Form 4 holding
Director
Upstream Bio, Inc.
- Security class
- Common Stock
- Shares / value
- 4,554,873
- Estimated value
- Report date
- 15 Oct 2024
- Price
- Ownership
- Indirect
Erez Chimovits - Director at Upstream Bio, Inc.
Issuer-level insider activity
- Role
- Director
- Issuer ticker
- UPB on Nasdaq
- Entity type
- Individual
- Source filing history
- Open source filing history
Identity
Names, identifiers, and filing context for this profile.
1 identity field
Source evidence
Original filing metadata and source links for verification.
1 source field
No buys or sells have been reported by Erez Chimovits since 21 Sep 2025
Reported holdings for Erez Chimovits in Upstream Bio, Inc.
Form 4 holding
Director
Upstream Bio, Inc.
- Security class
- Stock Option (Right to Buy)
- Shares / value
- 17,096
- Estimated value
- Report date
- 09 Jun 2026
- Price
- Ownership
- Direct
- Underlying class
- Common Stock
- Underlying amount
Form 4 holding
Director
Upstream Bio, Inc.
- Security class
- Series A redeemable convertible preferred stock
- Shares / value
- 0
- Estimated value
- Report date
- 15 Oct 2024
- Price
- Ownership
- Indirect
- Underlying class
- Common Stock
- Underlying amount
Form 4 holding
Director
Upstream Bio, Inc.
- Security class
- Series B redeemable convertible preferred stock
- Shares / value
- 0
- Estimated value
- Report date
- 15 Oct 2024
- Price
- Ownership
- Indirect
- Underlying class
- Common Stock
- Underlying amount
Transaction history for Erez Chimovits in Upstream Bio, Inc.
| Sym | Class | Transaction | % | SEC-reported value | SEC-reported price | Shares | Shares after | Date | Ownership |
|---|
* marks a reported price that did not pass the local price check.