David R. Epstein serves as Executive at Rubius Therapeutics, Inc., where they oversee executive responsibilities. Since joining the company, David R. Epstein has executed 89 insider transactions totaling $5.2M, demonstrating a bearish approach to their equity position. Their most recent transaction on Dec 1, 2025 involved selling 250 shares valued at $18.9K.
David R. Epstein currently holds 26,421 shares of Rubius Therapeutics, Inc. (RUBY), valued at approximately $0. This represents their equity stake as Executive.
Based on SEC Form 4 filings, David R. Epstein has been a net seller of RUBY stock. They have purchased $1.0M and sold $4.2M worth of shares.
David R. Epstein's most recent insider trade was on Dec 1, 2025, when they sold 250 shares at $75.55 per share.
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| $90.00 |
| Discretionary |
| Sep 2, 2025 | TEM | $18.4K | Sale | 250 | $73.64 | Discretionary |
| Aug 1, 2025 | TEM | $20.4K | Sale | 370 | $55.16 | Discretionary |
| Jun 13, 2024 | TEM | $0 | Award | 28,514 | $N/A | Discretionary |
| Dec 14, 2023 | SGEN | $3.8M | Disposition | 16,407 | $229.00 | Discretionary |
| Nov 10, 2023 | SGEN | $2.3M | Sale | 10,620 | $213.01 | Discretionary |
| Aug 15, 2023 | SGEN | $0 | Award | 39,650 | $N/A | Discretionary |
| Nov 9, 2022 | SGEN | $0 | Award | 107,389 | $N/A | Discretionary |
| Jun 30, 2022 | EVLO | $0 | Option Exercise | 2,053 | $N/A | Discretionary |
| Jun 30, 2022 | EVLO | $0 | Option Exercise | 2,874 | $N/A | Discretionary |
| Jun 8, 2022 | SNTI | $0 | Award | 112,519 | $N/A | Discretionary |
| May 31, 2022 | EVLO | $0 | Option Exercise | 2,052 | $N/A | Discretionary |
| May 31, 2022 | EVLO | $0 | Option Exercise | 2,873 | $N/A | Discretionary |
| May 27, 2022 | EVLO | $25.0K | Purchase | 17,123 | $1.46 | Discretionary |
| May 19, 2022 | AXLA | $0 | Award | 47,059 | $N/A | Discretionary |
| May 2, 2022 | EVLO | $0 | Option Exercise | 2,873 | $N/A | Discretionary |
| May 2, 2022 | EVLO | $0 | Option Exercise | 2,053 | $N/A | Discretionary |
| Apr 21, 2022 | RUBY | $43.2K | Purchase | 30,000 | $1.44 | Discretionary |
| Mar 31, 2022 | EVLO | $0 | Option Exercise | 2,874 | $N/A | Discretionary |
| Mar 31, 2022 | EVLO | $0 | Option Exercise | 2,052 | $N/A | Discretionary |
| Mar 18, 2022 | AXLA | $0 | Option Exercise | 1,535 | $N/A | Discretionary |
| Mar 16, 2022 | AXLA | $50.0K | Purchase | 26,178 | $1.91 | Discretionary |
| Feb 28, 2022 | EVLO | $0 | Option Exercise | 2,053 | $N/A | Discretionary |
| Feb 28, 2022 | EVLO | $0 | Option Exercise | 2,873 | $N/A | Discretionary |
| Feb 18, 2022 | AXLA | $0 | Option Exercise | 1,534 | $N/A | Discretionary |
| Jan 31, 2022 | EVLO | $0 | Option Exercise | 2,052 | $N/A | Discretionary |
| Jan 31, 2022 | EVLO | $0 | Option Exercise | 2,873 | $N/A | Discretionary |
| Jan 18, 2022 | AXLA | $0 | Option Exercise | 1,535 | $N/A | Discretionary |
| Dec 31, 2021 | EVLO | $0 | Option Exercise | 2,874 | $N/A | Discretionary |