Insiders / Lutz Robert Matthew
Lutz Robert Matthew
CIK 1786203personinsider
Companies
3
First seen
Jan 8, 2021
Last activity
Jul 24, 2026
Holdings
3 companies · 5 positionsView all →
| Company / security | Shares held | Latest |
|---|---|---|
| iBio, Inc. · IBIO | 102,165 | — |
| Common stock | 102,165 | Nov 11, 2022 |
| Options | 400,000 | Aug 29, 2022 |
| Mast Therapeutics, Inc. · MSTX | 328,977 | — |
| Common stock | 328,977 | Jul 15, 2026 |
| Options | 70,000 | Jul 15, 2026 |
| Strongbridge Biopharma plc · SBBP | 181,333 | — |
| Ordinary shares | 181,333 | Feb 22, 2021 |
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 |
|---|---|---|---|---|---|---|
| Dec 14, 2025 | Other Withheld for taxes | MSTX Mast Therapeutics, Inc. Common Stock | $468.9K | -68K -18.73% | 293,977 0.14% of shares | low |
| Feb 13, 2025 | Other Withheld for taxes | MSTX Mast Therapeutics, Inc. Common Stock | $108.3K | -38K -9.57% | 361,737 0.18% of shares | low |
| Feb 22, 2021 | Other Withheld for taxes | SBBP Strongbridge Biopharma plc Ordinary Shares |