Upstream Bio, Inc. (UPB) insider trading.
In Q3 2026, insiders at Upstream Bio, Inc. reported 5 non-derivative transactions on 5 Forms 3, 4 and 5: 0 open-market purchases and 5 sales worth $28K.
- Transactions
- 5
- Purchases (P)
- 0
- Sales (S)
- 5
- Net shares, P minus S
- -5,028
- Insiders
- 5
- Last filed
- 2026-09-17
Insiders
| Insider | Relationship | Transactions | Buys | Sales |
|---|---|---|---|---|
| Ambrose Allison | Officer · General Counsel | 1 | 0 | 1 |
| Gray Michael | Officer · CFO and COO | 1 | 0 | 1 |
| Houghton Adam | Officer · Chief Business Officer | 1 | 0 | 1 |
| Sutherland Everett Rand | Director, Officer · Chief Executive Officer | 1 | 0 | 1 |
| Deykin Aaron | Officer · Chief Medical Officer | 1 | 0 | 1 |
Transactions
| Date | Insider | Code | Shares | Price | Owned after | Filing |
|---|---|---|---|---|---|---|
| 2026-09-16 | Ambrose Allison | S (D) | 485 | $5.49 | 15,563 | Form 4 |
| 2026-09-16 | Gray Michael | S (D) | 853 | $5.49 | 27,942 | Form 4 |
| 2026-09-16 | Houghton Adam | S (D) | 700 | $5.49 | 22,901 | Form 4 |
| 2026-09-16 | Sutherland Everett Rand | S (D) | 2,095 | $5.49 | 68,717 | Form 4 |
| 2026-09-16 | Deykin Aaron | S (D) | 895 | $5.49 | 32,302 | Form 4 |
Transaction codes in this quarter
Get UPB insider transactions through the API
curl "https://sec-api.dev/api/v1/insider-transactions?period=2026q3&cik=2022626&limit=100" \
-H "Authorization: Bearer $SEC_API_KEY"Insider trading API guide · UPB company page · Upstream Bio, Inc. on SEC.gov
Questions
Are insiders buying or selling Upstream Bio, Inc. (UPB)?
In Q3 2026, insiders at Upstream Bio, Inc. reported 5 non-derivative transactions on 5 Forms 3, 4 and 5: 0 open-market purchases and 5 sales worth $28K. Grants, tax withholding and option exercises are counted as transactions but are not purchases or sales.
Where do these Upstream Bio, Inc. insider trades come from?
From the SEC Insider Transactions Data Sets for Q3 2026, which republish the Forms 3, 4 and 5 filed on EDGAR. Each row links to its filing on SEC.gov.
Plain-text version for agents and LLMs: /insider-trading/upb.md
Independent. Not affiliated with, endorsed by, or sponsored by the U.S. Securities and Exchange Commission. Data is reproduced from public SEC filings and datasets. Not investment advice.