# EDGAR Filing Document

**Accession Number:** 0000063068
**File Stem:** 0002071691-26-008224
**Filing Date:** 2026-4
**Character Count:** 41126
**Document Hash:** 4d7cf96b7e7336cc9fc59d3636212038
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0002071691-26-008224.hdr.sgml**: 20260422

**ACCESSION NUMBER**: 0002071691-26-008224

**CONFORMED SUBMISSION TYPE**: NPORT-P

**PUBLIC DOCUMENT COUNT**: 1

**CONFORMED PERIOD OF REPORT**: 20260228

**FILED AS OF DATE**: 20260422

**DATE AS OF CHANGE**: 20260422

**PERIOD START**: 20260831

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** MFS SERIES TRUST IV
- **CENTRAL INDEX KEY:** 0000063068

**ORGANIZATION NAME:**
- **EIN:** 046382595
- **STATE OF INCORPORATION:** MA
- **FISCAL YEAR END:** 1031

**FILING VALUES:**
- **FORM TYPE:** NPORT-P
- **SEC ACT:** 1940 Act
- **SEC FILE NUMBER:** 811-02594
- **FILM NUMBER:** 26882495

**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 MUNICIPAL BOND FUND /MA/
- **DATE OF NAME CHANGE:** 19930910

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** MASSACHUSETTS CASH MANAGEMENT TRUST
- **DATE OF NAME CHANGE:** 19920703

## Series and Classes Contracts Data

### MFS Mid Cap Growth Fund (Series ID: S000002434)

| Class ID   | Class Name   | Ticker Symbol   |
|:---|:---|:---|
| C000006504 | A            | OTCAX           |
| C000006505 | R4           | OTCJX           |
| C000006509 | B            | OTCBX           |
| C000006510 | C            | OTCCX           |
| C000006511 | I            | OTCIX           |
| C000006513 | R1           | OTCGX           |
| C000006515 | R2           | MCPRX           |
| C000006516 | R3           | OTCHX           |
| C000124428 | R6           | OTCKX           |

## 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 IV

- **b. Investment Company Act file number:** 811-02594

- **c. CIK number of Registrant:** 0000063068

- **d. LEI of Registrant:** 549300SSA281MOJG8J61

- **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 Mid Cap Growth Fund

- **b. EDGAR series identifier (if any):** S000002434

- **c. LEI of Series:** XPX0WXKIO6CLKBLYF666

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

- **a. Date of fiscal year-end:** 2026-08-31

- **b. Date as of which information is reported:** 2026-02-28

**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:** $13822892939.69

**Total Liabilities:** $33996308.67

**Net Assets:** $13788896631.02

**Monthly Return Information**

| Class               | Month 1 Return (%)   | Month 2 Return (%)   | Month 3 Return (%)   |
|:---|:---|:---|:---|
| Class ID C000006504 | -1.69%               | -0.63%               | 0.56%                |
| Class ID C000006505 | -1.68%               | -0.63%               | 0.59%                |
| Class ID C000006509 | -1.77%               | -0.73%               | 0.56%                |
| Class ID C000006510 | -1.73%               | -0.76%               | 0.59%                |
| Class ID C000006511 | -1.67%               | -0.64%               | 0.61%                |
| Class ID C000006513 | -1.78%               | -0.67%               | 0.51%                |
| Class ID C000006515 | -1.74%               | -0.66%               | 0.58%                |
| Class ID C000006516 | -1.73%               | -0.64%               | 0.60%                |
| Class ID C000124428 | -1.67%               | -0.63%               | 0.64%                |

**Monthly Gains & Losses**

| Period   | Net Realized Gain/Loss   | Net Unrealized Appreciation/Depreciation   |
|:---|:---|:---|
| Month 1  | $287722852.12            | $-528120433.90                             |
| Month 2  | $191679417.40            | $-265916694.47                             |
| Month 3  | $-132616092.37           | $216766704.00                              |

### 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   |
|:---|:---|:---|:---|:---|:---|:---|---:|:---|:---|:---|:---|:---|:---|:---|---:|:---|
| Antofagasta plc                                | Antofagasta plc                                   | CUSIP: N/A<br>LEI: 213800MY6QVH4FVLD628       | Long             | EC               | CORP              | GB        |    254351 | NS      | $14629685.02  | 0.11%             |  |  |  | No            |                  1 | On Loan: No      |
| Agilent Technologies, Inc.                     | Agilent Technologies, Inc.                        | CUSIP: 00846U101<br>LEI: QUIX8Y7A2WP0XRMW7G29 | Long             | EC               | CORP              | US        |   1411097 | NS      | $171278953.86 | 1.24%             |  |  |  | No            |                  1 | On Loan: No      |
| Alcoa Corp.                                    | Alcoa Corp.                                       | CUSIP: 013872106<br>LEI: 549300T12EZ1F6PWWU29 | Long             | EC               | CORP              | US        |    212039 | NS      | $13163381.12  | 0.10%             |  |  |  | No            |                  1 | On Loan: No      |
| Alnylam Pharmaceuticals, Inc.                  | Alnylam Pharmaceuticals, Inc.                     | CUSIP: 02043Q107<br>LEI: 529900S3ZI14OWRJII50 | Long             | EC               | CORP              | US        |    331878 | NS      | $110488823.76 | 0.80%             |  |  |  | No            |                  1 | On Loan: No      |
| AMETEK, Inc.                                   | AMETEK, Inc.                                      | CUSIP: 031100100<br>LEI: 549300WZDEF9KKE40E98 | Long             | EC               | CORP              | US        |    456831 | NS      | $109283111.82 | 0.79%             |  |  |  | No            |                  1 | On Loan: No      |
| Antero Resources Corp.                         | Antero Resources Corp.                            | CUSIP: 03674X106<br>LEI: APVBKPOULHUX7YZLKU17 | Long             | EC               | CORP              | US        |   1729392 | NS      | $63658919.52  | 0.46%             |  |  |  | No            |                  1 | On Loan: No      |
| Applied Industrial Technologies, Inc.          | Applied Industrial Technologies, Inc.             | CUSIP: 03820C105<br>LEI: 549300NU173IJRC6PO38 | Long             | EC               | CORP              | US        |    218765 | NS      | $61818613.70  | 0.45%             |  |  |  | No            |                  1 | On Loan: No      |
| Aramark                                        | Aramark                                           | CUSIP: 03852U106<br>LEI: 549300MR6PG2DWZUIL39 | Long             | EC               | CORP              | US        |   2485660 | NS      | $104024871.00 | 0.75%             |  |  |  | No            |                  1 | On Loan: No      |
| Ares Management Corp.                          | Ares Management Corp.                             | CUSIP: 03990B101<br>LEI: 529900JUV61FH7B8VW38 | Long             | EC               | CORP              | US        |    640121 | NS      | $71699953.21  | 0.52%             |  |  |  | No            |                  1 | On Loan: No      |
| Ascendis Pharma A/S                            | Ascendis Pharma A/S                               | CUSIP: 04351P101<br>LEI: 549300B66JN3W3J8GH73 | Long             | EC               | CORP              | DK        |   1279738 | NS      | $298818823.00 | 2.17%             |  |  |  | No            |                  1 | On Loan: No      |
| Axon Enterprise, Inc.                          | Axon Enterprise, Inc.                             | CUSIP: 05464C101<br>LEI: 549300QP2IEEGFE16681 | Long             | EC               | CORP              | US        |    479513 | NS      | $260087851.20 | 1.89%             |  |  |  | No            |                  1 | On Loan: No      |
| BJ's Wholesale Club Holdings, Inc.             | BJ's Wholesale Club Holdings, Inc.                | CUSIP: 05550J101<br>LEI: 549300UCIWH1C93V0J03 | Long             | EC               | CORP              | US        |    154818 | NS      | $15294470.22  | 0.11%             |  |  |  | No            |                  1 | On Loan: No      |
| BWX Technologies, Inc.                         | BWX Technologies, Inc.                            | CUSIP: 05605H100<br>LEI: 549300NP85N265KWMS58 | Long             | EC               | CORP              | US        |    688050 | NS      | $141724539.00 | 1.03%             |  |  |  | No            |                  1 | On Loan: No      |
| Bio-Rad Laboratories, Inc.                     | Bio-Rad Laboratories, Inc., Class A               | CUSIP: 090572207<br>LEI: 549300ZC1GPV35XYDK53 | Long             | EC               | CORP              | US        |    278278 | NS      | $77483726.32  | 0.56%             |  |  |  | No            |                  1 | On Loan: No      |
| Bio-Techne Corp.                               | Bio-Techne Corp.                                  | CUSIP: 09073M104<br>LEI: 54930073RLKQ51TILZ35 | Long             | EC               | CORP              | US        |   1802620 | NS      | $106354580.00 | 0.77%             |  |  |  | No            |                  1 | On Loan: No      |
| Bloom Energy Corp.                             | Bloom Energy Corp., Class A                       | CUSIP: 093712107<br>LEI: 549300XB5J9BFW5JXV97 | Long             | EC               | CORP              | US        |    299276 | NS      | $46588294.92  | 0.34%             |  |  |  | No            |                  1 | On Loan: No      |
| Burlington Stores, Inc.                        | Burlington Stores, Inc.                           | CUSIP: 122017106<br>LEI: 5299003Z37DVGKKC1W09 | Long             | EC               | CORP              | US        |    792368 | NS      | $243153968.16 | 1.76%             |  |  |  | No            |                  1 | On Loan: No      |
| CBRE Group, Inc.                               | CBRE Group, Inc., Class A                         | CUSIP: 12504L109<br>LEI: 52990016II9MJ2OSWA10 | Long             | EC               | CORP              | US        |   1607075 | NS      | $237300694.50 | 1.72%             |  |  |  | No            |                  1 | On Loan: No      |
| Cadence Design Systems, Inc.                   | Cadence Design Systems, Inc.                      | CUSIP: 127387108<br>LEI: GCT7RXJOGLXPV0NXZY22 | Long             | EC               | CORP              | US        |    388339 | NS      | $117045374.60 | 0.85%             |  |  |  | No            |                  1 | On Loan: No      |
| Cameco Corp.                                   | Cameco Corp.                                      | CUSIP: 13321L108<br>LEI: N4BHALMXL3GMZKCUON55 | Long             | EC               | CORP              | CA        |   1700149 | NS      | $201297641.60 | 1.46%             |  |  |  | No            |                  1 | On Loan: No      |
| Carlyle Group, Inc. (The)                      | Carlyle Group, Inc. (The)                         | CUSIP: 14316J108<br>LEI: 529900NGGVF94UK6PG95 | Long             | EC               | CORP              | US        |   3660200 | NS      | $190293798.00 | 1.38%             |  |  |  | No            |                  1 | On Loan: No      |
| Carnival Corp.                                 | Carnival Corp.                                    | CUSIP: 143658300<br>LEI: F1OF2ZSX47CR0BCWA982 | Long             | EC               | CORP              | PA        |   4363355 | NS      | $137663850.25 | 1.00%             |  |  |  | No            |                  1 | On Loan: No      |
| Carvana Co.                                    | Carvana Co.                                       | CUSIP: 146869102<br>LEI: 5493003WEAK2PJ5WS063 | Long             | EC               | CORP              | US        |    567500 | NS      | $189635800.00 | 1.38%             |  |  |  | No            |                  1 | On Loan: No      |
| Cava Group, Inc.                               | Cava Group, Inc.                                  | CUSIP: 148929102<br>LEI: N/A                  | Long             | EC               | CORP              | US        |    343033 | NS      | $28289931.51  | 0.21%             |  |  |  | No            |                  1 | On Loan: No      |
| Celsius Holdings, Inc.                         | Celsius Holdings, Inc.                            | CUSIP: 15118V207<br>LEI: N/A                  | Long             | EC               | CORP              | US        |   2117494 | NS      | $113518853.34 | 0.82%             |  |  |  | No            |                  1 | On Loan: No      |
| Charles River Laboratories International, Inc. | Charles River Laboratories International, Inc.    | CUSIP: 159864107<br>LEI: 549300BSQ0R4UZ5KX287 | Long             | EC               | CORP              | US        |    430003 | NS      | $76751235.47  | 0.56%             |  |  |  | No            |                  1 | On Loan: No      |
| Cheniere Energy, Inc.                          | Cheniere Energy, Inc.                             | CUSIP: 16411R208<br>LEI: MIHC87W9WTYSYZWV1J40 | Long             | EC               | CORP              | US        |   1165873 | NS      | $274831242.29 | 1.99%             |  |  |  | No            |                  1 | On Loan: No      |
| Expand Energy Corp.                            | Expand Energy Corp.                               | CUSIP: 165167735<br>LEI: X2MT1W32SPAZ9WSKLE78 | Long             | EC               | CORP              | US        |   1211028 | NS      | $130694141.76 | 0.95%             |  |  |  | No            |                  1 | On Loan: No      |
| Ciena Corp.                                    | Ciena Corp.                                       | CUSIP: 171779309<br>LEI: W0CZ7N0GH8UIGXDM1H41 | Long             | EC               | CORP              | US        |    352236 | NS      | $122824693.20 | 0.89%             |  |  |  | No            |                  1 | On Loan: No      |
| Cloudflare, Inc.                               | Cloudflare, Inc., Class A                         | CUSIP: 18915M107<br>LEI: 5493007DY18BGNLDWU14 | Long             | EC               | CORP              | US        |   1031626 | NS      | $177635680.94 | 1.29%             |  |  |  | No            |                  1 | On Loan: No      |
| Coherent Corp.                                 | Coherent Corp.                                    | CUSIP: 19247G107<br>LEI: 549300O5C25A0MMHHU33 | Long             | EC               | CORP              | US        |    537551 | NS      | $139188080.43 | 1.01%             |  |  |  | No            |                  1 | On Loan: No      |
| Coupang, Inc.                                  | Coupang, Inc.                                     | CUSIP: 22266T109<br>LEI: 549300XR4L1D80AK4W76 | Long             | EC               | CORP              | US        |   6128836 | NS      | $116938190.88 | 0.85%             |  |  |  | No            |                  1 | On Loan: No      |
| Curtiss-Wright Corp.                           | Curtiss-Wright Corp.                              | CUSIP: 231561101<br>LEI: TEL51ETZWP7D0ZM4X325 | Long             | EC               | CORP              | US        |    243543 | NS      | $170560469.19 | 1.24%             |  |  |  | No            |                  1 | On Loan: No      |
| DT Midstream, Inc.                             | DT Midstream, Inc.                                | CUSIP: 23345M107<br>LEI: N/A                  | Long             | EC               | CORP              | US        |    251796 | NS      | $34959356.64  | 0.25%             |  |  |  | No            |                  1 | On Loan: No      |
| Datadog, Inc.                                  | Datadog, Inc., Class A                            | CUSIP: 23804L103<br>LEI: 549300F6JNO0KRPO1K63 | Long             | EC               | CORP              | US        |    966155 | NS      | $108170713.80 | 0.78%             |  |  |  | No            |                  1 | On Loan: No      |
| Dexcom, Inc.                                   | Dexcom, Inc.                                      | CUSIP: 252131107<br>LEI: 549300YSK3QDSFR5EU59 | Long             | EC               | CORP              | US        |   1068800 | NS      | $78481984.00  | 0.57%             |  |  |  | No            |                  1 | On Loan: No      |
| Donaldson Co., Inc.                            | Donaldson Co., Inc.                               | CUSIP: 257651109<br>LEI: OZE6KXY9QQPR8EJ8WL20 | Long             | EC               | CORP              | US        |    448234 | NS      | $41578185.84  | 0.30%             |  |  |  | No            |                  1 | On Loan: No      |
| DraftKings, Inc.                               | DraftKings, Inc., Class A                         | CUSIP: 26142V105<br>LEI: 2549006G33IUL6IVOD83 | Long             | EC               | CORP              | US        |   4931528 | NS      | $117567627.52 | 0.85%             |  |  |  | No            |                  1 | On Loan: No      |
| EMCOR Group, Inc.                              | EMCOR Group, Inc.                                 | CUSIP: 29084Q100<br>LEI: 529900X0SQJB2J7YDU43 | Long             | EC               | CORP              | US        |    219309 | NS      | $158915687.58 | 1.15%             |  |  |  | No            |                  1 | On Loan: No      |
| Exact Sciences Corp.                           | Exact Sciences Corp.                              | CUSIP: 30063P105<br>LEI: 549300VM3X1FYD4N9Z14 | Long             | EC               | CORP              | US        |    569990 | NS      | $58925566.20  | 0.43%             |  |  |  | No            |                  1 | On Loan: No      |
| Ferguson Enterprises, Inc.                     | Ferguson Enterprises, Inc.                        | CUSIP: 31488V107<br>LEI: 2138003JYQMRP3SLX189 | Long             | EC               | CORP              | US        |    154831 | NS      | $40373731.56  | 0.29%             |  |  |  | No            |                  1 | On Loan: No      |
| Fifth Third Bancorp                            | Fifth Third Bancorp                               | CUSIP: 316773100<br>LEI: THRNG6BD57P9QWTQLG42 | Long             | EC               | CORP              | US        |   1279953 | NS      | $63319274.91  | 0.46%             |  |  |  | No            |                  1 | On Loan: No      |
| Floor & Decor Holdings, Inc.                   | Floor & Decor Holdings, Inc., Class A             | CUSIP: 339750101<br>LEI: 549300M5FR3N688XGQ36 | Long             | EC               | CORP              | US        |    627275 | NS      | $43338429.75  | 0.31%             |  |  |  | No            |                  1 | On Loan: No      |
| GFL Environmental, Inc.                        | GFL Environmental, Inc.                           | CUSIP: 36168Q104<br>LEI: 894500E7NLBY9VZRT696 | Long             | EC               | CORP              | CA        |   2688819 | NS      | $118818911.61 | 0.86%             |  |  |  | No            |                  1 | On Loan: No      |
| Generac Holdings, Inc.                         | Generac Holdings, Inc.                            | CUSIP: 368736104<br>LEI: 529900S2H2AHJHSFFI84 | Long             | EC               | CORP              | US        |    251819 | NS      | $56752448.03  | 0.41%             |  |  |  | No            |                  1 | On Loan: No      |
| Guidewire Software, Inc.                       | Guidewire Software, Inc.                          | CUSIP: 40171V100<br>LEI: 549300WXSG0J8IXZCK32 | Long             | EC               | CORP              | US        |    875525 | NS      | $127231293.00 | 0.92%             |  |  |  | No            |                  1 | On Loan: No      |
| Hexcel Corp.                                   | Hexcel Corp.                                      | CUSIP: 428291108<br>LEI: S6Q7LW43WUBUHXY2QP69 | Long             | EC               | CORP              | US        |   1490033 | NS      | $138111158.77 | 1.00%             |  |  |  | No            |                  1 | On Loan: No      |
| Howmet Aerospace, Inc.                         | Howmet Aerospace, Inc.                            | CUSIP: 443201108<br>LEI: 549300HO5WFZUT5N2T22 | Long             | EC               | CORP              | US        |   2302899 | NS      | $604580074.47 | 4.38%             |  |  |  | No            |                  1 | On Loan: No      |
| Hubbell, Inc.                                  | Hubbell, Inc.                                     | CUSIP: 443510607<br>LEI: 54930088VDQ6840Y6597 | Long             | EC               | CORP              | US        |    239044 | NS      | $122302081.72 | 0.89%             |  |  |  | No            |                  1 | On Loan: No      |
| Huntington Ingalls Industries, Inc.            | Huntington Ingalls Industries, Inc.               | CUSIP: 446413106<br>LEI: 5TZLZ6WJTBVJ0QWBG121 | Long             | EC               | CORP              | US        |    145655 | NS      | $64746560.60  | 0.47%             |  |  |  | No            |                  1 | On Loan: No      |
| Hyatt Hotels Corp.                             | Hyatt Hotels Corp., Class A                       | CUSIP: 448579102<br>LEI: T27JQIMTYSH41TCD5186 | Long             | EC               | CORP              | US        |   1217409 | NS      | $196611553.50 | 1.43%             |  |  |  | No            |                  1 | On Loan: No      |
| Illumina, Inc.                                 | Illumina, Inc.                                    | CUSIP: 452327109<br>LEI: SQ95QG8SR5Q56LSNF682 | Long             | EC               | CORP              | US        |    425484 | NS      | $57210578.64  | 0.41%             |  |  |  | No            |                  1 | On Loan: No      |
| Ingersoll Rand, Inc.                           | Ingersoll Rand, Inc.                              | CUSIP: 45687V106<br>LEI: 5299004C02FMZCUOIR50 | Long             | EC               | CORP              | US        |    501575 | NS      | $47218270.50  | 0.34%             |  |  |  | No            |                  1 | On Loan: No      |
| Jabil, Inc.                                    | Jabil, Inc.                                       | CUSIP: 466313103<br>LEI: 5493000CGCQY2OQU7669 | Long             | EC               | CORP              | US        |    387575 | NS      | $102703499.25 | 0.74%             |  |  |  | No            |                  1 | On Loan: No      |
| LPL Financial Holdings, Inc.                   | LPL Financial Holdings, Inc.                      | CUSIP: 50212V100<br>LEI: 549300XROQ4Y8G2L7682 | Long             | EC               | CORP              | US        |    897884 | NS      | $269706395.92 | 1.96%             |  |  |  | No            |                  1 | On Loan: No      |
| ASM International NV                           | ASM International NV                              | CUSIP: N/A<br>LEI: 7245001I22ND6ZFHX623       | Long             | EC               | CORP              | NL        |    156566 | NS      | $132125847.00 | 0.96%             |  |  |  | No            |                  1 | On Loan: No      |
| Liberty Media Corp-Liberty Formula One         | Liberty Media Corp-Liberty Formula One, Class C   | CUSIP: 531229755<br>LEI: N/A                  | Long             | EC               | CORP              | US        |    511318 | NS      | $46831615.62  | 0.34%             |  |  |  | No            |                  1 | On Loan: No      |
| Lincoln Electric Holdings, Inc.                | Lincoln Electric Holdings, Inc.                   | CUSIP: 533900106<br>LEI: BIMGBY40SIN95O01BN93 | Long             | EC               | CORP              | US        |    169727 | NS      | $48720135.35  | 0.35%             |  |  |  | No            |                  1 | On Loan: No      |
| Live Nation Entertainment, Inc.                | Live Nation Entertainment, Inc.                   | CUSIP: 538034109<br>LEI: 5493007B9BM9ZXJINO78 | Long             | EC               | CORP              | US        |   2156753 | NS      | $349695931.42 | 2.54%             |  |  |  | No            |                  1 | On Loan: No      |
| MFS Institutional Money Market Portfolio       | MFS Institutional Money Market Portfolio, Class A | CUSIP: 55291X109<br>LEI: 5L2W638H85N8T1136O07 | Long             | STIV             | RF                | US        | 149962545 | NS      | $149977541.54 | 1.09%             |  |  |  | No            |                  1 | On Loan: No      |
| MACOM Technology Solutions Holdings, Inc.      | MACOM Technology Solutions Holdings, Inc.         | CUSIP: 55405Y100<br>LEI: N/A                  | Long             | EC               | CORP              | US        |    200132 | NS      | $49656751.84  | 0.36%             |  |  |  | No            |                  1 | On Loan: No      |
| Masimo Corp.                                   | Masimo Corp.                                      | CUSIP: 574795100<br>LEI: 549300Q4A8JK0PIYCU29 | Long             | EC               | CORP              | US        |   1643450 | NS      | $288178957.50 | 2.09%             |  |  |  | No            |                  1 | On Loan: No      |
| Medline, Inc.                                  | Medline, Inc., Class A                            | CUSIP: 58507V107<br>LEI: 984500FAN6J1P8566D43 | Long             | EC               | CORP              | US        |   1798467 | NS      | $85445167.17  | 0.62%             |  |  |  | No            |                  1 | On Loan: No      |
| Modine Manufacturing Co.                       | Modine Manufacturing Co.                          | CUSIP: 607828100<br>LEI: Z35SZFYJR8GZZRSIUU09 | Long             | EC               | CORP              | US        |    120512 | NS      | $27386352.00  | 0.20%             |  |  |  | No            |                  1 | On Loan: No      |
| MongoDB, Inc.                                  | MongoDB, Inc.                                     | CUSIP: 60937P106<br>LEI: 549300TPTG69WKWE1Z37 | Long             | EC               | CORP              | US        |    189971 | NS      | $62399774.37  | 0.45%             |  |  |  | No            |                  1 | On Loan: No      |
| Monolithic Power Systems, Inc.                 | Monolithic Power Systems, Inc.                    | CUSIP: 609839105<br>LEI: 529900TB7O85LSZ1XU31 | Long             | EC               | CORP              | US        |    385713 | NS      | $440769673.62 | 3.20%             |  |  |  | No            |                  1 | On Loan: No      |
| Nasdaq, Inc.                                   | Nasdaq, Inc.                                      | CUSIP: 631103108<br>LEI: 549300L8X1Q78ERXFD06 | Long             | EC               | CORP              | US        |   2611865 | NS      | $228747136.70 | 1.66%             |  |  |  | No            |                  1 | On Loan: No      |
| Natera, Inc.                                   | Natera, Inc.                                      | CUSIP: 632307104<br>LEI: 529900CQ3OZ0A0VYVU59 | Long             | EC               | CORP              | US        |   1417224 | NS      | $294839280.96 | 2.14%             |  |  |  | No            |                  1 | On Loan: No      |
| Nordson Corp.                                  | Nordson Corp.                                     | CUSIP: 655663102<br>LEI: 14OS6Q5N55N95WM84M53 | Long             | EC               | CORP              | US        |    166924 | NS      | $48982178.56  | 0.36%             |  |  |  | No            |                  1 | On Loan: No      |
| O'Reilly Automotive, Inc.                      | O'Reilly Automotive, Inc.                         | CUSIP: 67103H107<br>LEI: 549300K2RLMQL149Q332 | Long             | EC               | CORP              | US        |   1985830 | NS      | $186429720.40 | 1.35%             |  |  |  | No            |                  1 | On Loan: No      |
| Okta, Inc.                                     | Okta, Inc.                                        | CUSIP: 679295105<br>LEI: 549300N8J06I8MRHU620 | Long             | EC               | CORP              | US        |   1658649 | NS      | $120252052.50 | 0.87%             |  |  |  | No            |                  1 | On Loan: No      |
| Ovintiv, Inc.                                  | Ovintiv, Inc.                                     | CUSIP: 69047Q102<br>LEI: 2549003MEX7YMKLGI239 | Long             | EC               | CORP              | US        |    407676 | NS      | $20624328.84  | 0.15%             |  |  |  | No            |                  1 | On Loan: No      |
| Performance Food Group Co.                     | Performance Food Group Co.                        | CUSIP: 71377A103<br>LEI: 549300EUK8GR9IT1YK57 | Long             | EC               | CORP              | US        |   1078547 | NS      | $104683771.82 | 0.76%             |  |  |  | No            |                  1 | On Loan: No      |
| Quanta Services, Inc.                          | Quanta Services, Inc.                             | CUSIP: 74762E102<br>LEI: SHVRXXEACT60MMH07S24 | Long             | EC               | CORP              | US        |    667580 | NS      | $375900946.40 | 2.73%             |  |  |  | No            |                  1 | On Loan: No      |
| RBC Bearings, Inc.                             | RBC Bearings, Inc.                                | CUSIP: 75524B104<br>LEI: N/A                  | Long             | EC               | CORP              | US        |    184426 | NS      | $106214621.92 | 0.77%             |  |  |  | No            |                  1 | On Loan: No      |
| Repligen Corp.                                 | Repligen Corp.                                    | CUSIP: 759916109<br>LEI: 54930006QJ0T5AUO1E71 | Long             | EC               | CORP              | US        |    866360 | NS      | $111526522.80 | 0.81%             |  |  |  | No            |                  1 | On Loan: No      |
| Robinhood Markets, Inc.                        | Robinhood Markets, Inc., Class A                  | CUSIP: 770700102<br>LEI: 213800FS5AO3YWIE6F63 | Long             | EC               | CORP              | US        |    723758 | NS      | $54897044.30  | 0.40%             |  |  |  | No            |                  1 | On Loan: No      |
| ROBLOX Corp.                                   | ROBLOX Corp., Class A                             | CUSIP: 771049103<br>LEI: 529900ANZDBDFU91SO19 | Long             | EC               | CORP              | US        |   3188993 | NS      | $218956259.38 | 1.59%             |  |  |  | No            |                  1 | On Loan: No      |
| TKO Group Holdings, Inc.                       | TKO Group Holdings, Inc.                          | CUSIP: 87256C101<br>LEI: N/A                  | Long             | EC               | CORP              | US        |   1430847 | NS      | $320323717.89 | 2.32%             |  |  |  | No            |                  1 | On Loan: No      |
| Take-Two Interactive Software, Inc.            | Take-Two Interactive Software, Inc.               | CUSIP: 874054109<br>LEI: BOMSTHHJK882EWYX3334 | Long             | EC               | CORP              | US        |   1886157 | NS      | $398884482.36 | 2.89%             |  |  |  | No            |                  1 | On Loan: No      |
| Tapestry, Inc.                                 | Tapestry, Inc.                                    | CUSIP: 876030107<br>LEI: 549300LJNVY5SW3VTN33 | Long             | EC               | CORP              | US        |   1111670 | NS      | $172831334.90 | 1.25%             |  |  |  | No            |                  1 | On Loan: No      |
| TopBuild Corp.                                 | TopBuild Corp.                                    | CUSIP: 89055F103<br>LEI: 5493007YSKHOL4RWII46 | Long             | EC               | CORP              | US        |     63348 | NS      | $28398908.40  | 0.21%             |  |  |  | No            |                  1 | On Loan: No      |
| Tractor Supply Co.                             | Tractor Supply Co.                                | CUSIP: 892356106<br>LEI: 549300OJ9VZHZRO6I137 | Long             | EC               | CORP              | US        |    613381 | NS      | $31797671.04  | 0.23%             |  |  |  | No            |                  1 | On Loan: No      |
| TransUnion                                     | TransUnion                                        | CUSIP: 89400J107<br>LEI: 549300ZS772LUNUMRB03 | Long             | EC               | CORP              | US        |   1244967 | NS      | $97792157.85  | 0.71%             |  |  |  | No            |                  1 | On Loan: No      |
| Trimble, Inc.                                  | Trimble, Inc.                                     | CUSIP: 896239100<br>LEI: 549300E2MI7NSZFQWS19 | Long             | EC               | CORP              | US        |   2398115 | NS      | $160361950.05 | 1.16%             |  |  |  | No            |                  1 | On Loan: No      |
| VF Corp.                                       | VF Corp.                                          | CUSIP: 918204108<br>LEI: CWAJJ9DJ5Z7P057HV541 | Long             | EC               | CORP              | US        |   2998396 | NS      | $58228850.32  | 0.42%             |  |  |  | No            |                  1 | On Loan: No      |
| Vertiv Holdings Co.                            | Vertiv Holdings Co., Class A                      | CUSIP: 92537N108<br>LEI: 549300KTTIRAOGXCRV69 | Long             | EC               | CORP              | US        |    521169 | NS      | $132840766.41 | 0.96%             |  |  |  | No            |                  1 | On Loan: No      |
| Vistra Corp.                                   | Vistra Corp.                                      | CUSIP: 92840M102<br>LEI: 549300KP43CPCUJOOG15 | Long             | EC               | CORP              | US        |   1615099 | NS      | $280849565.11 | 2.04%             |  |  |  | No            |                  1 | On Loan: No      |
| Vulcan Materials Co.                           | Vulcan Materials Co.                              | CUSIP: 929160109<br>LEI: 549300Q8LSNHAVWBNI21 | Long             | EC               | CORP              | US        |    729132 | NS      | $226030920.00 | 1.64%             |  |  |  | No            |                  1 | On Loan: No      |
| Waters Corp.                                   | Waters Corp.                                      | CUSIP: 941848103<br>LEI: 5T547R1474YC9HOD8Q74 | Long             | EC               | CORP              | US        |    375362 | NS      | $119883115.56 | 0.87%             |  |  |  | No            |                  1 | On Loan: No      |
| Wingstop, Inc.                                 | Wingstop, Inc.                                    | CUSIP: 974155103<br>LEI: 549300SSH3F8HPIM3Q47 | Long             | EC               | CORP              | US        |    909649 | NS      | $236063011.99 | 1.71%             |  |  |  | No            |                  1 | On Loan: No      |
| Woodward, Inc.                                 | Woodward, Inc.                                    | CUSIP: 980745103<br>LEI: YPYKXXTR8TFDH54ZMB45 | Long             | EC               | CORP              | US        |    229686 | NS      | $88833357.36  | 0.64%             |  |  |  | No            |                  1 | On Loan: No      |
| N/A                                            | Constellation Software, Inc.                      | CUSIP: 21037X134<br>LEI: N/A                  | N/A              | DO               |  | CA        |    115391 | NS      | $0.00         | 0.00%             |  |  |  | No            |                  2 | On Loan: No      |
| Alamos Gold, Inc.                              | Alamos Gold, Inc., Class A                        | CUSIP: 011532108<br>LEI: 894500GIHFJZW7YS9660 | Long             | EC               | CORP              | CA        |    275236 | NS      | $14917486.51  | 0.11%             |  |  |  | No            |                  1 | On Loan: No      |
| EURO                                           | EURO                                              | CUSIP: N/A<br>LEI: N/A                        | Long             | STIV             |  | XX        |       212 | OU      | $250.75       | 0.00%             |  |  |  | No            |                  1 | On Loan: No      |
| Amer Sports, Inc.                              | Amer Sports, Inc.                                 | CUSIP: N/A<br>LEI: 391200YCSWTRD1J21867       | Long             | EC               | CORP              | KY        |   1986832 | NS      | $75459879.36  | 0.55%             |  |  |  | No            |                  1 | On Loan: No      |
| Grab Holdings Ltd.                             | Grab Holdings Ltd., Class A                       | CUSIP: N/A<br>LEI: 549300N4VQX83VPJF439       | Long             | EC               | CORP              | KY        |   7278929 | NS      | $30717080.38  | 0.22%             |  |  |  | No            |                  1 | On Loan: No      |
| Seagate Technology Holdings plc                | Seagate Technology Holdings plc                   | CUSIP: N/A<br>LEI: 635400RUXIFEZSRU8X70       | Long             | EC               | CORP              | IE        |    272280 | NS      | $111046675.20 | 0.81%             |  |  |  | No            |                  1 | On Loan: No      |
| STERIS plc                                     | STERIS plc                                        | CUSIP: N/A<br>LEI: N/A                        | Long             | EC               | CORP              | IE        |    660880 | NS      | $166773068.00 | 1.21%             |  |  |  | No            |                  1 | On Loan: No      |
| TechnipFMC plc                                 | TechnipFMC plc                                    | CUSIP: N/A<br>LEI: 549300D5I93QWCJTCK36       | Long             | EC               | CORP              | GB        |    563951 | NS      | $37395590.81  | 0.27%             |  |  |  | No            |                  1 | On Loan: No      |
| Viking Holdings Ltd.                           | Viking Holdings Ltd.                              | CUSIP: N/A<br>LEI: 52990032GOPN7BVQMN13       | Long             | EC               | CORP              | BM        |   2668781 | NS      | $208218293.62 | 1.51%             |  |  |  | No            |                  1 | On Loan: No      |
| British Pound                                  | British Pound                                     | CUSIP: N/A<br>LEI: N/A                        | Long             | STIV             |  | GB        |         2 | OU      | $3.30         | 0.00%             |  |  |  | No            |                  1 | On Loan: No      |
| Sportradar Group AG                            | Sportradar Group AG, Class A                      | CUSIP: N/A<br>LEI: 549300H1P33YOAT7Z533       | Long             | EC               | CORP              | CH        |   3643288 | NS      | $66526438.88  | 0.48%             |  |  |  | No            |                  1 | On Loan: No      |
| Spotify Technology SA                          | Spotify Technology SA                             | CUSIP: N/A<br>LEI: 549300B4X0JHWV0DTD60       | Long             | EC               | CORP              | LU        |    130759 | NS      | $67333039.46  | 0.49%             |  |  |  | No            |                  1 | On Loan: No      |
| Royal Caribbean Cruises Ltd.                   | Royal Caribbean Cruises Ltd.                      | CUSIP: N/A<br>LEI: K2NEH8QNVW44JIWK7Z55       | Long             | EC               | CORP              | LR        |    415180 | NS      | $129104372.80 | 0.94%             |  |  |  | No            |                  1 | On Loan: No      |

### Signature

**Date Signed:** 2026-03-30

**Name of Applicant:** MFS Series Trust IV

**Signature:** James Byrne

**Name of Signer:** James Byrne

**Title:** Assistant Treasurer