2023-11-08T16:29:18-06:00 2022-12-31 Foundation Source 3333 New Hyde Park Rd Ste 406 New Hyde Park NY 11042 990PF 2022-01-01 136086299 Gustavus and Louise Pfeiffer Research Foundation % Foundation Source GUST 8008391754 Foundation Source 501 Silverside Rd Wilmington DE 198091377 Sarah McCarthy Treasurer 8008391754 2023-10-24 true Sarah McCarthy 999009999 Jeffrey D Haskell P01345770 8008391754 2022 2023-04-26 12:10:37Z X 15514522 X 0 X 930 930 327058 327058 862480 1229240 862480 57000 1247468 1190468 36600 3660 32940 5743 0 0 5743 11250 0 0 11250 16483 3817 382 3435 72622 567 72055 146515 4609 0 125423 450250 750250 596765 4609 0 875673 650703 1185859 89131 128437 128437 113 113 113 19185774 15385972 15385972 19275018 15514522 15514522 136306 76389 1200000 900000 1336306 976389 X 17938712 14538133 17938712 14538133 19275018 15514522 17938712 650703 18589415 4051282 14538133 Publicly-traded Securities 1229240 366760 862480 862480 862480 16483 16483 16483 10344 0 7400 17744 X 0 1261 1261 false false false false false false false true true ME NJ NY 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 Kimberly Herold Alvarez Foundation Source 501 Silverside Rd Wilmington DE 198091377 Dir 1.0 5900 0 0 Lise P Chapman Foundation Source 501 Silverside Rd Wilmington DE 198091377 Dir, Pres 1.0 6300 0 0 Patricia R Herold Foundation Source 501 Silverside Rd Wilmington DE 198091377 Dir/Sec*/Treas*/as sec/as trea 1.0 5900 0 0 H Robert Herold II Foundation Source 501 Silverside Rd Wilmington DE 198091377 Dir, Honorary Chair 1.0 5900 0 0 Matthew Mayro Keeney Foundation Source 501 Silverside Rd Wilmington DE 198091377 Dir, VP 1.0 6300 0 0 Sarah SP McCarthy Foundation Source 501 Silverside Rd Wilmington DE 198091377 Dir/as sec*/as trea*/sec/treas 1.0 6300 0 0 Foundation Source 55 Walls Drive 3rd Fl Fairfield CT 06824 Administrative 66500 16211346 153850 0 16365196 0 16365196 245478 16119718 805986 805986 16483 16483 789503 789503 789503 875673 0 0 0 0 875673 789503 2020 2019 2018 3372860 1124332 1701080 1807348 4663416 12669036 875673 789503 86170 12755206 0 3372860 9382346 1124332 1701080 1807348 4663416 86170 NONE X BOWDOIN COLLEGE 4100 COLLEGE STA BRUNSWICK ME 04011 N/A PC Robert H. Pfeiffer '67 "Pfeif" Fund 100000 LITTLE KIDS ROCK INC PO BOX 43369 MONTCLAIR NJ 07043 N/A PC general & unrestricted 250 NEW JERSEY INSTITUTE OF TECHNOLOGY FOUNDATION UNIVERSITY HEIGHTS NEWARK NJ 07102 N/A PC Pfeiffer Foundation endowed scholarship fund for first gen/low income students in bio-engineering or bio-medical engineering 50000 PFEIFFER UNIVERSITY PO BOX 960 MISENHEIMER NC 28109 N/A PC Milton C. Rose Research Scholars program 150000 STANFORD UNIVERSITY - FINANCIAL AID OFFICE 326 GALVEZ ST STANFORD CA 94305 N/A PC The Medical Scholars Research Program (Pfeiffer Fellows) and Pfeiffer Distinguished Visiting Professor Series 150000 UNIVERSITY OF CONNECTICUT FOUNDATION INCORPORATED 2390 ALUMNI DR UNIT 3206 STORRS CT 06269 N/A PC Pfeiffer Foundation Endowed Scholarship fund for First Gen/Low Income Students in Bio-Engineering or Bio-Medical Engineering 50000 UNIVERSITY OF MAINE FOUNDATION TWO ALUMNI PL ORONO ME 04469 N/A PC Pfeiffer Foundation Endowed Scholarship fund for First Gen/Low Income Students in Bio-Engineering or Bio-Medical Engineering 50000 WASHINGTON UNIVERSITY CAMPUS BOX 1082 ONE BROOKINGS DR ST LOUIS MO 63130 N/A PC Pfeiffer Foundation Endowed Scholarship fund for First Gen/Low Income Students in Bio-Engineering or Bio-Medical Engineering 50000 YALE UNIVERSITY PO BOX 2038 NEW HAVEN CT 06521 N/A PC Pfeiffer Foundation Endowed Scholarship fund for First Gen/Low Income Students in Bio-Engineering or Bio-Medical Engineering 50000 YALE UNIVERSITY PO BOX 2038 NEW HAVEN CT 06521 N/A PC George Robert Pfeiffer fellowship fund 100000 750250 14 930 14 327058 18 862480 DECREASE IN DEFERRED EXCISE TAXES 01 57000 1247468 1247468 false false false false false false false false false false Audit Fees 11250 11250 Patricia R Herold *removed from positions in 2022. Sarah SP McCarthy *removed from positions in 2022. FORM 990-PF, PARTS I AND XIV FORM 990-PF, PARTS I AND XIV: TOTAL FORM 990-PF, PART I, LINE 25, COLUMN (D) AND PART XIV, LINE 3A: $750,250 LESS GRANTS AUTHORIZED IN PRIOR YEARS: $300,000 TOTAL FORM 990-PF, PART I, LINE 25, COLUMN (A): $450,250 VANGUARD BALANCED INDEX FUND I 5186478 5186478 VANGUARD WELLINGTON ADMIRAL FU 10199494 10199494 General Consultations 5743 5743 UNREALIZED LOSSES ON INVESTMENTS 4051282 Administrative Fees 66500 66500 INSURANCE EXPENSES 3778 567 3211 Registered Agent Fee 415 415 State or Local Filing Fees 818 818 Storage Fee 840 840 Website Hosting/Support 120 120 OFFICE SUPPLIES 151 151 decrease in deferred excise taxes 57000 990-PF TAX FOR 2022 16483