2025-11-17T06:56:21-08:00 2024-12-31 872648601 Park Law Office LLC 1000 Skokie Boulevard Ste 255 Wilmette IL 60091 990PF 2024-01-01 261393157 The Corwith Fund CORW 3126760300 c/o Briar Hall LLC 333 West Wacker Chicago IL 60606 Susan Simmers Trustee 3126760300 2025-11-15 true true Thomas G Park P01058539 8472516700 2025-11-17 2024 2025-03-06 01:10:19Z X X 17642351 X 14113409 58280 58280 520795 898463 520795 0 786 18 14693270 579093 2797 2797 0 1384 1384 2619 486 0 15 15 6815 4667 15 163500 2142082 170315 4667 2142097 14522955 574426 333643 978553 978553 1697 0 0 0 34828 35043 2933823 6308907 15798564 0 347082 349848 0 21273 480343 480343 0 0 0 0 3290436 8149713 17642351 0 0 0 0 0 X 3290436 8149713 3290436 8149713 3290436 8149713 3290436 14522955 17813391 9663678 8149713 Publicly traded securities 898463 0 377668 520795 0 0 0 520795 520795 7985 0 7985 0 7985 1514 14456 15970 -15970 7985 7985 false false false false false false false true true IL true false false false false true N/A Briar Hall LLC 3126760300 333 West Wacker Drive Suite 2500 Chicago IL 60606 false false false false false false false false false false false false false false false false false false false false false Jonathan C Hamill 545 Oak Knoll Road Barrington IL 60010 Trustee 0.00 0 0 0 Nancy H Hamill 545 Oak Knoll Road Barrington IL 60010 Trustee 0.00 0 0 0 Susan CH Simmers 114 Blackfeet Dr Hailey ID 83333 Trustee 0.00 0 0 0 Kimberly CH Dietz 1200 Sheridan Road Evanston IL 60202 Trustee 0.00 0 0 0 NONE 0 NONE 0 4257171 344287 40029 4641487 0 4641487 69622 4571865 228593 228593 7985 7985 220608 220608 220608 2142097 2142097 220608 118137 2115481 2250468 1294776 2991482 1884599 10536806 2142097 118137 0 220607 1803353 12340159 0 0 0 1 2115481 10224678 2250468 1294776 2991482 1884599 1803353 Jonathan C Hamill None X Advocate Charitable Foundation Dept 21058 PO Box 4556 Chicago IL 60680 PC UnrestrictedGeneral Support 25000 Amazon Conservation Team 4211 N Fairfax Drive Arlington VA 22203 PC UnrestrictedGeneral Support 1000 American Cancer Society PO Box 22478 Oklahoma City OK 73123 PC UnrestrictedGeneral Support 1000 Barrington Area Community Foundation 600 Hart Road Suite 205 Barrington IL 60010 PC UnrestrictedGeneral Support 2500 Barrington Area Conservation Trust 145 W Main Street Suite 201 Barrington IL 60010 PC UnrestrictedGeneral Support 5000 Barrington Area Council on Aging 6000 Garlands Lane Suite 100 Barrington IL 60010 PC UnrestrictedGeneral Support 1500 Barrington District 220 Educational Foundation PO Box 262 Barrington IL 60011 PC UnrestrictedGeneral Support 1000 Barrington Giving Day 201 S Hough Street Barrington IL 60010 PC UnrestrictedGeneral Support 2000 Barrington History Museum 212 W Main Street Barrington IL 60010 PC UnrestrictedGeneral Support 1000 Barrington Youth & Family Services 118 Applebee Street Barrington IL 60010 PC UnrestrictedGeneral Support 5000 Canine Companions 7480 New Albany Condit Road New Albany OH 43054 PC UnrestrictedGeneral Support 2500 Chicago Commons Association 515 East 50th Street Suite 200 Chicago IL 60615 PC UnrestrictedGeneral Support 1000 Chicago History Museum 1601 North Clark Street Chicago IL 60614 PC UnrestrictedGeneral Support 1000 Citizens for Conservation 459 West IL Route 22 Barrington IL 60010 PC UnrestrictedGeneral Support 25000 Conservancy of Southwest Florida 1450 Merrihue Drive Naples FL 34102 PC UnrestrictedGeneral Support 5000 Cuba Cares Fund 28000 W Cuba Road Barrington IL 60010 PC UnrestrictedGeneral Support 1000 Kellogg School of Management 1007 Church Street Suite 400 Evanston IL 60201 PC UnrestrictedGeneral Support 1000 Life Flight Foundation PO Box 899 Camden ME 04843 PC UnrestrictedGeneral Support 1000 Naples Historical Society 137 12th Avenue South Naples FL 34102 pc UnrestrictedGeneral Support 2500 Naples Zoo 1590 Goodlette-Frank Road Naples FL 34102 PC UnrestrictedGeneral Support 35000 National Park Foundation 1110 Vermont Ave NW Suite 200 Washington DC 20005 PC UnrestrictedGeneral Support 5000 National Trust for Historic Preservaation 2600 Virginia Avenue NW Suite 1000 Washington DC 20037 PC UnrestrictedGeneral Support 1000 NCH Health Foundation PO Box 234 Naples FL 34106 SO II UnrestrictedGeneral Support 7500 Neighborhood Health Clinic 88 12th Street North Suite 100 Naples FL 34102 PC UnrestrictedGeneral Support 5000 Naples Yacht Club Blue Gavel Scholarship Fund 700 14th Ave South Naples FL 34102 PC UnrestrictedGeneral Support 1000 Preservation Foundation of Lake County 1899 West Winchester Road Livertyville IL 60048 PC UnrestrictedGeneral Support 1000 Rush University 1700 W Van Buren Street Suite 250 Chicago IL 60612 PC UnrestrictedGeneral Support 2500 Student Conservation Association 689 River Road Charlestown NH 03603 PC UnrestrictedGeneral Support 1000 The Conservation Foundation 10 S 404 Knoch Knolls Road Naperville IL 60565 PC UnrestrictedGeneral Support 1000 The HAP Foundation 18W149 Butterfield Rd Suite 1120 Oakbrook Terrace IL 60181 PC UnrestrictedGeneral Support 7500 The Trust for Public Land 116 New Montgomery Street 4th Floor San Francisco CA 94105 PC UnrestrictedGeneral Support 1000 The Wetlands Initiative 53 W Jackson Blvd Suite 1015 Chicago IL 60604 PC UnrestrictedGeneral Support 1500 Trout Unlimited 1300 N 17th Street Suite 500 Arlington VA 22209 PC UnrestrictedGeneral Support 1000 Woman's Board of Rush University Medical Center 1700 W Van Buren Street Suite 250 Chicago IL 60612 PC UnrestrictedGeneral Support 5000 Yale University PO Box 1844 New Haven CT 06508 PC UnrestrictedGeneral Support 2500 163500 14 58280 18 520795 Section 1411 Net Investment Income 14 18 579093 579093 false false false false false false false false false false X X 1 Hamill Family Foundation - NT 03-18125 - Cash c/o Briar Hall LLC 333 West Wacker Chicago IL 60606 375758 X 2 Hamill Family Foundation - NT 03-18125 c/o Briar Hall LLC 333 West Wacker Chicago IL 60606 10862941 X X 3 Hamill Family Foundation - NT 03-03604 - Cash c/o Briar Hall LLC 333 West Wacker Chicago IL 60606 130000 X 4 Hamill Family Foundation - NT 03-03604 c/o Briar Hall LLC 333 West Wacker Chicago IL 60606 1986052 X X 5 Hamill Family Foundation - Cornelius Capital Partners LP c/o Briar Hall LLC 333 West Wacker Chicago IL 60606 340912 X X 6 Hamill Family Foundation - HCS Family Fund LP c/o Briar Hall LLC 333 West Wacker Chicago IL 60606 139431 X X 7 Hamill Family Foundation - Acct 8438 c/o Briar Hall LLC 333 West Wacker Chicago IL 60606 278315 X 2 Securities - See Attachment B 10862941 2024-12-20 4 Securities - See Attachment C 1986052 2024-12-20 5 0.1473% limited partnership interest in Cornelius Capital Partners, LP 340912 2024-12-31 6 2.1728% limited partnership interest in HCS Family Fund, LP 139431 2024-12-31 Publicly traded securities 898463 377668 520795 Corporate Bonds, funds & ETFs-See Attachment A 346788 349554 Fixed Income Purchased Interest-See Attachment A 294 294 Total Equity Securities-See Attachment A 6308907 15798564 29828 29996 5000 5047 Total Commodities-See Attachment A 0 0 Cornelius Capital Partners, L.P. (CCP) 340912 340912 HCS Family Fund, L.P. 139431 139431 Park Law Office, LLC Legal, tax prep 2797 2797 Prior year adjustment 2293 Book to FMV difference Hamill Family Foundation contributions 7739422 Adjustment to prior year book value based on 2023 unrealized gain-change from FMV 1921963 IL Charity Bureau Fund-2024 Annual Report Fee 15 15 Sect. 1411 Net Investment Income 18 18 Class Action Proceeds 768 0 Northern Trust Management Fees 1384 1384 Foreign Taxes Paid 486 486 2023 Excise Tax Paid 619 0 2024 Estimated Excise Tax Paid 1514 0