| Name of Stock | End of Year Book Value | End of Year Fair Market Value |
|---|---|---|
| 3M CO - 8,333 SH | 459,574 | 1,456,525 |
| ADTALEM GLOBAL ED (DEVRY) INC - 1,666 SH | 33,199 | 56,561 |
| ALCON AG COM (ALC) | 59,710 | 131,960 |
| ALTRIA GROUP INC - 7,733 SH | 2,081 | 317,053 |
| AMERICAN EXPRESS COM - 8,750 SH | 88,772 | 1,057,963 |
| BERKSHIRE HATHAWAY CL A - 11 SH | 149,265 | 3,825,965 |
| BERKSHIRE HATHAWAY CL B - 10,8000 SH | 246,046 | 2,504,196 |
| BP PLC COM - 7,252 SH | 10,255 | 148,811 |
| CENOVUS ENERGY INC - 6,840 SH | 39,105 | 41,314 |
| COCA-COLA COM - 30,092 SH | 11,886 | 1,650,245 |
| DIAGEO PLC - 3,334 SH | 251,597 | 529,473 |
| EMERSON ELEC CO - 5,333 SH | 147,404 | 428,613 |
| ENBRIDGE INC (SPECTRA) - 22,960 SH | 555,155 | 734,490 |
| ILLINOIS TOOL WKS INC - 3,333 SH | 132,920 | 679,532 |
| INTUIT - 5,000 SH | 72,947 | 1,899,250 |
| JOHNSON & JOHNSON COM - 18,180 SH | 734,773 | 2,861,168 |
| KRAFT HEINZ INC - 11,111 SH | 254,330 | 385,107 |
| MCCORMICK & CO - 2,000 SH | 30,950 | 191,200 |
| MICROSOFT - 25,000 SH | 488,377 | 5,560,500 |
| MONDELEZ INTL INC - 33,333 SHS | 502,476 | 1,948,981 |
| NORDSON CORP - 16,667 SH | 246,125 | 3,349,234 |
| NORTHERN TR CORP COM - 13,333 SH | 127,764 | 1,241,836 |
| NOVARTIS AG - 10,000 SH | 431,773 | 944,300 |
| PHILIP MORRIS - 7,733 SH | 4,782 | 640,215 |
| PRICE T ROWE GROUP - 3,334 SH | 87,406 | 504,734 |
| PROCTER & GAMBLE - 17,000 SH | 172,080 | 2,365,380 |
| SANOFI - 19,333 SH | 657,669 | 939,390 |
| SCHLUMBERGER LTD - 4,333 SH | 170,378 | 94,589 |
| UNILEVER NV - 3,334 SH | 107,820 | 201,240 |
| W P CAREY INC - 6,667 SH | 189,473 | 470,557 |
| WELLS FARGO & CO - 13,333 SH | 181,834 | 402,390 |
| WILLIAMS CO - 26,666 SH | 456,085 | 534,653 |