# EDGAR Filing Document

**Accession Number:** 0000943863
**File Stem:** 0001133228-25-012425
**Filing Date:** 2025-11
**Character Count:** 6798
**Document Hash:** 08a3c1bae9b3dca6b3b3d89fc9ea076e
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001133228-25-012425.hdr.sgml**: 20251117

**ACCESSION NUMBER**: 0001133228-25-012425

**CONFORMED SUBMISSION TYPE**: 497VPU

**PUBLIC DOCUMENT COUNT**: 1

**FILED AS OF DATE**: 20251117

**DATE AS OF CHANGE**: 20251117

**EFFECTIVENESS DATE**: 20251117

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** C M LIFE VARIABLE LIFE SEPARATE ACCOUNT I
- **CENTRAL INDEX KEY:** 0000943863

**ORGANIZATION NAME:**
- **EIN:** 000000000
- **STATE OF INCORPORATION:** CT
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** 497VPU
- **SEC ACT:** 1933 Act
- **SEC FILE NUMBER:** 333-259818
- **FILM NUMBER:** 251492056

**BUSINESS ADDRESS:**
- **STREET 1:** 100 BRIGHT MEADOW BOULEVARD
- **CITY:** ENFIELD
- **STATE:** CT
- **ZIP:** 06082
- **BUSINESS PHONE:** (413)788-8411

**MAIL ADDRESS:**
- **STREET 1:** 1295 STATE STREET
- **CITY:** SPRINGFIELD
- **STATE:** MA
- **ZIP:** 01111-0001

## Series and Classes Contracts Data

### C M LIFE VARIABLE LIFE SEPARATE ACCOUNT I (Series ID: S000010877)

| Class ID   | Class Name                     | Ticker Symbol   |
|:---|:---|:---|
| C000232693 | C.M. Life Electrum Select (SM) |  |

**Supplement dated November 17, 2025**

**to the Prospectus and Updating Summary Prospectus each dated April 28, 2025, as supplemented, for:**

**MassMutual Electrum<sup>SM</sup>**

*Issued by Massachusetts Mutual Life Insurance Company*

 

**and to the Prospectus, Initial Summary Prospectus, and Updating Summary Prospectus dated April 28, 2025, as supplemented, for:**

**C.M. Life Electrum Select<sup>SM</sup>**

*Issued by C.M. Life Insurance Company*

 

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| |
|:---|
| **THIS SUPPLEMENT MUST BE READ IN CONJUNCTION WITH YOUR PROSPECTUS.** |
| **PLEASE RETAIN THIS SUPPLEMENT FOR FUTURE REFERENCE.** |

---

 

*This supplement amends certain information in the above-referenced prospectuses:*

**Fund Additions**

Beginning November 17, 2025, the following funds are added to **Appendix A** as investment options under your policy:

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| | | | | | |
|:---|:---|:---|:---|:---|:---|
| **Fund Type** | **Fund and Adviser/Sub-Adviser** | **Current**<br> **Expenses**<br> **(expenses/**<br> **average assets)** | **Average Annual Total Returns**<br> **(as of 12/31/2024)** | **Average Annual Total Returns**<br> **(as of 12/31/2024)** | **Average Annual Total Returns**<br> **(as of 12/31/2024)** |
| **Fund Type** | **Fund and Adviser/Sub-Adviser** | **Current**<br> **Expenses**<br> **(expenses/**<br> **average assets)** | **1 Year** | **5 Year** | **10 Year** |
| Small/Mid-Cap Growth | MML Invesco Discovery Mid Cap Fund (Class II)\*\*<br> ***Adviser:*** MML Investment Advisers, LLC<br> ***Sub-Adviser:*** Invesco Advisers, Inc. | 0.83% | -- | -- | -- |
| International/Global | MML Global Fund (Class II)<br> ***Adviser:*** MML Investment Advisers, LLC<br> ***Sub-Adviser:*** Invesco Advisers, Inc. | 0.81%\* | 5.59% | 5.87% | 7.55% |

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*\*This Fund is subject to an expense reimbursement or fee waiver arrangement. As a result, this Fund's annual expenses reflect temporary expense reductions. See the Fund prospectus for additional information.*

 

*\*\*The expenses are based on estimated amounts for the current fiscal year of the Fund. The Fund has not been in operation for a full calendar year, and therefore has no performance history. Performance history will be available for the Fund after it has been in operation for one calendar year.*

 

*page 1 of 3* PS25_21

**Fund Name Changes and Sub-Adviser Changes**

&nbsp;&nbsp;&nbsp;&nbsp;• Effective November 14, 2025, the following funds were
renamed and the following fund sub-adviser changes occurred:

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| | |
|:---|:---|
| **Current Fund Name** | **New Fund Name** |
| MML International Equity Fund<br>***Adviser:*** MML Investment Advisers, LLC<br> ***Sub-Advisers:*** Massachusetts Financial Services Company and Harris Associates L.P. | MML VIP MFS International Equity Fund<br>***Adviser:*** MML Investment Advisers, LLC<br> ***Sub-Adviser:*** Massachusetts Financial Services Company |
| MML Total Return Bond Fund<br>***Adviser:*** MML Investment Advisers, LLC<br> ***Sub-Adviser:*** Metropolitan West Asset Management, LLC | MML VIP Fidelity Institutional AM<sup>®</sup> Core Plus Bond Fund<br>***Adviser:*** MML Investment Advisers, LLC<br> ***Sub-Adviser:*** FIAM LLC |

---

 

&nbsp;&nbsp;&nbsp;&nbsp;• Effective November 14, 2025, the following funds were
renamed:

---

| | |
|:---|:---|
| **Current Fund Name** | **New Fund Name** |
| MML Large Cap Growth Fund | MML VIP Loomis Sayles Large Cap Growth Fund |
| MML Mid Cap Value Fund | MML VIP American Century Mid Cap Value Fund |
| MML Small Cap Equity Fund | MML VIP Invesco Small Cap Equity Fund |
| MML Small Company Value Fund | MML VIP American Century Small Company Value Fund |

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*page 2 of 3* PS25_21

&nbsp;&nbsp;&nbsp;&nbsp;• Effective on or about December 1, 2025, the following funds
will be renamed and the following fund sub-adviser changes will occur:

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| | |
|:---|:---|
| **Current Fund Name** | **New Fund Name** |
| Macquarie VIP Asset Strategy Series<br>***Adviser:*** Delaware Management Company<br> ***Sub-Advisers:*** Macquarie Investment Management Austria Kapitalanlage AG, Macquarie Investment Management Europe Limited, and Macquarie Investment Management Global Limited | Nomura VIP Asset Strategy Series<br>***Adviser:*** Delaware Management Company<br> ***Sub-Advisers:*** Nomura Investment Management Austria Kapitalanlage AG and Macquarie Investment Management Global Limited |
| Macquarie VIP Emerging Markets Series<br>***Adviser:*** Delaware Management Company<br> ***Sub-Adviser:*** Macquarie Investment Management Global Limited | Nomura VIP Emerging Markets Series<br>***Adviser:*** Delaware Management Company<br> ***Sub-Adviser:*** N/A |
| Macquarie VIP Science and Technology Series<br>***Adviser:*** Delaware Management Company<br> ***Sub-Adviser:*** Macquarie Investment Management Global Limited | Nomura VIP Science and Technology Series<br>***Adviser:*** Delaware Management Company<br> ***Sub-Adviser:*** N/A |
| Macquarie VIP Small Cap Value Series<br>***Adviser:*** Delaware Management Company<br> ***Sub-Adviser:*** Macquarie Investment Management Global Limited | Nomura VIP Small Cap Value Series<br>***Adviser:*** Delaware Management Company<br> ***Sub-Adviser:*** N/A |

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If you have questions about this supplement, or other product questions, you may contact your registered representative, visit us online at www.MassMutual.com/contact-us, or call our Administrative Office at (800) 665-2654, 8 a.m.**–**5 p.m. Eastern Time.

**For more information about the funds, read each fund prospectus. Prospectuses are available on our website at www.MassMutual.com.**

*page 3 of 3* PS25_21