# EDGAR Filing Document

**Accession Number:** 0001330967
**File Stem:** 0001752724-25-152210
**Filing Date:** 2025-6
**Character Count:** 14936
**Document Hash:** 9229122d9c037efe24f47cc67b9d3b9d
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001752724-25-152210.hdr.sgml**: 20250624

**ACCESSION NUMBER**: 0001752724-25-152210

**CONFORMED SUBMISSION TYPE**: NPORT-P

**PUBLIC DOCUMENT COUNT**: 1

**CONFORMED PERIOD OF REPORT**: 20250430

**FILED AS OF DATE**: 20250624

**DATE AS OF CHANGE**: 20250624

**PERIOD START**: 20250430

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** MFS SERIES TRUST XII
- **CENTRAL INDEX KEY:** 0001330967

**ORGANIZATION NAME:**
- **EIN:** 000000000
- **STATE OF INCORPORATION:** MA
- **FISCAL YEAR END:** 0430

**FILING VALUES:**
- **FORM TYPE:** NPORT-P
- **SEC ACT:** 1940 Act
- **SEC FILE NUMBER:** 811-21780
- **FILM NUMBER:** 251066840

**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:** MFS Series Trust XII
- **DATE OF NAME CHANGE:** 20050622

## Series and Classes Contracts Data

### MFS Lifetime 2035 Fund (Series ID: S000038774)

| Class ID   | Class Name   | Ticker Symbol   |
|:---|:---|:---|
| C000119431 | A            | LFEAX           |
| C000119432 | B            | LFEBX           |
| C000119433 | C            | LFECX           |
| C000119434 | I            | LFEDX           |
| C000119435 | R1           | LFERX           |
| C000119436 | R2           | LFESX           |
| C000119437 | R3           | LFETX           |
| C000119438 | R4           | LFEUX           |
| C000173231 | R6           | LFEKX           |

## 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 SERIES TRUST XII

- **b. Investment Company Act file number:** 811-21780

- **c. CIK number of Registrant:** 0001330967

- **d. LEI of Registrant:** 549300VVIIPRJRW6FR46

- **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 Lifetime 2035 Fund

- **b. EDGAR series identifier (if any):** S000038774

- **c. LEI of Series:** 549300CC3UY7JZFET524

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

- **a. Date of fiscal year-end:** 2025-04-30

- **b. Date as of which information is reported:** 2025-04-30

**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:** $604893935.56

**Total Liabilities:** $245191.40

**Net Assets:** $604648744.16

**Monthly Return Information**

| Class               | Month 1 Return (%)   | Month 2 Return (%)   | Month 3 Return (%)   |
|:---|:---|:---|:---|
| Class ID C000119435 | -0.22%               | -2.14%               | 0.11%                |
| Class ID C000173231 | -0.17%               | -2.05%               | 0.28%                |
| Class ID C000119437 | -0.17%               | -2.12%               | 0.23%                |
| Class ID C000119433 | -0.23%               | -2.17%               | 0.17%                |
| Class ID C000119432 | -0.22%               | -2.18%               | 0.17%                |
| Class ID C000119434 | -0.17%               | -2.07%               | 0.23%                |
| Class ID C000119438 | -0.11%               | -2.10%               | 0.28%                |
| Class ID C000119431 | -0.17%               | -2.07%               | 0.23%                |
| Class ID C000119436 | -0.17%               | -2.12%               | 0.23%                |

**Monthly Gains & Losses**

| Period   | Net Realized Gain/Loss   | Net Unrealized Appreciation/Depreciation   |
|:---|:---|:---|
| Month 1  | $-348060.51              | $-1257822.04                               |
| Month 2  | $-61340.30               | $-13718730.04                              |
| Month 3  | $-2745415.22             | $3562614.85                                |

### 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 Government Securities Fund                    | MFS Government Securities Fund                    | CUSIP: 552982712<br>LEI: UWWK6TDSOPDQSQMMEB12 | Long             | EC               | RF                | US        |   5686619 | NS      | $49246120.83  | 8.14%             |  |  |  | No            |                  1 | On Loan: No      |
| MFS Emerging Markets Debt Fund                    | MFS Emerging Markets Debt Fund                    | CUSIP: 552746364<br>LEI: 509D6AOZZ4SJ08T5BZ82 | Long             | EC               | RF                | US        |   1453576 | NS      | $17283021.51  | 2.86%             |  |  |  | No            |                  1 | On Loan: No      |
| MFS Research International Fund                   | MFS Research International Fund                   | CUSIP: 55273H361<br>LEI: UH91KW1VFNZQF5FY7237 | Long             | EC               | RF                | US        |    801870 | NS      | $19300998.96  | 3.19%             |  |  |  | No            |                  1 | On Loan: No      |
| MFS Blended Research Core Equity Fund             | MFS Blended Research Core Equity Fund             | CUSIP: 55273W483<br>LEI: SQK3NYUBFBKJ3GF1IO09 | Long             | EC               | RF                | US        |    675407 | NS      | $23166451.63  | 3.83%             |  |  |  | No            |                  1 | On Loan: No      |
| MFS Emerging Markets Equity Fund                  | MFS Emerging Markets Equity Fund                  | CUSIP: 552746331<br>LEI: GLINMRWNKCBOHYKQ2131 | Long             | EC               | RF                | US        |      8185 | NS      | $300232.07    | 0.05%             |  |  |  | No            |                  1 | On Loan: No      |
| MFS Growth Fund                                   | MFS Growth Fund                                   | CUSIP: 552985673<br>LEI: K4ZYIH3WSXKUSPKIPM59 | Long             | EC               | RF                | US        |    124538 | NS      | $23410625.98  | 3.87%             |  |  |  | No            |                  1 | On Loan: No      |
| MFS International New Discovery Fund              | MFS International New Discovery Fund              | CUSIP: 552981383<br>LEI: RC53GXLQZ5LVIZBRHR66 | Long             | EC               | RF                | US        |    215879 | NS      | $6882227.30   | 1.14%             |  |  |  | No            |                  1 | On Loan: No      |
| MFS New Discovery Value Fund                      | MFS New Discovery Value Fund                      | CUSIP: 552982696<br>LEI: LRMRW30Z8FYTIFW1W860 | Long             | EC               | RF                | US        |    290245 | NS      | $4760016.54   | 0.79%             |  |  |  | No            |                  1 | On Loan: No      |
| MFS Blended Research Value Equity Fund            | MFS Blended Research Value Equity Fund            | CUSIP: 552746133<br>LEI: 549300QL66OEPI6JSE90 | Long             | EC               | RF                | US        |   1645257 | NS      | $25024362.06  | 4.14%             |  |  |  | No            |                  1 | On Loan: No      |
| MFS High Income Fund                              | MFS High Income Fund                              | CUSIP: 552984684<br>LEI: DMVGFZCV67YA34LSI126 | Long             | EC               | RF                | US        |   7579996 | NS      | $23118988.35  | 3.82%             |  |  |  | No            |                  1 | On Loan: No      |
| MFS Blended Research Small Cap Equity Fund        | MFS Blended Research Small Cap Equity Fund        | CUSIP: 552743684<br>LEI: 549300R0MISDFKQQMH05 | Long             | EC               | RF                | US        |    748484 | NS      | $9625498.99   | 1.59%             |  |  |  | No            |                  1 | On Loan: No      |
| MFS International Intrinsic Value Fund            | MFS International Intrinsic Value Fund            | CUSIP: 552746349<br>LEI: 7540QFSKYNTDFH7HAK24 | Long             | EC               | RF                | US        |    254505 | NS      | $10154748.54  | 1.68%             |  |  |  | No            |                  1 | On Loan: No      |
| MFS Mid Cap Growth Fund                           | MFS Mid Cap Growth Fund                           | CUSIP: 552987554<br>LEI: XPX0WXKIO6CLKBLYF666 | Long             | EC               | RF                | US        |    753879 | NS      | $22812368.13  | 3.77%             |  |  |  | No            |                  1 | On Loan: No      |
| MFS Global Real Estate Fund                       | MFS Global Real Estate Fund                       | CUSIP: 552982720<br>LEI: ROYDM6SL56ZXYAENS860 | Long             | EC               | RF                | US        |   1210056 | NS      | $19372994.49  | 3.20%             |  |  |  | No            |                  1 | On Loan: No      |
| MFS Blended Research Mid Cap Equity Fund          | MFS Blended Research Mid Cap Equity Fund          | CUSIP: 552743551<br>LEI: 549300CJNZTXTE7DBK33 | Long             | EC               | RF                | US        |   3349024 | NS      | $44642488.99  | 7.38%             |  |  |  | No            |                  1 | On Loan: No      |
| MFS New Discovery Fund                            | MFS New Discovery Fund                            | CUSIP: 55273H346<br>LEI: ZVEMRLDGMDO1D1VDSU87 | Long             | EC               | RF                | US        |    170254 | NS      | $4927154.75   | 0.81%             |  |  |  | No            |                  1 | On Loan: No      |
| MFS Institutional Money Market Portfolio          | MFS Institutional Money Market Portfolio          | CUSIP: 55291X109<br>LEI: 5L2W638H85N8T1136O07 | Long             | EC               | RF                | US        |  13299378 | NS      | $13299378.03  | 2.20%             |  |  |  | No            |                  1 | On Loan: No      |
| MFS Blended Research Growth Equity Fund           | MFS Blended Research Growth Equity Fund           | CUSIP: 552743783<br>LEI: 549300M0GLI3GVVPMM34 | Long             | EC               | RF                | US        |   1029566 | NS      | $23607956.04  | 3.90%             |  |  |  | No            |                  1 | On Loan: No      |
| MFS Research Fund                                 | MFS Research Fund                                 | CUSIP: 552981391<br>LEI: XFPOOG2XVG5TW1LZ8588 | Long             | EC               | RF                | US        |    425923 | NS      | $23063717.89  | 3.81%             |  |  |  | No            |                  1 | On Loan: No      |
| MFS Research Bond Fund                            | MFS Research Bond Fund                            | CUSIP: 55274K603<br>LEI: FJAEEQMSDDUK9QL2E558 | Long             | EC               | RF                | US        |   4775325 | NS      | $45461092.89  | 7.52%             |  |  |  | No            |                  1 | On Loan: No      |
| MFS Global Opportunistic Bond Fund                | MFS Global Opportunistic Bond Fund                | CUSIP: 552743882<br>LEI: XE280U8NKIY4V6K1JN70 | Long             | EC               | RF                | US        |   3376262 | NS      | $27584063.78  | 4.56%             |  |  |  | No            |                  1 | On Loan: No      |
| MFS Value Fund                                    | MFS Value Fund                                    | CUSIP: 55273H353<br>LEI: HV6C0RMURVKFUQ3UTB42 | Long             | EC               | RF                | US        |    512078 | NS      | $24933056.74  | 4.12%             |  |  |  | No            |                  1 | On Loan: No      |
| MFS Inflation Adjusted Bond Fund                  | MFS Inflation Adjusted Bond Fund                  | CUSIP: 55274K884<br>LEI: VOHO802M9IKG3IZTEN75 | Long             | EC               | RF                | US        |   4245485 | NS      | $39185828.13  | 6.48%             |  |  |  | No            |                  1 | On Loan: No      |
| MFS Commodity Strategy Fund                       | MFS Commodity Strategy Fund                       | CUSIP: 55276T826<br>LEI: T0OEQ8I3F6DXUJCOV412 | Long             | EC               | RF                | US        |   4935826 | NS      | $18114479.77  | 3.00%             |  |  |  | No            |                  1 | On Loan: No      |
| MFS Blended Research Emerging Markets Equity Fund | MFS Blended Research Emerging Markets Equity Fund | CUSIP: 552987240<br>LEI: 549300N4Y1QEM5QDU861 | Long             | EC               | RF                | US        |     21101 | NS      | $300051.24    | 0.05%             |  |  |  | No            |                  1 | On Loan: No      |
| MFS Blended Research International Equity Fund    | MFS Blended Research International Equity Fund    | CUSIP: 552987448<br>LEI: 254900SJDP6D81SAVM86 | Long             | EC               | RF                | US        |   2789778 | NS      | $39782235.14  | 6.58%             |  |  |  | No            |                  1 | On Loan: No      |
| MFS Mid Cap Value Fund                            | MFS Mid Cap Value Fund                            | CUSIP: 55273W475<br>LEI: BXHSCSBXYY1DOHP6E209 | Long             | EC               | RF                | US        |    739053 | NS      | $21986819.43  | 3.64%             |  |  |  | No            |                  1 | On Loan: No      |
| MFS Emerging Markets Debt Local Currency Fund     | MFS Emerging Markets Debt Local Currency Fund     | CUSIP: 552746323<br>LEI: 5493001KPK8UJ27DMD68 | Long             | EC               | RF                | US        |   2114084 | NS      | $11754304.23  | 1.94%             |  |  |  | No            |                  1 | On Loan: No      |
| MFS International Growth Fund                     | MFS International Growth Fund                     | CUSIP: 552746356<br>LEI: PTNAY8DC4VJYOKVJ5B83 | Long             | EC               | RF                | US        |    226072 | NS      | $10130306.08  | 1.68%             |  |  |  | No            |                  1 | On Loan: No      |

### Signature

**Date Signed:** 2025-05-15

**Name of Applicant:** MFS SERIES TRUST XII

**Signature:** James Byrne

**Name of Signer:** James Byrne

**Title:** Assistant Treasurer