| Name of Stock | End of Year Book Value | End of Year Fair Market Value |
|---|---|---|
| 3M CO - 8,333 SHRS | 593,965 | 1,480,191 |
| ADTALEM GLOBAL ED (DEVRY) INC - 1,666 SH | 33,199 | 49,247 |
| ALCON AG COM (ALC) | 59,710 | 174,240 |
| ALTRIA GROUP INC - 7,733 SH | 2,081 | 366,467 |
| AMERICAN EXPRESS COM - 8,750 SH | 106,474 | 1,431,500 |
| BERKSHIRE HATHAWAY CL A - 11 SH | 149,088 | 4,957,282 |
| BERKSHIRE HATHAWAY CL B - 10,8000 SH | 246,046 | 3,229,200 |
| CENOVUS ENERGY INC - 6,840 SH | 39,105 | 83,995 |
| COCA-COLA COM - 30,092 SH | 11,886 | 1,781,747 |
| ENBRIDGE INC (SPECTRA) - 22,960 SH | 574,023 | 897,277 |
| ILLINOIS TOOL WKS INC - 3,333 SH | 132,988 | 822,584 |
| INTUIT - 5,000 SH | 72,947 | 3,216,100 |
| JOHNSON & JOHNSON COM - 18,180 SH | 1,094,517 | 3,110,053 |
| KRAFT HEINZ INC - 11,111 SH | 257,871 | 398,885 |
| MCCORMICK & CO - 2,000 SH | 30,950 | 193,220 |
| MICROSOFT - 25,000 SH | 494,263 | 8,408,000 |
| MONDELEZ INTL INC - 33,333 SHS | 503,830 | 2,210,311 |
| NORDSON CORP - 16,667 SH | 246,125 | 4,254,585 |
| NORTHERN TR CORP COM - 13,333 SH | 127,764 | 1,594,760 |
| NOVARTIS AG - 10,000 SH | 431,773 | 874,700 |
| PHILIP MORRIS - 7,733 SH | 4,782 | 734,635 |
| PRICE T ROWE GROUP - 3,334 SH | 110,078 | 655,598 |
| PROCTER & GAMBLE - 17,000 SH | 238,045 | 2,780,860 |
| SANOFI - 19,333 SH | 657,669 | 968,583 |
| UNILEVER NV - 3,334 SH | 107,820 | 179,336 |
| W P CAREY INC - 6,667 SH | 174,763 | 547,027 |
| WELLS FARGO & CO - 13,333 SH | 181,834 | 639,717 |
| WILLIAMS CO - 26,666 SH | 397,881 | 694,383 |