N-MFP3 0001107414 XXXXXXXX 2026-07-31 STATE STREET INSTITUTIONAL INVESTMENT TRUST 0001107414 549300P1E098W6ES7M39 State Street Federal Government Money Market Fund 98450099C3D5363FC713 S000086383 1 N N 333-30810 SSGA Funds Management, Inc. 801-60103 Ernst & Young LLP Boston MA SSGA Funds Management, Inc. SS&C GIDS, Inc. 0000027048 084-00448 Y 0001094885 U.S. Government Money Market Portfolio S000010686 N N Government N N 1 1 190067603591.76 190162604448.66 0.8407 0.8411 2026-07-01 182899959931.62 182994960294.52 0.8352 0.8357 2026-07-02 195843351099.12 196713351339.47 0.8445 0.8483 2026-07-06 194354001191.74 195224001311.44 0.8426 0.8464 2026-07-07 191933244472.64 192708244472.64 0.8410 0.8444 2026-07-08 198548537737.23 199323537737.23 0.8454 0.8487 2026-07-09 193261689583.06 193621689583.06 0.8445 0.8461 2026-07-10 190032836234.66 191167836234.66 0.8388 0.8438 2026-07-13 188460638072.63 189690538802.41 0.8377 0.8432 2026-07-14 188985816650.53 190215717255.99 0.8380 0.8435 2026-07-15 187724441927.41 188594342408.55 0.8383 0.8421 2026-07-16 184059527367.20 184254428200.77 0.8377 0.8386 2026-07-17 181495335962.40 184058410085.18 0.8321 0.8439 2026-07-20 174882257478.06 176597767722.78 0.8269 0.8350 2026-07-21 173891092159.86 176143399707.16 0.8237 0.8344 2026-07-22 175668630161.65 178511000604.62 0.8247 0.8380 2026-07-23 175510636312.89 177500943797.35 0.8277 0.8371 2026-07-24 176808079577.32 179938424871.09 0.8233 0.8379 2026-07-27 171981258781.75 174574914956.49 0.8172 0.8296 2026-07-28 180060642316.19 180973093661.47 0.8314 0.8357 2026-07-29 175922773895.39 178890061958.37 0.8194 0.8332 2026-07-30 182262070726.75 186239826146.82 0.8201 0.8380 2026-07-31 0.00 195528780.03 195528780.03 0.00 766418.04 194762361.99 194762054.2710 Y 1.0000 0.0370 2026-07-01 0.0371 2026-07-02 0.0371 2026-07-06 0.0370 2026-07-07 0.0370 2026-07-08 0.0369 2026-07-09 0.0367 2026-07-10 0.0367 2026-07-13 0.0367 2026-07-14 0.0367 2026-07-15 0.0368 2026-07-16 0.0370 2026-07-17 0.0369 2026-07-20 0.0369 2026-07-21 0.0369 2026-07-22 0.0369 2026-07-23 0.0371 2026-07-24 0.0371 2026-07-27 0.0372 2026-07-28 0.0372 2026-07-29 0.0372 2026-07-30 0.0373 2026-07-31 0.9998 2026-07-01 0.9999 2026-07-02 0.9999 2026-07-06 0.9999 2026-07-07 0.9999 2026-07-08 0.9999 2026-07-09 0.9999 2026-07-10 0.9998 2026-07-13 0.9999 2026-07-14 0.9999 2026-07-15 0.9999 2026-07-16 0.9999 2026-07-17 0.9999 2026-07-20 0.9999 2026-07-21 0.9998 2026-07-22 0.9998 2026-07-23 0.9998 2026-07-24 0.9998 2026-07-27 0.9998 2026-07-28 0.9999 2026-07-29 0.9999 2026-07-30 0.9999 2026-07-31 N N Advantage Class C000251886 1000000.00 194762361.99 194762054.2710 0.9998 2026-07-01 0.9999 2026-07-02 0.9999 2026-07-06 0.9999 2026-07-07 0.9999 2026-07-08 0.9999 2026-07-09 0.9999 2026-07-10 0.9998 2026-07-13 0.9999 2026-07-14 0.9999 2026-07-15 0.9999 2026-07-16 0.9999 2026-07-17 0.9999 2026-07-20 0.9999 2026-07-21 0.9998 2026-07-22 0.9998 2026-07-23 0.9998 2026-07-24 0.9998 2026-07-27 0.9998 2026-07-28 0.9999 2026-07-29 0.9999 2026-07-30 0.9999 2026-07-31 1469001.80 303335.33 2026-07-01 455419.43 423096.64 2026-07-02 353114.91 379775.67 2026-07-06 2229221.35 510230.44 2026-07-07 2401170.89 547573.53 2026-07-08 105950.00 119566.48 2026-07-09 1696570.69 157258.42 2026-07-10 91800.00 521106.99 2026-07-13 590534.41 769962.17 2026-07-14 1818120.56 533776.78 2026-07-15 1018355.50 456247.05 2026-07-16 423136.30 278879.60 2026-07-17 634645.46 250152.78 2026-07-20 140500.00 717306.62 2026-07-21 123000.00 1423047.92 2026-07-22 672700.00 1134689.65 2026-07-23 1130591.29 430716.07 2026-07-24 355052.50 279355.15 2026-07-27 452821.78 862477.99 2026-07-28 394150.00 857315.95 2026-07-29 251590.00 1199468.39 2026-07-30 178242.50 374055.02 2026-07-31 16985689.37 12529394.64 0.0331 2026-07-01 0.0332 2026-07-02 0.0332 2026-07-06 0.0331 2026-07-07 0.0331 2026-07-08 0.0330 2026-07-09 0.0328 2026-07-10 0.0328 2026-07-13 0.0328 2026-07-14 0.0328 2026-07-15 0.0329 2026-07-16 0.0331 2026-07-17 0.0330 2026-07-20 0.0330 2026-07-21 0.0330 2026-07-22 0.0330 2026-07-23 0.0332 2026-07-24 0.0332 2026-07-27 0.0333 2026-07-28 0.0333 2026-07-29 0.0333 2026-07-30 0.0334 2026-07-31 Y 8972.00 Broker-dealer 0.9994 0.00 N State Street U.S. Government Money Market Portfolio State Street U.S. Government Money Market Portfolio FSSgAK1AV 549300EG2J8MKJKUK458 0001094885 FSSgAK1AV Investment Company Y 2026-08-03 2026-08-03 2026-08-03 N N N 0.0000 195528780.03 195528780.03 1.0000 N Y Y N STATE STREET INSTITUTIONAL INVESTMENT TRUST 2026-08-07 /s/ Chad Hallett Chad Hallett Deputy Treasurer