N-MFP3 0000742212 XXXXXXXX 2025-06-30 Northwestern Mutual Series Fund, Inc. 0000742212 549300T1UBX7MDSNZA55 Government Money Market Portfolio 549300XTQ77FEJGLVS15 S000000048 1 N N 002-89971 Mason Street Advisors, LLC 801-60721 BlackRock Advisors, LLC 801-47710 PricewaterhouseCoopers LLP Milwaukee WI The Northwestern Mutual Life Insurance Company None N N Y Government N N 47 106 420241155.09 423527302.96 0.8200 0.8200 2025-06-02 415385013.81 418671546.59 0.8200 0.8200 2025-06-03 414888479.50 418175406.75 0.8200 0.8200 2025-06-04 410368318.80 413655630.46 0.8100 0.8200 2025-06-05 409718652.30 413006348.39 0.8100 0.8200 2025-06-06 413363743.64 416652600.31 0.8100 0.8200 2025-06-09 415125401.86 418414635.61 0.8200 0.8200 2025-06-10 416157986.49 420547601.87 0.8200 0.8200 2025-06-11 409657282.96 414253281.74 0.8100 0.8200 2025-06-12 410315356.92 415811740.02 0.8100 0.8200 2025-06-13 416127991.32 421625523.82 0.8200 0.8300 2025-06-16 417059115.87 421457031.71 0.8200 0.8200 2025-06-17 416823057.46 421015376.64 0.8100 0.8200 2025-06-18 409945585.42 413238672.49 0.8100 0.8200 2025-06-20 415784871.73 419079106.57 0.8100 0.8200 2025-06-23 418167478.38 418167478.38 0.8200 0.8200 2025-06-24 422631276.81 422631276.81 0.8100 0.8100 2025-06-25 417279504.27 426269457.34 0.8100 0.8300 2025-06-26 415360219.54 424350190.32 0.8100 0.8300 2025-06-27 418593011.34 433163469.83 0.8100 0.8400 2025-06-30 480444.70 513981729.86 513951008.25 3911836.33 10756028.52 507587260.76 507585844.3110 Y 1.0000 0.0436 2025-06-02 0.0437 2025-06-03 0.0436 2025-06-04 0.0436 2025-06-05 0.0436 2025-06-06 0.0435 2025-06-09 0.0434 2025-06-10 0.0434 2025-06-11 0.0434 2025-06-12 0.0434 2025-06-13 0.0434 2025-06-16 0.0434 2025-06-17 0.0434 2025-06-18 0.0433 2025-06-20 0.0433 2025-06-23 0.0433 2025-06-24 0.0433 2025-06-25 0.0434 2025-06-26 0.0434 2025-06-27 0.0437 2025-06-30 1.0000 2025-06-02 1.0000 2025-06-03 1.0000 2025-06-04 1.0000 2025-06-05 1.0001 2025-06-06 1.0000 2025-06-09 1.0000 2025-06-10 1.0000 2025-06-11 1.0000 2025-06-12 1.0001 2025-06-13 1.0000 2025-06-16 1.0000 2025-06-17 1.0000 2025-06-18 1.0001 2025-06-20 1.0000 2025-06-23 1.0000 2025-06-24 1.0000 2025-06-25 1.0000 2025-06-26 1.0001 2025-06-27 1.0001 2025-06-30 N N Underlying Fund C000000083 0.01 507587260.76 507585844.3110 1.0000 2025-06-02 1.0000 2025-06-03 1.0000 2025-06-04 1.0000 2025-06-05 1.0001 2025-06-06 1.0000 2025-06-09 1.0000 2025-06-10 1.0000 2025-06-11 1.0000 2025-06-12 1.0001 2025-06-13 1.0000 2025-06-16 1.0000 2025-06-17 1.0000 2025-06-18 1.0001 2025-06-20 1.0000 2025-06-23 1.0000 2025-06-24 1.0000 2025-06-25 1.0000 2025-06-26 1.0001 2025-06-27 1.0001 2025-06-30 698455.54 2405016.30 2025-06-02 1847914.55 1830749.96 2025-06-03 612223.55 1587948.16 2025-06-04 633743.45 563509.60 2025-06-05 529578.29 544465.32 2025-06-06 710290.22 2420884.94 2025-06-09 1165099.86 152621.78 2025-06-10 1353417.88 748746.98 2025-06-11 790718.63 59769.08 2025-06-12 1064603.53 1251929.69 2025-06-13 835583.55 880139.74 2025-06-16 1165583.30 1015024.13 2025-06-17 832529.71 1126223.67 2025-06-18 3531499.55 1828096.08 2025-06-20 471454.42 1275904.70 2025-06-23 1148165.25 525980.77 2025-06-24 1669531.64 1223043.99 2025-06-25 369000.96 1119293.35 2025-06-26 911265.60 731113.03 2025-06-27 3116016.34 855852.01 2025-06-30 23456675.82 22146313.28 0.0403 2025-06-02 0.0404 2025-06-03 0.0403 2025-06-04 0.0403 2025-06-05 0.0403 2025-06-06 0.0402 2025-06-09 0.0401 2025-06-10 0.0401 2025-06-11 0.0401 2025-06-12 0.0401 2025-06-13 0.0401 2025-06-16 0.0401 2025-06-17 0.0400 2025-06-18 0.0400 2025-06-20 0.0400 2025-06-23 0.0400 2025-06-24 0.0400 2025-06-25 0.0401 2025-06-26 0.0401 2025-06-27 0.0404 2025-06-30 Y 433.39 Insurance company 1.0000 1.0000 N US Treasury US Treasury 0.375 91282CAZ4 254900HROIFWPRGM1V77 US91282CAZ41 U.S. Treasury Debt Y 2025-11-30 2025-11-30 2025-11-30 N N N 0.0444 196787.11 196787.11 0.0004 N Y Y N Federal Farm Credit Bank Federal Farm Credit Bank 4.530 3133ERQ46 254900C5LP6DN9OP9V83 US3133ERQ466 U.S. Government Agency Debt (if categorized as coupon-paying notes) Y 2025-07-01 2026-12-30 2026-12-30 N N N 0.0453 299991.96 299991.96 0.0006 N N N N US Treasury US Treasury 0.000 912797QX8 254900HROIFWPRGM1V77 US912797QX89 U.S. Treasury Debt Y 2026-06-11 2026-06-11 2026-06-11 N N N 0.0412 3609045.15 3609045.15 0.0071 N Y Y N US Treasury US Treasury 0.000 912797QV2 254900HROIFWPRGM1V77 US912797QV24 U.S. Treasury Debt Y 2025-09-23 2025-09-23 2025-09-23 N N N 0.0435 6436190.02 6436190.02 0.0127 N Y Y N Federal Home Loan Bank Federal Home Loan Bank 0.000 313385LA2 2549001DPIFGXC1TOL40 US313385LA23 U.S. Government Agency Debt (if categorized as no-coupon discount notes) Y 2025-08-29 2025-08-29 2025-08-29 N N N 0.0426 5580472.69 5580472.69 0.0110 N N Y N US Treasury US Treasury 0.000 912797MS3 254900HROIFWPRGM1V77 US912797MS31 U.S. Treasury Debt Y 2025-10-02 2025-10-02 2025-10-02 N N N 0.0424 1366212.53 1366212.53 0.0027 N Y Y N Tri-Party Mitsubishi UFJ Tri-Party Mitsubishi UFJ 4.400 BYDM7EKS2 K5HU16E3LMSVCCJJJ255 U.S. Government Agency Repurchase Agreement, collateralized only by U.S. Government Agency securities, U.S. Treasuries, and cash Y N N Y Government National Mortgage Association 549300M8ZYFG0OCMTT87 BYDM7EKS2 2029-02-20 2053-05-20 2.000000 - 7.500000 N/A 28438286.00 25500000.00 Agency Mortgage-Backed Securities Y 2025-07-01 2025-07-01 2025-07-01 N N N 0.0440 25000000.00 25000000.00 0.0493 N Y Y N Federal Home Loan Bank Federal Home Loan Bank 4.395 3130B52Z0 2549001DPIFGXC1TOL40 US3130B52Z02 U.S. Government Agency Debt (if categorized as coupon-paying notes) Y 2025-07-01 2025-09-12 2025-09-12 N N N 0.0433 2634987.72 2634987.72 0.0052 N N N N Federal Home Loan Bank Federal Home Loan Bank 4.385 3130B53M8 2549001DPIFGXC1TOL40 US3130B53M89 U.S. Government Agency Debt (if categorized as coupon-paying notes) Y 2025-07-01 2025-07-21 2025-07-21 N N N 0.0382 924992.13 924992.13 0.0018 N N N N US Treasury US Treasury 4.444 91282CLT6 254900HROIFWPRGM1V77 US91282CLT61 U.S. Treasury Debt Y 2025-07-01 2026-10-31 2026-10-31 N N N 0.0444 8560294.20 8560294.20 0.0169 N Y Y N Federal Home Loan Bank Federal Home Loan Bank 4.405 3130B6E69 2549001DPIFGXC1TOL40 US3130B6E699 U.S. Government Agency Debt (if categorized as coupon-paying notes) Y 2025-07-01 2025-12-12 2025-12-12 N N N 0.0435 1200092.22 1200092.22 0.0024 N N N N Tri-Party Bank of Montreal Tri-Party Bank of Montreal 4.390 BYDM7EJ88 NQQ6HPCNCCU6TUTQYE16 U.S. Treasury Repurchase Agreement, if collateralized only by U.S. Treasuries (including Strips) and cash Y N N Y US Treasury 254900HROIFWPRGM1V77 BYDM7EJ88 2042-02-15 2043-05-15 2.875000 - 3.125000 N/A 26570176.00 20400075.02 U.S. Treasuries (including strips) Y 2025-07-01 2025-07-01 2025-07-01 N N N 0.0439 20000000.00 20000000.00 0.0394 N Y Y N Federal National Mortgage Association Federal National Mortgage Association 4.530 3135G07L1 B1V7KEBTPIMZEU4LTD58 US3135G07L12 U.S. Government Agency Debt (if categorized as coupon-paying notes) Y 2025-07-01 2026-10-23 2026-10-23 N N N 0.0461 1511416.18 1511416.18 0.0030 N N N N US Treasury US Treasury 0.000 912797RE9 254900HROIFWPRGM1V77 US912797RE99 U.S. Treasury Debt Y 2025-10-28 2025-10-28 2025-10-28 N N N 0.0431 3845871.12 3845871.12 0.0076 N Y Y N US Treasury US Treasury 0.000 912797QU4 254900HROIFWPRGM1V77 US912797QU41 U.S. Treasury Debt Y 2025-09-16 2025-09-16 2025-09-16 N N N 0.0436 2873669.22 2873669.22 0.0057 N Y Y N US Treasury US Treasury 0.000 912797PQ4 254900HROIFWPRGM1V77 US912797PQ48 U.S. Treasury Debt Y 2025-08-28 2025-08-28 2025-08-28 N N N 0.0432 993031.94 993031.94 0.0020 N Y Y N Federal Home Loan Bank Federal Home Loan Bank 4.400 3130B5YA0 2549001DPIFGXC1TOL40 US3130B5YA00 U.S. Government Agency Debt (if categorized as coupon-paying notes) Y 2025-07-01 2025-08-11 2025-08-11 N N N 0.0442 500005.80 500005.80 0.0010 N N N N Federal National Mortgage Association Federal National Mortgage Association 4.530 3135G1AB7 B1V7KEBTPIMZEU4LTD58 US3135G1AB74 U.S. Government Agency Debt (if categorized as coupon-paying notes) Y 2025-07-01 2026-12-11 2026-12-11 N N N 0.0460 1902206.86 1902206.86 0.0037 N N N N Federal National Mortgage Association Federal National Mortgage Association 4.525 3135G07J6 B1V7KEBTPIMZEU4LTD58 US3135G07J65 U.S. Government Agency Debt (if categorized as coupon-paying notes) Y 2025-07-01 2026-08-21 2026-08-21 N N N 0.0458 1451359.45 1451359.45 0.0029 N N N N US Treasury US Treasury 0.000 912797PV3 254900HROIFWPRGM1V77 US912797PV33 U.S. Treasury Debt Y 2026-03-19 2026-03-19 2026-03-19 N N N 0.0414 7968145.00 7968145.00 0.0157 N Y Y N US Treasury US Treasury 0.000 912797QP5 254900HROIFWPRGM1V77 US912797QP55 U.S. Treasury Debt Y 2025-11-06 2025-11-06 2025-11-06 N N N 0.0422 1322321.62 1322321.62 0.0026 N Y Y N Federal Home Loan Bank Federal Home Loan Bank 4.455 3130B5Q84 2549001DPIFGXC1TOL40 US3130B5Q844 U.S. Government Agency Debt (if categorized as coupon-paying notes) Y 2025-07-01 2027-03-25 2027-03-25 N N N 0.0450 1030000.05 1030000.05 0.0020 N N N N US Treasury US Treasury 0.000 912797QA8 254900HROIFWPRGM1V77 US912797QA86 U.S. Treasury Debt Y 2025-07-15 2025-07-15 2025-07-15 N N N 0.0429 998385.14 998385.14 0.0020 N Y Y N Federal Home Loan Bank Federal Home Loan Bank 4.395 3130B4GT2 2549001DPIFGXC1TOL40 US3130B4GT28 U.S. Government Agency Debt (if categorized as coupon-paying notes) Y 2025-07-01 2025-07-09 2025-07-09 N N N 0.0439 1299994.45 1299994.45 0.0026 N N N N US Treasury US Treasury 0.000 912797QS9 254900HROIFWPRGM1V77 US912797QS94 U.S. Treasury Debt Y 2025-12-04 2025-12-04 2025-12-04 N N N 0.0430 3541816.21 3541816.21 0.0070 N Y Y N US Treasury US Treasury 4.250 91282CJS1 254900HROIFWPRGM1V77 US91282CJS17 U.S. Treasury Debt Y 2025-12-31 2025-12-31 2025-12-31 N N N 0.0423 990009.68 990009.68 0.0020 N Y Y N US Treasury US Treasury 4.338 91282CMJ7 254900HROIFWPRGM1V77 US91282CMJ70 U.S. Treasury Debt Y 2025-07-01 2027-01-31 2027-01-31 N N N 0.0434 10395146.73 10395146.73 0.0205 N Y Y N US Treasury US Treasury 0.375 91282CBC4 254900HROIFWPRGM1V77 US91282CBC47 U.S. Treasury Debt Y 2025-12-31 2025-12-31 2025-12-31 N N N 0.0426 1118402.34 1118402.34 0.0022 N Y Y N Federal Home Loan Bank Federal Home Loan Bank 4.390 3130B6TK2 2549001DPIFGXC1TOL40 US3130B6TK20 U.S. Government Agency Debt (if categorized as coupon-paying notes) Y 2025-07-01 2025-12-26 2025-12-26 N N N 0.0439 1684995.59 1684995.59 0.0033 N N N N US Treasury US Treasury 4.422 91282CLA7 254900HROIFWPRGM1V77 US91282CLA70 U.S. Treasury Debt Y 2025-07-01 2026-07-31 2026-07-31 N N N 0.0447 4614635.72 4614635.72 0.0091 N Y Y N US Treasury US Treasury 0.000 912797QT7 254900HROIFWPRGM1V77 US912797QT77 U.S. Treasury Debt Y 2025-09-09 2025-09-09 2025-09-09 N N N 0.0432 15819881.26 15819881.26 0.0312 N Y Y N US Treasury US Treasury 0.000 912797QR1 254900HROIFWPRGM1V77 US912797QR12 U.S. Treasury Debt Y 2025-11-20 2025-11-20 2025-11-20 N N N 0.0429 6044674.40 6044674.40 0.0119 N Y Y N Federal Home Loan Bank Federal Home Loan Bank 4.390 3130B52Y3 2549001DPIFGXC1TOL40 US3130B52Y37 U.S. Government Agency Debt (if categorized as coupon-paying notes) Y 2025-07-01 2025-08-14 2025-08-14 N N N 0.0431 3159952.16 3159952.16 0.0062 N N N N US Treasury US Treasury 4.365 91282CHS3 254900HROIFWPRGM1V77 US91282CHS35 U.S. Treasury Debt Y 2025-07-01 2025-07-31 2025-07-31 N N N 0.0437 10739072.50 10739072.50 0.0212 N Y Y N US Treasury US Treasury 0.000 912797NA1 254900HROIFWPRGM1V77 US912797NA14 U.S. Treasury Debt Y 2025-10-30 2025-10-30 2025-10-30 N N N 0.0426 4988854.54 4988854.54 0.0098 N Y Y N Federal Home Loan Mortgage Corp. Federal Home Loan Mortgage Corp. 0.375 3137EAEX3 S6XOOCT0IEG5ABCC6L87 US3137EAEX33 U.S. Government Agency Debt (if categorized as coupon-paying notes) Y 2025-09-23 2025-09-23 2025-09-23 N N N 0.0424 1684510.59 1684510.59 0.0033 N N N N Federal Home Loan Bank Federal Home Loan Bank 4.380 3130B5B72 2549001DPIFGXC1TOL40 US3130B5B721 U.S. Government Agency Debt (if categorized as coupon-paying notes) Y 2026-03-23 2026-03-23 2026-03-23 N N N 0.0438 2197064.43 2197064.43 0.0043 N N N N Federal Home Loan Bank Federal Home Loan Bank 4.340 3130B5N87 2549001DPIFGXC1TOL40 US3130B5N874 U.S. Government Agency Debt (if categorized as coupon-paying notes) Y 2026-04-17 2026-04-17 2026-04-17 N N N 0.0434 3803605.07 3803605.07 0.0075 N N N N Federal Home Loan Bank Federal Home Loan Bank 4.390 3130B6VB9 2549001DPIFGXC1TOL40 US3130B6VB92 U.S. Government Agency Debt (if categorized as coupon-paying notes) Y 2025-07-01 2025-12-30 2025-12-30 N N N 0.0439 1739997.13 1739997.13 0.0034 N N N N Tri-Party BNP Paribas Tri-Party BNP Paribas 4.390 BYDM7EJ39 R0MUWSFPU8MPRO8K5P83 U.S. Government Agency Repurchase Agreement, collateralized only by U.S. Government Agency securities, U.S. Treasuries, and cash Y N N Y US Treasury 254900HROIFWPRGM1V77 BYDM7EJ39 2042-09-20 6.516000 N/A 19320.00 19798.88 U.S. Treasuries (including strips) Government National Mortgage Association 549300M8ZYFG0OCMTT87 BYDM7EJ39 2035-10-20 2055-04-20 2.000000 - 6.500000 N/A 10541788.00 10180201.17 Agency Mortgage-Backed Securities Y 2025-07-01 2025-07-01 2025-07-01 N N N 0.0439 10000000.00 10000000.00 0.0197 N Y Y N US Treasury US Treasury 0.000 912797QW0 254900HROIFWPRGM1V77 US912797QW07 U.S. Treasury Debt Y 2025-09-30 2025-09-30 2025-09-30 N N N 0.0434 3540782.99 3540782.99 0.0070 N Y Y N Tri-Party Mizuho Securities Tri-Party Mizuho Securities 4.400 BYDM7EKP8 7TK5RJIZDFROZCA6XF66 U.S. Treasury Repurchase Agreement, if collateralized only by U.S. Treasuries (including Strips) and cash Y N N Y US Treasury 254900HROIFWPRGM1V77 BYDM7EKP8 2026-07-31 2026-11-15 0.625000 - 4.375000 N/A 29462446.00 28560092.69 U.S. Treasuries (including strips) Y 2025-07-01 2025-07-01 2025-07-01 N N N 0.0440 28000000.00 28000000.00 0.0552 N Y Y N US Treasury US Treasury 0.000 912797NU7 254900HROIFWPRGM1V77 US912797NU77 U.S. Treasury Debt Y 2025-12-26 2025-12-26 2025-12-26 N N N 0.0426 8131330.14 8131330.14 0.0160 N Y Y N Federal Home Loan Bank Federal Home Loan Bank 4.400 3130B62Z8 2549001DPIFGXC1TOL40 US3130B62Z83 U.S. Government Agency Debt (if categorized as coupon-paying notes) Y 2025-07-01 2025-09-02 2025-09-02 N N N 0.0434 1299989.87 1299989.87 0.0026 N N N N Federal Farm Credit Bank Federal Farm Credit Bank 4.525 3133ERXN6 254900C5LP6DN9OP9V83 US3133ERXN60 U.S. Government Agency Debt (if categorized as coupon-paying notes) Y 2025-07-01 2026-10-15 2026-10-15 N N N 0.0453 4103627.48 4103627.48 0.0081 N N N N US Treasury US Treasury 1.625 912828R36 254900HROIFWPRGM1V77 US912828R366 U.S. Treasury Debt Y 2026-05-15 2026-05-15 2026-05-15 N N N 0.0404 783390.63 783390.63 0.0015 N Y Y N Federal National Mortgage Association Federal National Mortgage Association 4.530 3135G1AA9 B1V7KEBTPIMZEU4LTD58 US3135G1AA91 U.S. Government Agency Debt (if categorized as coupon-paying notes) Y 2025-07-01 2026-11-20 2026-11-20 N N N 0.0453 2002004.40 2002004.40 0.0039 N N N N US Treasury US Treasury 0.000 912797PE1 254900HROIFWPRGM1V77 US912797PE18 U.S. Treasury Debt Y 2025-07-17 2025-07-17 2025-07-17 N N N 0.0433 9981600.00 9981600.00 0.0197 N Y Y N Tri-Party Bank of Nova Scotia Tri-Party Bank of Nova Scotia 4.410 BYDM7EJM7 L3I9ZG2KFGXZ61BMYR72 U.S. Treasury Repurchase Agreement, if collateralized only by U.S. Treasuries (including Strips) and cash Y N N Y US Treasury 254900HROIFWPRGM1V77 BYDM7EJM7 2026-10-31 2051-11-15 1.125000 - 4.250000 N/A 21675618.00 20402517.76 U.S. Treasuries (including strips) Y 2025-07-01 2025-07-01 2025-07-01 N N N 0.0441 20000000.00 20000000.00 0.0394 N Y Y N Federal Home Loan Bank Federal Home Loan Bank 4.390 3130B5DQ8 2549001DPIFGXC1TOL40 US3130B5DQ80 U.S. Government Agency Debt (if categorized as coupon-paying notes) Y 2025-07-01 2025-08-29 2025-08-29 N N N 0.0439 4474937.71 4474937.71 0.0088 N N N N Federal Home Loan Bank Federal Home Loan Bank 4.395 3130B4FY2 2549001DPIFGXC1TOL40 US3130B4FY22 U.S. Government Agency Debt (if categorized as coupon-paying notes) Y 2025-07-01 2025-07-03 2025-07-03 N N N 0.0439 8989985.80 8989985.80 0.0177 N N Y N US Treasury US Treasury 0.000 912797QH3 254900HROIFWPRGM1V77 US912797QH30 U.S. Treasury Debt Y 2025-08-05 2025-08-05 2025-08-05 N N N 0.0432 18423469.02 18423469.02 0.0363 N Y Y N Federal Farm Credit Bank Federal Farm Credit Bank 4.505 3133ERXT3 254900C5LP6DN9OP9V83 US3133ERXT31 U.S. Government Agency Debt (if categorized as coupon-paying notes) Y 2025-07-01 2026-10-16 2026-10-16 N N N 0.0450 2204835.93 2204835.93 0.0043 N N N N US Treasury US Treasury 0.375 91282CBH3 254900HROIFWPRGM1V77 US91282CBH34 U.S. Treasury Debt Y 2026-01-31 2026-01-31 2026-01-31 N N N 0.0424 586787.11 586787.11 0.0012 N Y Y N US Treasury US Treasury 4.390 91282CKM2 254900HROIFWPRGM1V77 US91282CKM28 U.S. Treasury Debt Y 2025-07-01 2026-04-30 2026-04-30 N N N 0.0438 7304290.58 7304290.58 0.0144 N Y Y N Federal Home Loan Bank Federal Home Loan Bank 4.395 3130B4VH1 2549001DPIFGXC1TOL40 US3130B4VH15 U.S. Government Agency Debt (if categorized as coupon-paying notes) Y 2025-07-01 2025-08-05 2025-08-05 N N N 0.0439 5729913.42 5729913.42 0.0113 N N N N Federal Farm Credit Bank Federal Farm Credit Bank 4.490 3133ERHZ7 254900C5LP6DN9OP9V83 US3133ERHZ74 U.S. Government Agency Debt (if categorized as coupon-paying notes) Y 2025-07-01 2026-06-24 2026-06-24 N N N 0.0449 300157.01 300157.01 0.0006 N N N N Federal Farm Credit Bank Federal Farm Credit Bank 4.455 3133ETAU1 254900C5LP6DN9OP9V83 US3133ETAU17 U.S. Government Agency Debt (if categorized as coupon-paying notes) Y 2025-07-01 2027-03-26 2027-03-26 N N N 0.0446 469996.66 469996.66 0.0009 N N N N Federal Home Loan Bank Federal Home Loan Bank 4.400 3130B6TL0 2549001DPIFGXC1TOL40 US3130B6TL03 U.S. Government Agency Debt (if categorized as coupon-paying notes) Y 2025-07-01 2026-02-17 2026-02-17 N N N 0.0440 600000.63 600000.63 0.0012 N N N N Federal Home Loan Bank Federal Home Loan Bank 4.400 3130B5Y51 2549001DPIFGXC1TOL40 US3130B5Y517 U.S. Government Agency Debt (if categorized as coupon-paying notes) Y 2025-07-01 2025-08-12 2025-08-12 N N N 0.0433 800009.55 800009.55 0.0016 N N N N US Treasury US Treasury 0.000 912797RA7 254900HROIFWPRGM1V77 US912797RA77 U.S. Treasury Debt Y 2026-01-02 2026-01-02 2026-01-02 N N N 0.0426 4685029.39 4685029.39 0.0092 N Y Y N US Treasury US Treasury 4.625 91282CKB6 254900HROIFWPRGM1V77 US91282CKB62 U.S. Treasury Debt Y 2026-02-28 2026-02-28 2026-02-28 N N N 0.0412 401113.28 401113.28 0.0008 N Y Y N Federal Home Loan Bank Federal Home Loan Bank 4.350 3130B6BV7 2549001DPIFGXC1TOL40 US3130B6BV76 U.S. Government Agency Debt (if categorized as coupon-paying notes) Y 2026-06-05 2026-06-05 2026-06-05 N N N 0.0438 1896692.42 1896692.42 0.0037 N N N N Federal Home Loan Bank Federal Home Loan Bank 4.390 3130B5C97 2549001DPIFGXC1TOL40 US3130B5C976 U.S. Government Agency Debt (if categorized as coupon-paying notes) Y 2025-07-01 2025-08-21 2025-08-21 N N N 0.0431 609992.48 609992.48 0.0012 N N N N Federal Farm Credit Bank Federal Farm Credit Bank 4.490 3133ERJN2 254900C5LP6DN9OP9V83 US3133ERJN27 U.S. Government Agency Debt (if categorized as coupon-paying notes) Y 2025-07-01 2026-06-26 2026-06-26 N N N 0.0449 805351.55 805351.55 0.0016 N N N N US Treasury US Treasury 0.000 912797PY7 254900HROIFWPRGM1V77 US912797PY71 U.S. Treasury Debt Y 2025-09-25 2025-09-25 2025-09-25 N N N 0.0425 2716633.09 2716633.09 0.0054 N Y Y N US Treasury US Treasury 0.000 912797QY6 254900HROIFWPRGM1V77 US912797QY62 U.S. Treasury Debt Y 2025-12-11 2025-12-11 2025-12-11 N N N 0.0430 3729285.15 3729285.15 0.0073 N Y Y N US Treasury US Treasury 0.000 912797QJ9 254900HROIFWPRGM1V77 US912797QJ95 U.S. Treasury Debt Y 2025-08-12 2025-08-12 2025-08-12 N N N 0.0437 9402571.90 9402571.90 0.0185 N Y Y N US Treasury US Treasury 0.875 91282CCJ8 254900HROIFWPRGM1V77 US91282CCJ80 U.S. Treasury Debt Y 2026-06-30 2026-06-30 2026-06-30 N N N 0.0416 232696.88 232696.88 0.0005 N Y Y N Tri-Party TD Securities Tri-Party TD Securities 4.410 BYDM7EL28 SUVUFHICNZMP2WKHG940 U.S. Government Agency Repurchase Agreement, collateralized only by U.S. Government Agency securities, U.S. Treasuries, and cash Y N N Y Federal National Mortgage Association B1V7KEBTPIMZEU4LTD58 BYDM7EL28 2050-08-01 3.000000 N/A 9753005.00 8685499.92 Agency Mortgage-Backed Securities Federal Home Loan Mortgage Corp. S6XOOCT0IEG5ABCC6L87 BYDM7EL28 2052-08-01 5.000000 N/A 12061335.00 11914500.17 Agency Mortgage-Backed Securities Y 2025-07-01 2025-07-01 2025-07-01 N N N 0.0441 20000000.00 20000000.00 0.0394 N Y Y N US Treasury US Treasury 0.000 912797QZ3 254900HROIFWPRGM1V77 US912797QZ38 U.S. Treasury Debt Y 2025-12-18 2025-12-18 2025-12-18 N N N 0.0430 5981285.10 5981285.10 0.0118 N Y Y N US Treasury US Treasury 0.000 912797MH7 254900HROIFWPRGM1V77 US912797MH75 U.S. Treasury Debt Y 2025-09-04 2025-09-04 2025-09-04 N N N 0.0427 10518492.26 10518492.26 0.0207 N Y Y N Federal Home Loan Bank Federal Home Loan Bank 4.390 3130B6SM9 2549001DPIFGXC1TOL40 US3130B6SM94 U.S. Government Agency Debt (if categorized as coupon-paying notes) Y 2025-07-01 2025-12-19 2025-12-19 N N N 0.0439 719997.85 719997.85 0.0014 N N N N US Treasury US Treasury 0.000 912797NL7 254900HROIFWPRGM1V77 US912797NL78 U.S. Treasury Debt Y 2025-11-28 2025-11-28 2025-11-28 N N N 0.0432 3341548.33 3341548.33 0.0066 N Y Y N Federal Home Loan Mortgage Corp. Federal Home Loan Mortgage Corp. 4.505 3134HBPD7 S6XOOCT0IEG5ABCC6L87 US3134HBPD74 U.S. Government Agency Debt (if categorized as coupon-paying notes) Y 2025-07-01 2027-05-05 2027-05-05 N N N 0.0455 799992.75 799992.75 0.0016 N N N N Federal Home Loan Bank Federal Home Loan Bank 4.400 3130B63F1 2549001DPIFGXC1TOL40 US3130B63F11 U.S. Government Agency Debt (if categorized as coupon-paying notes) Y 2025-07-01 2025-08-26 2025-08-26 N N N 0.0434 899992.82 899992.82 0.0018 N N N N US Treasury US Treasury 4.410 91282CJD4 254900HROIFWPRGM1V77 US91282CJD48 U.S. Treasury Debt Y 2025-07-01 2025-10-31 2025-10-31 N N N 0.0443 7133589.69 7133589.69 0.0141 N Y Y N Federal Home Loan Bank Federal Home Loan Bank 4.395 3130B6AK2 2549001DPIFGXC1TOL40 US3130B6AK21 U.S. Government Agency Debt (if categorized as coupon-paying notes) Y 2025-07-01 2025-09-03 2025-09-03 N N N 0.0439 699995.21 699995.21 0.0014 N N N N Federal Home Loan Mortgage Corp. Federal Home Loan Mortgage Corp. 4.530 3134HAMW0 S6XOOCT0IEG5ABCC6L87 US3134HAMW00 U.S. Government Agency Debt (if categorized as coupon-paying notes) Y 2025-07-01 2026-09-23 2026-09-23 N N N 0.0463 1301336.04 1301336.04 0.0026 N N N N Tri-Party Citigroup Global Markets, Inc. Tri-Party Citigroup Global Markets, Inc. 4.390 BYDM7EJ70 MBNUM2BPBDO7JBLYG310 U.S. Treasury Repurchase Agreement, if collateralized only by U.S. Treasuries (including Strips) and cash Y N N Y US Treasury 254900HROIFWPRGM1V77 BYDM7EJ70 2026-10-31 4.125000 N/A 15261282.00 15300045.27 U.S. Treasuries (including strips) Y 2025-07-01 2025-07-01 2025-07-01 N N N 0.0439 15000000.00 15000000.00 0.0296 N Y Y N Federal Farm Credit Bank Federal Farm Credit Bank 4.460 3133ERES6 254900C5LP6DN9OP9V83 US3133ERES68 U.S. Government Agency Debt (if categorized as coupon-paying notes) Y 2025-07-01 2025-11-17 2025-11-17 N N N 0.0446 800245.12 800245.12 0.0016 N N N N US Treasury US Treasury 0.000 912797QG5 254900HROIFWPRGM1V77 US912797QG56 U.S. Treasury Debt Y 2025-10-23 2025-10-23 2025-10-23 N N N 0.0425 592043.27 592043.27 0.0012 N Y Y N US Treasury US Treasury 0.500 91282CBQ3 254900HROIFWPRGM1V77 US91282CBQ33 U.S. Treasury Debt Y 2026-02-28 2026-02-28 2026-02-28 N N N 0.0411 292804.69 292804.69 0.0006 N Y Y N Federal Farm Credit Bank Federal Farm Credit Bank 4.375 3133ETNT0 254900C5LP6DN9OP9V83 US3133ETNT07 U.S. Government Agency Debt (if categorized as coupon-paying notes) Y 2025-07-01 2027-02-01 2027-02-01 N N N 0.0452 1200352.34 1200352.34 0.0024 N N N N Federal Home Loan Bank Federal Home Loan Bank 4.125 3130B6DC7 2549001DPIFGXC1TOL40 US3130B6DC77 U.S. Government Agency Debt (if categorized as coupon-paying notes) Y 2025-11-07 2025-11-07 2025-11-07 N N N 0.0430 1199163.82 1199163.82 0.0024 N N N N Tri-Party BNP Paribas Tri-Party BNP Paribas 4.400 BYDM7EJ96 R0MUWSFPU8MPRO8K5P83 U.S. Treasury Repurchase Agreement, if collateralized only by U.S. Treasuries (including Strips) and cash Y N N Y US Treasury 254900HROIFWPRGM1V77 BYDM7EJ96 2025-08-07 2052-08-15 0.000000 - 4.750000 N/A 17372507.00 10200000.01 U.S. Treasuries (including strips) Y 2025-07-01 2025-07-01 2025-07-01 N N N 0.0440 10000000.00 10000000.00 0.0197 N Y Y N Federal Home Loan Bank Federal Home Loan Bank 4.490 3130B1TL1 2549001DPIFGXC1TOL40 US3130B1TL16 U.S. Government Agency Debt (if categorized as coupon-paying notes) Y 2025-07-01 2026-06-26 2026-06-26 N N N 0.0449 2230971.03 2230971.03 0.0044 N N N N Federal Home Loan Bank Federal Home Loan Bank 4.390 3130B6T71 2549001DPIFGXC1TOL40 US3130B6T713 U.S. Government Agency Debt (if categorized as coupon-paying notes) Y 2025-07-01 2025-12-18 2025-12-18 N N N 0.0439 609996.99 609996.99 0.0012 N N N N Tri-Party Natixis S.A. Tri-Party Natixis S.A. 4.390 BYDM7EKW3 549300L8G1E7ZHVEOG75 U.S. Treasury Repurchase Agreement, if collateralized only by U.S. Treasuries (including Strips) and cash Y N N Y US Treasury 254900HROIFWPRGM1V77 BYDM7EKW3 2025-09-23 2026-11-30 0.000000 - 1.250000 N/A 26452786.00 25500091.42 U.S. Treasuries (including strips) Y 2025-07-01 2025-07-01 2025-07-01 N N N 0.0439 25000000.00 25000000.00 0.0493 N Y Y N Federal Home Loan Bank Federal Home Loan Bank 4.550 3130AWNJ5 2549001DPIFGXC1TOL40 US3130AWNJ50 U.S. Government Agency Debt (if categorized as coupon-paying notes) Y 2025-07-01 2025-07-21 2025-07-21 N N N 0.0455 4330349.38 4330349.38 0.0085 N N N N US Treasury US Treasury 0.000 912797PX9 254900HROIFWPRGM1V77 US912797PX98 U.S. Treasury Debt Y 2025-09-18 2025-09-18 2025-09-18 N N N 0.0424 980835.31 980835.31 0.0019 N Y Y N US Treasury US Treasury 0.000 912797QN0 254900HROIFWPRGM1V77 US912797QN08 U.S. Treasury Debt Y 2026-05-14 2026-05-14 2026-05-14 N N N 0.0411 4114693.39 4114693.39 0.0081 N Y Y N US Treasury US Treasury 4.625 91282CKY6 254900HROIFWPRGM1V77 US91282CKY65 U.S. Treasury Debt Y 2026-06-30 2026-06-30 2026-06-30 N N N 0.0415 1770312.50 1770312.50 0.0035 N Y Y N US Treasury US Treasury 0.000 912797LW5 254900HROIFWPRGM1V77 US912797LW51 U.S. Treasury Debt Y 2025-07-10 2025-07-10 2025-07-10 N N N 0.0502 3995808.32 3995808.32 0.0079 N Y Y N Federal Home Loan Bank Federal Home Loan Bank 0.000 313385PY6 2549001DPIFGXC1TOL40 US313385PY62 U.S. Government Agency Debt (if categorized as no-coupon discount notes) Y 2025-12-01 2025-12-01 2025-12-01 N N N 0.0406 3931298.88 3931298.88 0.0077 N N N N Federal Farm Credit Bank Federal Farm Credit Bank 4.525 3133ERP21 254900C5LP6DN9OP9V83 US3133ERP211 U.S. Government Agency Debt (if categorized as coupon-paying notes) Y 2025-07-01 2026-12-23 2026-12-23 N N N 0.0453 399989.01 399989.01 0.0008 N N N N Federal Home Loan Bank Federal Home Loan Bank 4.390 3130B6SX5 2549001DPIFGXC1TOL40 US3130B6SX59 U.S. Government Agency Debt (if categorized as coupon-paying notes) Y 2025-07-01 2025-12-22 2025-12-22 N N N 0.0439 244999.20 244999.20 0.0005 N N N N Federal Home Loan Bank Federal Home Loan Bank 4.250 3130B62T2 2549001DPIFGXC1TOL40 US3130B62T24 U.S. Government Agency Debt (if categorized as coupon-paying notes) Y 2026-05-22 2026-05-22 2026-05-22 N N N 0.0429 3497353.02 3497353.02 0.0069 N N N N Tri-Party Goldman Sachs Group LP Tri-Party Goldman Sachs Group LP 4.400 BYDM7EKC7 FOR8UP27PHTHYVLBNG30 U.S. Government Agency Repurchase Agreement, collateralized only by U.S. Government Agency securities, U.S. Treasuries, and cash Y N N Y Government National Mortgage Association 549300M8ZYFG0OCMTT87 BYDM7EKC7 2052-04-20 2066-07-15 1.000000 - 6.000000 N/A 15151152.00 15300000.37 Agency Mortgage-Backed Securities Y 2025-07-01 2025-07-01 2025-07-01 N N N 0.0440 15000000.00 15000000.00 0.0296 N Y Y N US Treasury US Treasury 0.000 912797QL4 254900HROIFWPRGM1V77 US912797QL42 U.S. Treasury Debt Y 2025-08-26 2025-08-26 2025-08-26 N N N 0.0433 5225646.08 5225646.08 0.0103 N Y Y N Federal Home Loan Bank Federal Home Loan Bank 4.390 3130B6UT1 2549001DPIFGXC1TOL40 US3130B6UT10 U.S. Government Agency Debt (if categorized as coupon-paying notes) Y 2025-07-01 2025-12-24 2025-12-24 N N N 0.0439 1194998.28 1194998.28 0.0024 N N N N Federal Home Loan Bank Federal Home Loan Bank 4.385 3130B6MX1 2549001DPIFGXC1TOL40 US3130B6MX14 U.S. Government Agency Debt (if categorized as coupon-paying notes) Y 2025-07-01 2025-10-06 2025-10-06 N N N 0.0430 600005.24 600005.24 0.0012 N N N N Federal National Mortgage Association Federal National Mortgage Association 4.510 3135G07H0 B1V7KEBTPIMZEU4LTD58 US3135G07H00 U.S. Government Agency Debt (if categorized as coupon-paying notes) Y 2025-07-01 2026-07-29 2026-07-29 N N N 0.0451 4312937.40 4312937.40 0.0085 N N N N US Treasury US Treasury 0.000 912797QM2 254900HROIFWPRGM1V77 US912797QM25 U.S. Treasury Debt Y 2025-09-02 2025-09-02 2025-09-02 N N N 0.0431 9826130.56 9826130.56 0.0194 N Y Y N Tri-Party Citigroup Global Markets, Inc. Tri-Party Citigroup Global Markets, Inc. 4.400 BYDM7EJ62 MBNUM2BPBDO7JBLYG310 U.S. Treasury Repurchase Agreement, if collateralized only by U.S. Treasuries (including Strips) and cash Y N N Y US Treasury 254900HROIFWPRGM1V77 BYDM7EJ62 2027-04-30 2027-07-15 2.750000 - 4.500000 N/A 10084232.00 10200045.27 U.S. Treasuries (including strips) Y 2025-07-01 2025-07-01 2025-07-01 N N N 0.0440 10000000.00 10000000.00 0.0197 N Y Y N Northwestern Mutual Series Fund, Inc. 2025-07-07 /s/Linda Wisniewski Linda Wisniewski Controller and Chief Accounting Officer