Greef Roderick De serves as Executive at BIOLIFE SOLUTIONS INC, where they oversee executive responsibilities. Since joining the company, Greef Roderick De has executed 244 insider transactions totaling $23.8M, demonstrating a bearish approach to their equity position. Their most recent transaction on Nov 13, 2025 involved selling 31,165 shares valued at $789.4K.
Greef Roderick De currently holds 389,998 shares of BIOLIFE SOLUTIONS INC (BLFS), valued at approximately $0. This represents their equity stake as Executive.
Based on SEC Form 4 filings, Greef Roderick De has been a net seller of BLFS stock. They have purchased $30.4K and sold $23.8M worth of shares.
Greef Roderick De's most recent insider trade was on Nov 13, 2025, when they sold 31,165 shares at $25.33 per share.
Get notified when new Form 4 filings are submitted
| $25.88 |
| Discretionary |
| Nov 11, 2025 | BLFS | $926.2K | Sale | 35,417 | $26.15 | Discretionary |
| Oct 22, 2025 | BLFS | $1.0M | Sale | 37,795 | $27.30 | Discretionary |
| Mar 12, 2024 | BLFS | $120.3K | Sale | 7,249 | $16.60 | Planned |
| Mar 8, 2024 | BLFS | $0 | Award | 29,206 | $N/A | Planned |
| Jan 19, 2024 | BLFS | $44.3K | Sale | 2,642 | $16.76 | Planned |
| Oct 19, 2023 | BLFS | $0 | Award | 394,856 | $N/A | Discretionary |
| Oct 1, 2023 | BLFS | $0 | Award | 362 | $N/A | Discretionary |
| Mar 31, 2023 | BLFS | $0 | Option Exercise | 4,740 | $N/A | Discretionary |
| Jan 19, 2023 | BLFS | $88.1K | Sale | 3,801 | $23.19 | Discretionary |
| Jan 19, 2023 | BLFS | $88.1K | Sale | 3,801 | $23.19 | Discretionary |
| Jan 4, 2023 | BLFS | $0 | Award | 9,647 | $N/A | Discretionary |
| Nov 30, 2022 | BLFS | $698.1K | Sale | 33,905 | $20.59 | Discretionary |
| Nov 29, 2022 | BLFS | $30.3K | Sale | 1,500 | $20.20 | Discretionary |
| Nov 28, 2022 | BLFS | $95.5K | Sale | 4,600 | $20.75 | Discretionary |
| Nov 28, 2022 | BLFS | $115.8K | Sale | 5,400 | $21.44 | Discretionary |
| Nov 23, 2022 | BLFS | $97.7K | Sale | 4,500 | $21.71 | Discretionary |
| Nov 21, 2022 | BLFS | $205.5K | Sale | 9,500 | $21.63 | Discretionary |
| Nov 18, 2022 | BLFS | $33.2K | Sale | 1,500 | $22.13 | Discretionary |
| Nov 16, 2022 | BLFS | $34.8K | Sale | 1,500 | $23.21 | Discretionary |
| Nov 14, 2022 | BLFS | $147.2K | Sale | 6,000 | $24.53 | Discretionary |
| Nov 14, 2022 | BLFS | $330.0K | Sale | 14,000 | $23.57 | Discretionary |
| Oct 7, 2022 | BLFS | $194.0K | Sale | 8,552 | $22.69 | Discretionary |
| Oct 3, 2022 | BLFS | $27.1K | Sale | 1,233 | $21.95 | Discretionary |
| Aug 14, 2022 | BLFS | $0 | Award | 535 | $N/A | Discretionary |
| Jul 29, 2022 | BLFS | $0 | Award | 683 | $N/A | Discretionary |
| Jul 17, 2022 | BLFS | $0 | Award | 828 | $N/A | Discretionary |
| Jul 12, 2022 | BLFS | $144.6K | Sale | 9,158 | $15.79 | Discretionary |
| Jul 3, 2022 | BLFS | $0 | Award | 900 | $N/A | Discretionary |