2024-05-01T13:00:30-05:00 2023-12-31 030498867 LOVETT BOOKMAN HARMON MARKS LLP 1001 LIBERTY AVENUE SUITE 1150 PITTSBURGH PA 15222 990PF 2023-01-01 202502389 MATHIESON FAMILY FOUNDATION MATH 4129636160 103 BRILLIANT AVENUE SUITE A PITTSBURGH PA 15215 PETER F MATHIESON DIRECTOR & PRESIDENT 4129636160 2024-04-30 1 PETER MATHIESON 999009999 0 ROBERT S LANG P00144610 4123922220 2 AAL1 IAL1 2023 2023-04-26 12:10:37Z X 1413943 X X 17737 17737 56556 186045 56556 74293 74293 0 0 0 3393 0 3393 3000 0 3000 3013 0 0 9406 0 6393 68000 68000 77406 0 74393 -3113 74293 22564 13572 13572 675830 752581 1309760 141263 72831 90380 0 231 231 839657 839215 1413943 0 0 X 0 0 0 0 839657 839215 839657 839215 839657 839215 839657 -3113 2671 839215 0 839215 275 SHS LIBERTY MEDIA P 2023-03-07 19759 9828 9931 9931 275 SHS LIBERTY MEDIA P 2023-03-10 18772 9446 9326 9326 300 SHS FORTREA HOLDINGS INC P 2023-08-02 9081 6045 3036 3036 1,200 SHS VANGUARD FTSE DEVELOPED P 2023-08-02 55512 46947 8565 8565 23 SHS ATLANTA BRAVES HLDGS P 2023-07-20 847 387 460 460 300 SHS ANHEUSER BUSH INBEV P 2023-09-21 17049 16844 205 205 300 SHS ALPHABET INC P 2023-09-21 39501 18035 21466 21466 400 SHS FIRST TRUST NORTH P 2023-09-21 11061 10002 1059 1059 300 SHS VANGUARD FTSE DEVELOPED P 2023-09-21 13339 11483 1856 1856 34 SHS LIBERTY MEDIA CORP P 2023-10-17 1109 466 643 643 FRAC SHR ATLANTA BRAVES HLDGS P 2023-07-20 7 3 4 4 FRAC SHR LIBERTY MEDIA P 2023-08-07 8 3 5 5 56556 1033 0 1033 0 1033 2220 0 0 0 2220 0 1187 1187 0 0 0 0 0 0 0 0 0 0 0 0 1 PA 1 0 0 0 0 1 N/A PETER F MATHIESON 4129636160 103 BRILLIANT AVENUE SUITE A PITTSBURGH PA 15215 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 PETER F MATHIESON 103 BRILLIANT AVENUE - SUITE A PITTSBURGH PA 15215 DIRECTOR & PRESIDENT 1.00 0 0 0 ANDREW F MATHIESON 300 DRAKES LANDING ROAD SUITE 250 GREENBRAE CA 94904 DIRECTOR & VICE PRESIDENT 1.00 0 0 0 MARGARET M CONVER 15 PASTERN LANE BLUE BELL PA 19422 DIRECTOR & TREASURER/ SECRETARY 1.00 0 0 0 NONE 0 NONE 0 0 1308753 20317 0 1329070 0 0 1329070 19936 1309134 65457 65457 1033 1033 64424 0 64424 0 64424 74393 0 74393 64424 10728 0 0 74393 10728 0 0 63665 0 0 0 0 0 0 0 0 759 0 0 0 X ALLEGHENY RIVER TRAIL PARK 285 RIVER AVENUE PITTSBURGH PA 15215 NONE PUBLIC CHARITY GENERAL SUPPORT 5000 BETSY'S PARK PO BOX 688 HOLDERNESS NH 03245 NONE PUBLIC CHARITY GENERAL SUPPORT 2500 BIG SKY YOUTH EMPOWERMENT 225 E MENDENHALL STREET BOZEMAN MT 59715 NONE PUBLIC CHARITY GENERAL SUPPORT 5000 BUCKNELL UNIVERSITY ONE DENT DRIVE LEWISBURG PA 17837 NONE EDUCATION AW & AR MATHIESON SCHOLARSHIP 2500 BUCKNELL UNIVERSITY ONE DENT DRIVE LEWISBURG PA 17837 NONE EDUCATION AW & AR MATHIESON SCHOLARSHIP 2500 CONNECTICUT COLLEGE 270 MOHEGAN AVE NEW LONDON CT 06320 NONE EDUCATION SCHOLARSHIP FUND 2500 DEERWOOD FOUNDATION 133 EDGEWOOD ROAD CORNWALL CT 05753 NONE PUBLIC CHARITY FOREVER SQUAM / ANUAL SUPPORT 5000 DEERWOOD FOUNDATION 133 EDGEWOOD ROAD CORNWALL CT 05753 FOREVER SQUAM /ANNUAL SUPPORT 5000 FRIENDS OF HOLDERNESS LIBRARY 866 US ROUTE 3 HOLDERNESS NH 03245 NONE PUBLIC CHARITY GENERAL SUPPORT 2500 GALLATIN RIVER TASK FORCE PO BOX 160513 BIG SKY MT 59716 NONE PUBLIC CHARITY GENERAL SUPPORT 3000 MENTORING PARTNERSHIP OF SWPA 1815 METROPOLITAN STREET PITTSBURGH PA 15233 NONE PUBLIC CHARITY GENERAL SUPPORT 3000 SQUAM LAKES ASSOCIATION 534 US ROUTE 3 HOLDERNESS NH 03245 NONE PUBLIC CHARITY GENERAL SUPPORT 2500 SQUAM LAKES CONSERVATION SOCIETY PO BOX 696 HOLDERNESS NH 03245 NONE PUBLIC CHARITY GENERAL SUPPORT 5000 SQUAM LAKES NATURAL SCIENCE CENTER 23 SCIENCE CENTER ROAD HOLDERNESS NH 03245 NONE PUBLIC CHARITY GENERAL SUPPORT 2500 STENTON 4601 N 18TH STREET PHILADELPHIA PA 19140 NONE PUBLIC CHARITY GENERAL SUPPORT 5000 SWEETWATER SPECTRUM 369 FIFTH STREET WEST SONOMA CA 95476 NONE PUBLIC CHARITY GENERAL SUPPORT 2500 THE ARTS COUNCIL OF BIG SKY PO BOX 160308 BIG SKY MT 59716 NONE PUBLIC CHARITY PROGRAM SUPPORT 2500 THE SAVOY COMPANY ENDOWMENT 730 ASTOR PLACE NORRISTOWN PA 19401 NONE PUBLIC CHARITY GENERAL SUPPORT 6000 UNITED SOUTH END SETTLEMENTS 48 RUTLAND STREET BOSTON MA 02118 NONE PUBLIC CHARITY CAMP HALE PROGRAM 1000 YELLOW DOG COMMUNITY & CONSERVATION FOUNDATION 213 SOUTH WILSON AVE BOZEMAN MT 59715 NONE PUBLIC CHARITY GENERAL SUPPORT 2500 68000 0 14 17737 18 56556 0 74293 0 74293 0 0 0 0 0 0 0 0 0 0 BOOKKEEPING 3000 0 3000 CORPORATE STOCKS 752581 1309760 OTHER ASSETS AT COST 72831 90380 LBHM 3393 0 3393 ACCRUED INCOME 231 231 COST BASIS ADJUSTMENT 2671 FOREIGN TAX 59 0 0 EXCISE TAX 2954 0 0