N-MFP3 0000889512 XXXXXXXX 2026-08-31 Legg Mason Partners Institutional Trust 0000889512 54930003LJE4ZPPMRV82 Western Asset Premier Institutional U.S. Treasury Reserves 549300FS1J68EF5THY28 S000066841 2 N N 033-49552 Franklin Templeton Fund Adviser LLC 801-66785 Western Asset Management Company 801-08162 PricewaterhouseCoopers LLP Baltimore MD BNY Mellon Investment Servicing (US) Inc. 0000849542 084-01761 Y 0001140869 U.S. Treasury Reserves Portfolio S000018042 N N Government N N 6 6 22539431883.17 22539431883.17 0.2500 0.5000 2026-08-03 20391555201.97 20391555201.97 0.2500 0.5000 2026-08-04 20170377879.62 20170377879.62 0.2500 0.5000 2026-08-05 20040655611.20 20040655611.20 0.2500 0.5000 2026-08-06 19901190388.61 19901190388.61 0.2500 0.5000 2026-08-07 20281339159.47 20281339159.47 0.2500 0.5000 2026-08-10 20066464723.66 20066464723.66 0.2500 0.5000 2026-08-11 20867241240.47 20867241240.47 0.2500 0.5000 2026-08-12 20727200409.01 20727200409.01 0.2500 0.5000 2026-08-13 21470334998.85 21470334998.85 0.2500 0.5000 2026-08-14 21636049665.57 21636049665.57 0.2500 0.5000 2026-08-17 21571891302.68 21571891302.68 0.2500 0.5000 2026-08-18 21181136458.59 21181136458.59 0.2500 0.5000 2026-08-19 21125182268.79 21125182268.79 0.2500 0.5000 2026-08-20 20618452811.11 20618452811.11 0.2500 0.5000 2026-08-21 20883760192.16 20883760192.16 0.2500 0.5000 2026-08-24 20421496122.66 20421496122.66 0.2500 0.5000 2026-08-25 20452721369.30 20452721369.30 0.2500 0.5000 2026-08-26 20293892244.11 20293892244.11 0.2500 0.5000 2026-08-27 19804992078.73 19804992078.73 0.2500 0.5000 2026-08-28 20542853016.37 20542853016.37 0.2500 0.5000 2026-08-31 0.00 2687546436.69 0.00 27173.91 8791523.59 2678782087.01 2678822015.3400 Y 1.0000 0.0378 2026-08-03 0.0378 2026-08-04 0.0378 2026-08-05 0.0378 2026-08-06 0.0377 2026-08-07 0.0377 2026-08-10 0.0377 2026-08-11 0.0377 2026-08-12 0.0377 2026-08-13 0.0377 2026-08-14 0.0377 2026-08-17 0.0377 2026-08-18 0.0377 2026-08-19 0.0377 2026-08-20 0.0378 2026-08-21 0.0378 2026-08-24 0.0378 2026-08-25 0.0378 2026-08-26 0.0378 2026-08-27 0.0378 2026-08-28 0.0379 2026-08-31 1.0000 2026-08-03 1.0000 2026-08-04 1.0000 2026-08-05 1.0000 2026-08-06 1.0000 2026-08-07 1.0000 2026-08-10 1.0000 2026-08-11 1.0000 2026-08-12 1.0000 2026-08-13 1.0000 2026-08-14 1.0000 2026-08-17 1.0000 2026-08-18 1.0000 2026-08-19 1.0000 2026-08-20 1.0000 2026-08-21 1.0000 2026-08-24 1.0000 2026-08-25 1.0000 2026-08-26 1.0000 2026-08-27 1.0000 2026-08-28 1.0000 2026-08-31 N N PC C000215196 1.00 2647471393.11 2647510726.7200 1.0000 2026-08-03 1.0000 2026-08-04 1.0000 2026-08-05 1.0000 2026-08-06 1.0000 2026-08-07 1.0000 2026-08-10 1.0000 2026-08-11 1.0000 2026-08-12 1.0000 2026-08-13 1.0000 2026-08-14 1.0000 2026-08-17 1.0000 2026-08-18 1.0000 2026-08-19 1.0000 2026-08-20 1.0000 2026-08-21 1.0000 2026-08-24 1.0000 2026-08-25 1.0000 2026-08-26 1.0000 2026-08-27 1.0000 2026-08-28 1.0000 2026-08-31 1777907.21 83699514.93 2026-08-03 17173000.00 14419380.06 2026-08-04 0.00 28716908.03 2026-08-05 69908280.35 806132.99 2026-08-06 82933.47 1604965.24 2026-08-07 33202918.67 0.00 2026-08-10 0.00 15941776.59 2026-08-11 200000000.00 326300.41 2026-08-12 0.00 56877267.02 2026-08-13 400000000.00 32001407.89 2026-08-14 11228169.68 0.00 2026-08-17 109720835.69 0.00 2026-08-18 0.00 105298917.26 2026-08-19 14599.00 36721264.12 2026-08-20 4599159.30 317843512.16 2026-08-21 5000000.00 5497969.82 2026-08-24 65472797.90 0.00 2026-08-25 6583612.91 4299159.30 2026-08-26 0.00 106969863.21 2026-08-27 1168000.00 60112700.29 2026-08-28 600000.00 16595327.33 2026-08-31 926532214.18 887732366.65 0.0364 2026-08-03 0.0364 2026-08-04 0.0364 2026-08-05 0.0364 2026-08-06 0.0363 2026-08-07 0.0363 2026-08-10 0.0363 2026-08-11 0.0363 2026-08-12 0.0363 2026-08-13 0.0363 2026-08-14 0.0363 2026-08-17 0.0363 2026-08-18 0.0363 2026-08-19 0.0363 2026-08-20 0.0364 2026-08-21 0.0364 2026-08-24 0.0364 2026-08-25 0.0364 2026-08-26 0.0364 2026-08-27 0.0364 2026-08-28 0.0365 2026-08-31 Y 467772.84 Non-financial corporation 0.0945 0.00 Non-financial corporation 0.3158 0.00 Insurance company 0.166 0.00 Non-financial corporation 0.1886 0.00 Retail investor 0.1717 0.00 N CC C000215197 200000000.00 31310693.90 31311288.6200 1.0000 2026-08-03 1.0000 2026-08-04 1.0000 2026-08-05 1.0000 2026-08-06 1.0000 2026-08-07 1.0000 2026-08-10 1.0000 2026-08-11 1.0000 2026-08-12 1.0000 2026-08-13 1.0000 2026-08-14 1.0000 2026-08-17 1.0000 2026-08-18 1.0000 2026-08-19 1.0000 2026-08-20 1.0000 2026-08-21 1.0000 2026-08-24 1.0000 2026-08-25 1.0000 2026-08-26 1.0000 2026-08-27 1.0000 2026-08-28 1.0000 2026-08-31 134798.04 0.00 2026-08-03 0.00 0.00 2026-08-04 0.00 0.00 2026-08-05 0.00 60000.00 2026-08-06 0.00 0.00 2026-08-07 0.00 0.00 2026-08-10 3000000.00 0.00 2026-08-11 0.00 0.00 2026-08-12 0.00 0.00 2026-08-13 0.00 0.00 2026-08-14 0.00 0.00 2026-08-17 0.00 0.00 2026-08-18 0.00 5000000.00 2026-08-19 0.00 0.00 2026-08-20 0.00 0.00 2026-08-21 0.00 0.00 2026-08-24 0.00 10000000.00 2026-08-25 0.00 0.00 2026-08-26 0.00 0.00 2026-08-27 0.00 0.00 2026-08-28 0.00 0.00 2026-08-31 3134798.04 15060000.00 0.0366 2026-08-03 0.0366 2026-08-04 0.0366 2026-08-05 0.0366 2026-08-06 0.0365 2026-08-07 0.0365 2026-08-10 0.0365 2026-08-11 0.0365 2026-08-12 0.0365 2026-08-13 0.0365 2026-08-14 0.0365 2026-08-17 0.0365 2026-08-18 0.0365 2026-08-19 0.0365 2026-08-20 0.0366 2026-08-21 0.0366 2026-08-24 0.0366 2026-08-25 0.0366 2026-08-26 0.0366 2026-08-27 0.0366 2026-08-28 0.0367 2026-08-31 Y 9987.61 Non-financial corporation 0.0995 0.00 Non-financial corporation 0.0692 0.00 Non-financial corporation 0.0654 0.00 Non-financial corporation 0.0656 0.00 Non-financial corporation 0.1451 0.00 Non-financial corporation 0.5509 0.00 N U.S. Treasury Reserves Portfolio U.S. Treasury Reserves Portfolio NA N/A LMUSTREASURYRES Investment Company Y Fitch, Inc. NR Moody's Investors Service, Inc. NR Standard and Poor's Ratings Services NR 2026-09-01 2026-09-01 2026-09-01 N N N 0.0000 2687546436.69 2687546436.69 1.0000 N Y Y N Legg Mason Partners Institutional Trust 2026-09-08 /s/Christopher Berarducci Christopher Berarducci Principal Financial Officer