Ronald L. Olson bought Andersen Group Inc. ($ANDG) shares once on the open market in the last 365 days for a total of about $126 thousand. His most recent purchase occurred on December 18, 2025. Among 4983 individual insiders, his purchases rank 1949th by amount, below the average of $1.46 million across 3.29 transactions. Olson made no open market sales in the period.
| Transaction Date | Company | Ticker | Insider Name | Title | Transaction Type | Security | Shares | Price | Shares Owned Following | Total Shares Outstanding | % of Owned | % of Outstanding |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Dec. 18, 2025 | Andersen Group Inc. | $ANDG | OLSON RONALD L | Not found | P | Class A Common Stock | 7896 | $16.00 | 7,896.0000 | 0 | 9999.99% | 0.00% |
| May 17, 2023 | BERKSHIRE HATHAWAY INC | $BRK-A | OLSON RONALD L | Director | C | Class B Common Stock | 1500 | $0.00 | 29,696.0000 | 2,203,313,642 | 5.32% | 0.00% |
| May 18, 2023 | BERKSHIRE HATHAWAY INC | $BRK-A | OLSON RONALD L | Director | J | Class B Common Stock | 1562 | $0.00 | 28,134.0000 | 2,203,313,642 | 5.26% | 0.00% |
| May 19, 2013 | BERKSHIRE HATHAWAY INC | $BRK-A | OLSON RONALD L | Director | J | Class B Common Stock | 781 | $0.00 | 28,134.0000 | 0 | 2.70% | 0.00% |
| May 17, 2023 | BERKSHIRE HATHAWAY INC | $BRK-A | OLSON RONALD L | Director | C | Class A Common | 1 | $0.00 | 137.0000 | 2,203,313,642 | 0.72% | 0.00% |
| May 18, 2023 | BERKSHIRE HATHAWAY INC | $BRK-A | OLSON RONALD L | Director | J | Class A Common Stock | 24 | $0.00 | 11.0000 | 2,203,313,642 | 68.57% | 0.00% |