Houghton Adam has filed 4 insider transactions across 1 company since February 2025.
Most recent transaction: a sale of 699 shares of Upstream Bio, Inc. ($UPB) on March 16, 2026.
Activity breakdown: 0 open-market purchases and 1 sale.
| Transaction Date | Company | Ticker | Insider Name | Title | Transaction Type | Security | Shares | Price | Shares Owned Following | Total Shares Outstanding | % of Owned | % of Outstanding |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| March 16, 2026 | Upstream Bio, Inc. | $UPB | Houghton Adam | Chief Business Officer | S | Common Stock | 699 | $9.29 | 24,301.0000 | 54,038,591 | 2.80% | 0.00% |
| Jan. 2, 2026 | Upstream Bio, Inc. | $UPB | Houghton Adam | Chief Business Officer | A | Common Stock | 25000 | $0.00 | 25,000.0000 | 54,038,591 | 9999.99% | 0.05% |
| Jan. 2, 2026 | Upstream Bio, Inc. | $UPB | Houghton Adam | Chief Business Officer | A | Stock Option (Right to Buy) | 75000 | $0.00 | 75,000.0000 | 54,038,591 | 9999.99% | 0.14% |
| Feb. 6, 2025 | Upstream Bio, Inc. | $UPB | Houghton Adam | Chief Business Officer | A | Stock Option (Right to Buy) | 140000 | $0.00 | 140,000.0000 | 0 | 9999.99% | 0.00% |