Quick Takeaways
- Rock Springs Capital Management LP filed SCHEDULE 13G/A for Aclaris Therapeutics, Inc. Common Stock, $0.00001 par value (ACRS).
- Disclosed ownership: 4.7%.
- Date of event: 31 Mar 2025.
Rock Springs Capital Management LP - 31 Mar 2025 SCHEDULE 13G/A Report for Aclaris Therapeutics, Inc. Common Stock, $0.00001 par value (ACRS)
- Filing Manager
- Rock Springs Capital Management LP
- Reporting Manager
- Rock Springs Capital Management LP
- Symbol
- ACRS
- Shares outstanding
- 107,368,277 shares
- Disclosed Ownership
- 5,046,309 shares
- Ownership
- 4.7%
- Form type
- SCHEDULE 13G/A
- Filing time
- 15 May 2025, 10:45:24 UTC
- Date of event
- 31 Mar 2025
- SEC
- View on sec.gov
Quoteable Key Fact
"Rock Springs Capital Management LP disclosed 4.7% ownership in Aclaris Therapeutics, Inc. Common Stock, $0.00001 par value (ACRS) on 31 Mar 2025."
What Changed
- No earlier schedule filing is available for direct comparison.
- Current filing was accepted on 15 May 2025, 10:45.
Why This Matters
- This page explains what this Schedule 13D/13G filing tells you before manager-level rows.
- You can verify ownership claims directly against the original SEC filing.
Official SEC Source
Backed by Schedule 13D/13G
Beneficial ownership values are sourced from the original SEC Schedule 13D/13G filing.
See Original FilingReporting Managers (5)
| Name | Ownership | Shares Owned | sole voting power | shared voting power | Signature | Title | CIK |
|---|---|---|---|---|---|---|---|
| Rock Springs Capital Management LP | 4.7% | 5,046,309 | 0 | 5,046,309 | /s/ Mark Bussard | Mark Bussard - Member | |
| Rock Springs Capital LLC | 4.7% | 5,046,309 | 0 | 5,046,309 | /s/ Mark Bussard | Mark Bussard - Member | |
| Rock Springs Capital Master Fund LP | 0% | 0 | 0 | 0 | /s/ Mark Bussard | Mark Bussard - Member | |
| Mark Bussard | 4.7% | 5,046,309 | 0 | 5,046,309 | /s/ Mark Bussard | Mark Bussard | |
| Kris Jenner | 4.7% | 5,046,309 | 0 | 5,046,309 | /s/ Kris Jenner | Kris Jenner |