| Boston Omaha Corporation - Class A Common Stock(BOC) | CL A | 101044105 | $2.8M | 134,155 | 77.3% |
| Boeing Co. - Common Stock(BA) | COM | 097023105 | $684.0K | 5,000 | 19.1% |
| Balchem Corp. - Common Stock(BCPC) | COM | 057665200 | $41.3K | 318,131 | 1.2% |
| Mastercard Incorporated - Common Stock(MA) | COM | 57636Q104 | $37.0K | 117,170 | 1.0% |
| Texas Pacific Land Corp. - Common Stock | COM | 882610108 | $27.2K | 18,302 | 0.8% |
| Broadridge Financial Solutions, Inc. - Common Stock(BR) | COM | 11133T103 | $5.8K | 40,793 | 0.2% |
| Garmin Ltd. - Common Stock(GRMN) | COM | H2906T109 | $4.0K | 40,755 | 0.1% |
| Tejon Ranch Co. - Common Stock(TRC) | COM | 879080109 | $2.7K | 173,701 | 0.1% |
| First Horizon National Corp. - Common Stock(FHN) | COM | 320517105 | $2.2K | 102,296 | 0.1% |
| Berkshire Hathaway Inc. Common Stock(BRK/A) | CL A | 084670108 | $1.6K | 4 | 0.0% |
| Simulations Plus, Inc. - Common Stock(SLP) | COM | 829214105 | $1.4K | 28,596 | 0.0% |
| Franco-Nevada Corporation - Common Stock(FNV) | COM | 351858105 | $1.4K | 10,676 | 0.0% |
| Bel Fuse Inc. - Class B Common Stock(BELFB) | CL B | 077347300 | $1.1K | 67,634 | 0.0% |
| Virtus Investment Partners, Inc. - Common Stock(VRTS) | COM | 92828Q109 | $1.0K | 6,076 | 0.0% |
| Chase Corporation - Common Stock(CCFEUR) | COM | 16150R104 | $827 | 10,626 | 0.0% |
| Dolby Laboratories - Common Stock(DLB) | COM | 25659T107 | $621 | 8,679 | 0.0% |
| Metropolitan Bank Holding Corp. - Common Stock(MCB) | COM | 591774104 | $542 | 7,811 | 0.0% |
| Bel Fuse Inc. - Class A Common Stock(BELFA) | CL A | 077347201 | $504 | 23,434 | 0.0% |
| Flushing Financial Corporation - Common Stock(FFIC) | COM | 343873105 | $462 | 21,745 | 0.0% |
| Black Knight Inc. - Common Stock(BKIEUR) | COM | 09215C105 | $186 | 2,852 | 0.0% |
| Psychemedics Corp. - Common Stock | COM | 744375205 | $127 | 20,000 | 0.0% |
| Lixte Biotechnology Holdings Inc. - Common Stock | COM | 539319202 | $124 | 166,667 | 0.0% |