N-MFP3 0001060517 XXXXXXXX 2026-06-30 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 12855044637.41 15989661012.71 0.5279 0.6566 2026-06-01 12750098507.16 15885033734.48 0.5258 0.6551 2026-06-02 13241006996.35 16376237257.41 0.5352 0.6619 2026-06-03 12585511542.37 15895977902.57 0.5226 0.6600 2026-06-04 12545217540.13 15977260088.87 0.5200 0.6623 2026-06-05 12533167596.81 16442142625.32 0.5190 0.6809 2026-06-08 12086900331.60 15996282762.17 0.5074 0.6715 2026-06-09 12273374176.24 15969184615.65 0.5133 0.6679 2026-06-10 11783816666.80 15352965995.27 0.5059 0.6591 2026-06-11 11693448049.16 15394886453.08 0.5038 0.6633 2026-06-12 12305024661.13 16490603942.34 0.5166 0.6923 2026-06-15 12230786476.45 16416743299.72 0.5151 0.6914 2026-06-16 12283509039.37 16340923544.53 0.5189 0.6903 2026-06-17 11335742892.29 15261378311.84 0.5017 0.6754 2026-06-18 11790827867.59 16321194209.09 0.5115 0.7081 2026-06-22 11843944060.45 16374734676.89 0.5088 0.7034 2026-06-23 11516493301.09 16047708786.91 0.5017 0.6991 2026-06-24 11552675753.52 16155115295.45 0.5054 0.7068 2026-06-25 11731932287.11 16207720903.58 0.5120 0.7074 2026-06-26 12319497177.49 16796589206.46 0.5242 0.7148 2026-06-29 11473744456.90 15951293306.12 0.5065 0.7041 2026-06-30 0.00 1233863400.61 0.00 143254.40 3755632.10 1230251022.91 1230263640.0600 Y 1.0000 0.0369 2026-06-01 0.0369 2026-06-02 0.0369 2026-06-03 0.0368 2026-06-04 0.0368 2026-06-05 0.0368 2026-06-08 0.0368 2026-06-09 0.0368 2026-06-10 0.0368 2026-06-11 0.0368 2026-06-12 0.0369 2026-06-15 0.0369 2026-06-16 0.0369 2026-06-17 0.0370 2026-06-18 0.0370 2026-06-22 0.0370 2026-06-23 0.0370 2026-06-24 0.0370 2026-06-25 0.0370 2026-06-26 0.0370 2026-06-29 0.0371 2026-06-30 0.9999 2026-06-01 0.9999 2026-06-02 0.9999 2026-06-03 0.9999 2026-06-04 0.9999 2026-06-05 0.9999 2026-06-08 0.9999 2026-06-09 0.9999 2026-06-10 0.9999 2026-06-11 0.9999 2026-06-12 0.9999 2026-06-15 0.9999 2026-06-16 0.9999 2026-06-17 0.9998 2026-06-18 0.9998 2026-06-22 0.9999 2026-06-23 0.9998 2026-06-24 0.9999 2026-06-25 0.9998 2026-06-26 0.9998 2026-06-29 0.9998 2026-06-30 N N Class A C000167202 5000.00 1230251022.91 1230263640.0600 0.9999 2026-06-01 0.9999 2026-06-02 0.9999 2026-06-03 0.9999 2026-06-04 0.9999 2026-06-05 0.9999 2026-06-08 0.9999 2026-06-09 0.9999 2026-06-10 0.9999 2026-06-11 0.9999 2026-06-12 0.9999 2026-06-15 0.9999 2026-06-16 0.9999 2026-06-17 0.9998 2026-06-18 0.9998 2026-06-22 0.9999 2026-06-23 0.9998 2026-06-24 0.9999 2026-06-25 0.9998 2026-06-26 0.9998 2026-06-29 0.9998 2026-06-30 86170577.80 91554273.20 2026-06-01 222931400.65 116785266.26 2026-06-02 309730506.66 237996032.26 2026-06-03 199343870.67 378835136.03 2026-06-04 268119967.89 262730229.16 2026-06-05 53154996.17 62410110.74 2026-06-08 64538335.71 70185194.91 2026-06-09 158619651.77 68273686.44 2026-06-10 72218317.64 102614821.77 2026-06-11 126391658.73 163242425.93 2026-06-12 87463041.05 98599030.97 2026-06-15 360902864.36 76552744.85 2026-06-16 139049560.87 365274548.93 2026-06-17 329419044.98 426370254.60 2026-06-18 342466454.37 166683697.89 2026-06-22 393428014.32 148294214.88 2026-06-23 101413880.20 455888284.70 2026-06-24 392881024.10 436469578.55 2026-06-25 75625799.71 107884465.70 2026-06-26 108537581.24 89623142.56 2026-06-29 231744321.16 76076085.61 2026-06-30 4124150870.05 4002343225.94 0.0301 2026-06-01 0.0302 2026-06-02 0.0302 2026-06-03 0.0302 2026-06-04 0.0301 2026-06-05 0.0301 2026-06-08 0.0301 2026-06-09 0.0301 2026-06-10 0.0301 2026-06-11 0.0301 2026-06-12 0.0302 2026-06-15 0.0303 2026-06-16 0.0303 2026-06-17 0.0303 2026-06-18 0.0303 2026-06-22 0.0303 2026-06-23 0.0303 2026-06-24 0.0303 2026-06-25 0.0304 2026-06-26 0.0303 2026-06-29 0.0303 2026-06-30 N 0.00 Broker-dealer 0.1163 0.00 N Government Master Fund Government Master Fund 976WHL907 54930015XY4J2ENG8G36 0001403166 976WHL907 Investment Company Y 2026-07-01 2026-07-01 2026-07-01 N N N 0.0000 1233863400.61 1233863400.61 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 2026-07-08 /s/Rose Ann Bubloski Rose Ann Bubloski Vice President