N-MFP3 0001060517 XXXXXXXX 2026-07-31 UBS Series Funds 0001060517 54930058UKPXVB81RJ71 UBS Select Government Institutional Fund 549300TZ2QEM4T3XX713 S000053131 1 N N 333-52965 UBS ASSET MANAGEMENT (AMERICAS) LLC 801-34910 Ernst & Young LLP New York NY UBS ASSET MANAGEMENT (AMERICAS) LLC BNY Mellon Investment Servicing (US) Inc. 0000849542 084-01761 Y 0001403166 Government Master Fund S000054189 N N Government N N 1 1 12052555628.49 16359544373.97 0.5226 0.7094 2026-07-01 11577747293.12 16179039589.78 0.5100 0.7127 2026-07-02 11893833205.53 16968933482.03 0.5143 0.7337 2026-07-06 11547655832.10 16623259669.41 0.5069 0.7297 2026-07-07 11903296415.51 16850505033.13 0.5173 0.7323 2026-07-08 11554756357.28 16402458113.61 0.5122 0.7270 2026-07-09 12142869300.51 16709111705.11 0.5258 0.7235 2026-07-10 12593188548.62 17160624851.05 0.5348 0.7288 2026-07-13 12051577784.81 16619551486.15 0.5239 0.7224 2026-07-14 12068313858.79 16495729803.50 0.5274 0.7209 2026-07-15 12374863655.00 16483939244.29 0.5459 0.7272 2026-07-16 12406797901.77 16516260242.48 0.5443 0.7246 2026-07-17 12901478713.15 17253674901.66 0.5540 0.7408 2026-07-20 13079542571.26 17179135498.89 0.5634 0.7400 2026-07-21 13530652451.19 17561605191.96 0.5734 0.7442 2026-07-22 13707765614.09 17527088603.93 0.5818 0.7439 2026-07-23 13585035930.76 17404772043.22 0.5795 0.7424 2026-07-24 13494350230.09 17315186802.85 0.5779 0.7415 2026-07-27 13200385456.12 17021538834.88 0.5726 0.7383 2026-07-28 13249335382.86 17070857751.97 0.5735 0.7389 2026-07-29 13271390670.32 16663487690.82 0.5847 0.7342 2026-07-30 13419803236.54 16752536253.24 0.5921 0.7391 2026-07-31 0.00 8974884318.23 0.00 0.00 28751939.58 8946132378.65 8945930853.3300 Y 1.0000 0.0371 2026-07-01 0.0371 2026-07-02 0.0371 2026-07-06 0.0371 2026-07-07 0.0371 2026-07-08 0.0371 2026-07-09 0.0369 2026-07-10 0.0369 2026-07-13 0.0369 2026-07-14 0.0369 2026-07-15 0.0370 2026-07-16 0.0371 2026-07-17 0.0371 2026-07-20 0.0371 2026-07-21 0.0371 2026-07-22 0.0371 2026-07-23 0.0372 2026-07-24 0.0372 2026-07-27 0.0373 2026-07-28 0.0373 2026-07-29 0.0373 2026-07-30 0.0374 2026-07-31 0.9999 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 0.9999 2026-07-13 0.9999 2026-07-14 1.0000 2026-07-15 1.0000 2026-07-16 0.9999 2026-07-17 0.9999 2026-07-20 0.9999 2026-07-21 0.9999 2026-07-22 0.9999 2026-07-23 0.9998 2026-07-24 0.9999 2026-07-27 0.9999 2026-07-28 1.0000 2026-07-29 1.0000 2026-07-30 0.9999 2026-07-31 N N Basis A C000167199 1000000.00 8946132378.65 8945930853.3300 0.9999 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 0.9999 2026-07-13 0.9999 2026-07-14 1.0000 2026-07-15 1.0000 2026-07-16 0.9999 2026-07-17 0.9999 2026-07-20 0.9999 2026-07-21 0.9999 2026-07-22 0.9999 2026-07-23 0.9998 2026-07-24 0.9999 2026-07-27 0.9999 2026-07-28 1.0000 2026-07-29 1.0000 2026-07-30 0.9999 2026-07-31 185630962.32 78962225.79 2026-07-01 67969072.85 142599456.66 2026-07-02 67911297.61 65547137.01 2026-07-06 162678885.89 52797323.99 2026-07-07 159014816.36 62396431.21 2026-07-08 34017931.61 44311019.32 2026-07-09 152899616.06 31138475.71 2026-07-10 94432314.65 56553393.94 2026-07-13 29918919.38 269901442.12 2026-07-14 48225541.24 52235924.52 2026-07-15 109902217.07 37214283.91 2026-07-16 67139835.38 77549398.07 2026-07-17 171413191.60 43455037.30 2026-07-20 158721520.52 184693672.47 2026-07-21 72049851.15 54950624.55 2026-07-22 47031227.98 53621214.28 2026-07-23 57290060.60 47955063.60 2026-07-24 56113265.71 53370604.02 2026-07-27 38934031.64 68719129.32 2026-07-28 45364342.11 53836566.21 2026-07-29 49061781.09 69734164.39 2026-07-30 80203950.42 127546941.92 2026-07-31 1955924633.24 1729089530.31 0.0353 2026-07-01 0.0353 2026-07-02 0.0353 2026-07-06 0.0353 2026-07-07 0.0353 2026-07-08 0.0353 2026-07-09 0.0351 2026-07-10 0.0351 2026-07-13 0.0351 2026-07-14 0.0351 2026-07-15 0.0352 2026-07-16 0.0353 2026-07-17 0.0353 2026-07-20 0.0353 2026-07-21 0.0353 2026-07-22 0.0353 2026-07-23 0.0354 2026-07-24 0.0354 2026-07-27 0.0355 2026-07-28 0.0355 2026-07-29 0.0355 2026-07-30 0.0356 2026-07-31 N 0.00 N Government Master Fund Government Master Fund 976WHL907 54930015XY4J2ENG8G36 0001403166 976WHL907 Investment Company Y 2026-08-03 2026-08-03 2026-08-03 N N N 0.0000 8974884318.23 8974884318.23 1.0000 N Y Y N The master-feeder funds are parties to a written daily liquidity agreement; consistent with SEC staff interpretative guidance, ownership interests in the master fund are categorized as a Daily Liquid Asset/Weekly Liquid Asset by the feeder funds. UBS Series Funds 2026-08-07 /s/Rose Ann Bubloski Rose Ann Bubloski Vice President