Magnera Corp has 17 Schedule 13D or 13G filings on record since 2025-07-17. 2 holders' latest filing reports 5% or more of common stock. Each figure below is the holder's own, as filed, with the filing linked.
Holders
| Holder | Percent | Shares | Latest | Event date |
|---|---|---|---|---|
| Newtyn Management, LLC | 7.7% | 2,760,000 | SCHEDULE 13G/A, 2026-05-15 | 2026-03-31 |
| BlackRock, Inc. | 7.1% | 2,519,401 | SCHEDULE 13G, 2025-07-17 | 2025-06-30 |
| Madison Avenue International LP | 4.4% | 1,590,616 | SCHEDULE 13G/A, 2026-05-15 | 2026-03-31 |
| Cetus Capital VI, L.P. | 4.36% | 1,561,199 | SCHEDULE 13G/A, 2026-08-05 | 2026-07-28 |
| Morgan Stanley | 3.9% | 1,391,243 | SCHEDULE 13G/A, 2026-08-12 | 2026-06-30 |
| Ancora Advisors LLC | 1.5% | 533,161 | SCHEDULE 13G, 2026-02-13 | 2025-12-31 |
| The Vanguard Group | 0% | 0 | SCHEDULE 13G/A, 2026-03-27 | 2026-03-13 |
Timeline
| Filed | Holder | Percent | Filing |
|---|---|---|---|
| 2025-07-17 | BlackRock, Inc. | 7.1% | SCHEDULE 13G |
| 2025-07-29 | The Vanguard Group | 6.65% | SCHEDULE 13G/A |
| 2025-08-06 | Morgan Stanley | 5.4% | SCHEDULE 13G |
| 2025-08-08 | Cetus Capital VI, L.P. | 7.88% | SCHEDULE 13G/A |
| 2025-08-14 | Newtyn Management, LLC | 6.4% | SCHEDULE 13G |
| 2025-11-07 | Morgan Stanley | 4.4% | SCHEDULE 13G/A |
| 2025-11-14 | Madison Avenue Partners, LP | 8% | SCHEDULE 13G/A |
| 2026-02-12 | Morgan Stanley | 6.5% | SCHEDULE 13G |
| 2026-02-13 | Ancora Advisors LLC | 1.5% | SCHEDULE 13G |
| 2026-02-17 | Madison Avenue International LP | 5% | SCHEDULE 13G/A |
| 2026-03-27 | The Vanguard Group | 0% | SCHEDULE 13G/A |
| 2026-05-12 | Morgan Stanley | 5.3% | SCHEDULE 13G/A |
| 2026-05-12 | Cetus Capital VI, L.P. | 6.26% | SCHEDULE 13G/A |
| 2026-05-15 | Madison Avenue International LP | 4.4% | SCHEDULE 13G/A |
| 2026-05-15 | Newtyn Management, LLC | 7.7% | SCHEDULE 13G/A |
| 2026-08-05 | Cetus Capital VI, L.P. | 4.36% | SCHEDULE 13G/A |
| 2026-08-12 | Morgan Stanley | 3.9% | SCHEDULE 13G/A |
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Where this comes from
Anyone who comes to own more than 5% of a class of a listed company's voting shares has to tell the SEC. A holder who may seek to change or influence the company files Schedule 13D, and has to say in Item 4, "Purpose of Transaction", what it intends to do. A holder with no such intent, such as many index and passive funds, may file the shorter Schedule 13G. Both are amended when the stake changes, including when it falls below 5%.
Every row here is one of those filings, linked to the filing itself. Percentages and share counts are exactly as the holder filed them, for the holder the filing names; an amendment showing a lower figure is shown as filed. Item 4 text is quoted word for word. Where a 13D's Item 4 contains a sentence stating a definite intent to influence the company, that sentence is marked and quoted; the page does not describe the holder or its motives beyond the words it filed. Nothing here is investment advice.