Magnera Corp.
Magnera Corp. (MAGN) Stock Ownership
Institutional vs insider vs public ownership from 13F and float data — top holders, activity, and insider trades below.
SEC 13F · FMP · MAGN · as of Sep 30, 2025
Ownership Breakdown
185
Institutional Holders
▼ 8 vs Q2
$431.35M
Total Inst. Value
▼ $48.36M vs Q2
35.60M
Shares Outstanding
freeFloat 99.43%
37.03M
13F Shares Held
▼ 2.91M vs Q2
Institutional ownership = 13F shares ÷ total outstanding. Insider % = 100 − free float. Public % = free float − institution %. Data: FMP /symbol-positions-summary + /shares-float + SEC EDGAR.
Top Institutional Holders
MAGN largest shareholders · institutional ownership
Q3 2025 · SEC 13F
Showing top 10 holders
| Holder | Shares | % Owned | Weight | Value | Reported | Change |
|---|---|---|---|---|---|---|
LITTLEJOHN & CO LLC paper mills | 3.20M | 9.00% | 9.00% | $37.56B | Nov 12, 2025 | ▲ 400.7K |
MADISON AVENUE PARTNERS, LP paper mills | 2.83M | 7.96% | 7.96% | $33.19B | Nov 14, 2025 | ▼ 511.7K |
ENGINE CAPITAL MANAGEMENT, LP paper mills | 2.70M | 7.59% | 7.59% | $31.67B | Nov 14, 2025 | ▲ 220.7K |
BLACKROCK, INC. paper mills | 2.50M | 7.02% | 7.02% | $29.28B | Nov 12, 2025 | ▼ 45.5K |
NEWTYN MANAGEMENT, LLC paper mills | 2.26M | 6.35% | 6.35% | $26.49B | Nov 14, 2025 | ▼ 11.5K |
VANGUARD GROUP INC paper mills | 2.14M | 6.02% | 6.02% | $25.13B | Nov 7, 2025 | ▼ 226.6K |
ANCORA ADVISORS, LLC paper mills | 1.74M | 4.88% | 4.88% | $20.37B | Nov 14, 2025 | ▼ 189.6K |
MORGAN STANLEY paper mills | 1.57M | 4.41% | 4.41% | $18.38B | May 27, 2026 | ▼ 386.5K |
DG CAPITAL MANAGEMENT, LLC paper mills | 1.16M | 3.27% | 3.27% | $13.65B | Nov 14, 2025 | ▲ 285.9K |
GOLDMAN SACHS GROUP INC paper mills | 840.5K | 2.36% | 2.36% | $9.85B | Nov 14, 2025 | ▲ 24.0K |
Data from SEC Form 13F filings. Ownership bar normalised to largest holder. Change flags: isNew / isSoldOut / changeInSharesNumber (FMP extract-analytics/holder).
Institutional Activity
Q3 2025 vs prior quarter
Q3 2025
19
Increased
+2.75M shares5
New Positions
first time holders20
Decreased
−3.22M shares0
Sold Out
fully exitedNet shares change (top 50)
468.2K
+2.75M / −3.22M
Net new holders
+4
5 new / 0 exited
Based on top 50 institutional holders by position size. Fields: isNew, isSoldOut, changeInSharesNumber (FMP extract-analytics/holder, limit=50).
Insider Buying vs Selling
MAGN insider trading · insider activity
Source: SEC Form 4
10
Buy transactions
4
Sell transactions
2.50
Buy/Sell ratio
$0M
Total disposed
Recent Insider Transactions
Showing 10 most recent · Common Stock only
| Name · Role | Date | Type | Shares | Price | Value | After Trans. | Filing |
|---|---|---|---|---|---|---|---|
RICKERTSEN CARL J director | Mar 9, 2026 | Award | 12,998 | — | — | 13.0K | Form 4 ↗ |
Salmon Tom director | Mar 9, 2026 | Award | 12,998 | — | — | 13.0K | Form 4 ↗ |
Marnick Samantha J. director | Mar 9, 2026 | Award | 12,998 | — | — | 13.0K | Form 4 ↗ |
Hall Mary Dean director | Mar 9, 2026 | Award | 12,998 | — | — | 13.0K | Form 4 ↗ |
Curless Michael S director | Mar 9, 2026 | Award | 12,998 | — | — | 13.0K | Form 4 ↗ |
Fogarty Kevin Michael director | Mar 9, 2026 | Award | 12,998 | — | — | 13.0K | Form 4 ↗ |
Fahnemann Thomas director | Mar 9, 2026 | Award | 12,998 | — | — | 13.0K | Form 4 ↗ |
Brown Bruce director | Mar 9, 2026 | Award | 12,998 | — | — | 13.0K | Form 4 ↗ |
Urey Jill L. EVP, GC & Corp Sec | Feb 28, 2026 | Tax Withhold | 521 | $12.95 | $6.7K | 5.1K | Form 4 ↗ |
Urey Jill L. EVP, GC & Corp Sec | Feb 24, 2026 | Tax Withhold | 68 | $13.03 | $886.04 | 4.1K | Form 4 ↗ |
Source: /insider-trading/search (FMP stable). Buy/Sell direction: acquisitionOrDisposition A=Buy, D=Sell. RSU vesting (M-Exempt) excluded from sentiment bar. All data from SEC EDGAR public filings.
About institutional & insider ownership
Magnera Corp. (MAGN) is primarily owned by institutional investors, who hold approximately 100.0% of total shares outstanding. Company insiders own approximately 0.57%, while retail and public investors account for the remaining 0.00%.
The largest institutional shareholder of Magnera Corp. is LITTLEJOHN & CO LLC, holding approximately 3.20 million shares — equal to 9.00% of outstanding shares — as of September 30, 2025.
A total of 185 institutional investors currently hold MAGN stock, with a combined institutional value of approximately $431,350,380 as of the most recent 13F filing period.
Frequently asked questions
MAGN ownershipMagnera Corp. (MAGN) is primarily owned by institutional investors, who hold approximately 100.0% of shares. The largest shareholder is LITTLEJOHN & CO LLC with a 9.00% stake. Company insiders hold 0.57%. Data sourced from SEC Form 13F as of September 30, 2025.