Ronald L. Olson

Ronald L. Olson discloses dealings in 7 companies, chiefly City National Corp, Berkshire Hathaway Inc and Edison International. We count 48 filings; the first trade dates from 21 August 2006 and the latest from 18 December 2025.

Both buying and selling appear: 26 purchases worth €2.5M, against 7 sales worth €797k. Taken together, the purchases exceed the sales by €1.7M. Unlike grants, an open-market purchase is paid for by the insider, at the market price. Outside the open market, there are 6 option exercises. In 2025 alone, the filings show 1 purchase and no sales.

The median purchase comes to €41k. Of 5 purchases, 2 formed part of a group of insiders buying within 30 days of each other. Purchases made close together by different insiders form what is called a cluster. For 4 purchases whose 90-day window has closed, the share price was higher on day 90 than the day after publication in 75% of cases, with a median move of +13.1%. They describe history only and say nothing certain about the share price ahead.

The record was last updated on 22 December 2025 with an open-market purchase (€108k) in Andersen Group Inc. Typically, a trade is published a median of 4 days after it takes place. The legal deadline for a Form 4 is two business days after the transaction. Every figure here comes from the filings published by SEC (Form 4) and describes the past, not future prices; it is not investment advice.