# EDGAR Filing Document

**Accession Number:** 0001065698
**File Stem:** 0001410368-26-016699
**Filing Date:** 2026-2
**Character Count:** 10966
**Document Hash:** fe7a082fc1be8192d7b62cb58da1244b
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001410368-26-016699.hdr.sgml**: 20260224

**ACCESSION NUMBER**: 0001410368-26-016699

**CONFORMED SUBMISSION TYPE**: NPORT-P

**PUBLIC DOCUMENT COUNT**: 1

**CONFORMED PERIOD OF REPORT**: 20251231

**FILED AS OF DATE**: 20260224

**DATE AS OF CHANGE**: 20260224

**PERIOD START**: 20251231

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** MFS VARIABLE INSURANCE TRUST III
- **CENTRAL INDEX KEY:** 0001065698

**ORGANIZATION NAME:**
- **EIN:** 000000000
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** NPORT-P
- **SEC ACT:** 1940 Act
- **SEC FILE NUMBER:** 811-08879
- **FILM NUMBER:** 26668415

**BUSINESS ADDRESS:**
- **STREET 1:** 111 HUNTINGTON AVENUE
- **CITY:** BOSTON
- **STATE:** MA
- **ZIP:** 02199
- **BUSINESS PHONE:** 617-954-5000

**MAIL ADDRESS:**
- **STREET 1:** 111 HUNTINGTON AVENUE
- **CITY:** BOSTON
- **STATE:** MA
- **ZIP:** 02199

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** SUN CAPITAL ADVISERS TRUST
- **DATE OF NAME CHANGE:** 19980709

## Series and Classes Contracts Data

### MFS Growth Allocation Portfolio (Series ID: S000023373)

| Class ID   | Class Name    | Ticker Symbol   |
|:---|:---|:---|
| C000068444 | Initial Class |  |
| C000068445 | Service Class |  |

## Form NPORT-P: Monthly Portfolio Investments Report

### NPORT-P: Part A: General Information

**Item A.1. Information about the Registrant.**

- **a. Name of Registrant:** MFS VARIABLE INSURANCE TRUST III

- **b. Investment Company Act file number:** 811-08879

- **c. CIK number of Registrant:** 0001065698

- **d. LEI of Registrant:** 549300QPPZUNGK3D0K61

- **e. Address and telephone number of Registrant.**

  - **Street Address 1:** 111 HUNTINGTON AVENUE

  - **City:** BOSTON

  - **State:** MA

  - **Foreign country:** US

  - **Zip / Postal Code:** 02199

  - **Telephone number:** 617-954-5000

**Item A.2. Information about the Series.**

- **a. Name of Series:** MFS Growth Allocation Portfolio

- **b. EDGAR series identifier (if any):** S000023373

- **c. LEI of Series:** 54930042PRE3Y8FI7E86

**Item A.3. Reporting period.**

- **a. Date of fiscal year-end:** 2025-12-31

- **b. Date as of which information is reported:** 2025-12-31

**Item A.4. Final filing**

Does the Fund anticipate that this will be its final filing on Form N-PORT? **No**

### Fund Information

**Total Assets:** $342360922.57

**Total Liabilities:** $84449.60

**Net Assets:** $342276472.97

**Monthly Return Information**

| Class               | Month 1 Return (%)   | Month 2 Return (%)   | Month 3 Return (%)   |
|:---|:---|:---|:---|
| Class ID C000068444 | 0.00%                | 0.57%                | 0.28%                |
| Class ID C000068445 | 0.00%                | 0.66%                | 0.19%                |

**Monthly Gains & Losses**

| Period   | Net Realized Gain/Loss   | Net Unrealized Appreciation/Depreciation   |
|:---|:---|:---|
| Month 1  | $-21378.44               | $36199.96                                  |
| Month 2  | $-48627.80               | $2306658.99                                |
| Month 3  | $32864.22                | $764650.22                                 |

### Schedule of Portfolio Investments

| Name                                                                    | Title                                                                   | Identifiers                                   | Payoff Profile   | Asset Category   | Issuer Category   | Country   |   Balance | Units   | Value (USD)   | % of Net Assets   | Maturity Date   | Coupon Type   | Annualized Rate (%)   | Restricted?   |   Fair Value Level | Lending Status   |
|:---|:---|:---|:---|:---|:---|:---|---:|:---|:---|:---|:---|:---|:---|:---|---:|:---|
| MFS Growth Series                                                       | MFS Growth Series                                                       | CUSIP: 55273F100<br>LEI: IVAD1C1VZOLTR3W5MQ64 | Long             | EC               | RF                | US        |    515682 | NS      | $34989025.87  | 10.22%            |  |  |  | No            |                  1 | On Loan: No      |
| MFS Variable Insurance Trust - Research Series                          | MFS Variable Insurance Trust - Research Series                          | CUSIP: 55273F308<br>LEI: 7AZFU5SPWYPK4FGVLU76 | Long             | EC               | RF                | US        |   1035946 | NS      | $31586008.45  | 9.23%             |  |  |  | No            |                  1 | On Loan: No      |
| MFS Variable Insurance Trust - MFS Value Series                         | MFS Variable Insurance Trust - MFS Value Series                         | CUSIP: 55273F654<br>LEI: 36LLVSYF4DQZKJ4FYT68 | Long             | EC               | RF                | US        |   1691193 | NS      | $37645952.95  | 11.00%            |  |  |  | No            |                  1 | On Loan: No      |
| MFS VIT Mid Cap Growth Series                                           | MFS VIT Mid Cap Growth Series                                           | CUSIP: 55273F670<br>LEI: DQS0BFT7TBCF2MYV2M94 | Long             | EC               | RF                | US        |   3822898 | NS      | $30506726.87  | 8.91%             |  |  |  | No            |                  1 | On Loan: No      |
| MFS New Discovery Series                                                | MFS New Discovery Series                                                | CUSIP: 55273F845<br>LEI: UL64BH8MFVUS63PN5829 | Long             | EC               | RF                | US        |    432780 | NS      | $6751366.74   | 1.97%             |  |  |  | No            |                  1 | On Loan: No      |
| MFS Total Return Bond Series                                            | MFS Total Return Bond Series                                            | CUSIP: 55273F878<br>LEI: OBXD0C7FWK5N6XF1PG71 | Long             | EC               | RF                | US        |   1311068 | NS      | $15444377.97  | 4.51%             |  |  |  | No            |                  1 | On Loan: No      |
| MFS Variable Insurance Trust II - MFS Research International Portfolio  | MFS Variable Insurance Trust II - MFS Research International Portfolio  | CUSIP: 55274F356<br>LEI: X2VCGKUPS3KBELF38X91 | Long             | EC               | RF                | US        |   1714353 | NS      | $35332817.74  | 10.32%            |  |  |  | No            |                  1 | On Loan: No      |
| MFS VIT II - International Intrinsic Value Portfolio                    | MFS VIT II - International Intrinsic Value Portfolio                    | CUSIP: 55274F455<br>LEI: R8FUCFNPB06NBDV4PQ02 | Long             | EC               | RF                | US        |    476609 | NS      | $17620228.26  | 5.15%             |  |  |  | No            |                  1 | On Loan: No      |
| MFS Variable Insurance Trust II - MFS International Growth Portfolio    | MFS Variable Insurance Trust II - MFS International Growth Portfolio    | CUSIP: 55274F463<br>LEI: 8UVRTCWHDB4PB6VBAF77 | Long             | EC               | RF                | US        |    979950 | NS      | $17580310.36  | 5.14%             |  |  |  | No            |                  1 | On Loan: No      |
| MFS High Yield Portfolio                                                | MFS High Yield Portfolio                                                | CUSIP: 55274F471<br>LEI: ZJO44YL9IRHSPRALW090 | Long             | EC               | RF                | US        |   3380769 | NS      | $17208114.67  | 5.03%             |  |  |  | No            |                  1 | On Loan: No      |
| MFS Variable Insurance Trust II - MFS Global Governments Portfolio      | MFS Variable Insurance Trust II - MFS Global Governments Portfolio      | CUSIP: 55274F539<br>LEI: 6UIE5ULN0F0W22N47U94 | Long             | EC               | RF                | US        |   1560069 | NS      | $13728605.00  | 4.01%             |  |  |  | No            |                  1 | On Loan: No      |
| MFS Variable Insurance Trust II - MFS Emerging Markets Equity Portfolio | MFS Variable Insurance Trust II - MFS Emerging Markets Equity Portfolio | CUSIP: 55274F554<br>LEI: 0ZF3BKK2HYOQKNENVD39 | Long             | EC               | RF                | US        |    199960 | NS      | $3529302.90   | 1.03%             |  |  |  | No            |                  1 | On Loan: No      |
| MFS Institutional Money Market Portfolio                                | MFS Institutional Money Market Portfolio                                | CUSIP: 55291X109<br>LEI: 5L2W638H85N8T1136O07 | Long             | EC               | RF                | US        |   5148219 | NS      | $5149248.78   | 1.50%             |  |  |  | No            |                  1 | On Loan: No      |
| MFS VIT III Global Real Estate Portfolio                                | MFS VIT III Global Real Estate Portfolio                                | CUSIP: 86664T300<br>LEI: 549300YBJ6K5SOLBY732 | Long             | EC               | RF                | US        |   1351783 | NS      | $17154126.54  | 5.01%             |  |  |  | No            |                  1 | On Loan: No      |
| MFS VIT III Inflation Adjusted Bond Portfolio                           | MFS VIT III Inflation Adjusted Bond Portfolio                           | CUSIP: 86664T359<br>LEI: 5493008RHGZT7FZTCC74 | Long             | EC               | RF                | US        |   2124391 | NS      | $17186320.76  | 5.02%             |  |  |  | No            |                  1 | On Loan: No      |
| MFS VIT III New Discovery Value Portfolio                               | MFS VIT III New Discovery Value Portfolio                               | CUSIP: 86664T441<br>LEI: 549300X8U0YDKOFKNA72 | Long             | EC               | RF                | US        |    920548 | NS      | $6784441.21   | 1.98%             |  |  |  | No            |                  1 | On Loan: No      |
| MFS VIT III Mid Cap Value Portfolio                                     | MFS VIT III Mid Cap Value Portfolio                                     | CUSIP: 86664T532<br>LEI: 549300DTS6NIQDMEIL78 | Long             | EC               | RF                | US        |   3032544 | NS      | $30659024.11  | 8.96%             |  |  |  | No            |                  1 | On Loan: No      |
| MFS Variable Insurance Trust III - MFS Limited Maturity Portfolio       | MFS Variable Insurance Trust III - MFS Limited Maturity Portfolio       | CUSIP: 86664T540<br>LEI: 549300278SPJGR06E765 | Long             | EC               | RF                | US        |    336527 | NS      | $3439303.27   | 1.00%             |  |  |  | No            |                  1 | On Loan: No      |

### Signature

**Date Signed:** 2026-01-21

**Name of Applicant:** MFS VARIABLE INSURANCE TRUST III

**Signature:** James Byrne

**Name of Signer:** James Byrne

**Title:** Assistant Treasurer