# EDGAR Filing Document

**Accession Number:** 0000067160
**File Stem:** 0001133228-25-007702
**Filing Date:** 2025-7
**Character Count:** 14942
**Document Hash:** d71d54db7407a11d235a9732d5f7307c
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001133228-25-007702.hdr.sgml**: 20250729

**ACCESSION NUMBER**: 0001133228-25-007702

**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:** MML SERIES INVESTMENT FUND
- **CENTRAL INDEX KEY:** 0000067160

**ORGANIZATION NAME:**
- **EIN:** 042476032
- **STATE OF INCORPORATION:** MA
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** 497
- **SEC ACT:** 1933 Act
- **SEC FILE NUMBER:** 002-39334
- **FILM NUMBER:** 251161232

**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:** MML EQUITY INVESTMENT CO INC
- **DATE OF NAME CHANGE:** 19850227

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** MML INVESTMENT CO INC
- **DATE OF NAME CHANGE:** 19811109

## Series and Classes Contracts Data

### MML Equity Index Fund (Series ID: S000003823)

---

|  |  |
|:---|:---|
| Class Name      | Class ID   |
| Class I         | C000010665 |
| Class II        | C000010672 |
| Class III       | C000010673 |
| Service Class I | C000067760 |

---

### MML Managed Volatility Fund (Series ID: S000003825)

---

|  |  |
|:---|:---|
| Class Name    | Class ID   |
| Initial Class | C000010667 |
| Service Class | C000067762 |

---

### MML Small Cap Growth Equity Fund (Series ID: S000003827)

---

|  |  |
|:---|:---|
| Class Name    | Class ID   |
| Initial Class | C000010669 |
| Service Class | C000067764 |

---

### MML Small/Mid Cap Value Fund (Series ID: S000011478)

---

|  |  |
|:---|:---|
| Class Name    | Class ID   |
| Initial Class | C000031708 |
| Service Class | C000067766 |

---

### MML Global Fund (Series ID: S000011480)

---

|  |  |
|:---|:---|
| Class Name      | Class ID   |
| Class I         | C000031710 |
| Class II        | C000034569 |
| Service Class I | C000067768 |

---

### MML Foreign Fund (Series ID: S000011481)

---

|  |  |
|:---|:---|
| Class Name    | Class ID   |
| Initial Class | C000031711 |
| Service Class | C000067769 |

---

### MML Equity Income Fund (Series ID: S000011482)

---

|  |  |
|:---|:---|
| Class Name    | Class ID   |
| Initial Class | C000031712 |
| Service Class | C000067770 |

---

### MML Income & Growth Fund (Series ID: S000011483)

---

|  |  |
|:---|:---|
| Class Name    | Class ID   |
| Initial Class | C000031713 |
| Service Class | C000067771 |

---

### MML Sustainable Equity Fund (Series ID: S000011484)

---

|  |  |
|:---|:---|
| Class Name    | Class ID   |
| Initial Class | C000031714 |
| Service Class | C000067772 |

---

### MML Blue Chip Growth Fund (Series ID: S000011485)

---

|  |  |
|:---|:---|
| Class Name    | Class ID   |
| Initial Class | C000031715 |
| Service Class | C000067773 |

---

### MML Large Cap Growth Fund (Series ID: S000011486)

---

|  |  |
|:---|:---|
| Class Name    | Class ID   |
| Initial Class | C000031716 |
| Service Class | C000067774 |

---

### MML Mid Cap Value Fund (Series ID: S000011488)

---

|  |  |
|:---|:---|
| Class Name    | Class ID   |
| Initial Class | C000031718 |
| Service Class | C000067776 |

---

### MML Mid Cap Growth Fund (Series ID: S000011489)

---

|  |  |
|:---|:---|
| Class Name    | Class ID   |
| Initial Class | C000031719 |
| Service Class | C000067777 |

---

### MML Conservative Allocation Fund (Series ID: S000018539)

---

|  |  |
|:---|:---|
| Class Name    | Class ID   |
| Initial Class | C000051435 |
| Service Class | C000067778 |

---

### MML Balanced Allocation Fund (Series ID: S000018540)

---

|  |  |
|:---|:---|
| Class Name    | Class ID   |
| Initial Class | C000051436 |
| Service Class | C000067779 |

---

### MML Moderate Allocation Fund (Series ID: S000018541)

---

|  |  |
|:---|:---|
| Class Name    | Class ID   |
| Initial Class | C000051437 |
| Service Class | C000067780 |

---

### MML Growth Allocation Fund (Series ID: S000018542)

---

|  |  |
|:---|:---|
| Class Name    | Class ID   |
| Initial Class | C000051438 |
| Service Class | C000067781 |

---

### MML Aggressive Allocation Fund (Series ID: S000018543)

---

|  |  |
|:---|:---|
| Class Name    | Class ID   |
| Initial Class | C000051439 |
| Service Class | C000067782 |

---

### MML American Funds Growth Fund (Series ID: S000023208)

---

|  |  |
|:---|:---|
| Class Name      | Class ID   |
| Service Class I | C000067574 |

---

### MML American Funds Core Allocation Fund (Series ID: S000023210)

---

|  |  |
|:---|:---|
| Class Name      | Class ID   |
| Service Class I | C000067576 |

---

### MML Small Company Value Fund (Series ID: S000025079)

---

|  |  |
|:---|:---|
| Class Name      | Class ID   |
| Class II        | C000074589 |
| Service Class I | C000074590 |

---

### MML Total Return Bond Fund (Series ID: S000029642)

---

|  |  |
|:---|:---|
| Class Name      | Class ID   |
| Class II        | C000091024 |
| Service Class I | C000091025 |

---

### MML Focused Equity Fund (Series ID: S000034945)

---

|  |  |
|:---|:---|
| Class Name      | Class ID   |
| Class II        | C000107473 |
| Service Class I | C000107474 |

---

### MML Fundamental Equity Fund (Series ID: S000034946)

---

|  |  |
|:---|:---|
| Class Name      | Class ID   |
| Class II        | C000107475 |
| Service Class I | C000107476 |

---

### MML International Equity Fund (Series ID: S000043749)

---

|  |  |
|:---|:---|
| Class Name      | Class ID   |
| Class II        | C000135666 |
| Service Class I | C000135667 |

---

## Series and Classes Contracts Data

### MML Equity Index Fund (Series ID: S000003823)

| Class ID   | Class Name      | Ticker Symbol   |
|:---|:---|:---|
| C000010665 | Class I         |  |
| C000010672 | Class II        |  |
| C000010673 | Class III       |  |
| C000067760 | Service Class I |  |

### MML Managed Volatility Fund (Series ID: S000003825)

| Class ID   | Class Name    | Ticker Symbol   |
|:---|:---|:---|
| C000010667 | Initial Class |  |
| C000067762 | Service Class |  |

### MML Small Cap Growth Equity Fund (Series ID: S000003827)

| Class ID   | Class Name    | Ticker Symbol   |
|:---|:---|:---|
| C000010669 | Initial Class |  |
| C000067764 | Service Class |  |

### MML Small/Mid Cap Value Fund (Series ID: S000011478)

| Class ID   | Class Name    | Ticker Symbol   |
|:---|:---|:---|
| C000031708 | Initial Class |  |
| C000067766 | Service Class |  |

### MML Global Fund (Series ID: S000011480)

| Class ID   | Class Name      | Ticker Symbol   |
|:---|:---|:---|
| C000031710 | Class I         |  |
| C000034569 | Class II        |  |
| C000067768 | Service Class I |  |

### MML Foreign Fund (Series ID: S000011481)

| Class ID   | Class Name    | Ticker Symbol   |
|:---|:---|:---|
| C000031711 | Initial Class |  |
| C000067769 | Service Class |  |

### MML Equity Income Fund (Series ID: S000011482)

| Class ID   | Class Name    | Ticker Symbol   |
|:---|:---|:---|
| C000031712 | Initial Class |  |
| C000067770 | Service Class |  |

### MML Income & Growth Fund (Series ID: S000011483)

| Class ID   | Class Name    | Ticker Symbol   |
|:---|:---|:---|
| C000031713 | Initial Class |  |
| C000067771 | Service Class |  |

### MML Sustainable Equity Fund (Series ID: S000011484)

| Class ID   | Class Name    | Ticker Symbol   |
|:---|:---|:---|
| C000031714 | Initial Class |  |
| C000067772 | Service Class |  |

### MML Blue Chip Growth Fund (Series ID: S000011485)

| Class ID   | Class Name    | Ticker Symbol   |
|:---|:---|:---|
| C000031715 | Initial Class |  |
| C000067773 | Service Class |  |

### MML Large Cap Growth Fund (Series ID: S000011486)

| Class ID   | Class Name    | Ticker Symbol   |
|:---|:---|:---|
| C000031716 | Initial Class |  |
| C000067774 | Service Class |  |

### MML Mid Cap Value Fund (Series ID: S000011488)

| Class ID   | Class Name    | Ticker Symbol   |
|:---|:---|:---|
| C000031718 | Initial Class |  |
| C000067776 | Service Class |  |

### MML Mid Cap Growth Fund (Series ID: S000011489)

| Class ID   | Class Name    | Ticker Symbol   |
|:---|:---|:---|
| C000031719 | Initial Class |  |
| C000067777 | Service Class |  |

### MML Conservative Allocation Fund (Series ID: S000018539)

| Class ID   | Class Name    | Ticker Symbol   |
|:---|:---|:---|
| C000051435 | Initial Class |  |
| C000067778 | Service Class |  |

### MML Balanced Allocation Fund (Series ID: S000018540)

| Class ID   | Class Name    | Ticker Symbol   |
|:---|:---|:---|
| C000051436 | Initial Class |  |
| C000067779 | Service Class |  |

### MML Moderate Allocation Fund (Series ID: S000018541)

| Class ID   | Class Name    | Ticker Symbol   |
|:---|:---|:---|
| C000051437 | Initial Class |  |
| C000067780 | Service Class |  |

### MML Growth Allocation Fund (Series ID: S000018542)

| Class ID   | Class Name    | Ticker Symbol   |
|:---|:---|:---|
| C000051438 | Initial Class |  |
| C000067781 | Service Class |  |

### MML Aggressive Allocation Fund (Series ID: S000018543)

| Class ID   | Class Name    | Ticker Symbol   |
|:---|:---|:---|
| C000051439 | Initial Class |  |
| C000067782 | Service Class |  |

### MML American Funds Growth Fund (Series ID: S000023208)

| Class ID   | Class Name      | Ticker Symbol   |
|:---|:---|:---|
| C000067574 | Service Class I |  |

### MML American Funds Core Allocation Fund (Series ID: S000023210)

| Class ID   | Class Name      | Ticker Symbol   |
|:---|:---|:---|
| C000067576 | Service Class I |  |

### MML Small Company Value Fund (Series ID: S000025079)

| Class ID   | Class Name      | Ticker Symbol   |
|:---|:---|:---|
| C000074589 | Class II        |  |
| C000074590 | Service Class I |  |

### MML Total Return Bond Fund (Series ID: S000029642)

| Class ID   | Class Name      | Ticker Symbol   |
|:---|:---|:---|
| C000091024 | Class II        |  |
| C000091025 | Service Class I |  |

### MML Focused Equity Fund (Series ID: S000034945)

| Class ID   | Class Name      | Ticker Symbol   |
|:---|:---|:---|
| C000107473 | Class II        |  |
| C000107474 | Service Class I |  |

### MML Fundamental Equity Fund (Series ID: S000034946)

| Class ID   | Class Name      | Ticker Symbol   |
|:---|:---|:---|
| C000107475 | Class II        |  |
| C000107476 | Service Class I |  |

### MML International Equity Fund (Series ID: S000043749)

| Class ID   | Class Name      | Ticker Symbol   |
|:---|:---|:---|
| C000135666 | Class II        |  |
| C000135667 | Service Class I |  |

#### MML SERIES INVESTMENT FUND<br>

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

#### MML Equity Income Fund<br>

#### MML Equity Index Fund<br>

#### MML Focused Equity Fund<br>

#### MML Foreign Fund<br>

#### MML Fundamental Equity Fund<br>

#### MML Global Fund<br>

#### MML Income & Growth Fund<br>

#### MML International Equity Fund<br>

#### MML Large Cap Growth Fund<br>

#### MML Managed Volatility Fund<br>

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

#### MML Mid Cap Value Fund<br>

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

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

#### MML Small/Mid Cap Value Fund<br>

#### MML Sustainable Equity Fund<br>

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

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

#### Statement of Additional Information dated April 25, 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-57 under the heading **Principal Officers** in the section titled **Management of the Trust**:* 

---

| | |
|:---|:---|
| **Brian Pelkola** | 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

#### MMLSAI-25-02

------

#### MML SERIES INVESTMENT FUND<br>

#### MML Conservative Allocation Fund<br>

#### MML Balanced Allocation Fund<br>

#### MML Moderate Allocation Fund<br>

#### MML Growth Allocation Fund<br>

#### MML Aggressive Allocation Fund<br>

#### MML American Funds Growth Fund<br>

#### MML American Funds Core Allocation Fund<br>

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

#### Statement of Additional Information dated April 25, 2025
This supplement provides new and additional information beyond that contained in the Statement of Additional Information ("SAI"). It should be retained and read in conjunction with the SAI.

*Effective immediately, the following information supplements the information beginning on page B-61 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

#### MMLALLSAI-25-01

------