The following table details the insider trading activities
(stock purchases, stock sales, and stock option exercises) of Stump David C since 2010.
This trader's CIK number is 1191235.
At the time of last reporting, Stump David C was the Director of Macrogenics Inc. (stock ticker symbol MGNX).
Also see all insider trading activities at Macrogenics Inc.
| Insider Buying | Insider Sales | Option Exercises | |||||
|---|---|---|---|---|---|---|---|
| Year | Symbol | Shares | Value | Shares | Value | Shares | Value |
| 2025 | MGNX | 0 | $0 | 0 | $0 | 6,500 | $0 |
| 2024 | MGNX | 0 | $0 | 0 | $0 | 4,500 | $0 |
| Insider Buying | Insider Sales | Option Exercises | |||||
|---|---|---|---|---|---|---|---|
| Year | Symbol | Shares | Value | Shares | Value | Shares | Value |
| 2012 | HGSI | 0 | $0 | 0 | $0 | 68,701 | $498,769 |
| 2010 | HGSI | 0 | $0 | 134,000 | $3,818,078 | 134,000 | $1,683,040 |
2. Human Genome Sciences Inc (HGSI)
| Trade Date | Symbol | Trade Type | Shares | Price ($) | Value ($) |
|---|---|---|---|---|---|
| 2025-05-20 | MGNX | Option Ex | 6,500 | .00 | 0 |
| 2024-05-20 | MGNX | Option Ex | 4,500 | .00 | 0 |
| Trade Date | Symbol | Trade Type | Shares | Price ($) | Value ($) |
|---|---|---|---|---|---|
| 2012-07-24 | HGSI | Option Ex | 68,701 | 7.26 | 498,769 |
| 2010-04-01 | HGSI | Sale | 34,000 | 30.72 | 1,044,378 |
| 2010-04-01 | HGSI | Option Ex | 34,000 | 12.56 | 427,040 |
| 2010-03-01 | HGSI | Sale | 50,000 | 28.07 | 1,403,700 |
| 2010-03-01 | HGSI | Option Ex | 50,000 | 12.56 | 628,000 |
| 2010-02-02 | HGSI | Sale | 50,000 | 27.40 | 1,370,000 |
| 2010-02-02 | HGSI | Option Ex | 50,000 | 12.56 | 628,000 |
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 Stump David C (Director of Macrogenics Inc at the time of this reporting) see the Securities and Exchange Commission (SEC) website.