# EDGAR Filing Document

**Accession Number:** 0000742212
**File Stem:** 0001752724-23-042287
**Filing Date:** 2023-2
**Character Count:** 37824
**Document Hash:** c94fc13c0896af29aeea0a49727e8de7
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001752724-23-042287.hdr.sgml**: 20230227

**ACCESSION NUMBER**: 0001752724-23-042287

**CONFORMED SUBMISSION TYPE**: NPORT-P

**PUBLIC DOCUMENT COUNT**: 1

**CONFORMED PERIOD OF REPORT**: 20221231

**FILED AS OF DATE**: 20230227

**DATE AS OF CHANGE**: 20230227

**PERIOD START**: 20221231

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** NORTHWESTERN MUTUAL SERIES FUND INC
- **CENTRAL INDEX KEY:** 0000742212
- **IRS NUMBER:** 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:** 23672539

**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

### Mid Cap Growth Stock Portfolio (Series ID: S000000050)

| Class ID   | Class Name                     | Ticker Symbol   |
|:---|:---|:---|
| C000000085 | Mid Cap Growth Stock 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:** Mid Cap Growth Stock Portfolio

- **b. EDGAR series identifier (if any):** S000000050

- **c. LEI of Series:** LIP0ME8UWTR611J45283

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

- **a. Date of fiscal year-end:** 2022-12-31

- **b. Date as of which information is reported:** 2022-12-31

**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:** $1009670474.25

**Total Liabilities:** $488886.59

**Net Assets:** $1009181587.66

**Cash Not Reported:** $1463601.98

**Monthly Return Information**

| Class               | Month 1 Return (%)   | Month 2 Return (%)   | Month 3 Return (%)   |
|:---|:---|:---|:---|
| Class ID C000000085 | 7.64%                | 5.97%                | -4.44%               |

**Monthly Gains & Losses**

| Period   | Net Realized Gain/Loss   | Net Unrealized Appreciation/Depreciation   |
|:---|:---|:---|
| Month 1  | $-6366656.49             | $77727652.50                               |
| Month 2  | $-1747510.64             | $61071183.28                               |
| Month 3  | $-1059659.12             | $-46285596.98                              |

### 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   |
|:---|:---|:---|:---|:---|:---|:---|---:|:---|:---|:---|:---|:---|:---|:---|---:|:---|
| FMC Corp                                   | FMC Corp                                   | CUSIP: 302491303<br>LEI: CKDHZ2X64EEBQCSP7013 | Long             | EC               | CORP              | US        |     99733 | NS      | $12446678.40  | 1.23%             |  |  |  | No            |                  1 | On Loan: No      |
| Nordson Corp                               | Nordson Corp                               | CUSIP: 655663102<br>LEI: 14OS6Q5N55N95WM84M53 | Long             | EC               | CORP              | US        |     34165 | NS      | $8121703.80   | 0.80%             |  |  |  | No            |                  1 | On Loan: No      |
| Dynatrace Inc                              | Dynatrace Inc                              | CUSIP: 268150109<br>LEI: N/A                  | Long             | EC               | CORP              | US        |    344272 | NS      | $13185617.60  | 1.31%             |  |  |  | No            |                  1 | On Loan: No      |
| Hyatt Hotels Corp                          | Hyatt Hotels Corp                          | CUSIP: 448579102<br>LEI: T27JQIMTYSH41TCD5186 | Long             | EC               | CORP              | US        |     82047 | NS      | $7421151.15   | 0.74%             |  |  |  | No            |                  1 | On Loan: No      |
| PDC Energy Inc                             | PDC Energy Inc                             | CUSIP: 69327R101<br>LEI: 5493008W8H2T511J5Y59 | Long             | EC               | CORP              | US        |    172623 | NS      | $10958108.04  | 1.09%             |  |  |  | No            |                  1 | On Loan: No      |
| Alnylam Pharmaceuticals Inc                | Alnylam Pharmaceuticals Inc                | CUSIP: 02043Q107<br>LEI: 529900S3ZI14OWRJII50 | Long             | EC               | CORP              | US        |     41426 | NS      | $9844888.90   | 0.98%             |  |  |  | No            |                  1 | On Loan: No      |
| Expeditors International of Washington Inc | Expeditors International of Washington Inc | CUSIP: 302130109<br>LEI: 984500B055A804AB6E40 | Long             | EC               | CORP              | US        |     98299 | NS      | $10215232.08  | 1.01%             |  |  |  | No            |                  1 | On Loan: No      |
| Exact Sciences Corp                        | Exact Sciences Corp                        | CUSIP: 30063P105<br>LEI: 549300VM3X1FYD4N9Z14 | Long             | EC               | CORP              | US        |    237644 | NS      | $11765754.44  | 1.17%             |  |  |  | No            |                  1 | On Loan: No      |
| Synaptics Inc                              | Synaptics Inc                              | CUSIP: 87157D109<br>LEI: 549300AJ3LI4FWNRQX29 | Long             | EC               | CORP              | US        |     83390 | NS      | $7935392.40   | 0.79%             |  |  |  | No            |                  1 | On Loan: No      |
| Repligen Corp                              | Repligen Corp                              | CUSIP: 759916109<br>LEI: 54930006QJ0T5AUO1E71 | Long             | EC               | CORP              | US        |     80498 | NS      | $13629116.38  | 1.35%             |  |  |  | No            |                  1 | On Loan: No      |
| Hamilton Lane Inc                          | Hamilton Lane Inc                          | CUSIP: 407497106<br>LEI: 5493006OKN3V1NORM833 | Long             | EC               | CORP              | US        |     75328 | NS      | $4811952.64   | 0.48%             |  |  |  | No            |                  1 | On Loan: No      |
| Marathon Oil Corp                          | Marathon Oil Corp                          | CUSIP: 565849106<br>LEI: 1FRVQX2CRLGC1XLP5727 | Long             | EC               | CORP              | US        |    517435 | NS      | $14006965.45  | 1.39%             |  |  |  | No            |                  1 | On Loan: No      |
| Ball Corp                                  | Ball Corp                                  | CUSIP: 058498106<br>LEI: 0BGI85ALH27ZJP15DY16 | Long             | EC               | CORP              | US        |     78472 | NS      | $4013058.08   | 0.40%             |  |  |  | No            |                  1 | On Loan: No      |
| Tradeweb Markets Inc                       | Tradeweb Markets Inc                       | CUSIP: 892672106<br>LEI: N/A                  | Long             | EC               | CORP              | US        |    113552 | NS      | $7372931.36   | 0.73%             |  |  |  | No            |                  1 | On Loan: No      |
| LiveRamp Holdings Inc                      | LiveRamp Holdings Inc                      | CUSIP: 53815P108<br>LEI: 254900GXS75LG1X7RF88 | Long             | EC               | CORP              | US        |    143302 | NS      | $3358998.88   | 0.33%             |  |  |  | No            |                  1 | On Loan: No      |
| Sage Therapeutics Inc                      | Sage Therapeutics Inc                      | CUSIP: 78667J108<br>LEI: 5493000JX4BJS9W6CN35 | Long             | EC               | CORP              | US        |    116126 | NS      | $4429045.64   | 0.44%             |  |  |  | No            |                  1 | On Loan: No      |
| Dun & Bradstreet Holdings Inc              | Dun & Bradstreet Holdings Inc              | CUSIP: 26484T106<br>LEI: N/A                  | Long             | EC               | CORP              | US        |    380126 | NS      | $4660344.76   | 0.46%             |  |  |  | No            |                  1 | On Loan: No      |
| Celanese Corp                              | Celanese Corp                              | CUSIP: 150870103<br>LEI: 549300FHJQTDPPN41627 | Long             | EC               | CORP              | US        |     13825 | NS      | $1413468.00   | 0.14%             |  |  |  | No            |                  1 | On Loan: No      |
| Graphic Packaging Holding Co               | Graphic Packaging Holding Co               | CUSIP: 388689101<br>LEI: N/A                  | Long             | EC               | CORP              | US        |    121525 | NS      | $2703931.25   | 0.27%             |  |  |  | No            |                  1 | On Loan: No      |
| Coterra Energy Inc                         | Coterra Energy Inc                         | CUSIP: 127097103<br>LEI: FCNMH6O7VWU7LHXMK351 | Long             | EC               | CORP              | US        |    415748 | NS      | $10214928.36  | 1.01%             |  |  |  | No            |                  1 | On Loan: No      |
| Inari Medical Inc                          | Inari Medical Inc                          | CUSIP: 45332Y109<br>LEI: N/A                  | Long             | EC               | CORP              | US        |    238659 | NS      | $15169166.04  | 1.50%             |  |  |  | No            |                  1 | On Loan: No      |
| Lincoln Electric Holdings Inc              | Lincoln Electric Holdings Inc              | CUSIP: 533900106<br>LEI: BIMGBY40SIN95O01BN93 | Long             | EC               | CORP              | US        |     76269 | NS      | $11020107.81  | 1.09%             |  |  |  | No            |                  1 | On Loan: No      |
| Coherent Corp                              | Coherent Corp                              | CUSIP: 19247G107<br>LEI: 549300O5C25A0MMHHU33 | Long             | EC               | CORP              | US        |    238425 | NS      | $8368717.50   | 0.83%             |  |  |  | No            |                  1 | On Loan: No      |
| Apellis Pharmaceuticals Inc                | Apellis Pharmaceuticals Inc                | CUSIP: 03753U106<br>LEI: 254900HS0ZFRXXSB9D42 | Long             | EC               | CORP              | US        |    173639 | NS      | $8978872.69   | 0.89%             |  |  |  | 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        |     14814 | NS      | $980094.24    | 0.10%             |  |  |  | No            |                  1 | On Loan: No      |
| United Therapeutics Corp                   | United Therapeutics Corp                   | CUSIP: 91307C102<br>LEI: 5299005C4HZL4UWROC14 | Long             | EC               | CORP              | US        |     76846 | NS      | $21370104.14  | 2.12%             |  |  |  | No            |                  1 | On Loan: No      |
| IDEX Corp                                  | IDEX Corp                                  | CUSIP: 45167R104<br>LEI: 549300U5Y5EL6PHYLF13 | Long             | EC               | CORP              | US        |     89008 | NS      | $20323196.64  | 2.01%             |  |  |  | No            |                  1 | On Loan: No      |
| CDW Corp/DE                                | CDW Corp/DE                                | CUSIP: 12514G108<br>LEI: 9845001B052ABF0B6755 | Long             | EC               | CORP              | US        |     54524 | NS      | $9736895.92   | 0.96%             |  |  |  | No            |                  1 | On Loan: No      |
| Insulet Corp                               | Insulet Corp                               | CUSIP: 45784P101<br>LEI: 549300TZTYD2PYN92D43 | Long             | EC               | CORP              | US        |     71386 | NS      | $21015324.54  | 2.08%             |  |  |  | No            |                  1 | On Loan: No      |
| Olo Inc                                    | Olo Inc                                    | CUSIP: 68134L109<br>LEI: N/A                  | Long             | EC               | CORP              | US        |    494790 | NS      | $3092437.50   | 0.31%             |  |  |  | No            |                  1 | On Loan: No      |
| Targa Resources Corp                       | Targa Resources Corp                       | CUSIP: 87612G101<br>LEI: 5493003QENHHS261UR94 | Long             | EC               | CORP              | US        |    228453 | NS      | $16791295.50  | 1.66%             |  |  |  | No            |                  1 | On Loan: No      |
| Syneos Health Inc                          | Syneos Health Inc                          | CUSIP: 87166B102<br>LEI: 549300F1ZGKDS8P6GU13 | Long             | EC               | CORP              | US        |     58739 | NS      | $2154546.52   | 0.21%             |  |  |  | No            |                  1 | On Loan: No      |
| Axon Enterprise Inc                        | Axon Enterprise Inc                        | CUSIP: 05464C101<br>LEI: 549300QP2IEEGFE16681 | Long             | EC               | CORP              | US        |    153505 | NS      | $25471084.65  | 2.52%             |  |  |  | No            |                  1 | On Loan: No      |
| Wingstop Inc                               | Wingstop Inc                               | CUSIP: 974155103<br>LEI: 549300SSH3F8HPIM3Q47 | Long             | EC               | CORP              | US        |     77770 | NS      | $10702707.40  | 1.06%             |  |  |  | No            |                  1 | On Loan: No      |
| Teradata Corp                              | Teradata Corp                              | CUSIP: 88076W103<br>LEI: 549300JU9SOUHV4U4R71 | Long             | EC               | CORP              | US        |    121860 | NS      | $4101807.60   | 0.41%             |  |  |  | No            |                  1 | On Loan: No      |
| Black Hills Corp                           | Black Hills Corp                           | CUSIP: 092113109<br>LEI: 3MGELCRSTNSAMJ962671 | Long             | EC               | CORP              | US        |     72617 | NS      | $5107879.78   | 0.51%             |  |  |  | No            |                  1 | On Loan: No      |
| M&T Bank Corp                              | M&T Bank Corp                              | CUSIP: 55261F104<br>LEI: 549300WYXDDBYRASEG81 | Long             | EC               | CORP              | US        |     90922 | NS      | $13189145.32  | 1.31%             |  |  |  | No            |                  1 | On Loan: No      |
| Integra LifeSciences Holdings Corp         | Integra LifeSciences Holdings Corp         | CUSIP: 457985208<br>LEI: WB7IJCYY8YFTENS4O147 | Long             | EC               | CORP              | US        |    192256 | NS      | $10779793.92  | 1.07%             |  |  |  | No            |                  1 | On Loan: No      |
| W R Berkley Corp                           | W R Berkley Corp                           | CUSIP: 084423102<br>LEI: SQOAGCLKBDWNVYV1OV80 | Long             | EC               | CORP              | US        |    112876 | NS      | $8191411.32   | 0.81%             |  |  |  | No            |                  1 | On Loan: No      |
| Robert Half International Inc              | Robert Half International Inc              | CUSIP: 770323103<br>LEI: 529900VPCUY9H3HLIC08 | Long             | EC               | CORP              | US        |     69193 | NS      | $5108519.19   | 0.51%             |  |  |  | No            |                  1 | On Loan: No      |
| MongoDB Inc                                | MongoDB Inc                                | CUSIP: 60937P106<br>LEI: 549300TPTG69WKWE1Z37 | Long             | EC               | CORP              | US        |     53457 | NS      | $10522475.88  | 1.04%             |  |  |  | No            |                  1 | On Loan: No      |
| TransUnion                                 | TransUnion                                 | CUSIP: 89400J107<br>LEI: 549300ZS772LUNUMRB03 | Long             | EC               | CORP              | US        |     83881 | NS      | $4760246.75   | 0.47%             |  |  |  | No            |                  1 | On Loan: No      |
| Guidewire Software Inc                     | Guidewire Software Inc                     | CUSIP: 40171V100<br>LEI: 549300WXSG0J8IXZCK32 | Long             | EC               | CORP              | US        |     96804 | NS      | $6056058.24   | 0.60%             |  |  |  | No            |                  1 | On Loan: No      |
| Etsy Inc                                   | Etsy Inc                                   | CUSIP: 29786A106<br>LEI: 54930089Q7XT501AEA40 | Long             | EC               | CORP              | US        |    143599 | NS      | $17200288.22  | 1.70%             |  |  |  | No            |                  1 | On Loan: No      |
| Host Hotels & Resorts Inc                  | Host Hotels & Resorts Inc                  | CUSIP: 44107P104<br>LEI: N6EL63S0K3PB1YFTDI24 | Long             | EC               |  | US        |    349211 | NS      | $5604836.55   | 0.56%             |  |  |  | No            |                  1 | On Loan: No      |
| Steel Dynamics Inc                         | Steel Dynamics Inc                         | CUSIP: 858119100<br>LEI: 549300HGGKEL4FYTTQ83 | Long             | EC               | CORP              | US        |     47044 | NS      | $4596198.80   | 0.46%             |  |  |  | No            |                  1 | On Loan: No      |
| Shift4 Payments Inc                        | Shift4 Payments Inc                        | CUSIP: 82452J109<br>LEI: N/A                  | Long             | EC               | CORP              | US        |    342787 | NS      | $19172076.91  | 1.90%             |  |  |  | No            |                  1 | On Loan: No      |
| First Republic Bank/CA                     | First Republic Bank/CA                     | CUSIP: 33616C100<br>LEI: YWC0TIKBQM2JV8L4IV08 | Long             | EC               | CORP              | US        |    102912 | NS      | $12543943.68  | 1.24%             |  |  |  | No            |                  1 | On Loan: No      |
| Markel Corp                                | Markel Corp                                | CUSIP: 570535104<br>LEI: 549300SCNO12JLWIK605 | Long             | EC               | CORP              | US        |     14061 | NS      | $18525226.89  | 1.84%             |  |  |  | No            |                  1 | On Loan: No      |
| Vizio Holding Corp                         | Vizio Holding Corp                         | CUSIP: 92858V101<br>LEI: N/A                  | Long             | EC               | CORP              | US        |    675064 | NS      | $5002224.24   | 0.50%             |  |  |  | No            |                  1 | On Loan: No      |
| Cargurus Inc                               | Cargurus Inc                               | CUSIP: 141788109<br>LEI: 54930027BKQN6B7X7G78 | Long             | EC               | CORP              | US        |    360528 | NS      | $5050997.28   | 0.50%             |  |  |  | No            |                  1 | On Loan: No      |
| ICON PLC                                   | ICON PLC                                   | CUSIP: 000000000<br>LEI: 6354008SRQGEMC4XFI67 | Long             | EC               | CORP              | IE        |     49168 | NS      | $9550884.00   | 0.95%             |  |  |  | No            |                  1 | On Loan: No      |
| Knight-Swift Transportation Holdings Inc   | Knight-Swift Transportation Holdings Inc   | CUSIP: 499049104<br>LEI: N/A                  | Long             | EC               | CORP              | US        |    214797 | NS      | $11257510.77  | 1.12%             |  |  |  | No            |                  1 | On Loan: No      |
| Silgan Holdings Inc                        | Silgan Holdings Inc                        | CUSIP: 827048109<br>LEI: KAF673KJXD92C8KSLU49 | Long             | EC               | CORP              | US        |    282585 | NS      | $14649206.40  | 1.45%             |  |  |  | No            |                  1 | On Loan: No      |
| Lumentum Holdings Inc                      | Lumentum Holdings Inc                      | CUSIP: 55024U109<br>LEI: 549300JLWRRC38DWEF52 | Long             | EC               | CORP              | US        |    150197 | NS      | $7835777.49   | 0.78%             |  |  |  | No            |                  1 | On Loan: No      |
| CommScope Holding Co Inc                   | CommScope Holding Co Inc                   | CUSIP: 20337X109<br>LEI: 254900AW4CEPCQWSRI58 | Long             | EC               | CORP              | US        |    243344 | NS      | $1788578.40   | 0.18%             |  |  |  | No            |                  1 | On Loan: No      |
| Nuvei Corp                                 | Nuvei Corp                                 | CUSIP: 67079A102<br>LEI: N/A                  | Long             | EC               | CORP              | CA        |    400025 | NS      | $10164635.25  | 1.01%             |  |  |  | No            |                  1 | On Loan: No      |
| Flex Ltd                                   | Flex Ltd                                   | CUSIP: 000000000<br>LEI: 549300EAQH74YHD07T53 | Long             | EC               | CORP              | SG        |    227110 | NS      | $4873780.60   | 0.48%             |  |  |  | No            |                  1 | On Loan: No      |
| GFL Environmental Inc                      | GFL Environmental Inc                      | CUSIP: 36168Q104<br>LEI: 549300FYK4MBXWIVZU26 | Long             | EC               | CORP              | CA        |    176570 | NS      | $5161141.10   | 0.51%             |  |  |  | No            |                  1 | On Loan: No      |
| Cable One Inc                              | Cable One Inc                              | CUSIP: 12685J105<br>LEI: 549300648QS85T0XSH18 | Long             | EC               | CORP              | US        |     13303 | NS      | $9469873.58   | 0.94%             |  |  |  | No            |                  1 | On Loan: No      |
| Watsco Inc                                 | Watsco Inc                                 | CUSIP: 942622200<br>LEI: 549300F1Y3LN5BX5WN75 | Long             | EC               | CORP              | US        |     33390 | NS      | $8327466.00   | 0.83%             |  |  |  | No            |                  1 | On Loan: No      |
| Middleby Corp/The                          | Middleby Corp/The                          | CUSIP: 596278101<br>LEI: JDFO86U9VQRBKW5KYA35 | Long             | EC               | CORP              | US        |     43516 | NS      | $5826792.40   | 0.58%             |  |  |  | No            |                  1 | On Loan: No      |
| YETI Holdings Inc                          | YETI Holdings Inc                          | CUSIP: 98585X104<br>LEI: 549300DSQICIGNT5GO63 | Long             | EC               | CORP              | US        |    301334 | NS      | $12448107.54  | 1.23%             |  |  |  | No            |                  1 | On Loan: No      |
| NiSource Inc                               | NiSource Inc                               | CUSIP: 65473P105<br>LEI: 549300D8GOWWH0SJB189 | Long             | EC               | CORP              | US        |    167161 | NS      | $4583554.62   | 0.45%             |  |  |  | No            |                  1 | On Loan: No      |
| F5 Inc                                     | F5 Inc                                     | CUSIP: 315616102<br>LEI: 54930015FPK9KT966303 | Long             | EC               | CORP              | US        |     58920 | NS      | $8455609.20   | 0.84%             |  |  |  | No            |                  1 | On Loan: No      |
| VeriSign Inc                               | VeriSign Inc                               | CUSIP: 92343E102<br>LEI: LMPL4N8ZOJRMF0KOF759 | Long             | EC               | CORP              | US        |     53763 | NS      | $11045070.72  | 1.09%             |  |  |  | No            |                  1 | On Loan: No      |
| Bio-Techne Corp                            | Bio-Techne Corp                            | CUSIP: 09073M104<br>LEI: 54930073RLKQ51TILZ35 | Long             | EC               | CORP              | US        |    201173 | NS      | $16673218.24  | 1.65%             |  |  |  | No            |                  1 | On Loan: No      |
| Jazz Pharmaceuticals PLC                   | Jazz Pharmaceuticals PLC                   | CUSIP: 000000000<br>LEI: 635400GAUMJCLEZRRV50 | Long             | EC               | CORP              | IE        |    118631 | NS      | $18899104.61  | 1.87%             |  |  |  | No            |                  1 | On Loan: No      |
| First Solar Inc                            | First Solar Inc                            | CUSIP: 336433107<br>LEI: 549300NPYMLM4NHTOF27 | Long             | EC               | CORP              | US        |     47469 | NS      | $7110381.51   | 0.70%             |  |  |  | No            |                  1 | On Loan: No      |
| CarMax Inc                                 | CarMax Inc                                 | CUSIP: 143130102<br>LEI: N/A                  | Long             | EC               | CORP              | US        |    135185 | NS      | $8231414.65   | 0.82%             |  |  |  | No            |                  1 | On Loan: No      |
| Carter's Inc                               | Carter's Inc                               | CUSIP: 146229109<br>LEI: 5299003WAQK4R3L3ZU36 | Long             | EC               | CORP              | US        |     28058 | NS      | $2093407.38   | 0.21%             |  |  |  | No            |                  1 | On Loan: No      |
| WEX Inc                                    | WEX Inc                                    | CUSIP: 96208T104<br>LEI: T9M5IGROL1TL1G5OV478 | Long             | EC               | CORP              | US        |    126980 | NS      | $20780277.00  | 2.06%             |  |  |  | No            |                  1 | On Loan: No      |
| MKS Instruments Inc                        | MKS Instruments Inc                        | CUSIP: 55306N104<br>LEI: 549300KEQATBHAGVF505 | Long             | EC               | CORP              | US        |     23908 | NS      | $2025724.84   | 0.20%             |  |  |  | No            |                  1 | On Loan: No      |
| JB Hunt Transport Services Inc             | JB Hunt Transport Services Inc             | CUSIP: 445658107<br>LEI: 549300XCD1MPI1C5GK90 | Long             | EC               | CORP              | US        |     71596 | NS      | $12483478.56  | 1.24%             |  |  |  | No            |                  1 | On Loan: No      |
| Ultragenyx Pharmaceutical Inc              | Ultragenyx Pharmaceutical Inc              | CUSIP: 90400D108<br>LEI: 529900EV44GVDN1DCX77 | Long             | EC               | CORP              | US        |    199392 | NS      | $9237831.36   | 0.92%             |  |  |  | No            |                  1 | On Loan: No      |
| Datadog Inc                                | Datadog Inc                                | CUSIP: 23804L103<br>LEI: 549300F6JNO0KRPO1K63 | Long             | EC               | CORP              | US        |    110460 | NS      | $8118810.00   | 0.80%             |  |  |  | No            |                  1 | On Loan: No      |
| Ingersoll Rand Inc                         | Ingersoll Rand Inc                         | CUSIP: 45687V106<br>LEI: 5299004C02FMZCUOIR50 | Long             | EC               | CORP              | US        |    269333 | NS      | $14072649.25  | 1.39%             |  |  |  | No            |                  1 | On Loan: No      |
| Credit Acceptance Corp                     | Credit Acceptance Corp                     | CUSIP: 225310101<br>LEI: N/A                  | Long             | EC               | CORP              | US        |     37792 | NS      | $17928524.80  | 1.78%             |  |  |  | No            |                  1 | On Loan: No      |
| Monolithic Power Systems Inc               | Monolithic Power Systems Inc               | CUSIP: 609839105<br>LEI: 529900TB7O85LSZ1XU31 | Long             | EC               | CORP              | US        |      8596 | NS      | $3039631.56   | 0.30%             |  |  |  | No            |                  1 | On Loan: No      |
| Neurocrine Biosciences Inc                 | Neurocrine Biosciences Inc                 | CUSIP: 64125C109<br>LEI: 549300FECER0XBN49756 | Long             | EC               | CORP              | US        |     75927 | NS      | $9068720.88   | 0.90%             |  |  |  | No            |                  1 | On Loan: No      |
| Silicon Laboratories Inc                   | Silicon Laboratories Inc                   | CUSIP: 826919102<br>LEI: 4PRDF8Q9TDHRVZKZSZ47 | Long             | EC               | CORP              | US        |     46763 | NS      | $6344336.21   | 0.63%             |  |  |  | No            |                  1 | On Loan: No      |
| White Mountains Insurance Group Ltd        | White Mountains Insurance Group Ltd        | CUSIP: 000000000<br>LEI: 549300N3FL068JERBG02 | Long             | EC               | CORP              | BM        |      3415 | NS      | $4829936.95   | 0.48%             |  |  |  | No            |                  1 | On Loan: No      |
| NVR Inc                                    | NVR Inc                                    | CUSIP: 62944T105<br>LEI: 529900RWXR4JI3JYTV70 | Long             | EC               | CORP              | US        |      4486 | NS      | $20692033.88  | 2.05%             |  |  |  | No            |                  1 | On Loan: No      |
| U-Haul Holding Co                          | U-Haul Holding Co                          | CUSIP: 023586506<br>LEI: 5493003WIDMLDHYC6Y24 | Long             | EC               | CORP              | US        |    224469 | NS      | $12341305.62  | 1.22%             |  |  |  | No            |                  1 | On Loan: No      |
| Choice Hotels International Inc            | Choice Hotels International Inc            | CUSIP: 169905106<br>LEI: 5493003CYRY5RFGTIR97 | Long             | EC               | CORP              | US        |    122701 | NS      | $13821040.64  | 1.37%             |  |  |  | No            |                  1 | On Loan: No      |
| Ovintiv Inc                                | Ovintiv Inc                                | CUSIP: 69047Q102<br>LEI: N/A                  | Long             | EC               | CORP              | US        |    237297 | NS      | $12033330.87  | 1.19%             |  |  |  | No            |                  1 | On Loan: No      |
| Roku Inc                                   | Roku Inc                                   | CUSIP: 77543R102<br>LEI: 549300KR6ITU0YIR1T71 | Long             | EC               | CORP              | US        |     91780 | NS      | $3735446.00   | 0.37%             |  |  |  | No            |                  1 | On Loan: No      |
| Lennox International Inc                   | Lennox International Inc                   | CUSIP: 526107107<br>LEI: S7DWAC87RDMPBF77GJ92 | Long             | EC               | CORP              | US        |     57879 | NS      | $13846393.17  | 1.37%             |  |  |  | No            |                  1 | On Loan: No      |
| Builders FirstSource Inc                   | Builders FirstSource Inc                   | CUSIP: 12008R107<br>LEI: 549300W0SKP6L3H7DP63 | Long             | EC               | CORP              | US        |    129610 | NS      | $8409096.80   | 0.83%             |  |  |  | No            |                  1 | On Loan: No      |
| Chewy Inc                                  | Chewy Inc                                  | CUSIP: 16679L109<br>LEI: 254900NPQSTG9I422879 | Long             | EC               | CORP              | US        |    376747 | NS      | $13969778.76  | 1.38%             |  |  |  | No            |                  1 | On Loan: No      |
| Teleflex Inc                               | Teleflex Inc                               | CUSIP: 879369106<br>LEI: UUL85LWXB4NGSWWXIQ25 | Long             | EC               | CORP              | US        |     48096 | NS      | $12006204.48  | 1.19%             |  |  |  | No            |                  1 | On Loan: No      |
| Visteon Corp                               | Visteon Corp                               | CUSIP: 92839U206<br>LEI: 549300MOVLYHRW4GGW78 | Long             | EC               | CORP              | US        |     74572 | NS      | $9756254.76   | 0.97%             |  |  |  | No            |                  1 | On Loan: No      |
| Informatica Inc                            | Informatica Inc                            | CUSIP: 45674M101<br>LEI: N/A                  | Long             | EC               | CORP              | US        |    587855 | NS      | $9576157.95   | 0.95%             |  |  |  | No            |                  1 | On Loan: No      |
| Rexford Industrial Realty Inc              | Rexford Industrial Realty Inc              | CUSIP: 76169C100<br>LEI: 549300MSLO0DF0EMX355 | Long             | EC               |  | US        |     91342 | NS      | $4990926.88   | 0.49%             |  |  |  | No            |                  1 | On Loan: No      |
| PTC Therapeutics Inc                       | PTC Therapeutics Inc                       | CUSIP: 69366J200<br>LEI: 549300UJLWOIWFDGB318 | Long             | EC               | CORP              | US        |    201952 | NS      | $7708507.84   | 0.76%             |  |  |  | No            |                  1 | On Loan: No      |
| Westinghouse Air Brake Technologies Corp   | Westinghouse Air Brake Technologies Corp   | CUSIP: 929740108<br>LEI: 06BTX5UWZD0GQ5N5Y745 | Long             | EC               | CORP              | US        |    159441 | NS      | $15913806.21  | 1.58%             |  |  |  | No            |                  1 | On Loan: No      |
| Q2 Holdings Inc                            | Q2 Holdings Inc                            | CUSIP: 74736L109<br>LEI: 549300M9RKR9DZXWS696 | Long             | EC               | CORP              | US        |    248257 | NS      | $6670665.59   | 0.66%             |  |  |  | No            |                  1 | On Loan: No      |
| Fair Isaac Corp                            | Fair Isaac Corp                            | CUSIP: 303250104<br>LEI: RI6HET5SJUEY30V1PS26 | Long             | EC               | CORP              | US        |     15777 | NS      | $9443796.66   | 0.94%             |  |  |  | No            |                  1 | On Loan: No      |
| Graco Inc                                  | Graco Inc                                  | CUSIP: 384109104<br>LEI: 4T5VJ4S81BRT6Q7GGT78 | Long             | EC               | CORP              | US        |    129313 | NS      | $8697592.38   | 0.86%             |  |  |  | No            |                  1 | On Loan: No      |
| Genpact Ltd                                | Genpact Ltd                                | CUSIP: 000000000<br>LEI: 529900OSEC6Q0L4L5B35 | Long             | EC               | CORP              | BM        |    445997 | NS      | $20658581.04  | 2.05%             |  |  |  | No            |                  1 | On Loan: No      |
| Element Solutions Inc                      | Element Solutions Inc                      | CUSIP: 28618M106<br>LEI: 549300FLGN6P5CU20J91 | Long             | EC               | CORP              | US        |    787105 | NS      | $14317439.95  | 1.42%             |  |  |  | No            |                  1 | On Loan: No      |
| CH Robinson Worldwide Inc                  | CH Robinson Worldwide Inc                  | CUSIP: 12541W209<br>LEI: 529900WNWN5L0OVDHA79 | Long             | EC               | CORP              | US        |    104364 | NS      | $9555567.84   | 0.95%             |  |  |  | No            |                  1 | On Loan: No      |

### Signature

**Date Signed:** 2023-01-25

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

**Signature:** Phillip Rinzel

**Name of Signer:** Phillip Rinzel

**Title:** Controller and Chief Accounting Officer