Key facts
- STATE STREET CORP filed SCHEDULE 13G for ALTIMMUNE INC COMMON STOCK (ALT).
- Disclosed ownership: 5.5%.
- Date of event: 31 Mar 2026.
STATE STREET CORP - 31 Mar 2026 SCHEDULE 13G Report for ALTIMMUNE INC COMMON STOCK (ALT)
- Filing Manager
- STATE STREET CORP
- Reporting Manager
- STATE STREET CORPORATION
- Security
- ALTIMMUNE INC COMMON STOCK
- Symbol
- ALT
- Shares outstanding
- 129,919,091 shares
- Disclosed Ownership
- 7,145,550 shares
- Ownership
- 5.5%
- Form type
- SCHEDULE 13G
- Filing time
- 12 May 2026, 09:46:28 UTC
- Date of event
- 31 Mar 2026
- SEC
- View on sec.gov
Key filing fact
STATE STREET CORP disclosed 5.5% ownership in ALTIMMUNE INC COMMON STOCK (ALT) on 31 Mar 2026.
Change
- No earlier schedule filing is available for direct comparison.
- Current filing was accepted on 12 May 2026, 09:46.
Research use
- 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.
Evidence
Backed by Schedule 13D/13G
See Original Filing
Beneficial ownership values are sourced from the original SEC Schedule 13D/13G filing.
Reporting persons
Reporting managers (1)
Names, ownership, voting power, signatures, titles, and CIKs as disclosed in this Schedule 13D/G filing.
| Name | Ownership | Shares Owned | sole voting power | shared voting power | Signature | Title | CIK |
|---|---|---|---|---|---|---|---|
| STATE STREET CORPORATION | 5.5% | 7,145,550 | 0 | 7,012,433 | ELIZABETH SCHAEFER | SENIOR VICE PRESIDENT, CHIEF ACCOUNTING OFFICER |
CIK / CUSIP context first