N-MFP3 0001060517 XXXXXXXX 2026-07-31 UBS Series Funds 0001060517 54930058UKPXVB81RJ71 UBS RMA Government Money Market Fund 549300WUNTYEEH9XHV55 S000053134 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 927299959.76 0.00 140345.82 3664884.75 923775420.83 923788037.9800 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 0.0370 2026-07-10 0.0369 2026-07-13 0.0369 2026-07-14 0.0370 2026-07-15 0.0370 2026-07-16 0.0371 2026-07-17 0.0372 2026-07-20 0.0372 2026-07-21 0.0371 2026-07-22 0.0372 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 0.9998 2026-07-02 0.9999 2026-07-06 0.9999 2026-07-07 0.9999 2026-07-08 0.9999 2026-07-09 0.9998 2026-07-10 0.9999 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 0.9999 2026-07-22 0.9998 2026-07-23 0.9998 2026-07-24 0.9998 2026-07-27 0.9999 2026-07-28 0.9999 2026-07-29 1.0000 2026-07-30 0.9999 2026-07-31 N N Class A C000167202 5000.00 923775420.83 923788037.9800 0.9999 2026-07-01 0.9998 2026-07-02 0.9999 2026-07-06 0.9999 2026-07-07 0.9999 2026-07-08 0.9999 2026-07-09 0.9998 2026-07-10 0.9999 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 0.9999 2026-07-22 0.9998 2026-07-23 0.9998 2026-07-24 0.9998 2026-07-27 0.9999 2026-07-28 0.9999 2026-07-29 1.0000 2026-07-30 0.9999 2026-07-31 108235927.06 231343567.17 2026-07-01 223645262.36 286602004.32 2026-07-02 95605502.10 95948433.16 2026-07-06 81620812.12 67176566.16 2026-07-07 277076811.86 64509615.02 2026-07-08 81291172.54 281888820.53 2026-07-09 248612774.17 268179027.07 2026-07-10 50747208.76 71832499.70 2026-07-13 54816068.02 46964580.70 2026-07-14 74877545.91 36778643.03 2026-07-15 72279741.70 84451805.56 2026-07-16 98376566.77 99729096.74 2026-07-17 65996715.37 82282494.76 2026-07-20 73664092.16 53907840.40 2026-07-21 85673764.06 55650080.21 2026-07-22 216702304.53 225983993.32 2026-07-23 227392918.38 225079346.83 2026-07-24 46100677.98 225618081.04 2026-07-27 246959172.58 236682766.42 2026-07-28 78906787.02 59880658.59 2026-07-29 76332124.70 73078002.84 2026-07-30 63926025.32 81747653.98 2026-07-31 2648839975.47 2955315577.55 0.0303 2026-07-01 0.0304 2026-07-02 0.0304 2026-07-06 0.0303 2026-07-07 0.0304 2026-07-08 0.0303 2026-07-09 0.0302 2026-07-10 0.0302 2026-07-13 0.0302 2026-07-14 0.0302 2026-07-15 0.0302 2026-07-16 0.0304 2026-07-17 0.0304 2026-07-20 0.0305 2026-07-21 0.0305 2026-07-22 0.0305 2026-07-23 0.0305 2026-07-24 0.0305 2026-07-27 0.0305 2026-07-28 0.0305 2026-07-29 0.0305 2026-07-30 0.0304 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 927299959.76 927299959.76 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