Upstream Bio, Inc. — insider transactions
1 transactions on record · CIK 2022626
Aggregates
computed from the filings belowPurchases, 12m
0
count of open-market buys
Sales, 12m
1
count of open-market sales
Buy / sell ratio, 12m
0.00
purchases per sale
Distinct insiders, 12m
1
Bought, 3m
$0
Sold, 3m
$2.7K
Median disclosure lag
1.0 d
trade date to filing date
Largest single trade, 24m
$2.7K
2026-09-16
Director share, 12m
0.0%
of transactions where role is stated
Current run
1 sells
consecutive same-direction transactions
Net 3m flow
-$2.7K
purchases minus sales
Total on record
1
Transactions
1 most recent shown| Disclosed | Traded | Lag, d | Insider | Role | Transaction | Shares | Price | Value | Source |
|---|---|---|---|---|---|---|---|---|---|
| 2026-09-17 | 2026-09-16 | 1 | Ambrose Allison | General Counsel | Open market sale | 485 | $5.49 | $2.7K | filing |