# EDGAR Filing Document

**Accession Number:** 0000783740
**File Stem:** 0001683863-23-001013
**Filing Date:** 2023-2
**Character Count:** 4397
**Document Hash:** b95c7c41eed15fe790ee824294e8ae5d
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001683863-23-001013.hdr.sgml**: 20230221

**ACCESSION NUMBER**: 0001683863-23-001013

**CONFORMED SUBMISSION TYPE**: 24F-2NT

**PUBLIC DOCUMENT COUNT**: 1

**CONFORMED PERIOD OF REPORT**: 20221130

**FILED AS OF DATE**: 20230221

**DATE AS OF CHANGE**: 20230221

**EFFECTIVENESS DATE**: 20230221

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** MFS SERIES TRUST X
- **CENTRAL INDEX KEY:** 0000783740
- **IRS NUMBER:** 000000000
- **STATE OF INCORPORATION:** MA
- **FISCAL YEAR END:** 1130

**FILING VALUES:**
- **FORM TYPE:** 24F-2NT
- **SEC ACT:** 1933 Act
- **SEC FILE NUMBER:** 033-01657
- **FILM NUMBER:** 23646544

**BUSINESS ADDRESS:**
- **STREET 1:** 111 HUNTINGTON AVENUE
- **STREET 2:** 21ST FLOOR
- **CITY:** BOSTON
- **STATE:** MA
- **ZIP:** 02199
- **BUSINESS PHONE:** 18006372929

**MAIL ADDRESS:**
- **STREET 1:** 111 HUNTINGTON AVENUE
- **STREET 2:** 21ST FLOOR
- **CITY:** BOSTON
- **STATE:** MA
- **ZIP:** 02199

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** MFS GOVERNMENT MORTGAGE FUND
- **DATE OF NAME CHANGE:** 19930408

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** MFS GOVERNMENT INCOME PLUS FUND
- **DATE OF NAME CHANGE:** 19930312

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** MASSACHUSETTS MFS GOVERNMENT INCOME PLUS FUND
- **DATE OF NAME CHANGE:** 19921015

## Series and Classes Contracts Data

### MFS Global Opportunistic Bond Fund (Series ID: S000028956)

---

|  |  |  |
|:---|:---|:---|
| Class Name | Ticker Symbol | Class ID   |
| A          | MGBAX         | C000088935 |
| B          | MGBBX         | C000088936 |
| C          | MGBDX         | C000088937 |
| I          | MGBJX         | C000088938 |
| R1         | MGBKX         | C000088939 |
| R2         | MGBLX         | C000088940 |
| R3         | MGBMX         | C000088941 |
| R4         | MGBNX         | C000088942 |
| R6         | MGBOX         | C000120923 |

---

## Series and Classes Contracts Data

### MFS Global Opportunistic Bond Fund (Series ID: S000028956)

| Class ID   | Class Name   | Ticker Symbol   |
|:---|:---|:---|
| C000088935 | A            | MGBAX           |
| C000088936 | B            | MGBBX           |
| C000088937 | C            | MGBDX           |
| C000088938 | I            | MGBJX           |
| C000088939 | R1           | MGBKX           |
| C000088940 | R2           | MGBLX           |
| C000088941 | R3           | MGBMX           |
| C000088942 | R4           | MGBNX           |
| C000120923 | R6           | MGBOX           |

## FORM 24F-2NT: Annual Notice of Securities Sold Pursuant to Rule 24f-2

### 24F-2NT: Filer Information

**Filer CIK:** 783740

**Is this a LIVE or TEST Filing?:** LIVE

**Filer Investment Company Type:** N-1A

### 24F-2NT: Annual Filing Information

**1. Name and address of issuer:**

- **Name of Issuer:** MFS Series Trust X

- **Address:** 111 Huntington Avenue, Boston, MA 02199

**2. The Name and EDGAR Identifier of each series or class of securities for which this Form is filed:**

- [ ] Check box if the Form is being filed for all series and classes of the issuer.

**3. Investment Company Act File Number:** 811-4492

   **Securities Act File Number:** 033-01657

**4(a). Last day of fiscal year for which this Form is filed:** 11/30/2022

**4(b). Check box if this Form is being filed late:** [ ]

**4(c). Check box if this is the last time the issuer will be filing this Form:** [ ]

**5. Calculation of registration fee:**

- **(i) Aggregate sale price of securities sold during the fiscal year:** $140964323.00

- **(ii) Aggregate price of securities redeemed or repurchased during the fiscal year:** $190702813.00

- **(iii) Aggregate price of securities redeemed or repurchased during any prior fiscal year:** $0.00

- **(iv) Total available redemption credits [add Items 5(ii) and 5(iii)]:** $190702813.00

- **(v) Net sales:** $0.00

- **(vi) Redemption credits available for use in future years:** $-49738490.00

- **(vii) Multiplier for determining registration fee:** 0.0001102

- **(viii) Registration fee due:** $0.00

- **7. Interest due -- if this Form is being filed more than 90 days after the end of the issuer's fiscal year:** $0.00

- **8. Total of the amount of the registration fee due plus any interest due:** $0.00

**Signatures**

**Name and Title:** David L. DiLorenzo President

**Date:** 02/16/2023

**Signature:** David L. DiLorenzo