Quick Takeaways
- JANA Partners Management, LP filed SCHEDULE 13D/A for MERCURY SYSTEMS INC Common Stock, par value $0.01 per share (MRCY).
- Disclosed ownership: 8.3%.
- Date of event: 06 Nov 2025.
JANA Partners Management, LP - 06 Nov 2025 SCHEDULE 13D/A Report for MERCURY SYSTEMS INC Common Stock, par value $0.01 per share (MRCY)
- Filing Manager
- JANA Partners Management, LP
- Reporting Manager
- JANA Partners Management, LP
- Symbol
- MRCY
- Shares outstanding
- 59,839,458 shares
- Disclosed Ownership
- 4,966,675 shares
- Ownership
- 8.3%
- Form type
- SCHEDULE 13D/A
- Filing time
- 10 Nov 2025, 18:30:23 UTC
- Date of event
- 06 Nov 2025
- Previous filing
- 15 Aug 2025
- Next filing
- 04 Mar 2026
- SEC
- View on sec.gov
Quoteable Key Fact
"JANA Partners Management, LP disclosed 8.3% ownership in MERCURY SYSTEMS INC Common Stock, par value $0.01 per share (MRCY) on 06 Nov 2025."
What Changed
- Previous schedule filing date: 15 Aug 2025.
- Current filing was accepted on 10 Nov 2025, 18:30.
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.
Source Evidence
Backed by Schedule 13D/13G
See Original Filing
Beneficial ownership values are sourced from the original SEC Schedule 13D/13G filing.
Reporting Managers (1)
| Name | Ownership | Shares Owned | sole voting power | shared voting power | Signature | Title | CIK |
|---|---|---|---|---|---|---|---|
| JANA Partners Management, LP | 8.3% | 4,966,675 | 4,966,675 | 0 | /s/ Jennifer Fanjiang | Jennifer Fanjiang, Partner, Chief Legal Officer and Chief Compliance Officer | 0001998597 |