Insiders / Gray Michael
Gray Michael
CIK 1271411personinsider
Companies
1
First seen
Jan 6, 2026
Last activity
Jun 17, 2026
Companies
| Company | Shares held | Latest |
|---|---|---|
| Upstream Bio, Inc. · UPB | 28,795 | — |
All securities held
2 positions · latest reported per filing
| Company | Security | Shares |
|---|---|---|
| Upstream Bio, Inc. | Common Stock | 28,795 |
| Upstream Bio, Inc. | Stock Option (Right to Buy)Derivative | 91,500 |
Activity
InsidersInstitutions
This person's insider trades (Form 4), across every company.| Date | Action | Company | Value | Shares Δ | Position after | Impact |
|---|---|---|---|---|---|---|
| Mar 16, 2026 | Sell | UPB Upstream Bio, Inc. Common Stock | $7.9K | -852 -2.79% | 29,648 0.05% of shares | low |
| Jun 16, 2026 | Sell | UPB Upstream Bio, Inc. Common Stock | $5.2K | -853 -2.88% | 28,795 0.05% of shares | low |
| Jan 2, 2026 | Grant | UPB Upstream Bio, Inc. Common Stock | $0 | +31K | 30,500 0.06% of shares | low |
| Jan 2, 2026 | Grant | UPB Upstream Bio, Inc. Stock Option (Right to Buy) | — | +92K | 91,500 0.17% of shares | low |