Insiders / Daniel Thomas O
Daniel Thomas O
CIK 1538894personinsider
Companies
4
First seen
Feb 4, 2015
Last activity
Jun 5, 2026
Securities
4 companies · 5 positionsView all →
| Company / security | Shares held | Latest |
|---|---|---|
| Gossamer Bio, Inc. · GOSS | — | — |
| Options | 115,000 | Jun 4, 2026 |
| Celgene Corp /De/ · CELG | 53,376 | — |
| Common stock | 53,376 | Mar 1, 2015 |
| Options | 10,175 | Feb 2, 2015 |
| Magenta Therapeutics, Inc. · DNTH | — | — |
| Options | 20,000 | Jun 28, 2022 |
| Zafgen, Inc. · LRMR | — | — |
| Options | 8,300 | May 12, 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 |
|---|---|---|---|---|---|---|
| Feb 6, 2015 | Other Withheld for taxes | CELG Celgene Corp /De/ Common Stock | $983.0K | -8K -15.20% | 46,190 | low |
| Mar 1, 2015 | Other Withheld for taxes | CELG Celgene Corp /De/ Common Stock | $528.4K | -4K -7.97% | 50,176 | low |
| Mar 1, 2015 | Exercise Option exercise | CELG Celgene Corp /De/ Common Stock | $0 | +8K +18.04% |