The following table details the insider trading activities
(stock purchases, stock sales, and stock option exercises) of Herndon Mark since 2018.
This trader's CIK number is 1754318.
At the time of last reporting, Herndon Mark was the Chief Financial Officer of Horizon Kinetics Holding Corp. (stock ticker symbol HKHC).
Also see all insider trading activities at Horizon Kinetics Holding Corp.
| Insider Buying | Insider Sales | Option Exercises | |||||
|---|---|---|---|---|---|---|---|
| Year | Symbol | Shares | Value | Shares | Value | Shares | Value |
| 2020 | SFE | 2,000 | $12,500 | 0 | $0 | 0 | $0 |
| 2018 | SFE | 10,000 | $94,400 | 0 | $0 | 0 | $0 |
| Insider Buying | Insider Sales | Option Exercises | |||||
|---|---|---|---|---|---|---|---|
| Year | Symbol | Shares | Value | Shares | Value | Shares | Value |
| 2025 | HKHC | 20 | $803 | 0 | $0 | 0 | $0 |
1. Safeguard Scientifics Inc (SFE)
2. Horizon Kinetics Holding Corp (HKHC)
| Trade Date | Symbol | Trade Type | Shares | Price ($) | Value ($) |
|---|---|---|---|---|---|
| 2020-05-06 | SFE | Buy | 2,000 | 6.25 | 12,500 |
| 2018-12-07 | SFE | Buy | 10,000 | 9.44 | 94,400 |
| Trade Date | Symbol | Trade Type | Shares | Price ($) | Value ($) |
|---|---|---|---|---|---|
| 2025-06-04 | HKHC | Buy | 20 | 40.18 | 803 |
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 Herndon Mark (Chief Financial Officer of Horizon Kinetics Holding Corp at the time of this reporting) see the Securities and Exchange Commission (SEC) website.