Form 4 holding
10%+ Owner
Mersana Therapeutics, Inc.
- Security class
- Common Stock
- Shares / value
- 11,328,000
- Estimated value
- $21,523,200
- Report date
- 19 Dec 2024
- Price
- $1.90
- Ownership
- Indirect
EcoR1 Capital, LLC - 10%+ Owner at Mersana Therapeutics, Inc.
Issuer-level insider activity
- Role
- 10%+ Owner
- Issuer ticker
- MRSN
- Entity type
- Company
- 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 EcoR1 Capital, LLC since 20 Aug 2025
Reported holdings for EcoR1 Capital, LLC in Mersana Therapeutics, Inc.
Form 4 holding
10%+ Owner
Mersana Therapeutics, Inc.
- Security class
- Pre-Funded Warrants
- Shares / value
- 8,036,688
- Estimated value
- Report date
- 19 Dec 2024
- Price
- Ownership
- Indirect
- Underlying class
- Common Stock
- Underlying amount
Transaction history for EcoR1 Capital, LLC in Mersana Therapeutics, 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.