Mark Stejbach serves as Executive at TENGION INC, where they oversee executive responsibilities. Since joining the company, Mark Stejbach has executed 68 insider transactions totaling $5.5M, demonstrating a bearish approach to their equity position. Their most recent transaction on Jan 26, 2026 involved receiving (via award) 3,722 shares valued at $0.
Mark Stejbach currently holds 20,569 shares of TENGION INC (TNGN), valued at approximately $0. This represents their equity stake as Executive.
Based on SEC Form 4 filings, Mark Stejbach has been a net seller of TNGN stock. They have purchased $99.0K and sold $5.4M worth of shares.
Mark Stejbach's most recent insider trade was on Jan 26, 2026, when they sold 3,722 shares at $0.00 per share.
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| $35.39 |
| Discretionary |
| Nov 19, 2021 | FLXN | $107.4K | Disposition | 12,631 | $8.50 | Discretionary |
| Jun 24, 2021 | FLXN | $0 | Award | 4,500 | $N/A | Discretionary |
| Jun 10, 2020 | FLXN | $0 | Award | 4,500 | $N/A | Discretionary |
| May 26, 2020 | FLXN | $20.0K | Purchase | 2,051 | $9.75 | Discretionary |
| Mar 3, 2018 | ALKS | $75.1K | Payment | 1,251 | $60.05 | Discretionary |
| Mar 3, 2018 | ALKS | $0 | Option Exercise | 2,813 | $N/A | Discretionary |
| Mar 1, 2018 | ALKS | $134.0K | Payment | 2,334 | $57.41 | Discretionary |
| Mar 1, 2018 | ALKS | $0 | Option Exercise | 5,250 | $N/A | Discretionary |
| Feb 26, 2018 | ALKS | $0 | Option Exercise | 2,625 | $N/A | Discretionary |
| Feb 26, 2018 | ALKS | $67.8K | Payment | 1,167 | $58.12 | Discretionary |
| Feb 23, 2018 | ALKS | $0 | Gift | 1,000 | $N/A | Discretionary |
| Feb 17, 2018 | ALKS | $0 | Option Exercise | 3,000 | $N/A | Discretionary |
| Feb 17, 2018 | ALKS | $59.5K | Payment | 884 | $67.26 | Discretionary |
| Feb 16, 2018 | ALKS | $767.0K | Sale | 10,880 | $70.50 | Discretionary |
| Feb 16, 2018 | ALKS | $188.2K | Option Exercise | 10,880 | $17.30 | Discretionary |
| Jun 16, 2017 | FLXN | $26.9K | Purchase | 1,580 | $17.02 | Discretionary |
| Jun 8, 2017 | ALKS | $173.0K | Option Exercise | 10,000 | $17.30 | Discretionary |
| Jun 8, 2017 | ALKS | $603.4K | Sale | 10,000 | $60.34 | Discretionary |
| May 28, 2017 | ALKS | $0 | Option Exercise | 2,500 | $N/A | Discretionary |
| Mar 3, 2017 | ALKS | $0 | Option Exercise | 2,812 | $N/A | Discretionary |
| Mar 1, 2017 | ALKS | $0 | Option Exercise | 5,250 | $N/A | Discretionary |
| Mar 1, 2017 | ALKS | $145.5K | Payment | 2,437 | $59.71 | Discretionary |
| Feb 26, 2017 | ALKS | $45.1K | Payment | 852 | $52.98 | Discretionary |
| Feb 26, 2017 | ALKS | $0 | Option Exercise | 2,625 | $N/A | Discretionary |
| Jan 9, 2017 | ALKS | $33.0K | Sale | 547 | $60.27 | Discretionary |
| Jan 9, 2017 | ALKS | $9.5K | Option Exercise | 547 | $17.30 | Discretionary |
| Jan 6, 2017 | ALKS | $115.1K | Option Exercise | 6,653 | $17.30 | Discretionary |
| Jan 6, 2017 | ALKS | $399.6K | Sale | 6,653 | $60.07 | Discretionary |