2025-12-23T08:54:18-06:00 2024-12-31 Foundation Source 3333 New Hyde Park Rd Ste 406 New Hyde Park NY 11042 990PF 2024-01-01 853068681 The Silseth Foundation % Foundation Source SILS 8008391754 Foundation Source 501 Silverside Rd Wilmington DE 198091377 John Silseth President 8008391754 2025-12-20 true true Jeffrey D Haskell P01345770 8008391754 2024 2025-03-06 01:10:19Z X 8440774 X 346006 710 710 52852 52852 -142313 1110313 797970 -1436 592 255819 852124 0 21400 12238 114 11282 33638 114 11282 442500 442500 476138 114 453782 -220319 852010 0 21042 66594 66594 5987453 5730342 8276230 65039 56279 97950 6073534 5853215 8440774 0 0 X 6073534 5853215 6073534 5853215 6073534 5853215 6073534 -220319 5853215 5853215 Publicly-traded Securities 1110313 312345 797968 797968 Passthrough K1 Capital Gain/(Loss) 2 797970 11843 11843 11843 11896 0 11896 X 0 53 53 false false false false false false false true true DE true false false false false true Foundation Source 8008391754 501 Silverside Road Suite 123 Wilmington DE 198091377 false false false false false false false false false false false false false false false false false false false false false Jennifer S Binversie Foundation Source 501 Silverside Rd Wilmington DE 198091377 Dir, Sec 1.0 0 0 0 John M Silseth Foundation Source 501 Silverside Rd Wilmington DE 198091377 Dir, Pres 2.0 0 0 0 John B Silseth Foundation Source 501 Silverside Rd Wilmington DE 198091377 Dir, Treas 1.0 0 0 0 Karen K Silseth Foundation Source 501 Silverside Rd Wilmington DE 198091377 Dir, VP 1.0 0 0 0 7271573 113688 0 7385261 0 7385261 110779 7274482 363724 363724 11843 11843 351881 351881 351881 453782 0 0 0 0 453782 351881 6500 22576 178054 181501 388631 453782 351881 101901 490532 0 490532 6500 22576 178054 181501 101901 John M Silseth Karen K Silseth X ALDO LEOPOLD FOUNDATION INC E13701 LEVEE RD BARABOO WI 53913 N/A PC General & Unrestricted 7500 ASTRONOMERS WITHOUT BORDERS INC 26500 AGOURA RD STE 102 PMB 618 CALABASAS CA 91302 N/A PC General & Unrestricted 1000 BADGER INSTITUTE INC 700 W VIRGINIA ST STE 301 MILWAUKEE WI 53204 N/A PC General & Unrestricted 7500 BILL COOK FOUNDATION 3 OAK ST GENESEO NY 14454 N/A PC General & Unrestricted 500 BROOKLINK INC 12555 W BURLEIGH RD STE 3 BROOKFIELD WI 53005 N/A PC General & Unrestricted 15000 CHRISTIAN SOLIDARITY INTERNATIONAL INC 870 HAMPSHIRE RD STE T WESTLAKE VLG CA 91361 N/A PC General & Unrestricted 20000 COLLIER COUNTY HUNGER AND HOMELESS COALITION INC PO BOX 9202 NAPLES FL 34101 N/A PC General & Unrestricted 2000 CYSTIC FIBROSIS FOUNDATION 4550 MONTGOMERY AVE STE 1100 N BETHESDA MD 20814 N/A PC Charitable Event 3000 DAVIDS STAR LUTHERAN CHURCH 2740 DAVIDS STAR DR JACKSON WI 53037 N/A PC Christmas Eve school program 500 DAVIDS STAR LUTHERAN CHURCH 2740 DAVIDS STAR DR JACKSON WI 53037 N/A PC Locker Project/Parent's Group 3000 ELMBROOK CHURCH 777 S BARKER RD BROOKFIELD WI 53045 N/A PC Harvest Fund 32000 ELMBROOK CHURCH 777 S BARKER RD BROOKFIELD WI 53045 N/A PC Life & Light Eva Lawrenz Memorial Fund 3000 ELMBROOK CHURCH 777 S BARKER RD BROOKFIELD WI 53045 N/A PC General & Unrestricted 84000 FAITH BIBLE CHURCH OF NAPLES INC 6464 IMMOKALEE RD NAPLES FL 34119 N/A PC Building Fund 25000 FAITH BIBLE CHURCH OF NAPLES INC 6464 IMMOKALEE RD NAPLES FL 34119 N/A PC General & Unrestricted 12000 FAMILY STATIONS INC 4057 RURAL PLAINS CIR FRANKLIN TN 37064 N/A PC General & Unrestricted 2500 FOOD PANTRY OF WAUKESHA COUNTY INC 1301 SENTRY DR WAUKESHA WI 53186 N/A PC General & Unrestricted 10000 FOUNDATION FOR GOVERNMENT ACCOUNTABILITY INC 15275 COLLIER BLVD STE 201-279 NAPLES FL 34119 N/A PC General & Unrestricted 5000 GLOBAL SERVE INTERNATIONAL INC 2102 SW 47TH ST CAPE CORAL FL 33914 N/A PC General & Unrestricted 10000 GOODWILL INDUSTRIES OF SOUTHEASTERN WISCONSIN INC 6055 N 91ST ST MILWAUKEE WI 53225 N/A PC General & Unrestricted 10000 HEALTHNETWORK FOUNDATION 3550 LANDER RD STE 225 PEPPER PIKE OH 44124 N/A PC General & Unrestricted 5000 HEBRON HOUSE OF HOSPITALITY FOUNDATION INC 1166 QUAIL CT STE 400 PEWAUKEE WI 53072 N/A PC General & Unrestricted 5000 HOPE CENTER INC 101 W BROADWAY WAUKESHA WI 53186 N/A PC General & Unrestricted 5000 ICE AGE TRAIL ALLIANCE 2110 MAIN ST CROSS PLAINS WI 53528 N/A PC General & Unrestricted 2500 JAMES W FOLEY LEGACY FOUNDATION INC 200 MARCY ST STE 102 PORTSMOUTH NH 03801 N/A PC General & Unrestricted 1000 JOHN K MACIVER INSTITUTE FOR PUBLIC POLICY INC 44 E MIFFLIN ST STE 404 MADISON WI 53703 N/A PC General & Unrestricted 5000 LUTHER SEMINARY 2481 COMO AVE SAINT PAUL MN 55108 N/A PC General & Unrestricted 1000 LUTHERAN SOCIAL SERVICES OF WISCONSIN AND UPPER MI 6737 W WASHINGTON ST STE 227 WEST ALLIS WI 53214 N/A PC General & Unrestricted 5000 LUTHERAN WORLD RELIEF INC 700 LIGHT ST BALTIMORE MD 21230 N/A PC General & Unrestricted 1000 MASSACHUSETTS GENERAL HOSPITAL 125 NASHUA ST STE 540 BOSTON MA 02114 N/A PC Dr Denise Faustman Lab 25000 MILWAUKEE RESCUE MISSION 830 N 19TH ST MILWAUKEE WI 53233 N/A PC General & Unrestricted 15000 MT CARMEL LUTHERAN CHURCH 8424 W CENTER ST MILWAUKEE WI 53222 N/A PC General & Unrestricted 3000 PATHFINDERS MILWAUKEE INC 4200 N HOLTON ST STE 400 MILWAUKEE WI 53212 N/A PC General & Unrestricted 3000 PRAGER UNIVERSITY FOUNDATION 15021 VENTURA BLVD 552 SHERMAN OAKS CA 91403 N/A PC General & Unrestricted 6000 RAWHIDE INC E7475 RAWHIDE RD NEW LONDON WI 54961 N/A PC General & Unrestricted 3000 SAMARITANS PURSE PO BOX 3000 BOONE NC 28607 N/A PC Hurricane Milton aid 5000 SAMARITANS PURSE PO BOX 3000 BOONE NC 28607 N/A PC General & Unrestricted 6000 SERENITY INNS INC PO BOX 26887 MILWAUKEE WI 53226 N/A PC New Serenity Inns building fund 10000 SERENITY INNS INC PO BOX 26887 MILWAUKEE WI 53226 N/A PC General & Unrestricted 6000 SHARON LYNNE WILSON CENTER FOR THE ARTS INC 3270 MITCHELL PARK DR BROOKFIELD WI 53045 N/A PC General & Unrestricted 10000 TELLING THE TRUTH INC 12660 W N AVE 100 BROOKFIELD WI 53005 N/A PC General & Unrestricted 5500 THE SALVATION ARMY OF GREATER MILWAUKEE 11315 W WATERTOWN PLANK RD MILWAUKEE WI 53226 N/A PC General & Unrestricted 15000 UNITED LUTHERAN PROGRAM FOR THE AGING INC 4545 N 92ND ST WAUWATOSA WI 53225 N/A PC General & Unrestricted 6000 WISCONSIN INMATE EDUCATION ASSOCIATION INC PO BOX 684 BROOKFIELD WI 53008 N/A PC General & Unrestricted 10000 WISCONSIN INSTITUTE FOR LAW & LIBERTY INC 330 E KILBOURN AVE STE 725 MILWAUKEE WI 53202 N/A PC General & Unrestricted 10000 WORLD CENTRAL KITCHEN INCORPORATED PO BOX 96538 WASHINGTON DC 20090 N/A PC General & Unrestricted 5000 WORLD RELIEF CORPORATION OF NATIONAL ASSOCIATION O PO BOX 96479 WASHINGTON DC 20077 N/A PC General & Unrestricted 15000 442500 14 710 14 52852 18 -142313 K-1 Inc/Loss 525990 -2028 14 592 -2028 -88159 -90187 false false false false false false false false false false X X 1 JOHN M SILSETH 15815 Choctaw Trail Brookfield WI 53045 346006 X 1 FIRST BUSINESS FINANCIAL SERVICES, INC. FBIZ, 3400 sh. 120360 2024-02-29 1 ELI LILLY & CO LLY, 295 sh. 225646 2024-03-20 FORM 990-PF FORM 990-PF One or more partnerships have provided a Schedule K-3 for the tax year in which they have checked one or more of the boxes in Part I but not provided sufficient back-up information to allow the Foundation to verify why such boxes were checked or the extent to which the checking of such boxes affects any item on this return. The Foundation has prepared this return to the best of its ability and without any foreign filings for such partnerships based on the information provided to it by these partnerships and on the basis of having received no information to the contrary. Any missing or incomplete information is due to the Foundation's inability to obtain such information and is not a willful attempt to withhold such information. ALPHABET INC CL A 62818 94650 ALPHABET INC CL C 551233 804609 APPLIED MATERIALS INC 13574 16263 BANK OF AMERICA CORP 29030 43950 BERKSHIRE HATHAWAY INC DEL CL 1003112 1361839 BERKSHIRE HATHAWAY INC. CLASS 235356 457813 CISCO SYSTEMS INC 45290 59200 CROWDSTRIKE HOLDINGS, INC 224018 290836 DEERE CO 204129 226680 ELI LILLY & CO 349127 579000 FASTENAL COMPANY 66625 86292 FIRST BUSINESS FINANCIAL SERVI 120360 157386 GATX CORP INC 12232 15496 INTEL CORP 50555 20050 JPMORGAN EQUITY PREMIUM INCO 26997 26176 KENVUE INC 25929 27776 KIMBERLY CLARK CORP 16160 16380 KINDER MORGAN INC 43254 82200 KRAFT HEINZ CO 37415 30710 MCDONALD'S CORP 13454 14495 MICROSOFT CORP 1039114 1301171 MONDELEZ INTERNATIONAL INC 92919 74663 NETFLIX INC 61501 133698 PACCAR INC 9610 13523 PALANTIR TECHNOLOGIES INC 30060 75630 PAYPAL HOLDINGS, INC 67018 76815 PUBLIC STORAGE INC 85704 89832 RIO TINTO PLC SPONSORED ADR 60915 58810 TESLA MOTORS INC 1032918 1898047 THE COCA-COLA CO 53325 62260 VERIZON COMMUNICATIONS 66590 79980 ENERGY TRANSFER LP 56279 97950 Administrative Fees 11257 11257 Bank Charges 5 5 K-1 Exp ENERGY TRANSFER LP 951 109 State or Local Filing Fees 25 25 K-1 Inc/Loss ENERGY TRANSFER LP -1436 592 990-PF Estimated Tax for 2024 11500 990-PF Extension for 2023 9900