Insiders / Arkowitz David
Arkowitz David
CIK 1296999personinsider
Companies
5
First seen
Jan 7, 2021
Last activity
Nov 24, 2025
Securities
5 companies · 7 positionsView all →
| Company / security | Shares held | Latest |
|---|---|---|
| Seres Therapeutics, Inc. · MCRB | 182,442 | — |
| Common stock | 182,442 | Feb 16, 2024 |
| Restricted units | 31,875 | Feb 15, 2024 |
| Options | 287,905 | Feb 14, 2024 |
| Flexion Therapeutics Inc · FLXN | 220,719 | — |
| Common stock | 220,719 | May 10, 2021 |
| Options | 20,000 | Mar 1, 2021 |
| iBio, Inc. · IBIO | 18,382 | — |
| Common stock | 18,382 | Jan 10, 2025 |
| Options | 13,500 | Nov 20, 2025 |
| F-star Therapeutics, Inc. · FSTX | 0 | — |
| Yumanity Therapeutics, Inc. · KA | 0 | — |
Ownership percentages elsewhere on the site count common and ordinary shares only, because that is what shares outstanding are measured in. Everything above is a real holding; not all of it is a share of the company.
Activity
InsidersInstitutions
This person's trades in company stock, across every company.| Date | Action | Company | Value | Shares Δ | Position after | Impact |
|---|---|---|---|---|---|---|
| Jul 5, 2022 | Grant Grant or award | MCRB Seres Therapeutics, Inc. COMMON STOCK | $200.0K | +63K +3174.60% | 65,492 0.66% of shares | low |
| Jan 5, 2021 | Sell Open-market sale | FLXN Flexion Therapeutics Inc Common Stock | $67.6K | -6K -3.87% | 151,048 | low |
| Mar 8, 2023 | Other Shares tendered | FSTX F-star Therapeutics, Inc. Common Stock | $59.7K |