| Insider | Role | Shares | Value | Buys | Sells |
|---|---|---|---|---|---|
| Date | Ticker | Insider | Role | Type | Shares | Price | Value | Chg% | SEC |
|---|---|---|---|---|---|---|---|---|---|
| Insider | Role | Shares | Value | Buys | Sells |
|---|---|---|---|---|---|
| Date | Ticker | Insider | Role | Type | Shares | Price | Value | Chg% | SEC |
|---|---|---|---|---|---|---|---|---|---|
Director
4 companies
Ronald L Olson is Director at ANDG, with reported holdings spanning 4 companies. Ronald L Olson's net worth is not public. Form 4 filings only show shares in the companies where this person is an insider; those holdings are worth an estimated $791K at current prices.
Our model assigns Ronald L Olson a middling insider score of 53/100, based on 4 past trades. Over a 12-month horizon, 66.7% of those trades were profitable, with an average 12-month return of +8.1%.
Ronald L Olson's largest disclosed position is in ANDG as Director, worth about $519K. Net of sales, the ANDG filings show accumulation of 7,896 shares.
Ronald L Olson has 9 Form 4 filings on record from March 2016 to December 2025, across 4 companies: Director at Andersen Group (ANDG), 2025; Director at Berkshire Hathaway (BRK-B), 2016–2023; Director at Western Asset Premier Bond Fund (WEA), 2022–2023, and 1 more.
The 15 reported transactions were 6 open-market purchases, 3 other transactions, 2 conversions and 2 open-market sales, plus smaller numbers of other types.
Counted by filing, the open-market trades come to 4 purchases worth about $1.9M and 2 sales worth about $217K.
The largest open-market purchase was 4,000 shares of BRK-B at an average $222.33 on December 18, 2020, about $889K.
The largest open-market sale was 18,000 shares of WEA at an average $11.20 on January 20, 2023, about $202K. Twelve months later WEA was down 3%.
| Date | Ticker | Role | Type | Shares | Price | Value | Chg% | 3M | 12M | SEC |
|---|---|---|---|---|---|---|---|---|---|---|
| Dec 18, 2025 | ANDG Andersen Group Inc. | Director | Buy | 7,896 | $16.00 | $126,336.00 | New | +11.3% | - | |
| Jan 20, 2023 | WEA Western Asset Premier Bond Fund | Director | Sell | 18,000 | $11.20 | $201,600.00 | -90.0% | -6.8% | -2.5% | |
| Dec 23, 2022 | WEA Western Asset Premier Bond Fund | Director | Buy | 20,000 | $11.19 | $223,898.00 | New | -11.3% | -2.0% | |
| Jul 5, 2022 | BRK-B Berkshire Hathaway Inc | Director | Buy | 2,410 | $274.35 | $661,182.75 | -269.3% | -1.0% | +23.9% | |
| Dec 18, 2020 | BRK-B Berkshire Hathaway Inc | Director | Buy | 4,000 | $222.33 | $889,334.80 | +276.6% | - | - | |
| Jan 10, 2020 | PAI Western Asset Investment Grade Income Fund Inc. | Director | Sell | 1,000 | $15.84 | $15,838.00 | -100% | - | - |