# EDGAR Filing Document

**Accession Number:** 0001330967
**File Stem:** 0001752724-25-152201
**Filing Date:** 2025-6
**Character Count:** 14074
**Document Hash:** 81238709aab588bd94f502d80a659de8
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001752724-25-152201.hdr.sgml**: 20250624

**ACCESSION NUMBER**: 0001752724-25-152201

**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:** 251066832

**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 2025 Fund (Series ID: S000038773)

| Class ID   | Class Name   | Ticker Symbol   |
|:---|:---|:---|
| C000119423 | B            | LTTBX           |
| C000119424 | C            | LTTCX           |
| C000119425 | I            | LTTIX           |
| C000119426 | R1           | LTTRX           |
| C000119427 | R2           | LTTSX           |
| C000119428 | R3           | LTTTX           |
| C000119429 | R4           | LTTUX           |
| C000119430 | A            | LTTAX           |
| C000173230 | R6           | LTTKX           |

## 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 2025 Fund

- **b. EDGAR series identifier (if any):** S000038773

- **c. LEI of Series:** 549300FD1OUZIFXJIP34

**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:** $350869499.05

**Total Liabilities:** $329705.16

**Net Assets:** $350539793.89

**Monthly Return Information**

| Class               | Month 1 Return (%)   | Month 2 Return (%)   | Month 3 Return (%)   |
|:---|:---|:---|:---|
| Class ID C000119428 | 0.76%                | -0.91%               | 0.08%                |
| Class ID C000119423 | 0.68%                | -0.98%               | 0.08%                |
| Class ID C000119425 | 0.76%                | -0.83%               | 0.08%                |
| Class ID C000119424 | 0.69%                | -1.00%               | 0.08%                |
| Class ID C000173230 | 0.76%                | -0.90%               | 0.15%                |
| Class ID C000119429 | 0.68%                | -0.83%               | 0.15%                |
| Class ID C000119426 | 0.68%                | -0.98%               | 0.08%                |
| Class ID C000119430 | 0.69%                | -0.91%               | 0.15%                |
| Class ID C000119427 | 0.69%                | -0.91%               | 0.08%                |

**Monthly Gains & Losses**

| Period   | Net Realized Gain/Loss   | Net Unrealized Appreciation/Depreciation   |
|:---|:---|:---|
| Month 1  | $-403898.05              | $2211374.38                                |
| Month 2  | $-166501.31              | $-3818577.22                               |
| Month 3  | $-224792.88              | $-67564.53                                 |

### 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        |   3832846 | NS      | $33192449.54  | 9.47%             |  |  |  | No            |                  1 | On Loan: No      |
| MFS Emerging Markets Debt Fund                 | MFS Emerging Markets Debt Fund                 | CUSIP: 552746364<br>LEI: 509D6AOZZ4SJ08T5BZ82 | Long             | EC               | RF                | US        |    319649 | NS      | $3800622.90   | 1.08%             |  |  |  | No            |                  1 | On Loan: No      |
| MFS Research International Fund                | MFS Research International Fund                | CUSIP: 55273H361<br>LEI: UH91KW1VFNZQF5FY7237 | Long             | EC               | RF                | US        |    228945 | NS      | $5510704.15   | 1.57%             |  |  |  | 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        |    177005 | NS      | $6071261.04   | 1.73%             |  |  |  | No            |                  1 | On Loan: No      |
| MFS Growth Fund                                | MFS Growth Fund                                | CUSIP: 552985673<br>LEI: K4ZYIH3WSXKUSPKIPM59 | Long             | EC               | RF                | US        |     32522 | NS      | $6113493.27   | 1.74%             |  |  |  | No            |                  1 | On Loan: No      |
| MFS New Discovery Value Fund                   | MFS New Discovery Value Fund                   | CUSIP: 552982696<br>LEI: LRMRW30Z8FYTIFW1W860 | Long             | EC               | RF                | US        |    106052 | NS      | $1739255.74   | 0.50%             |  |  |  | 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        |    482998 | NS      | $7346403.99   | 2.10%             |  |  |  | No            |                  1 | On Loan: No      |
| MFS High Income Fund                           | MFS High Income Fund                           | CUSIP: 552984684<br>LEI: DMVGFZCV67YA34LSI126 | Long             | EC               | RF                | US        |   2494542 | NS      | $7608354.40   | 2.17%             |  |  |  | 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        |    271592 | NS      | $3492667.27   | 1.00%             |  |  |  | No            |                  1 | On Loan: No      |
| MFS International Intrinsic Value Fund         | MFS International Intrinsic Value Fund         | CUSIP: 552746349<br>LEI: 7540QFSKYNTDFH7HAK24 | Long             | EC               | RF                | US        |     48790 | NS      | $1946702.21   | 0.56%             |  |  |  | No            |                  1 | On Loan: No      |
| MFS Mid Cap Growth Fund                        | MFS Mid Cap Growth Fund                        | CUSIP: 552987554<br>LEI: XPX0WXKIO6CLKBLYF666 | Long             | EC               | RF                | US        |    182832 | NS      | $5532490.99   | 1.58%             |  |  |  | No            |                  1 | On Loan: No      |
| MFS Global Real Estate Fund                    | MFS Global Real Estate Fund                    | CUSIP: 552982720<br>LEI: ROYDM6SL56ZXYAENS860 | Long             | EC               | RF                | US        |    442155 | NS      | $7078905.14   | 2.02%             |  |  |  | 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        |    817502 | NS      | $10897307.51  | 3.11%             |  |  |  | No            |                  1 | On Loan: No      |
| MFS New Discovery Fund                         | MFS New Discovery Fund                         | CUSIP: 55273H346<br>LEI: ZVEMRLDGMDO1D1VDSU87 | Long             | EC               | RF                | US        |     61381 | NS      | $1776353.78   | 0.51%             |  |  |  | No            |                  1 | On Loan: No      |
| MFS Institutional Money Market Portfolio       | MFS Institutional Money Market Portfolio       | CUSIP: 55291X109<br>LEI: 5L2W638H85N8T1136O07 | Long             | EC               | RF                | US        |   8663750 | NS      | $8663750.42   | 2.47%             |  |  |  | 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        |    266904 | NS      | $6120110.46   | 1.75%             |  |  |  | No            |                  1 | On Loan: No      |
| MFS Research Fund                              | MFS Research Fund                              | CUSIP: 552981391<br>LEI: XFPOOG2XVG5TW1LZ8588 | Long             | EC               | RF                | US        |    112141 | NS      | $6072422.10   | 1.73%             |  |  |  | No            |                  1 | On Loan: No      |
| MFS Research Bond Fund                         | MFS Research Bond Fund                         | CUSIP: 55274K603<br>LEI: FJAEEQMSDDUK9QL2E558 | Long             | EC               | RF                | US        |   6957422 | NS      | $66234658.22  | 18.90%            |  |  |  | No            |                  1 | On Loan: No      |
| MFS Global Opportunistic Bond Fund             | MFS Global Opportunistic Bond Fund             | CUSIP: 552743882<br>LEI: XE280U8NKIY4V6K1JN70 | Long             | EC               | RF                | US        |   2996294 | NS      | $24479720.08  | 6.98%             |  |  |  | No            |                  1 | On Loan: No      |
| MFS Value Fund                                 | MFS Value Fund                                 | CUSIP: 55273H353<br>LEI: HV6C0RMURVKFUQ3UTB42 | Long             | EC               | RF                | US        |    150764 | NS      | $7340701.35   | 2.09%             |  |  |  | No            |                  1 | On Loan: No      |
| MFS Inflation Adjusted Bond Fund               | MFS Inflation Adjusted Bond Fund               | CUSIP: 55274K884<br>LEI: VOHO802M9IKG3IZTEN75 | Long             | EC               | RF                | US        |   3789918 | NS      | $34980942.62  | 9.98%             |  |  |  | No            |                  1 | On Loan: No      |
| MFS Commodity Strategy Fund                    | MFS Commodity Strategy Fund                    | CUSIP: 55276T826<br>LEI: T0OEQ8I3F6DXUJCOV412 | Long             | EC               | RF                | US        |   1848347 | NS      | $6783432.26   | 1.94%             |  |  |  | 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        |    662343 | NS      | $9445018.21   | 2.69%             |  |  |  | No            |                  1 | On Loan: No      |
| MFS Ltd Maturity Fund                          | MFS Ltd Maturity Fund                          | CUSIP: 55274K801<br>LEI: 7ER38PJ2TK60L3Y32478 | Long             | EC               | RF                | US        |  11275151 | NS      | $66297885.80  | 18.91%            |  |  |  | No            |                  1 | On Loan: No      |
| MFS Mid Cap Value Fund                         | MFS Mid Cap Value Fund                         | CUSIP: 55273W475<br>LEI: BXHSCSBXYY1DOHP6E209 | Long             | EC               | RF                | US        |    181495 | NS      | $5399461.58   | 1.54%             |  |  |  | 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        |    698460 | NS      | $3883438.01   | 1.11%             |  |  |  | No            |                  1 | On Loan: No      |
| MFS International Growth Fund                  | MFS International Growth Fund                  | CUSIP: 552746356<br>LEI: PTNAY8DC4VJYOKVJ5B83 | Long             | EC               | RF                | US        |     43475 | NS      | $1948136.48   | 0.56%             |  |  |  | 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