X0102 24F-2NT LIVE 0001423799 XXXXXXXX false false N-1A Dreyfus Institutional Reserves Funds 240 Greenwich Street New York NY X1 10286 Dreyfus Institutional Preferred Treasury Obligations Fund S000021490 Hamilton Shares C000061463 811-22169 333-148652 04/30/2026 false C000061463 605414234.00 638162106.00 1330322742.00 1968484848.00 0.00 (1363070614.00) 0.0001381 0.00 0.00 0.00 /s/ Deirdre Cunnane Deirdre Cunnane, Vice President and Assistant Secretary 07/17/2026 Dreyfus Institutional Reserves Funds 240 Greenwich Street New York NY X1 10286 Dreyfus Institutional Preferred Treasury Obligations Fund S000021490 Institutional Shares C000061462 811-22169 333-148652 04/30/2026 false C000061462 10933828442.00 10715085567.00 56313204.00 10771398771.00 162429671.00 0.00 0.0001381 22431.54 0.00 22431.54 /s/ Deirdre Cunnane Deirdre Cunnane, Vice President and Assistant Secretary 07/17/2026