Magnera Corp. (MAGN) ownership: Top institutional holder: VANGUARD GROUP INC ($33.07M). Insider activity: Net Seller (2 buys, 12 sells). 1 recent congressional STOCK Act disclosures. SEC EDGAR first-party data.
| Holder | Shares | Market Value | Reported |
|---|---|---|---|
| VANGUARD GROUP INC | 2184219.00 | $33.07M | 2025-12-31 |
| Newtyn Management, LLC | 2760000.00 | $26.25M | 2026-03-31 |
| LITTLEJOHN & CO LLC | 2425818.00 | $23.07M | 2026-03-31 |
| BlackRock, Inc. | 2390007.00 | $22.73M | 2026-03-31 |
| Engine Capital Management, LP | 2243827.00 | $21.34M | 2026-03-31 |
| MORGAN STANLEY | 1967831.00 | $18.71M | 2026-03-31 |
| Madison Avenue Partners, LP | 1590616.00 | $15.13M | 2026-03-31 |
| Jefferies Financial Group Inc. | 994619.00 | $15.06M | 2025-12-31 |
| Insider | Transaction | Value | Date |
|---|---|---|---|
| Sell | null | 2026-03-09 | |
| Sell | null | 2026-03-09 | |
| Sell | null | 2026-03-09 | |
| Sell | null | 2026-03-09 | |
| Sell | null | 2026-03-09 | |
| Sell | null | 2026-03-09 | |
| Sell | null | 2026-03-09 | |
| Sell | null | 2026-03-09 |
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Institutional data from SEC Form 13F. Insider data from SEC Form 4. Congressional data from STOCK Act disclosures. Not personalized investment advice.