# EDGAR Filing Document

**Accession Number:** 0000916053
**File Stem:** 0001133228-26-003411
**Filing Date:** 2026-3
**Character Count:** 8802
**Document Hash:** 7b96a6fed70909057ba3b030e4950437
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001133228-26-003411.hdr.sgml**: 20260310

**ACCESSION NUMBER**: 0001133228-26-003411

**CONFORMED SUBMISSION TYPE**: 497

**PUBLIC DOCUMENT COUNT**: 1

**FILED AS OF DATE**: 20260310

**DATE AS OF CHANGE**: 20260310

**EFFECTIVENESS DATE**: 20260310

**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:** 26737851

**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 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 |

---

## 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 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 FUNDS<br>

#### MassMutual Diversified Value Fund<br>

#### MM S&P 500® Index Fund<br>

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

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

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

#### MassMutual Overseas Fund<br>

#### Supplement dated March 10, 2026 to the<br>

#### Statement of Additional Information dated February 1, 2026
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 March 1, 2026, Paul LaPiana resigned as an Interested Trustee of the Trust.* 

#### PLEASE RETAIN THIS SUPPLEMENT FOR FUTURE REFERENCE

#### SELSAI-26-02<br>