2026-04-14T17:17:51-07:00 2025-12-31 842431938 Oscar Khaw CPA 1470 Vista Lane Pasadena CA 91103 990PF 2025-01-01 236391020 Harry & Beatrice Sley Foundation HARR 3017677999 4821 Montgomery Ln 205 Bethesda MD 20814 Betsy Sley Grossman Trustee 2026-04-14 true Oscar Khaw CPA P00544664 8186018291 2025 2025-03-06 01:10:19Z X 348935 X X 1 1 5761 5761 20593 36262 20593 26355 26355 4176 4176 33 33 4209 4209 0 61840 61840 66049 4209 61840 -39694 22146 2408 3252 3252 854 282 282 113242 104471 345401 116504 108005 348935 0 X 116504 108005 116504 108005 116504 108005 116504 -39694 31195 108005 108005 Charles Schwab P 2025-12-31 2025-12-31 5997 6027 -30 -30 Charles Schwab P 2024-01-01 2025-12-31 30265 9642 20623 20623 20593 308 308 308 767 767 459 459 false false false false false false false false true DC false false false false false true N/A Betsy Grossman 3017677999 4821 Montgomery Ln 205 Bethesda MD 20814 false false false false false false false false false false false false false false false false false false false false false false Betsy Sley Grossman 4821 Montgomery Ln 205 Bethesda MD 20814 Executive Dir. 5.00 0 Benjamin H Sley 828 Ridgewood Blvd Hudon OH 44236 Executive Dir. 0.00 0 NONE NONE 345401 1597 0 346998 0 346998 5205 341793 17090 17090 308 308 16782 16782 16782 61840 61840 16782 16623 10079 15171 25475 27256 94604 61840 0 16782 45058 139662 0 16623 123039 10079 15171 25475 27256 45058 X Betsy Grossman 4821 Montgomery Ln 205 Bethseda MD 20814 Manassas Ballet Theatre 9004 Mathis Avenue Manassas VA 20110 PF General 1000 Save a Child's Heart 12320 Parklawn Dr Rockville MD 20852 PF General 360 US Holocaust Memorial Museum Raoul Wallenberg Pl SW Washington DC DC 20024 PF General 5500 Arena Stage 1101 6th St SW Washington DC DC 20024 PF GEneral 1200 Cystic Fibrosis 6931 Arlington Rd Bethseda MD 20814 PF General 500 The Ivymount School 11614 Seven Locks Rd Rockville MD 20854 PF General 100 Guide Dogs for the Blind 350 Los Ranchitos Rd San Rafael CA 94903 PF General 100 McLean Projects for the Arts 1234 Ingleside Ave McLean VA 22101 PF General 1350 The Lab School 4759 reservoir Rd NW Washington DC DC 20007 PF General 1100 Washington Hebrew Congregation 3935 Macomb St NW Washington DC DC 20016 PF General 3900 Alzheimers Association 1850 York Rd Lutherville MD 21093 PF General 500 First Descents 2827 N Layayette St 161 Denver CO 80205 PF General 520 International Myeloma Foundation 4400 Coldwater Canyon Ave 300 Studio City CA 91604 PF General 9250 Har Shalom 69710 Highway 111 Rancho Mirage CA 92270 PF General 960 Maccabi USA 1511 Walnut St Philadelphia PA 19102 PF General 1800 Church of the Redeemer 19425 Woodfield Rd Gaithersburg MD 20879 PF General 10000 Defiant Requim Foundation 5506 Connecticut Ave NW Washington DC DC 20015 PF General 500 Giffords Law Center 1310 L St NW 600 Washington DC DC 20005 PF General 21500 Imagination Stage 4908 Auburn Ave Bethseda MD 20814 PF General 1000 Smithsonian Associates PO Box 23293 Washington DC DC 20026 PF General 100 WETA 3939 Campbell Ave Arlington VA 22206 PF General 100 St Jude Childrens Research Hospital 262 Danny Thomas Pl Memphis TN 38105 PF General 100 World Wildlife Fund 131 Steuart St San Francisco CA 94105 PF General 100 Bethseda Chevy Chase Rescue Squad 5020 Battery Ln Bethseda MD 20814 PF General 100 Cabin John Volunteer Fire Dept 8001 River Rd Bethseda MD 20817 PF General 100 The Phillips Collection 1600 21st ST NW Washington DC DC 20009 PF General 100 61840 14 1 14 5761 18 20593 26355 26355 false false false false false false false false false false DC no longer requiresthe 990-PF to be filed. Charles Schwab AT COST 104471 345401 Bank charges 33 33 Charles Schwab 556 556 0 0 Strauss & Assoc 120 120 0 0 Strauss & Assoc 3500 3500 0 0