UPB Upstream Bio, Inc.
Upstream Bio, Inc. (UPB) Insider Activity
What the officers, directors and large holders did with their own shares. Only open-market purchases and sales count toward the totals — grants, option exercises and shares withheld for tax are compensation mechanics, not decisions, and they're listed separately below.
How much of that selling was preplanned? 0% planned / 100% discretionary
Largest single sale: $12.8K.
Where they traded
No open-market insider purchase on record.
Recent open-market activity
| Date | Insider | Role | Action | Shares | Price | Value | Held after |
|---|---|---|---|---|---|---|---|
| Sutherland Everett Rand | Chief Executive Officer | Sell | 2,095 | $5.49 | $11.5K | 68,717 −3% of holding | |
| Deykin Aaron | Chief Medical Officer | Sell | 895 | $5.49 | $4.9K | 32,302 −2.7% of holding | |
| GRAY MICHAEL | CFO and COO | Sell | 853 | $5.49 | $4.7K | 27,942 −3% of holding | |
| Houghton Adam | Chief Business Officer | Sell | 700 | $5.49 | $3.8K | 22,901 −3% of holding | |
| Ambrose Allison | General Counsel | Sell | 485 | $5.49 | $2.7K | 15,563 −3% of holding | |
| Sutherland Everett Rand | Chief Executive Officer | Sell | 2,095 | $6.10 | $12.8K | 70,812 −2.9% of holding | |
| Deykin Aaron | Chief Medical Officer | Sell | 895 | $6.10 | $5.5K | 33,197 −2.6% of holding | |
| GRAY MICHAEL | CFO and COO | Sell | 853 | $6.10 | $5.2K | 28,795 −2.9% of holding | |
| Houghton Adam | Chief Business Officer | Sell | 700 | $6.10 | $4.3K | 23,601 −2.9% of holding | |
| Ambrose Allison | General Counsel | Sell | 477 | $6.10 | $2.9K | 16,048 −2.9% of holding |
Form 4s are due within two business days of a transaction, so this is close to real time — unlike the quarterly 13F data on the Institutional tab. A single large sale often reflects a prearranged 10b5-1 plan rather than a fresh view, so read a pattern of sales rather than any one of them.