# EDGAR Filing Document

**Accession Number:** 0000742212
**File Stem:** 0001410368-26-016303
**Filing Date:** 2026-2
**Character Count:** 21242
**Document Hash:** db11aef152b541fffe0bc69051184e0d
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001410368-26-016303.hdr.sgml**: 20260223

**ACCESSION NUMBER**: 0001410368-26-016303

**CONFORMED SUBMISSION TYPE**: NPORT-P

**PUBLIC DOCUMENT COUNT**: 1

**CONFORMED PERIOD OF REPORT**: 20251231

**FILED AS OF DATE**: 20260223

**DATE AS OF CHANGE**: 20260223

**PERIOD START**: 20251231

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** NORTHWESTERN MUTUAL SERIES FUND INC
- **CENTRAL INDEX KEY:** 0000742212

**ORGANIZATION NAME:**
- **EIN:** 391603401
- **STATE OF INCORPORATION:** MD
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** NPORT-P
- **SEC ACT:** 1940 Act
- **SEC FILE NUMBER:** 811-03990
- **FILM NUMBER:** 26664743

**BUSINESS ADDRESS:**
- **STREET 1:** 720 E WISCONSIN AVE
- **CITY:** MILWAUKEE
- **STATE:** WI
- **ZIP:** 53202
- **BUSINESS PHONE:** 4142992508

**MAIL ADDRESS:**
- **STREET 1:** 720 EAST WISCONSIN AVE
- **CITY:** MILWAUKEE
- **STATE:** WI
- **ZIP:** 53202

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** NORTHWESTERN MUTUAL VARIABLE LIFE SERIES FUND INC
- **DATE OF NAME CHANGE:** 19940830

## Series and Classes Contracts Data

### Large Company Value Portfolio (Series ID: S000018227)

| Class ID   | Class Name                    | Ticker Symbol   |
|:---|:---|:---|
| C000050275 | Large Company Value Portfolio |  |

## Form NPORT-P: Monthly Portfolio Investments Report

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

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

- **a. Name of Registrant:** NORTHWESTERN MUTUAL SERIES FUND INC

- **b. Investment Company Act file number:** 811-03990

- **c. CIK number of Registrant:** 0000742212

- **d. LEI of Registrant:** 549300T1UBX7MDSNZA55

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

  - **Street Address 1:** 720 E WISCONSIN AVE

  - **City:** MILWAUKEE

  - **State:** WI

  - **Foreign country:** US

  - **Zip / Postal Code:** 53202

  - **Telephone number:** 414-271-1444

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

- **a. Name of Series:** Large Company Value Portfolio

- **b. EDGAR series identifier (if any):** S000018227

- **c. LEI of Series:** 6UWSQM9V60QIAUKWH425

**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:** $171652520.34

**Total Liabilities:** $161796.71

**Net Assets:** $171490723.63

**Cash Not Reported:** $2788163.16

**Monthly Return Information**

| Class               | Month 1 Return (%)   | Month 2 Return (%)   | Month 3 Return (%)   |
|:---|:---|:---|:---|
| Class ID C000050275 | -1.05%               | 4.24%                | 0.23%                |

**Monthly Gains & Losses**

| Period   | Net Realized Gain/Loss   | Net Unrealized Appreciation/Depreciation   |
|:---|:---|:---|
| Month 1  | $2175880.15              | $-4328872.26                               |
| Month 2  | $782762.27               | $5899250.07                                |
| Month 3  | $1671365.81              | $-1312564.72                               |

**Designated Index Information**

- **Index Name:** Russell 1000 Value Index

- **Index Identifier:** RLV

### 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   |
|:---|:---|:---|:---|:---|:---|:---|---:|:---|:---|:---|:---|:---|:---|:---|---:|:---|
| Alphabet Inc                        | Alphabet Inc                     | CUSIP: 02079K305<br>LEI: 5493006MHB84DD0ZWV18 | Long             | EC               | CORP              | US        |     13752 | NS      | $4304376.00   | 2.51%             |  |  |  | No            |                  1 | On Loan: No      |
| American Tower Corp                 | American Tower Corp              | CUSIP: 03027X100<br>LEI: 5493006ORUSIL88JOE18 | Long             | EC               |  | US        |     18202 | NS      | $3195725.14   | 1.86%             |  |  |  | No            |                  1 | On Loan: No      |
| Analog Devices Inc                  | Analog Devices Inc               | CUSIP: 032654105<br>LEI: GYVOE5EZ4GDAVTU4CQ61 | Long             | EC               | CORP              | US        |     12428 | NS      | $3370473.60   | 1.97%             |  |  |  | No            |                  1 | On Loan: No      |
| Atmos Energy Corp                   | Atmos Energy Corp                | CUSIP: 049560105<br>LEI: QVLWEGTD2S8GJMO8D383 | Long             | EC               | CORP              | US        |     17778 | NS      | $2980126.14   | 1.74%             |  |  |  | No            |                  1 | On Loan: No      |
| Baker Hughes Co                     | Baker Hughes Co                  | CUSIP: 05722G100<br>LEI: N/A                  | Long             | EC               | CORP              | US        |     57897 | NS      | $2636629.38   | 1.54%             |  |  |  | No            |                  1 | On Loan: No      |
| Bank of New York Mellon Corp/The    | Bank of New York Mellon Corp/The | CUSIP: 064058100<br>LEI: WFLLPEPC7FZXENRZV188 | Long             | EC               | CORP              | US        |     17266 | NS      | $2004409.94   | 1.17%             |  |  |  | No            |                  1 | On Loan: No      |
| Becton Dickinson & Co               | Becton Dickinson & Co            | CUSIP: 075887109<br>LEI: ICE2EP6D98PQUILVRZ91 | Long             | EC               | CORP              | US        |     26555 | NS      | $5153528.85   | 3.01%             |  |  |  | No            |                  1 | On Loan: No      |
| Berkshire Hathaway Inc              | Berkshire Hathaway Inc           | CUSIP: 084670702<br>LEI: 5493000C01ZX7D35SD85 | Long             | EC               | CORP              | US        |     10796 | NS      | $5426609.40   | 3.16%             |  |  |  | No            |                  1 | On Loan: No      |
| Blackrock Inc                       | Blackrock Inc                    | CUSIP: 09290D101<br>LEI: 529900VBK42Y5HHRMD23 | Long             | EC               | CORP              | US        |      4875 | NS      | $5217907.50   | 3.04%             |  |  |  | No            |                  1 | On Loan: No      |
| Chevron Corp                        | Chevron Corp                     | CUSIP: 166764100<br>LEI: N/A                  | Long             | EC               | CORP              | US        |     28701 | NS      | $4374319.41   | 2.55%             |  |  |  | No            |                  1 | On Loan: No      |
| Cisco Systems Inc                   | Cisco Systems Inc                | CUSIP: 17275R102<br>LEI: 549300LKFJ962MZ46593 | Long             | EC               | CORP              | US        |     40415 | NS      | $3113167.45   | 1.82%             |  |  |  | No            |                  1 | On Loan: No      |
| Commerce Bancshares Inc/MO          | Commerce Bancshares Inc/MO       | CUSIP: 200525103<br>LEI: N/A                  | Long             | EC               | CORP              | US        |      3282 | NS      | $171779.88    | 0.10%             |  |  |  | No            |                  1 | On Loan: No      |
| Cummins Inc                         | Cummins Inc                      | CUSIP: 231021106<br>LEI: ZUNI8PYC725B6H8JU438 | Long             | EC               | CORP              | US        |      3308 | NS      | $1688568.60   | 0.98%             |  |  |  | No            |                  1 | On Loan: No      |
| Bank of America NA                  | PURCHASED USD / SOLD GBP         | CUSIP: 000000000<br>LEI: B4TYDEB6GKMZO031MB27 | N/A              | DFE              |  | US        |         1 | NC      | $-29509.07    | -0.02%            |  |  |  | No            |                  2 | On Loan: No      |
| Morgan Stanley Capital Services LLC | PURCHASED USD / SOLD CHF         | CUSIP: 000000000<br>LEI: I7331LVCZKQKX5T7XV54 | N/A              | DFE              |  | US        |         1 | NC      | $-4029.16     | -0.00%            |  |  |  | No            |                  2 | On Loan: No      |
| Morgan Stanley Capital Services LLC | PURCHASED USD / SOLD EUR         | CUSIP: 000000000<br>LEI: I7331LVCZKQKX5T7XV54 | N/A              | DFE              |  | US        |         1 | NC      | $4832.72      | 0.00%             |  |  |  | No            |                  2 | On Loan: No      |
| Goldman Sachs International         | PURCHASED USD / SOLD GBP         | CUSIP: 000000000<br>LEI: W22LROWP2IHZNBB6K528 | N/A              | DFE              |  | US        |         1 | NC      | $-554.31      | -0.00%            |  |  |  | No            |                  2 | On Loan: No      |
| Morgan Stanley Capital Services LLC | PURCHASED EUR / SOLD USD         | CUSIP: 000000000<br>LEI: I7331LVCZKQKX5T7XV54 | N/A              | DFE              |  | XX        |         1 | NC      | $-45.77       | -0.00%            |  |  |  | No            |                  2 | On Loan: No      |
| Morgan Stanley Capital Services LLC | PURCHASED USD / SOLD EUR         | CUSIP: 000000000<br>LEI: I7331LVCZKQKX5T7XV54 | N/A              | DFE              |  | US        |         1 | NC      | $112.46       | 0.00%             |  |  |  | No            |                  2 | On Loan: No      |
| Morgan Stanley Capital Services LLC | PURCHASED USD / SOLD CHF         | CUSIP: 000000000<br>LEI: I7331LVCZKQKX5T7XV54 | N/A              | DFE              |  | US        |         1 | NC      | $275.26       | 0.00%             |  |  |  | No            |                  2 | On Loan: No      |
| Duke Energy Corp                    | Duke Energy Corp                 | CUSIP: 26441C204<br>LEI: I1BZKREC126H0VB1BL91 | Long             | EC               | CORP              | US        |     48999 | NS      | $5743172.79   | 3.35%             |  |  |  | No            |                  1 | On Loan: No      |
| Enterprise Products Partners LP     | Enterprise Products Partners LP  | CUSIP: 293792107<br>LEI: K4CDIF4M54DJZ6TB4Q48 | Long             | EC               | CORP              | US        |    167301 | NS      | $5363670.06   | 3.13%             |  |  |  | No            |                  1 | On Loan: No      |
| F5 Inc                              | F5 Inc                           | CUSIP: 315616102<br>LEI: 54930015FPK9KT966303 | Long             | EC               | CORP              | US        |     10466 | NS      | $2671551.16   | 1.56%             |  |  |  | No            |                  1 | On Loan: No      |
| IQVIA Holdings Inc                  | IQVIA Holdings Inc               | CUSIP: 46266C105<br>LEI: 549300W3R20NM4KQPH86 | Long             | EC               | CORP              | US        |     11472 | NS      | $2585903.52   | 1.51%             |  |  |  | No            |                  1 | On Loan: No      |
| JPMorgan Chase & Co                 | JPMorgan Chase & Co              | CUSIP: 46625H100<br>LEI: 8I5DZWZKVSZI1NUHU748 | Long             | EC               | CORP              | US        |     18367 | NS      | $5918214.74   | 3.45%             |  |  |  | No            |                  1 | On Loan: No      |
| Johnson & Johnson                   | Johnson & Johnson                | CUSIP: 478160104<br>LEI: 549300G0CFPGEF6X2043 | Long             | EC               | CORP              | US        |     26970 | NS      | $5581441.50   | 3.25%             |  |  |  | No            |                  1 | On Loan: No      |
| Kenvue Inc                          | Kenvue Inc                       | CUSIP: 49177J102<br>LEI: 5493008HSF8L4M2LIJ82 | Long             | EC               | CORP              | US        |    198355 | NS      | $3421623.75   | 2.00%             |  |  |  | No            |                  1 | On Loan: No      |
| Kimberly-Clark Corp                 | Kimberly-Clark Corp              | CUSIP: 494368103<br>LEI: MP3J6QPYPGN75NVW2S34 | Long             | EC               | CORP              | US        |     26129 | NS      | $2636154.81   | 1.54%             |  |  |  | No            |                  1 | On Loan: No      |
| Estee Lauder Cos Inc/The            | Estee Lauder Cos Inc/The         | CUSIP: 518439104<br>LEI: 549300VFZ8XJ9NUPU221 | Long             | EC               | CORP              | US        |     15705 | NS      | $1644627.60   | 0.96%             |  |  |  | No            |                  1 | On Loan: No      |
| Marsh & McLennan Cos Inc            | Marsh & McLennan Cos Inc         | CUSIP: 571748102<br>LEI: 549300XMP3KDCKJXIU47 | Long             | EC               | CORP              | US        |     32351 | NS      | $6001757.52   | 3.50%             |  |  |  | No            |                  1 | On Loan: No      |
| Siemens AG                          | Siemens AG                       | CUSIP: 000000000<br>LEI: W38RGI023J3WT1HWRP32 | Long             | EC               | CORP              | DE        |      8108 | NS      | $2277018.62   | 1.33%             |  |  |  | No            |                  2 | On Loan: No      |
| Mondelez International Inc          | Mondelez International Inc       | CUSIP: 609207105<br>LEI: 549300DV9GIB88LZ5P30 | Long             | EC               | CORP              | US        |     83064 | NS      | $4471335.12   | 2.61%             |  |  |  | No            |                  1 | On Loan: No      |
| Norfolk Southern Corp               | Norfolk Southern Corp            | CUSIP: 655844108<br>LEI: 54930036C8MWP850MI84 | Long             | EC               | CORP              | US        |     15203 | NS      | $4389410.16   | 2.56%             |  |  |  | No            |                  1 | On Loan: No      |
| PPG Industries Inc                  | PPG Industries Inc               | CUSIP: 693506107<br>LEI: 549300BKPEP01R3V6C59 | Long             | EC               | CORP              | US        |     26265 | NS      | $2691111.90   | 1.57%             |  |  |  | No            |                  1 | On Loan: No      |
| PACCAR Inc                          | PACCAR Inc                       | CUSIP: 693718108<br>LEI: KDTEY8BWE486IKZ3CC07 | Long             | EC               | CORP              | US        |     27407 | NS      | $3001340.57   | 1.75%             |  |  |  | No            |                  1 | On Loan: No      |
| Packaging Corp of America           | Packaging Corp of America        | CUSIP: 695156109<br>LEI: 549300XZP8MFZFY8TJ84 | Long             | EC               | CORP              | US        |     20136 | NS      | $4152647.28   | 2.42%             |  |  |  | No            |                  1 | On Loan: No      |
| Roche Holding AG                    | Roche Holding AG                 | CUSIP: 000000000<br>LEI: 549300U41AUUVOAAOB37 | Long             | EC               | CORP              | CH        |      5788 | NS      | $2391995.56   | 1.39%             |  |  |  | No            |                  2 | On Loan: No      |
| PepsiCo Inc                         | PepsiCo Inc                      | CUSIP: 713448108<br>LEI: FJSUNZKFNQ5YPJ5OT455 | Long             | EC               | CORP              | US        |     36049 | NS      | $5173752.48   | 3.02%             |  |  |  | No            |                  1 | On Loan: No      |
| PulteGroup Inc                      | PulteGroup Inc                   | CUSIP: 745867101<br>LEI: N/A                  | Long             | EC               | CORP              | US        |     18766 | NS      | $2200501.16   | 1.28%             |  |  |  | No            |                  1 | On Loan: No      |
| QUALCOMM Inc                        | QUALCOMM Inc                     | CUSIP: 747525103<br>LEI: H1J8DDZKZP6H7RWC0H53 | Long             | EC               | CORP              | US        |     14921 | NS      | $2552237.05   | 1.49%             |  |  |  | No            |                  1 | On Loan: No      |
| RTX Corp                            | RTX Corp                         | CUSIP: 75513E101<br>LEI: I07WOS4YJ0N7YRFE7309 | Long             | EC               | CORP              | US        |     15083 | NS      | $2766222.20   | 1.61%             |  |  |  | No            |                  1 | On Loan: No      |
| Reinsurance Group of America Inc    | Reinsurance Group of America Inc | CUSIP: 759351604<br>LEI: LORM1GNEU1DKEW527V90 | Long             | EC               | CORP              | US        |     20654 | NS      | $4202262.84   | 2.45%             |  |  |  | No            |                  1 | On Loan: No      |
| Salesforce Inc                      | Salesforce Inc                   | CUSIP: 79466L302<br>LEI: RCGZFPDMRW58VJ54VR07 | Long             | EC               | CORP              | US        |      9736 | NS      | $2579163.76   | 1.50%             |  |  |  | No            |                  1 | On Loan: No      |
| Henry Schein Inc                    | Henry Schein Inc                 | CUSIP: 806407102<br>LEI: VGO3WGL8H45T73F4RR92 | Long             | EC               | CORP              | US        |     32591 | NS      | $2463227.78   | 1.44%             |  |  |  | No            |                  1 | On Loan: No      |
| Charles Schwab Corp/The             | Charles Schwab Corp/The          | CUSIP: 808513105<br>LEI: 549300VSGCJ7E698NM85 | Long             | EC               | CORP              | US        |     42416 | NS      | $4237782.56   | 2.47%             |  |  |  | No            |                  1 | On Loan: No      |
| A O Smith Corp                      | A O Smith Corp                   | CUSIP: 831865209<br>LEI: 549300XG4US7UJNECY36 | Long             | EC               | CORP              | US        |     48359 | NS      | $3234249.92   | 1.89%             |  |  |  | No            |                  1 | On Loan: No      |
| Sysco Corp                          | Sysco Corp                       | CUSIP: 871829107<br>LEI: 5RGWIFLMGH3YS7KWI652 | Long             | EC               | CORP              | US        |     40866 | NS      | $3011415.54   | 1.76%             |  |  |  | No            |                  1 | On Loan: No      |
| Truist Financial Corp               | Truist Financial Corp            | CUSIP: 89832Q109<br>LEI: 549300DRQQI75D2JP341 | Long             | EC               | CORP              | US        |    119220 | NS      | $5866816.20   | 3.42%             |  |  |  | No            |                  1 | On Loan: No      |
| Unilever PLC                        | Unilever PLC                     | CUSIP: 904767803<br>LEI: 549300MKFYEKVRWML317 | Long             | EC               | CORP              | GB        |     83912 | NS      | $5487844.80   | 3.20%             |  |  |  | No            |                  1 | On Loan: No      |
| UnitedHealth Group Inc              | UnitedHealth Group Inc           | CUSIP: 91324P102<br>LEI: 549300GHBMY8T5GXDE41 | Long             | EC               | CORP              | US        |      6706 | NS      | $2213717.66   | 1.29%             |  |  |  | No            |                  1 | On Loan: No      |
| Verizon Communications Inc          | Verizon Communications Inc       | CUSIP: 92343V104<br>LEI: 2S72QS2UO2OESLG6Y829 | Long             | EC               | CORP              | US        |     63053 | NS      | $2568148.69   | 1.50%             |  |  |  | No            |                  1 | On Loan: No      |
| Zimmer Biomet Holdings Inc          | Zimmer Biomet Holdings Inc       | CUSIP: 98956P102<br>LEI: 2P2YLDVPES3BXQ1FRB91 | Long             | EC               | CORP              | US        |     31619 | NS      | $2843180.48   | 1.66%             |  |  |  | No            |                  1 | On Loan: No      |
| TotalEnergies SE                    | TotalEnergies SE                 | CUSIP: 000000000<br>LEI: 529900S21EQ1BO4ESM68 | Long             | EC               | CORP              | FR        |     33954 | NS      | $2221270.68   | 1.30%             |  |  |  | No            |                  1 | On Loan: No      |
| Medtronic PLC                       | Medtronic PLC                    | CUSIP: 000000000<br>LEI: 549300GX3ZBSQWUXY261 | Long             | EC               | CORP              | IE        |     42352 | NS      | $4068333.12   | 2.37%             |  |  |  | No            |                  1 | On Loan: No      |
| Amrize Ltd                          | Amrize Ltd                       | CUSIP: 000000000<br>LEI: 529900SLCCO6K43P8146 | Long             | EC               | CORP              | CH        |     42185 | NS      | $2281364.80   | 1.33%             |  |  |  | No            |                  1 | On Loan: No      |

### Signature

**Date Signed:** 2026-01-20

**Name of Applicant:** NORTHWESTERN MUTUAL SERIES FUND INC

**Signature:** Linda Wisniewski

**Name of Signer:** Linda Wisniewski

**Title:** Controller and Chief Accounting Officer