | Class ID   |
| Class I    | MMTRX         | C000198076 |
| Class M5   | MMTOX         | C000198077 |
| Class M4   | MMTPX         | C000198078 |
| Class M3   | MMTQX         | C000198079 |

---

### MassMutual Select T. Rowe Price Retirement 2035 Fund (Series ID: S000061120)

---

|  |  |  |
|:---|:---|:---|
| Class Name | Ticker Symbol | Class ID   |
| Class I    | MMTJX         | C000198080 |
| Class M5   | MMTKX         | C000198081 |
| Class M4   | MMTLX         | C000198082 |
| Class M3   | MMTMX         | C000198083 |

---

### MassMutual Select T. Rowe Price Retirement 2040 Fund (Series ID: S000061121)

---

|  |  |  |
|:---|:---|:---|
| Class Name | Ticker Symbol | Class ID   |
| Class I    | MMFOX         | C000198084 |
| Class M5   | MMFPX         | C000198085 |
| Class M4   | MMFQX         | C000198086 |
| Class M3   | MMFRX         | C000198087 |

---

### MassMutual Select T. Rowe Price Retirement 2065 Fund (Series ID: S000079615)

---

|  |  |  |
|:---|:---|:---|
| Class Name | Ticker Symbol | Class ID   |
| Class M5   | MMZLX         | C000240783 |
| Class M4   | MMZKX         | C000240784 |
| Class M3   | MMZJX         | C000240785 |
| Class I    | MMZIX         | C000240786 |

---

## Series and Classes Contracts Data

### MassMutual Blue Chip Growth Fund (Series ID: S000003658)

| Class ID   | Class Name           | Ticker Symbol   |
|:---|:---|:---|
| C000010176 | Class A              | MBCGX           |
| C000010177 | Administrative Class | MBCLX           |
| C000010178 | Class R3             | MBCNX           |
| C000010179 | Class R5             | MBCSX           |
| C000010180 | Service Class        | MBCYX           |
| C000140351 | Class I              | MBCZX           |
| C000140352 | Class R4             | MBGFX           |
| C000240788 | Class Y              | MMZMX           |

### MM S&P 500 Index Fund (Series ID: S000003661)

| Class ID   | Class Name           | Ticker Symbol   |
|:---|:---|:---|
| C000010191 | Class R4             | MIEAX           |
| C000010193 | Class R3             | MMINX           |
| C000010194 | Service Class        | MMIEX           |
| C000010195 | Administrative Class | MIEYX           |
| C000010196 | Class R5             | MIEZX           |
| C000108421 | Class I              | MMIZX           |
| C000140354 | Class A              | MMFFX           |

### MassMutual Mid Cap Growth Fund (Series ID: S000003665)

| Class ID   | Class Name           | Ticker Symbol   |
|:---|:---|:---|
| C000010212 | Class A              | MEFAX           |
| C000010213 | Administrative Class | MMELX           |
| C000010214 | Class R3             | MEFNX           |
| C000010215 | Class R5             | MGRFX           |
| C000010216 | Service Class        | MEFYX           |
| C000093669 | Class I              | MEFZX           |
| C000140357 | Class R4             | MEFFX           |
| C000240790 | Class Y              | MMNGX           |

### MassMutual Overseas Fund (Series ID: S000003667)

| Class ID   | Class Name           | Ticker Symbol   |
|:---|:---|:---|
| C000010222 | Class A              | MOSAX           |
| C000010223 | Administrative Class | MOSLX           |
| C000010224 | Class R3             | MOSNX           |
| C000010225 | Class R5             | MOSSX           |
| C000010226 | Service Class        | MOSYX           |
| C000093670 | Class I              | MOSZX           |
| C000140360 | Class R4             | MOSFX           |
| C000240792 | Class Y              | MMOJX           |

### MassMutual Small Cap Growth Equity Fund (Series ID: S000003668)

| Class ID   | Class Name           | Ticker Symbol   |
|:---|:---|:---|
| C000010227 | Class A              | MMGEX           |
| C000010228 | Administrative Class | MSGLX           |
| C000010229 | Class R3             | MSGNX           |
| C000010230 | Class R5             | MSGSX           |
| C000010231 | Service Class        | MSCYX           |
| C000093671 | Class I              | MSGZX           |
| C000140361 | Class R4             | MSERX           |
| C000240793 | Class Y              | MMNJX           |

### MassMutual Small Company Value Fund (Series ID: S000003671)

| Class ID   | Class Name           | Ticker Symbol   |
|:---|:---|:---|
| C000010242 | Class A              | MMYAX           |
| C000010243 | Administrative Class | MMYLX           |
| C000010244 | Class R3             | MSVNX           |
| C000010245 | Class R5             | MSVSX           |
| C000010246 | Service Class        | MMVYX           |
| C000093672 | Class I              | MSVZX           |
| C000140368 | Class R4             | MMVFX           |
| C000240794 | Class Y              | MMNLX           |

### MassMutual Diversified Value Fund (Series ID: S000003679)

| Class ID   | Class Name           | Ticker Symbol   |
|:---|:---|:---|
| C000010282 | Class A              | MDDAX           |
| C000010283 | Administrative Class | MDDLX           |
| C000010284 | Class R3             | MDVNX           |
| C000010285 | Class R5             | MDVSX           |
| C000010286 | Service Class        | MDVYX           |
| C000140383 | Class I              | MDDIX           |
| C000140384 | Class R4             | MDDRX           |
| C000240796 | Class Y              | MMNBX           |

### MassMutual Equity Opportunities Fund (Series ID: S000003681)

| Class ID   | Class Name           | Ticker Symbol   |
|:---|:---|:---|
| C000010292 | Class A              | MFVAX           |
| C000010293 | Administrative Class | MMFVX           |
| C000010294 | Class R3             | MFVNX           |
| C000010295 | Class R5             | MFVSX           |
| C000010296 | Service Class        | MMFYX           |
| C000093673 | Class I              | MFVZX           |
| C000140385 | Class R4             | MFVFX           |
| C000240797 | Class Y              | MMZOX           |

### MassMutual Total Return Bond Fund (Series ID: S000029393)

| Class ID   | Class Name           | Ticker Symbol   |
|:---|:---|:---|
| C000090284 | Class R5             | MSPSX           |
| C000090285 | Service Class        | MSPHX           |
| C000090286 | Administrative Class | MSPLX           |
| C000090287 | Class R4             | MSPGX           |
| C000090288 | Class R3             | MSPNX           |
| C000090289 | Class I              | MSPZX           |
| C000140415 | Class A              | MPTRX           |
| C000240800 | Class Y              | MMNNX           |

### MassMutual 20/80 Allocation Fund (Series ID: S000032893)

| Class ID   | Class Name           | Ticker Symbol   |
|:---|:---|:---|
| C000101523 | Class R5             | MRCSX           |
| C000101524 | Service Class        | MRCYX           |
| C000101525 | Administrative Class | MRCLX           |
| C000101526 | Class A              | MCTAX           |
| C000140416 | Class I              | MRCUX           |
| C000140417 | Class R4             | MRCZX           |
| C000140418 | Class R3             | MRCVX           |
| C000240801 | Class Y              | MMNOX           |

### MassMutual 40/60 Allocation Fund (Series ID: S000032894)

| Class ID   | Class Name           | Ticker Symbol   |
|:---|:---|:---|
| C000101527 | Class R5             | MROSX           |
| C000101528 | Service Class        | MRMYX           |
| C000101529 | Administrative Class | MRMLX           |
| C000101530 | Class A              | MRMAX           |
| C000140419 | Class I              | MRMUX           |
| C000140420 | Class R4             | MRMZX           |
| C000140421 | Class R3             | MRMTX           |
| C000240802 | Class Y              | MMNPX           |

### MassMutual 60/40 Allocation Fund (Series ID: S000032895)

| Class ID   | Class Name           | Ticker Symbol   |
|:---|:---|:---|
| C000101531 | Service Class        | MROYX           |
| C000101532 | Administrative Class | MRSLX           |
| C000101533 | Class A              | MOGAX           |
| C000101534 | Class R5             | MRSSX           |
| C000140422 | Class I              | MROUX           |
| C000140423 | Class R4             | MROZX           |
| C000140424 | Class R3             | MROTX           |
| C000240803 | Class Y              | MMNQX           |

### MassMutual 80/20 Allocation Fund (Series ID: S000032896)

| Class ID   | Class Name           | Ticker Symbol   |
|:---|:---|:---|
| C000101535 | Class R5             | MRRSX           |
| C000101536 | Service Class        | MRGYX           |
| C000101537 | Administrative Class | MRGLX           |
| C000101538 | Class A              | MRRAX           |
| C000140425 | Class I              | MRGUX           |
| C000140426 | Class R4             | MRGZX           |
| C000140427 | Class R3             | MRGVX           |
| C000240804 | Class Y              | MMNSX           |

### MassMutual Select T. Rowe Price Retirement Balanced Fund (Series ID: S000061101)

| Class ID   | Class Name   | Ticker Symbol   |
|:---|:---|:---|
| C000198028 | Class I      | MMBVX           |
| C000198029 | Class M5     | MMBWX           |
| C000198030 | Class M4     | MMBYX           |
| C000198031 | Class M3     | MMBZX           |

### MassMutual Select T. Rowe Price Retirement 2045 Fund (Series ID: S000061102)

| Class ID   | Class Name   | Ticker Symbol   |
|:---|:---|:---|
| C000198032 | Class I      | MMFTX           |
| C000198033 | Class M5     | MMFUX           |
| C000198034 | Class M4     | MMFWX           |
| C000198035 | Class M3     | MMFZX           |

### MassMutual Select T. Rowe Price Retirement 2050 Fund (Series ID: S000061103)

| Class ID   | Class Name   | Ticker Symbol   |
|:---|:---|:---|
| C000198036 | Class I      | MMDDX           |
| C000198037 | Class M5     | MMDFX           |
| C000198038 | Class M4     | MMDGX           |
| C000198039 | Class M3     | MMDHX           |

### MassMutual Select T. Rowe Price Retirement 2055 Fund (Series ID: S000061104)

| Class ID   | Class Name   | Ticker Symbol   |
|:---|:---|:---|
| C000198040 | Class I      | MMDJX           |
| C000198041 | Class M5     | MMDKX           |
| C000198042 | Class M4     | MMDMX           |
| C000198043 | Class M3     | MMDOX           |

### MassMutual Select T. Rowe Price Retirement 2060 Fund (Series ID: S000061105)

| Class ID   | Class Name   | Ticker Symbol   |
|:---|:---|:---|
| C000198044 | Class I      | MMSKX           |
| C000198045 | Class M5     | MMSOX           |
| C000198046 | Class M4     | MMSGX           |
| C000198047 | Class M3     | MMSVX           |

### MassMutual Select T. Rowe Price Bond Asset Fund (Series ID: S000061106)

| Class ID   | Class Name   | Ticker Symbol   |
|:---|:---|:---|
| C000198048 | Class I      | MMBEX           |

### MassMutual Select T. Rowe Price Large Cap Blend Fund (Series ID: S000061108)

| Class ID   | Class Name   | Ticker Symbol   |
|:---|:---|:---|
| C000198050 | Class I      | MMLRX           |

### MassMutual Select T. Rowe Price Real Assets Fund (Series ID: S000061110)

| Class ID   | Class Name   | Ticker Symbol   |
|:---|:---|:---|
| C000198052 | Class I      | MMRFX           |

### MassMutual Select T. Rowe Price Small and Mid Cap Blend Fund (Series ID: S000061111)

| Class ID   | Class Name   | Ticker Symbol   |
|:---|:---|:---|
| C000198053 | Class I      | MMBUX           |

### MassMutual Select T. Rowe Price Retirement 2005 Fund (Series ID: S000061112)

| Class ID   | Class Name   | Ticker Symbol   |
|:---|:---|:---|
| C000198054 | Class I      | MMFBX           |
| C000198055 | Class M5     | MMFDX           |
| C000198056 | Class M4     | MMFEX           |
| C000198057 | Class M3     | MMFGX           |

### MassMutual Select T. Rowe Price International Equity Fund (Series ID: S000061114)

| Class ID   | Class Name   | Ticker Symbol   |
|:---|:---|:---|
| C000198059 | Class I      | MMIUX           |

### MassMutual Select T. Rowe Price Retirement 2010 Fund (Series ID: S000061115)

| Class ID   | Class Name   | Ticker Symbol   |
|:---|:---|:---|
| C000198060 | Class M5     | MMXCX           |
| C000198061 | Class M4     | MMXDX           |
| C000198062 | Class M3     | MMXEX           |
| C000198063 | Class I      | MMXBX           |

### MassMutual Select T. Rowe Price Retirement 2015 Fund (Series ID: S000061116)

| Class ID   | Class Name   | Ticker Symbol   |
|:---|:---|:---|
| C000198064 | Class I      | MMFHX           |
| C000198065 | Class M5     | MMFJX           |
| C000198066 | Class M4     | MMFKX           |
| C000198067 | Class M3     | MMFLX           |

### MassMutual Select T. Rowe Price Retirement 2020 Fund (Series ID: S000061117)

| Class ID   | Class Name   | Ticker Symbol   |
|:---|:---|:---|
| C000198068 | Class I      | MMTWX           |
| C000198069 | Class M5     | MMTTX           |
| C000198070 | Class M4     | MMTUX           |
| C000198071 | Class M3     | MMTVX           |

### MassMutual Select T. Rowe Price Retirement 2025 Fund (Series ID: S000061118)

| Class ID   | Class Name   | Ticker Symbol   |
|:---|:---|:---|
| C000198072 | Class I      | MMTFX           |
| C000198073 | Class M5     | MMTGX           |
| C000198074 | Class M4     | MMTHX           |
| C000198075 | Class M3     | MMTIX           |

### MassMutual Select T. Rowe Price Retirement 2030 Fund (Series ID: S000061119)

| Class ID   | Class Name   | Ticker Symbol   |
|:---|:---|:---|
| C000198076 | Class I      | MMTRX           |
| C000198077 | Class M5     | MMTOX           |
| C000198078 | Class M4     | MMTPX           |
| C000198079 | Class M3     | MMTQX           |

### MassMutual Select T. Rowe Price Retirement 2035 Fund (Series ID: S000061120)

| Class ID   | Class Name   | Ticker Symbol   |
|:---|:---|:---|
| C000198080 | Class I      | MMTJX           |
| C000198081 | Class M5     | MMTKX           |
| C000198082 | Class M4     | MMTLX           |
| C000198083 | Class M3     | MMTMX           |

### MassMutual Select T. Rowe Price Retirement 2040 Fund (Series ID: S000061121)

| Class ID   | Class Name   | Ticker Symbol   |
|:---|:---|:---|
| C000198084 | Class I      | MMFOX           |
| C000198085 | Class M5     | MMFPX           |
| C000198086 | Class M4     | MMFQX           |
| C000198087 | Class M3     | MMFRX           |

### MassMutual Select T. Rowe Price Retirement 2065 Fund (Series ID: S000079615)

| Class ID   | Class Name   | Ticker Symbol   |
|:---|:---|:---|
| C000240783 | Class M5     | MMZLX           |
| C000240784 | Class M4     | MMZKX           |
| C000240785 | Class M3     | MMZJX           |
| C000240786 | Class I      | MMZIX           |

#### MASSMUTUAL FUNDS<br>

#### MassMutual Total Return Bond Fund<br>

#### MassMutual Diversified Value Fund <br>

#### MM S&P 500<sup>®</sup> Index Fund <br>

#### MassMutual Equity Opportunities Fund <br>

#### MassMutual Blue Chip Growth Fund <br>

#### MassMutual Small Company Value Fund <br>

#### MassMutual Mid Cap Growth Fund <br>

#### MassMutual Small Cap Growth Equity Fund <br>

#### MassMutual Overseas Fund<br>

#### MassMutual Select T. Rowe Price International Equity Fund<br>

#### Supplement dated July 29, 2025 to the<br>

#### Statement of Additional Information dated February 1, 2025
This supplement provides new and additional information beyond that contained in the Statement of Additional Information ("SAI") and any previous supplements. It should be retained and read in conjunction with the SAI and any previous supplements.

*Effective immediately, the following information supplements the information beginning on page B-56 under the heading **Principal Officers** in the section titled **Management of the Trust**:* 

---

| | |
|:---|:---|
| **Brian Pelkola**<br>| Vice President of the Trust |
| 1295 State Street |  |
| Springfield, MA 01111-0001 |  |
| Year of birth: 1984 |  |
| Officer of the Trust since 2025 |  |
| Officer of 84 portfolios in fund complex |  |

---

Director of Product Management (since 2025), Senior Product Manager (2022-2025), MML Advisers; Director of Product Management (since 2025), Senior Product Manager (2022-2025), MassMutual; Senior Fund Administration Supervisor (2020-2022) Massachusetts Financial Services Company; Vice President (since 2025), MassMutual Select Funds (open-end investment company); Vice President (since 2025), MassMutual Premier Funds (open-end investment company); Vice President (since 2025), MassMutual Advantage Funds (open-end investment company); Vice President (since 2025), MML Series Investment Fund (open-end investment company); Vice President (since 2025), MML Series Investment Fund II (open-end investment company).

#### PLEASE RETAIN THIS SUPPLEMENT FOR FUTURE REFERENCE

#### SELMSAI-25-08

------

#### MASSMUTUAL FUNDS<br>

#### MassMutual 20/80 Allocation Fund<br>

#### MassMutual 40/60 Allocation Fund<br>

#### MassMutual 60/40 Allocation Fund<br>

#### MassMutual 80/20 Allocation Fund<br>

#### Supplement dated July 29, 2025 to the<br>

#### Statement of Additional Information dated February 1, 2025
This supplement provides new and additional information beyond that contained in the Statement of Additional Information ("SAI") and any previous supplements. It should be retained and read in conjunction with the SAI and any previous supplements.

*Effective immediately, the following information supplements the information beginning on page B-54 under the heading **Principal Officers** in the section titled **Management of the Trust**:* 

---

| | |
|:---|:---|
| **Brian Pelkola**<br>| Vice President of the Trust |
| 1295 State Street |  |
| Springfield, MA 01111-0001 |  |
| Year of birth: 1984 |  |
| Officer of the Trust since 2025 |  |
| Officer of 84 portfolios in fund complex |  |

---

Director of Product Management (since 2025), Senior Product Manager (2022-2025), MML Advisers; Director of Product Management (since 2025), Senior Product Manager (2022-2025), MassMutual; Senior Fund Administration Supervisor (2020-2022) Massachusetts Financial Services Company; Vice President (since 2025), MassMutual Select Funds (open-end investment company); Vice President (since 2025), MassMutual Premier Funds (open-end investment company); Vice President (since 2025), MassMutual Advantage Funds (open-end investment company); Vice President (since 2025), MML Series Investment Fund (open-end investment company); Vice President (since 2025), MML Series Investment Fund II (open-end investment company).

#### PLEASE RETAIN THIS SUPPLEMENT FOR FUTURE REFERENCE

#### TGTALLSAI-25-02

------

#### MASSMUTUAL FUNDS<br>

#### MassMutual Select T. Rowe Price Retirement Balanced Fund<br>

#### MassMutual Select T. Rowe Price Retirement 2005 Fund<br>

#### MassMutual Select T. Rowe Price Retirement 2010 Fund<br>

#### MassMutual Select T. Rowe Price Retirement 2015 Fund<br>

#### MassMutual Select T. Rowe Price Retirement 2020 Fund<br>

#### MassMutual Select T. Rowe Price Retirement 2025 Fund<br>

#### MassMutual Select T. Rowe Price Retirement 2030 Fund<br>

#### MassMutual Select T. Rowe Price Retirement 2035 Fund<br>

#### MassMutual Select T. Rowe Price Retirement 2040 Fund<br>

#### MassMutual Select T. Rowe Price Retirement 2045 Fund<br>

#### MassMutual Select T. Rowe Price Retirement 2050 Fund<br>

#### MassMutual Select T. Rowe Price Retirement 2055 Fund<br>

#### MassMutual Select T. Rowe Price Retirement 2060 Fund<br>

#### MassMutual Select T. Rowe Price Retirement 2065 Fund<br>

#### Supplement dated July 29, 2025 to the<br>

#### Statement of Additional Information dated February 1, 2025
This supplement provides new and additional information beyond that contained in the Statement of Additional Information ("SAI") and any previous supplements. It should be retained and read in conjunction with the SAI and any previous supplements.

*Effective immediately, the following information supplements the information beginning on page B-53 under the heading **Principal Officers** in the section titled **Management of the Trust**:* 

---

| | |
|:---|:---|
| **Brian Pelkola**<br>| Vice President of the Trust |
| 1295 State Street |  |
| Springfield, MA 01111-0001 |  |
| Year of birth: 1984 |  |
| Officer of the Trust since 2025 |  |
| Officer of 84 portfolios in fund complex |  |

---

Director of Product Management (since 2025), Senior Product Manager (2022-2025), MML Advisers; Director of Product Management (since 2025), Senior Product Manager (2022-2025), MassMutual; Senior Fund Administration Supervisor (2020-2022) Massachusetts Financial Services Company; Vice President (since 2025), MassMutual Select Funds (open-end investment company); Vice President (since 2025), MassMutual Premier Funds (open-end investment company); Vice President (since 2025), MassMutual Advantage Funds (open-end investment company); Vice President (since 2025), MML Series Investment Fund (open-end investment company); Vice President (since 2025), MML Series Investment Fund II (open-end investment company).

#### PLEASE RETAIN THIS SUPPLEMENT FOR FUTURE REFERENCE

#### TRTDSAI-25-02

------

#### MASSMUTUAL FUNDS<br>

#### MassMutual Select T. Rowe Price Bond Asset Fund<br>

#### MassMutual Select T. Rowe Price Large Cap Blend Fund<br>

#### MassMutual Select T. Rowe Price Real Assets Fund<br>

#### MassMutual Select T. Rowe Price Small and Mid Cap Blend Fund <br>

#### Supplement dated July 29, 2025 to the<br>

#### Statement of Additional Information dated February 1, 2025
This supplement provides new and additional information beyond that contained in the Statement of Additional Information ("SAI") and any previous supplements. It should be retained and read in conjunction with the SAI and any previous supplements.

*Effective immediately, the following information supplements the information beginning on page B-55 under the heading **Principal Officers** in the section titled **Management of the Trust**:* 

---

| | |
|:---|:---|
| **Brian Pelkola**<br>| Vice President of the Trust |
| 1295 State Street |  |
| Springfield, MA 01111-0001 |  |
| Year of birth: 1984 |  |
| Officer of the Trust since 2025 |  |
| Officer of 84 portfolios in fund complex |  |

---

Director of Product Management (since 2025), Senior Product Manager (2022-2025), MML Advisers; Director of Product Management (since 2025), Senior Product Manager (2022-2025), MassMutual; Senior Fund Administration Supervisor (2020-2022) Massachusetts Financial Services Company; Vice President (since 2025), MassMutual Select Funds (open-end investment company); Vice President (since 2025), MassMutual Premier Funds (open-end investment company); Vice President (since 2025), MassMutual Advantage Funds (open-end investment company); Vice President (since 2025), MML Series Investment Fund (open-end investment company); Vice President (since 2025), MML Series Investment Fund II (open-end investment company).

#### PLEASE RETAIN THIS SUPPLEMENT FOR FUTURE REFERENCE

#### UNDSAI-25-04

------