The following table details the insider trading activities
(stock purchases, stock sales, and stock option exercises) of Maas, Jacob since 2025.
This trader's CIK number is 1655513.
At the time of last reporting, Maas, Jacob was the Executive VP of Graham Holdings Co. (stock ticker symbol GHC).
Also see all insider trading activities at Graham Holdings Co.
| Insider Buying | Insider Sales | Option Exercises | |||||
|---|---|---|---|---|---|---|---|
| Year | Symbol | Shares | Value | Shares | Value | Shares | Value |
| 2025 | GHC | 0 | $0 | 0 | $0 | 2,000 | $1,609,600 |
| Trade Date | Symbol | Trade Type | Shares | Price ($) | Value ($) |
|---|---|---|---|---|---|
| 2025-08-19 | GHC | Option Ex | 2,000 | 804.80 | 1,609,600 |
Insider trading activities including stock purchases, stock sales, and option exercises listed in the above table cannot be completely guaranteed as to their accuracy. For more information regarding the trades made by Maas, Jacob (Executive VP of Graham Holdings Co at the time of this reporting) see the Securities and Exchange Commission (SEC) website.