# EDGAR Filing Document

**Accession Number:** 0000742212
**File Stem:** 0001752724-25-192559
**Filing Date:** 2025-8
**Character Count:** 39754
**Document Hash:** f36b20efc52d0d0f4090608cf0ef5e17
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001752724-25-192559.hdr.sgml**: 20250819

**ACCESSION NUMBER**: 0001752724-25-192559

**CONFORMED SUBMISSION TYPE**: NPORT-P

**PUBLIC DOCUMENT COUNT**: 1

**CONFORMED PERIOD OF REPORT**: 20250630

**FILED AS OF DATE**: 20250819

**DATE AS OF CHANGE**: 20250819

**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:** 251231241

**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:** 2025-12-31

- **b. Date as of which information is reported:** 2025-06-30

**Item A.4. Final filing**

Does the Fund anticipate that this will be its final filing on Form N-PORT? **No**

### Fund Information

**Total Assets:** $1065267406.64

**Total Liabilities:** $505278.40

**Net Assets:** $1064762128.24

**Cash Not Reported:** $2635930.73

**Monthly Return Information**

| Class               | Month 1 Return (%)   | Month 2 Return (%)   | Month 3 Return (%)   |
|:---|:---|:---|:---|
| Class ID C000000085 | 2.65%                | 8.55%                | 5.41%                |

**Monthly Gains & Losses**

| Period   | Net Realized Gain/Loss   | Net Unrealized Appreciation/Depreciation   |
|:---|:---|:---|
| Month 1  | $-7662600.85             | $31632098.72                               |
| Month 2  | $-15302042.43            | $95437671.78                               |
| Month 3  | $25578484.87             | $29257797.69                               |

### 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   |
|:---|:---|:---|:---|:---|:---|:---|---:|:---|:---|:---|:---|:---|:---|:---|---:|:---|
| On Holding AG                            | On Holding AG                            | CUSIP: 000000000<br>LEI: N/A                  | Long             | EC               | CORP              | CH        |    237378 | NS      | $12355524.90  | 1.16%             |  |  |  | No            |                  1 | On Loan: No      |
| AZEK Co Inc/The                          | AZEK Co Inc/The                          | CUSIP: 05478C105<br>LEI: 5493002LDDDU1RX46815 | Long             | EC               | CORP              | US        |     54189 | NS      | $2945172.15   | 0.28%             |  |  |  | No            |                  1 | On Loan: No      |
| AMETEK Inc                               | AMETEK Inc                               | CUSIP: 031100100<br>LEI: 549300WZDEF9KKE40E98 | Long             | EC               | CORP              | US        |     34782 | NS      | $6294150.72   | 0.59%             |  |  |  | No            |                  1 | On Loan: No      |
| Alnylam Pharmaceuticals Inc              | Alnylam Pharmaceuticals Inc              | CUSIP: 02043Q107<br>LEI: 529900S3ZI14OWRJII50 | Long             | EC               | CORP              | US        |     56987 | NS      | $18582890.83  | 1.75%             |  |  |  | No            |                  1 | On Loan: No      |
| Teledyne Technologies Inc                | Teledyne Technologies Inc                | CUSIP: 879360105<br>LEI: 549300VSMO9KYQWDND94 | Long             | EC               | CORP              | US        |      9171 | NS      | $4698395.01   | 0.44%             |  |  |  | No            |                  1 | On Loan: No      |
| Vistra Corp                              | Vistra Corp                              | CUSIP: 92840M102<br>LEI: 549300KP43CPCUJOOG15 | Long             | EC               | CORP              | US        |    171551 | NS      | $33248299.31  | 3.12%             |  |  |  | No            |                  1 | On Loan: No      |
| MSCI Inc                                 | MSCI Inc                                 | CUSIP: 55354G100<br>LEI: 549300HTIN2PD78UB763 | Long             | EC               | CORP              | US        |     19503 | NS      | $11248160.22  | 1.06%             |  |  |  | No            |                  1 | On Loan: No      |
| Chipotle Mexican Grill Inc               | Chipotle Mexican Grill Inc               | CUSIP: 169656105<br>LEI: N/A                  | Long             | EC               | CORP              | US        |    106302 | NS      | $5968857.30   | 0.56%             |  |  |  | No            |                  1 | On Loan: No      |
| Atlassian Corp                           | Atlassian Corp                           | CUSIP: 049468101<br>LEI: 549300V7ZY5P02D2MY38 | Long             | EC               | CORP              | US        |     30317 | NS      | $6157079.53   | 0.58%             |  |  |  | No            |                  1 | On Loan: No      |
| Okta Inc                                 | Okta Inc                                 | CUSIP: 679295105<br>LEI: 549300N8J06I8MRHU620 | Long             | EC               | CORP              | US        |     63632 | NS      | $6361291.04   | 0.60%             |  |  |  | No            |                  1 | On Loan: No      |
| Hilton Worldwide Holdings Inc            | Hilton Worldwide Holdings Inc            | CUSIP: 43300A203<br>LEI: 549300HVGPK36ICB0B89 | Long             | EC               | CORP              | US        |    115267 | NS      | $30700212.78  | 2.88%             |  |  |  | No            |                  1 | On Loan: No      |
| Interactive Brokers Group Inc            | Interactive Brokers Group Inc            | CUSIP: 45841N107<br>LEI: 5493004DT6DCDUZNDM53 | Long             | EC               | CORP              | US        |    129185 | NS      | $7158140.85   | 0.67%             |  |  |  | No            |                  1 | On Loan: No      |
| Tractor Supply Co                        | Tractor Supply Co                        | CUSIP: 892356106<br>LEI: 549300OJ9VZHZRO6I137 | Long             | EC               | CORP              | US        |    127339 | NS      | $6719679.03   | 0.63%             |  |  |  | No            |                  1 | On Loan: No      |
| Tradeweb Markets Inc                     | Tradeweb Markets Inc                     | CUSIP: 892672106<br>LEI: N/A                  | Long             | EC               | CORP              | US        |     67570 | NS      | $9892248.00   | 0.93%             |  |  |  | No            |                  1 | On Loan: No      |
| Cloudflare Inc                           | Cloudflare Inc                           | CUSIP: 18915M107<br>LEI: 5493007DY18BGNLDWU14 | Long             | EC               | CORP              | US        |    107123 | NS      | $20977897.09  | 1.97%             |  |  |  | No            |                  1 | On Loan: No      |
| Planet Fitness Inc                       | Planet Fitness Inc                       | CUSIP: 72703H101<br>LEI: 549300LLE5HUPF6H8G33 | Long             | EC               | CORP              | US        |     84612 | NS      | $9226938.60   | 0.87%             |  |  |  | No            |                  1 | On Loan: No      |
| Teradyne Inc                             | Teradyne Inc                             | CUSIP: 880770102<br>LEI: C3X4YJ278QNZHRJULN75 | Long             | EC               | CORP              | US        |     70766 | NS      | $6363278.72   | 0.60%             |  |  |  | No            |                  1 | On Loan: No      |
| EOG Resources Inc                        | EOG Resources Inc                        | CUSIP: 26875P101<br>LEI: XWTZDRYZPBUHIQBKDB46 | Long             | EC               | CORP              | US        |     54784 | NS      | $6552714.24   | 0.62%             |  |  |  | No            |                  1 | On Loan: No      |
| Agilent Technologies Inc                 | Agilent Technologies Inc                 | CUSIP: 00846U101<br>LEI: QUIX8Y7A2WP0XRMW7G29 | Long             | EC               | CORP              | US        |     46567 | NS      | $5495371.67   | 0.52%             |  |  |  | No            |                  1 | On Loan: No      |
| Burlington Stores Inc                    | Burlington Stores Inc                    | CUSIP: 122017106<br>LEI: 5299003Z37DVGKKC1W09 | Long             | EC               | CORP              | US        |     46070 | NS      | $10717724.80  | 1.01%             |  |  |  | No            |                  1 | On Loan: No      |
| Williams Cos Inc/The                     | Williams Cos Inc/The                     | CUSIP: 969457100<br>LEI: D71FAKCBLFS2O0RBPG08 | Long             | EC               | CORP              | US        |    178851 | NS      | $11233631.31  | 1.06%             |  |  |  | No            |                  1 | On Loan: No      |
| HubSpot Inc                              | HubSpot Inc                              | CUSIP: 443573100<br>LEI: 529900BLNVEW0MVKJB37 | Long             | EC               | CORP              | US        |     27162 | NS      | $15119184.06  | 1.42%             |  |  |  | No            |                  1 | On Loan: No      |
| Cooper Cos Inc/The                       | Cooper Cos Inc/The                       | CUSIP: 216648501<br>LEI: QJKMVPIGLH7530PCUE20 | Long             | EC               | CORP              | US        |     70250 | NS      | $4998990.00   | 0.47%             |  |  |  | No            |                  1 | On Loan: No      |
| Robinhood Markets Inc                    | Robinhood Markets Inc                    | CUSIP: 770700102<br>LEI: 213800FS5AO3YWIE6F63 | Long             | EC               | CORP              | US        |    166137 | NS      | $15555407.31  | 1.46%             |  |  |  | No            |                  1 | On Loan: No      |
| Cheniere Energy Inc                      | Cheniere Energy Inc                      | CUSIP: 16411R208<br>LEI: MIHC87W9WTYSYZWV1J40 | Long             | EC               | CORP              | US        |     48407 | NS      | $11788072.64  | 1.11%             |  |  |  | No            |                  1 | On Loan: No      |
| Casey's General Stores Inc               | Casey's General Stores Inc               | CUSIP: 147528103<br>LEI: 549300CAFWSI86V66Q65 | Long             | EC               | CORP              | US        |     18663 | NS      | $9523169.01   | 0.89%             |  |  |  | No            |                  1 | On Loan: No      |
| Air Lease Corp                           | Air Lease Corp                           | CUSIP: 00912X302<br>LEI: 5493004NW4M4P8TMMK63 | Long             | EC               | CORP              | US        |    107588 | NS      | $6292822.12   | 0.59%             |  |  |  | No            |                  1 | On Loan: No      |
| Carvana Co                               | Carvana Co                               | CUSIP: 146869102<br>LEI: 5493003WEAK2PJ5WS063 | Long             | EC               | CORP              | US        |     39056 | NS      | $13160309.76  | 1.24%             |  |  |  | No            |                  1 | On Loan: No      |
| Somnigroup International Inc             | Somnigroup International Inc             | CUSIP: 88023U101<br>LEI: 549300HFEKVR3US71V91 | Long             | EC               | CORP              | US        |     98395 | NS      | $6695779.75   | 0.63%             |  |  |  | No            |                  1 | On Loan: No      |
| CBRE Group Inc                           | CBRE Group Inc                           | CUSIP: 12504L109<br>LEI: 52990016II9MJ2OSWA10 | Long             | EC               | CORP              | US        |     69518 | NS      | $9740862.16   | 0.91%             |  |  |  | No            |                  1 | On Loan: No      |
| Raymond James Financial Inc              | Raymond James Financial Inc              | CUSIP: 754730109<br>LEI: RGUZHJ05YTITL6D76949 | Long             | EC               | CORP              | US        |     40372 | NS      | $6191853.64   | 0.58%             |  |  |  | No            |                  1 | On Loan: No      |
| Inspire Medical Systems Inc              | Inspire Medical Systems Inc              | CUSIP: 457730109<br>LEI: 549300XQQCQ7HCJKTW25 | Long             | EC               | CORP              | US        |     17872 | NS      | $2319249.44   | 0.22%             |  |  |  | No            |                  1 | On Loan: No      |
| Royal Caribbean Cruises Ltd              | Royal Caribbean Cruises Ltd              | CUSIP: 000000000<br>LEI: K2NEH8QNVW44JIWK7Z55 | Long             | EC               | CORP              | LR        |    111318 | NS      | $34858118.52  | 3.27%             |  |  |  | No            |                  1 | On Loan: No      |
| Tyler Technologies Inc                   | Tyler Technologies Inc                   | CUSIP: 902252105<br>LEI: 25490040SMU4Z8LBCW70 | Long             | EC               | CORP              | US        |      8996 | NS      | $5333188.64   | 0.50%             |  |  |  | No            |                  1 | On Loan: No      |
| Viking Therapeutics Inc                  | Viking Therapeutics Inc                  | CUSIP: 92686J106<br>LEI: 529900IVC72YPFA25M37 | Long             | EC               | CORP              | US        |     93128 | NS      | $2467892.00   | 0.23%             |  |  |  | No            |                  1 | On Loan: No      |
| Vertiv Holdings Co                       | Vertiv Holdings Co                       | CUSIP: 92537N108<br>LEI: 549300KTTIRAOGXCRV69 | Long             | EC               | CORP              | US        |    121096 | NS      | $15549937.36  | 1.46%             |  |  |  | No            |                  1 | On Loan: No      |
| Penumbra Inc                             | Penumbra Inc                             | CUSIP: 70975L107<br>LEI: 549300RGE06P3ECANU72 | Long             | EC               | CORP              | US        |     26355 | NS      | $6763483.65   | 0.64%             |  |  |  | No            |                  1 | On Loan: No      |
| Revolution Medicines Inc                 | Revolution Medicines Inc                 | CUSIP: 76155X100<br>LEI: 549300JU3X0LBCQ65892 | Long             | EC               | CORP              | US        |     62322 | NS      | $2292826.38   | 0.22%             |  |  |  | No            |                  1 | On Loan: No      |
| Comfort Systems USA Inc                  | Comfort Systems USA Inc                  | CUSIP: 199908104<br>LEI: 5299009DT1ZA5HTU6R38 | Long             | EC               | CORP              | US        |     22795 | NS      | $12222906.95  | 1.15%             |  |  |  | No            |                  1 | On Loan: No      |
| IQVIA Holdings Inc                       | IQVIA Holdings Inc                       | CUSIP: 46266C105<br>LEI: 549300W3R20NM4KQPH86 | Long             | EC               | CORP              | US        |     17589 | NS      | $2771850.51   | 0.26%             |  |  |  | No            |                  1 | On Loan: No      |
| Veeva Systems Inc                        | Veeva Systems Inc                        | CUSIP: 922475108<br>LEI: 549300YZEXPDB92M2F02 | Long             | EC               | CORP              | US        |     59300 | NS      | $17077214.00  | 1.60%             |  |  |  | No            |                  1 | On Loan: No      |
| Axon Enterprise Inc                      | Axon Enterprise Inc                      | CUSIP: 05464C101<br>LEI: 549300QP2IEEGFE16681 | Long             | EC               | CORP              | US        |     26076 | NS      | $21589363.44  | 2.03%             |  |  |  | No            |                  1 | On Loan: No      |
| Trade Desk Inc/The                       | Trade Desk Inc/The                       | CUSIP: 88339J105<br>LEI: 549300GXPD31VT3E0P46 | Long             | EC               | CORP              | US        |    104585 | NS      | $7529074.15   | 0.71%             |  |  |  | No            |                  1 | On Loan: No      |
| Trane Technologies PLC                   | Trane Technologies PLC                   | CUSIP: 000000000<br>LEI: 549300BURLR9SLYY2705 | Long             | EC               | CORP              | IE        |     12642 | NS      | $5529737.22   | 0.52%             |  |  |  | No            |                  1 | On Loan: No      |
| Coupang Inc                              | Coupang Inc                              | CUSIP: 22266T109<br>LEI: 549300XR4L1D80AK4W76 | Long             | EC               | CORP              | US        |    212248 | NS      | $6358950.08   | 0.60%             |  |  |  | No            |                  1 | On Loan: No      |
| Monday.com Ltd                           | Monday.com Ltd                           | CUSIP: 000000000<br>LEI: 984500MDAFVD86E3B328 | Long             | EC               | CORP              | IL        |     23881 | NS      | $7510096.88   | 0.71%             |  |  |  | No            |                  1 | On Loan: No      |
| Rubrik Inc                               | Rubrik Inc                               | CUSIP: 781154109<br>LEI: 254900TRGK2WTBYMYU27 | Long             | EC               | CORP              | US        |     47226 | NS      | $4230977.34   | 0.40%             |  |  |  | No            |                  1 | On Loan: No      |
| Take-Two Interactive Software Inc        | Take-Two Interactive Software Inc        | CUSIP: 874054109<br>LEI: BOMSTHHJK882EWYX3334 | Long             | EC               | CORP              | US        |     67430 | NS      | $16375375.50  | 1.54%             |  |  |  | No            |                  1 | On Loan: No      |
| Crown Castle Inc                         | Crown Castle Inc                         | CUSIP: 22822V101<br>LEI: 54930012H97VSM0I2R19 | Long             | EC               |  | US        |     45557 | NS      | $4680070.61   | 0.44%             |  |  |  | No            |                  1 | On Loan: No      |
| CyberArk Software Ltd                    | CyberArk Software Ltd                    | CUSIP: 000000000<br>LEI: 529900YEXNDM894PWS93 | Long             | EC               | CORP              | IL        |     21987 | NS      | $8946070.56   | 0.84%             |  |  |  | No            |                  1 | On Loan: No      |
| Garmin Ltd                               | Garmin Ltd                               | CUSIP: 000000000<br>LEI: 2549001E0HIPIJQ0W046 | Long             | EC               | CORP              | CH        |     23159 | NS      | $4833746.48   | 0.45%             |  |  |  | No            |                  1 | On Loan: No      |
| Quanta Services Inc                      | Quanta Services Inc                      | CUSIP: 74762E102<br>LEI: SHVRXXEACT60MMH07S24 | Long             | EC               | CORP              | US        |     55565 | NS      | $21008015.20  | 1.97%             |  |  |  | No            |                  1 | On Loan: No      |
| Gartner Inc                              | Gartner Inc                              | CUSIP: 366651107<br>LEI: PP55B5R38BFB8O8HH686 | Long             | EC               | CORP              | US        |     37873 | NS      | $15309024.06  | 1.44%             |  |  |  | No            |                  1 | On Loan: No      |
| GoDaddy Inc                              | GoDaddy Inc                              | CUSIP: 380237107<br>LEI: 549300J8H1TB0I2CB447 | Long             | EC               | CORP              | US        |     52483 | NS      | $9450088.98   | 0.89%             |  |  |  | No            |                  1 | On Loan: No      |
| MongoDB Inc                              | MongoDB Inc                              | CUSIP: 60937P106<br>LEI: 549300TPTG69WKWE1Z37 | Long             | EC               | CORP              | US        |     30424 | NS      | $6388735.76   | 0.60%             |  |  |  | No            |                  1 | On Loan: No      |
| Ares Management Corp                     | Ares Management Corp                     | CUSIP: 03990B101<br>LEI: 529900JUV61FH7B8VW38 | Long             | EC               | CORP              | US        |    105993 | NS      | $18357987.60  | 1.72%             |  |  |  | No            |                  1 | On Loan: No      |
| Simpson Manufacturing Co Inc             | Simpson Manufacturing Co Inc             | CUSIP: 829073105<br>LEI: 529900EJUNNL15LZ8056 | Long             | EC               | CORP              | US        |     21434 | NS      | $3328914.54   | 0.31%             |  |  |  | No            |                  1 | On Loan: No      |
| Nutanix Inc                              | Nutanix Inc                              | CUSIP: 67059N108<br>LEI: 549300X7J6E8TKVIXW09 | Long             | EC               | CORP              | US        |    138455 | NS      | $10583500.20  | 0.99%             |  |  |  | No            |                  1 | On Loan: No      |
| Eagle Materials Inc                      | Eagle Materials Inc                      | CUSIP: 26969P108<br>LEI: 529900KRXRGXL61SG039 | Long             | EC               | CORP              | US        |     28734 | NS      | $5807428.74   | 0.55%             |  |  |  | No            |                  1 | On Loan: No      |
| Rambus Inc                               | Rambus Inc                               | CUSIP: 750917106<br>LEI: 2549000211GDCQSLV833 | Long             | EC               | CORP              | US        |     66138 | NS      | $4234154.76   | 0.40%             |  |  |  | No            |                  1 | On Loan: No      |
| Carlisle Cos Inc                         | Carlisle Cos Inc                         | CUSIP: 142339100<br>LEI: XR64VGX1ZPX6G7ZN7Z11 | Long             | EC               | CORP              | US        |     18589 | NS      | $6941132.60   | 0.65%             |  |  |  | No            |                  1 | On Loan: No      |
| DoorDash Inc                             | DoorDash Inc                             | CUSIP: 25809K105<br>LEI: 549300NUQ43FGGSK5051 | Long             | EC               | CORP              | US        |     48071 | NS      | $11849982.21  | 1.11%             |  |  |  | No            |                  1 | On Loan: No      |
| Rocket Lab Corp                          | Rocket Lab Corp                          | CUSIP: 773121108<br>LEI: N/A                  | Long             | EC               | CORP              | US        |    196536 | NS      | $7030092.72   | 0.66%             |  |  |  | No            |                  1 | On Loan: No      |
| MSA Safety Inc                           | MSA Safety Inc                           | CUSIP: 553498106<br>LEI: 529900DVA3258XK11O39 | Long             | EC               | CORP              | US        |     27600 | NS      | $4623828.00   | 0.43%             |  |  |  | No            |                  1 | On Loan: No      |
| Reddit Inc                               | Reddit Inc                               | CUSIP: 75734B100<br>LEI: N/A                  | Long             | EC               | CORP              | US        |     87004 | NS      | $13100192.28  | 1.23%             |  |  |  | No            |                  1 | On Loan: No      |
| Bright Horizons Family Solutions Inc     | Bright Horizons Family Solutions Inc     | CUSIP: 109194100<br>LEI: N/A                  | Long             | EC               | CORP              | US        |     66397 | NS      | $8206005.23   | 0.77%             |  |  |  | No            |                  1 | On Loan: No      |
| Nuvalent Inc                             | Nuvalent Inc                             | CUSIP: 670703107<br>LEI: N/A                  | Long             | EC               | CORP              | US        |     38608 | NS      | $2945790.40   | 0.28%             |  |  |  | No            |                  1 | On Loan: No      |
| TechnipFMC PLC                           | TechnipFMC PLC                           | CUSIP: 000000000<br>LEI: 549300D5I93QWCJTCK36 | Long             | EC               | CORP              | GB        |    191209 | NS      | $6585237.96   | 0.62%             |  |  |  | No            |                  1 | On Loan: No      |
| Ciena Corp                               | Ciena Corp                               | CUSIP: 171779309<br>LEI: W0CZ7N0GH8UIGXDM1H41 | Long             | EC               | CORP              | US        |     72294 | NS      | $5879671.02   | 0.55%             |  |  |  | No            |                  1 | On Loan: No      |
| FactSet Research Systems Inc             | FactSet Research Systems Inc             | CUSIP: 303075105<br>LEI: 549300ZSJE7NBK6K9P30 | Long             | EC               | CORP              | US        |     16457 | NS      | $7360886.96   | 0.69%             |  |  |  | No            |                  1 | On Loan: No      |
| Dexcom Inc                               | Dexcom Inc                               | CUSIP: 252131107<br>LEI: 549300YSK3QDSFR5EU59 | Long             | EC               | CORP              | US        |    159123 | NS      | $13889846.67  | 1.30%             |  |  |  | No            |                  1 | On Loan: No      |
| Snowflake Inc                            | Snowflake Inc                            | CUSIP: 833445109<br>LEI: 254900CJNSY1K7T53Z16 | Long             | EC               | CORP              | US        |     48288 | NS      | $10805405.76  | 1.01%             |  |  |  | No            |                  1 | On Loan: No      |
| ITT Inc                                  | ITT Inc                                  | CUSIP: 45073V108<br>LEI: 549300KDSERHTJOXUS80 | Long             | EC               | CORP              | US        |     65728 | NS      | $10308122.24  | 0.97%             |  |  |  | No            |                  1 | On Loan: No      |
| Edwards Lifesciences Corp                | Edwards Lifesciences Corp                | CUSIP: 28176E108<br>LEI: YA13X31F3V31L8TMPR58 | Long             | EC               | CORP              | US        |     47506 | NS      | $3715444.26   | 0.35%             |  |  |  | No            |                  1 | On Loan: No      |
| Gitlab Inc                               | Gitlab Inc                               | CUSIP: 37637K108<br>LEI: 9845004Y40FACG81ED49 | Long             | EC               | CORP              | US        |     58304 | NS      | $2630093.44   | 0.25%             |  |  |  | No            |                  1 | On Loan: No      |
| Rocket Cos Inc                           | Rocket Cos Inc                           | CUSIP: 77311W101<br>LEI: N/A                  | Long             | EC               | CORP              | US        |    437979 | NS      | $6210542.22   | 0.58%             |  |  |  | No            |                  1 | On Loan: No      |
| Esab Corp                                | Esab Corp                                | CUSIP: 29605J106<br>LEI: 549300ZNV0SWBXEIWT04 | Long             | EC               | CORP              | US        |     73156 | NS      | $8818955.80   | 0.83%             |  |  |  | No            |                  1 | On Loan: No      |
| LPL Financial Holdings Inc               | LPL Financial Holdings Inc               | CUSIP: 50212V100<br>LEI: 549300XROQ4Y8G2L7682 | Long             | EC               | CORP              | US        |     38962 | NS      | $14609581.14  | 1.37%             |  |  |  | No            |                  1 | On Loan: No      |
| Ultragenyx Pharmaceutical Inc            | Ultragenyx Pharmaceutical Inc            | CUSIP: 90400D108<br>LEI: 529900EV44GVDN1DCX77 | Long             | EC               | CORP              | US        |    104933 | NS      | $3815363.88   | 0.36%             |  |  |  | No            |                  1 | On Loan: No      |
| Insmed Inc                               | Insmed Inc                               | CUSIP: 457669307<br>LEI: 529900Q55QAG41CCAC11 | Long             | EC               | CORP              | US        |    138299 | NS      | $13918411.36  | 1.31%             |  |  |  | No            |                  1 | On Loan: No      |
| Datadog Inc                              | Datadog Inc                              | CUSIP: 23804L103<br>LEI: 549300F6JNO0KRPO1K63 | Long             | EC               | CORP              | US        |    125105 | NS      | $16805354.65  | 1.58%             |  |  |  | No            |                  1 | On Loan: No      |
| Ulta Beauty Inc                          | Ulta Beauty Inc                          | CUSIP: 90384S303<br>LEI: 529900CIV6HN8M28YM82 | Long             | EC               | CORP              | US        |     26084 | NS      | $12202616.88  | 1.15%             |  |  |  | No            |                  1 | On Loan: No      |
| Ingersoll Rand Inc                       | Ingersoll Rand Inc                       | CUSIP: 45687V106<br>LEI: 5299004C02FMZCUOIR50 | Long             | EC               | CORP              | US        |     56630 | NS      | $4710483.40   | 0.44%             |  |  |  | No            |                  1 | On Loan: No      |
| Monolithic Power Systems Inc             | Monolithic Power Systems Inc             | CUSIP: 609839105<br>LEI: 529900TB7O85LSZ1XU31 | Long             | EC               | CORP              | US        |     12055 | NS      | $8816785.90   | 0.83%             |  |  |  | No            |                  1 | On Loan: No      |
| Natera Inc                               | Natera Inc                               | CUSIP: 632307104<br>LEI: N/A                  | Long             | EC               | CORP              | US        |     88024 | NS      | $14870774.56  | 1.40%             |  |  |  | No            |                  1 | On Loan: No      |
| Neurocrine Biosciences Inc               | Neurocrine Biosciences Inc               | CUSIP: 64125C109<br>LEI: 549300FECER0XBN49756 | Long             | EC               | CORP              | US        |     95071 | NS      | $11949473.99  | 1.12%             |  |  |  | No            |                  1 | On Loan: No      |
| AutoZone Inc                             | AutoZone Inc                             | CUSIP: 053332102<br>LEI: GA3JGKJ41LJKXDN23E90 | Long             | EC               | CORP              | US        |      2438 | NS      | $9050416.74   | 0.85%             |  |  |  | No            |                  1 | On Loan: No      |
| ON Semiconductor Corp                    | ON Semiconductor Corp                    | CUSIP: 682189105<br>LEI: ZV20P4CNJVT8V1ZGJ064 | Long             | EC               | CORP              | US        |     82722 | NS      | $4335460.02   | 0.41%             |  |  |  | No            |                  1 | On Loan: No      |
| Copart Inc                               | Copart Inc                               | CUSIP: 217204106<br>LEI: 549300KVYX3JWMYEHU61 | Long             | EC               | CORP              | US        |    117658 | NS      | $5773478.06   | 0.54%             |  |  |  | No            |                  1 | On Loan: No      |
| McKesson Corp                            | McKesson Corp                            | CUSIP: 58155Q103<br>LEI: 549300WZWOM80UCFSF54 | Long             | EC               | CORP              | US        |     21809 | NS      | $15981199.02  | 1.50%             |  |  |  | No            |                  1 | On Loan: No      |
| ROBLOX Corp                              | ROBLOX Corp                              | CUSIP: 771049103<br>LEI: N/A                  | Long             | EC               | CORP              | US        |    196018 | NS      | $20621093.60  | 1.94%             |  |  |  | No            |                  1 | On Loan: No      |
| Twilio Inc                               | Twilio Inc                               | CUSIP: 90138F102<br>LEI: 5493004W8TRGD63APX93 | Long             | EC               | CORP              | US        |     69027 | NS      | $8584197.72   | 0.81%             |  |  |  | No            |                  1 | On Loan: No      |
| HEICO Corp                               | HEICO Corp                               | CUSIP: 422806208<br>LEI: 529900O1DTDLCJ7L0I14 | Long             | EC               | CORP              | US        |     76449 | NS      | $19781178.75  | 1.86%             |  |  |  | No            |                  1 | On Loan: No      |
| Jefferies Financial Group Inc            | Jefferies Financial Group Inc            | CUSIP: 47233W109<br>LEI: 549300HOF34RGOJ5YL07 | Long             | EC               | CORP              | US        |    124451 | NS      | $6806225.19   | 0.64%             |  |  |  | No            |                  1 | On Loan: No      |
| Howmet Aerospace Inc                     | Howmet Aerospace Inc                     | CUSIP: 443201108<br>LEI: 549300HO5WFZUT5N2T22 | Long             | EC               | CORP              | US        |    160165 | NS      | $29811511.45  | 2.80%             |  |  |  | No            |                  1 | On Loan: No      |
| AppLovin Corp                            | AppLovin Corp                            | CUSIP: 03831W108<br>LEI: 549300LLVXMUAOL3SQ07 | Long             | EC               | CORP              | US        |     13035 | NS      | $4563292.80   | 0.43%             |  |  |  | No            |                  1 | On Loan: No      |
| Mettler-Toledo International Inc         | Mettler-Toledo International Inc         | CUSIP: 592688105<br>LEI: 5493000BD5GJNUDIUG10 | Long             | EC               | CORP              | US        |      5202 | NS      | $6110893.44   | 0.57%             |  |  |  | No            |                  1 | On Loan: No      |
| TPG Inc                                  | TPG Inc                                  | CUSIP: 872657101<br>LEI: 549300NLO4R8MX77XJ02 | Long             | EC               | CORP              | US        |     74590 | NS      | $3912245.50   | 0.37%             |  |  |  | No            |                  1 | On Loan: No      |
| Alkermes PLC                             | Alkermes PLC                             | CUSIP: 000000000<br>LEI: N/A                  | Long             | EC               | CORP              | IE        |    112252 | NS      | $3211529.72   | 0.30%             |  |  |  | No            |                  1 | On Loan: No      |
| Performance Food Group Co                | Performance Food Group Co                | CUSIP: 71377A103<br>LEI: 549300EUK8GR9IT1YK57 | Long             | EC               | CORP              | US        |     81539 | NS      | $7132216.33   | 0.67%             |  |  |  | No            |                  1 | On Loan: No      |
| Thor Industries Inc                      | Thor Industries Inc                      | CUSIP: 885160101<br>LEI: 254900XZO1228PDSG060 | Long             | EC               | CORP              | US        |     52233 | NS      | $4638812.73   | 0.44%             |  |  |  | No            |                  1 | On Loan: No      |
| Flutter Entertainment PLC                | Flutter Entertainment PLC                | CUSIP: 000000000<br>LEI: 635400EG4YIJLJMZJ782 | Long             | EC               | CORP              | IE        |     93543 | NS      | $26730847.68  | 2.51%             |  |  |  | No            |                  1 | On Loan: No      |
| Arthur J Gallagher & Co                  | Arthur J Gallagher & Co                  | CUSIP: 363576109<br>LEI: 54930049QLLMPART6V29 | Long             | EC               | CORP              | US        |     22410 | NS      | $7173889.20   | 0.67%             |  |  |  | No            |                  1 | On Loan: No      |
| Westinghouse Air Brake Technologies Corp | Westinghouse Air Brake Technologies Corp | CUSIP: 929740108<br>LEI: 06BTX5UWZD0GQ5N5Y745 | Long             | EC               | CORP              | US        |     34437 | NS      | $7209385.95   | 0.68%             |  |  |  | No            |                  1 | On Loan: No      |
| AAON Inc                                 | AAON Inc                                 | CUSIP: 000360206<br>LEI: N/A                  | Long             | EC               | CORP              | US        |      2473 | NS      | $182383.75    | 0.02%             |  |  |  | No            |                  1 | On Loan: No      |
| Fair Isaac Corp                          | Fair Isaac Corp                          | CUSIP: 303250104<br>LEI: RI6HET5SJUEY30V1PS26 | Long             | EC               | CORP              | US        |      2619 | NS      | $4787427.24   | 0.45%             |  |  |  | No            |                  1 | On Loan: No      |
| Coinbase Global Inc                      | Coinbase Global Inc                      | CUSIP: 19260Q107<br>LEI: 5493004G3J2SC154DU06 | Long             | EC               | CORP              | US        |     21220 | NS      | $7437397.80   | 0.70%             |  |  |  | No            |                  1 | On Loan: No      |
| Floor & Decor Holdings Inc               | Floor & Decor Holdings Inc               | CUSIP: 339750101<br>LEI: 549300M5FR3N688XGQ36 | Long             | EC               | CORP              | US        |     45572 | NS      | $3461649.12   | 0.33%             |  |  |  | No            |                  1 | On Loan: No      |
| Confluent Inc                            | Confluent Inc                            | CUSIP: 20717M103<br>LEI: 254900MRZ83YWUV7SN74 | Long             | EC               | CORP              | US        |    279909 | NS      | $6978131.37   | 0.66%             |  |  |  | No            |                  1 | On Loan: No      |

### Signature

**Date Signed:** 2025-07-15

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

**Signature:** Linda Wisniewski

**Name of Signer:** Linda Wisniewski

**Title:** Controller and Chief Accounting Officer