UPB
insider transactionsUpstream Bio, Inc. — buys & sells by directors, officers and 10% owners A shareholder owning more than 10% of the company. Must report trades, but usually a weaker signal than an officer or director. (SEC Form 4).
Net shares · 30d
-5.0K
0 buy · 5.0K sell
Net value · 30d
-$30.6K
$0 in · $30.6K out
Sentiment · 30d
Net selling
0% buying · 100% selling
Open-market trades · 30d
5
0 buy · 5.0K sell
Net buy / sell volume
Not enough data to chart yet.
Tap or hover the chart for daily net volume. Green = net buying, red = net selling.
All transactions
-
Grant·A
Director
$0
17.3K sh
Own New
-
Grant·A
Director
$0
17.3K sh
Own New
-
Sell·S
Chief Executive Officer
$12.8K
2.1K sh · $6.10
Own -3%
-
Sell·S
Chief Business Officer
$4.3K
700 sh · $6.10
Own -3%
-
Sell·S
Michael Gray KEY
CFO and COO
$5.2K
853 sh · $6.10
Own -3%
-
Sell·S
Chief Medical Officer
$5.5K
895 sh · $6.10
Own -3%
-
Sell·S
General Counsel
$2.9K
477 sh · $6.10
Own -3%
-
Grant·A
Director
$0
53.3K sh
Own New
-
Grant·A
Director
$0
17.1K sh
Own New
-
Grant·A
Director
$0
17.1K sh
Own New
-
Grant·A
Director
$0
17.1K sh
Own New
-
Grant·A
Director
$0
17.1K sh
Own New
-
Grant·A
Director
$0
17.1K sh
Own New
-
Grant·A
Director
$0
17.1K sh
Own New
| Date▾ | Insider | Type | Shares | Value |
|---|---|---|---|---|
| Jun 17, 2026 | Marcella K. Ruddy | Grant A | 17.3K | $0 |
| Jun 17, 2026 | Harold Edward Fleming | Grant A | 17.3K | $0 |
| Jun 16, 2026 | Everett Rand Sutherland KEY | Sell S | 2.1K | $12.8K |
| Jun 16, 2026 | Adam Houghton | Sell S | 700 | $4.3K |
| Jun 16, 2026 | Michael Gray KEY | Sell S | 853 | $5.2K |
| Jun 16, 2026 | Aaron Deykin | Sell S | 895 | $5.5K |
| Jun 16, 2026 | Allison Ambrose | Sell S | 477 | $2.9K |
| Jun 11, 2026 | Daniella Beckman | Grant A | 53.3K | $0 |
| Jun 9, 2026 | Marcella K. Ruddy | Grant A | 17.1K | $0 |
| Jun 9, 2026 | Ronald C Renaud JR | Grant A | 17.1K | $0 |
| Jun 9, 2026 | Liam Ratcliffe | Grant A | 17.1K | $0 |
| Jun 9, 2026 | Harold Edward Fleming | Grant A | 17.1K | $0 |
| Jun 9, 2026 | Erez Chimovits | Grant A | 17.1K | $0 |
| Jun 9, 2026 | Daniella Beckman | Grant A | 17.1K | $0 |
About UPB insider trading
This page tracks insider transactions for Upstream Bio, Inc. (UPB) reported to the U.S. Securities and Exchange Commission on Form 4. Corporate insiders — directors, executive officers and beneficial owners of more than 10% of the stock — must disclose their trades within two business days. Open-market purchases (code P) and sales (code S) made at the insider's discretion are the most-watched opportunistic signals, while awards (A), option exercises (M) and tax-withholding (F) reflect compensation rather than conviction. Trades marked 10b5-1 were made under a pre-arranged plan and are considered routine. A cluster buy — several insiders buying within a short window — is historically a stronger bullish indicator than any single trade.