2026-06-12T10:16:14-05:00 2025-12-31 Foundation Source 3333 New Hyde Park Rd Ste 406 New Hyde Park NY 11042 990PF 2025-01-01 851573003 Clausen Family Foundation % Foundation Source CLAU 8008391754 Foundation Source 501 Silverside Rd Wilmington DE 198091377 DAVID CESSNA TREASURER 8008391754 2026-06-02 true Jeffrey D Haskell P01345770 8008391754 2025 2025-03-06 01:10:19Z X 2570402 X 100000 460 460 113567 113567 0 214027 114027 0 1811 1568 1568 14369 14369 17748 0 15937 503000 503000 520748 0 518937 -306721 114027 0 908212 2570402 2570402 1968911 2877123 2570402 2570402 0 0 X 2877123 2570402 2877123 2570402 2877123 2570402 2877123 -306721 2570402 2570402 Publicly-traded Securities 1585 1585 1585 1700 0 1700 X 14 101 101 0 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 true false false false false false false false false false false false false false false false false false David Cessna Foundation Source 501 Silverside Rd Wilmington DE 198091377 Treas 2.0 0 0 0 Craig M Clausen Foundation Source 501 Silverside Rd Wilmington DE 198091377 Dir, Pres, Sec 5.0 0 0 0 2199845 473326 0 2673171 0 2673171 40098 2633073 131654 131654 1585 1585 130069 130069 130069 518937 0 0 0 0 518937 130069 2023 2022 2021 5521 184408 163153 10021 719581 1082684 518937 130069 388868 1471552 0 5521 1466031 184408 163153 10021 719581 388868 Craig M Clausen X AMERICAN TRANSPARENCY 2518 BURNSED BLVD 609 THE VILLAGES FL 32163 N/A PC General & Unrestricted 1500 HILLSDALE COLLEGE 33 E COLLEGE ST HILLSDALE MI 49242 N/A PC To support the production of Hillsdale College's free online course on Homer's The Iliad, including filming, editing, and distribution, advancing Hillsdale's mission to make classical education rooted in the Western tradition accessible worldwide 250000 HILLSDALE COLLEGE 33 E COLLEGE ST HILLSDALE MI 49242 N/A PC To support the production of Hillsdale College's free online course on Homer's The Odyssey, including filming, editing, and distribution, advancing Hillsdale's mission to make classical education rooted in the Western tradition accessible worldwide 250000 JUDICIAL WATCH INC 425 3RD ST SW STE 800 WASHINGTON DC 20024 N/A PC General & Unrestricted 1500 503000 14 460 14 113567 114027 114027 false false false false false false false false false false X X 1 Clausen Craig M 749 E Park Bl Apt 519 Boise ID 83712 100000 X Administrative Fees 14306 14306 Postage/Delivery Service 38 38 State or Local Filing Fees 25 25 990-PF Estimated Tax for 2025 1700 990-PF Excise Tax for 2024 111