2025-11-17T10:28:30-06:00 2024-12-31 Foundation Source 3333 New Hyde Park Rd Ste 406 New Hyde Park NY 11042 990PF 2024-01-01 205700615 Mackenzie Family Foundation % Foundation Source MACK 8008391754 Foundation Source 501 Silverside Rd Wilmington DE 198091377 SHAWN T MACKENZIE SECRETARY 8008391754 2025-11-04 true true Jeffrey D Haskell P01345770 8008391754 2024 2025-03-06 01:10:19Z X 70604150 X 4404168 8142 8142 339129 339129 3554713 2241212 4157907 2273023 1766742 10579175 6271920 0 29150 0 0 29150 3841 3841 180350 131 1644016 1316505 84822 1857357 1320477 0 113972 5025000 5025000 6882357 1320477 0 5138972 3696818 4951443 0 650 96464 96464 3051547 2952850 3051547 3051547 7801513 10422550 10305918 42243898 43125168 57150221 52998911 56695729 70604150 0 0 X 52998911 56695729 52998911 56695729 52998911 56695729 52998911 3696818 56695729 56695729 Publicly-traded Securities 2241212 1134059 1107153 1107153 Passthrough K1 Capital Gain/(Loss) 3050754 4157907 68825 68825 68825 79900 0 79900 X 0 11075 11075 false false false false false true true false true true CA true false true 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 Alyson Mackenzie Foundation Source 501 Silverside Rd Wilmington DE 198091377 Dir 1.0 0 0 0 Andrew Mackenzie Foundation Source 501 Silverside Rd Wilmington DE 198091377 Dir 1.0 0 0 0 Douglas Mackenzie Foundation Source 501 Silverside Rd Wilmington DE 198091377 Dir, Pres 1.0 0 0 0 Shawn Mackenzie Foundation Source 501 Silverside Rd Wilmington DE 198091377 Dir, Sec, Treas 1.0 0 0 0 Foundation Source 55 Walls Drive Suite 302 Fairfield CT 06824 Administrative 84602 10720081 203155 57392528 68315764 0 68315764 1024736 67291028 3364551 3364551 68825 77172 145997 3218554 3218554 3218554 5138972 0 0 0 0 5138972 3218554 2885776 5138972 2885776 2253196 0 0 965358 0 0 Douglas Mackenzie Shawn Mackenzie X COMMUNITY FOUNDATION OF JACKSON HOLE PO BOX 574 JACKSON WY 83001 N/A PC Mackenzie Family Fund 200000 COMMUNITY FOUNDATION OF JACKSON HOLE PO BOX 574 JACKSON WY 83001 N/A PC CoChallenger program for the Old Bill's Fun Run 100000 EAST PALO ALTO TENNIS AND TUTORING PO BOX 60597 PALO ALTO CA 94306 N/A PC General & Unrestricted 25000 EASTSIDE COLLEGE PREPARATORY SCHOOL INC 1041 MYRTLE ST E PALO ALTO CA 94303 N/A PC Outdoor Education Program 35000 EAT LEARN PLAY FOUNDATION 647 4TH ST OAKLAND CA 94607 N/A PC General & Unrestricted 100000 GRAND TETON NATIONAL PARK FOUNDATION PO BOX 249 MOOSE WY 83012 N/A PC Kelly Parcel campaign 2000000 GRAND TETON NATIONAL PARK FOUNDATION PO BOX 249 MOOSE WY 83012 N/A PC Annual Fund 10000 LUCILE PACKARD FOUNDATION FOR CHILDRENS HEALTH 400 HAMILTON AVE SUITE 340 PALO ALTO CA 94301 N/A PC The Mackenzie Family NICU Facilities Fund 2000000 LUCILE PACKARD FOUNDATION FOR CHILDRENS HEALTH 400 HAMILTON AVE SUITE 340 PALO ALTO CA 94301 N/A PC Children's Health Advocacy 250000 NATIONAL OUTDOOR LEADERSHIP SCHOOL 284 LINCOLN ST LANDER WY 82520 N/A PC Annual Scholarship Fund 10000 PGA TOUR FIRST TEE FOUNDATION INC PO BOX 3055 PONTE VEDRA BEACH FL 32004 N/A PC General & Unrestricted 150000 SUMMER SEARCH 304 12TH ST STE 4A OAKLAND CA 94607 N/A PC Summer Search Silicon Valley 20000 UNIVERSITY OF VIRGINIA DARDEN SCHOOL FOUNDATION PO BOX 7726 CHARLOTTESVILLE VA 22906 N/A SO III FI Chaplinsky Fund 25000 UNIVERSITY OF VIRGINIA DARDEN SCHOOL FOUNDATION PO BOX 7726 CHARLOTTESVILLE VA 22906 N/A SO III FI Bruner Fund for transformational learning 50000 WOMENS SPORTS FOUNDATION 247 W 30TH ST 5TH FL NEW YORK NY 10001 N/A PC The Tara Vanderveer Fund for the Advancement of Women in Coaching 50000 5025000 14 8142 14 339129 525990 190867 18 3363846 K-1 Inc/Loss 525990 517502 14 1733019 Federal Tax Refund 01 19242 STATE TAX REFUND 01 2663 CLASS ACTION LAWSUIT PROCEEDS 01 597 708369 5466638 6175007 false false false false false false false false false false X X 1 Mackenzie CRT IV 737 Bryant Street Palo Alto CA 94301 4404092 X Audit Fees 29150 29150 PART I LINE 6A (990-PF) PART I LINE 6A (990-PF) RECONCILIATION OF NET GAIN/(LOSS) FROM SALES OF ASSETS NOT INCLUDED IN PART IV TOTAL INCLUDED IN PART IV: (DETAILS BELOW) NET GAIN/(LOSS): $3,363,846 TOTAL NOT INCLUDED IN PART IV: PASSTHROUGH K-1 CAPITAL GAIN/(LOSS) - UBI NET GAIN/(LOSS): $190,867 TOTAL PART I, LINE 6A: $3,554,713 DETAILS OF ASSETS INCLUDED IN PART IV: PUBLICLY-TRAIDED SECURITIES GROSS SALES PRICE: $2,241,212 BOOK BASIS: $1,928,120 NET GAIN/(LOSS): $313,092 PASSTHROUGH K-1 CAPITAL GAIN/(LOSS) - NON UBI NET GAIN/(LOSS): $3,050,754 ALLIANCEBERN GLOBAL BOND ADV 3998572 3862788 ALLIANCEBERNSTEIN GLOBAL CORE 2372516 2602822 BERNSTEIN INTERMED DURATION IN 4051462 3840308 MAKENA CAPITAL ASSOC (US) LP 43125168 57150221 Administrative Fees 84602 84602 K-1 Exp MAKENA CAPITAL ASSOC ( 1559194 1316505 State or Local Filing Fees 220 220 K-1 Inc/Loss MAKENA CAPITAL ASSOC (US) LP 2250521 1766145 Class Action Lawsuit Proceeds 597 597 Federal Tax Refund 19242 State Tax Refund 2663 Investment Management Services 3841 3841 Mackenzie CRT IV 737 Bryant Street Palo Alto CA 94301 990-PF Estimated Tax for 2024 72500 990-T Extension for 2023 76200 Foreign Tax Paid 131 131 State Income Tax 2023 31519