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Magnera Corp (MAGN) institutional ownership

Market cap$451M SectorConsumer Cyclical
Funds holding · Q1 2026
168
reported MAGN position changes
Top owners · Q1 2026
No disclosed owners are available.
Institutional activity · Q1 2026
Activity unavailable N/A
82 buyers · 86 sellers

Magnera Corp (MAGN) price and institutional activity

Dates

Q1 2026

$0 bought by 82 investors
Dg Capital Management, LLCJPMorgan Chase & Co +80 more
$0 sold by 86 investors
Jefferies Financial Group Inc.Nuveen, LLC +84 more
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Bought Sold Totals per quarter; hover a bar for the names.

Magnera Corp (MAGN) institutional activity · 168

Investor Type Est. change Change Δ Own Date
Dg Capital Management, LLC · Added
Change +1.2M Date Q1 2026
Dg Capital Management, LLC Added· Q1 2026 +1.2M Q1 2026
Jefferies Financial Group Inc. · Exited
Change −995K Δ Own −100.0% Date Q1 2026
Jefferies Financial Group Inc. Exited· Q1 2026 −995K −100.0% Q1 2026
Nuveen, LLC · Reduced
Change −732K Date Q1 2026
Nuveen, LLC Reduced· Q1 2026 −732K Q1 2026
JPMorgan Chase & Co · Added
Change +578K Date Q1 2026
JPMorgan Chase & Co Added· Q1 2026 +578K Q1 2026
Thompson Siegel & Walmsley LLC · New
Change +574K Date Q1 2026
Thompson Siegel & Walmsley LLC New· Q1 2026 +574K Q1 2026
SG Americas Securities, LLC · Exited
Change −558K Δ Own −100.0% Date Q1 2026
SG Americas Securities, LLC Exited· Q1 2026 −558K −100.0% Q1 2026
Morgan Stanley · Reduced
Change −455K Date Q1 2026
Morgan Stanley Reduced· Q1 2026 −455K Q1 2026
Goldman Sachs Group Inc · Reduced
Change −426K Date Q1 2026
Goldman Sachs Group Inc Reduced· Q1 2026 −426K Q1 2026
Newtyn Management, LLC · Added
Change +400K Date Q1 2026
Newtyn Management, LLC Added· Q1 2026 +400K Q1 2026
Millennium Management LLC · Reduced
Change −318K Date Q1 2026
Millennium Management LLC Reduced· Q1 2026 −318K Q1 2026
Ancora Advisors LLC · Added
Change +296K Date Q1 2026
Ancora Advisors LLC Added· Q1 2026 +296K Q1 2026
Jacobs Levy Equity Management, Inc · Reduced
Change −261K Date Q1 2026
Jacobs Levy Equity Management, Inc Reduced· Q1 2026 −261K Q1 2026
Citadel Advisors LLC Reduced· Q1 2026 −236K −42.8% Q1 2026
American Century Companies Inc · New
Change +221K Date Q1 2026
American Century Companies Inc New· Q1 2026 +221K Q1 2026
Jane Street Group, LLC · Exited
Change −216K Δ Own −100.0% Date Q1 2026
Jane Street Group, LLC Exited· Q1 2026 −216K −100.0% Q1 2026
Data through Q1 2026 · filed Jun 3, 2026
15 of 168

Famous investor activity in Magnera Corp (MAGN)

Magnera Corp (MAGN) insider trading

Company insiders, action and economics first; trade and filed dates last.
Dates
Insider Title Type Price Qty Value Owned ΔOwn Trade date Filed date
Rickertsen Carl J. · Director Grant (A) 13K
Owned 13K Trade date Mar 9, 2026 Filed date Mar 10, 2026
Rickertsen Carl J. Director Grant (A) 13K 13K Mar 9, 2026 Mar 10, 2026
Salmon Tom · Director Grant (A) 13K
Owned 13K Trade date Mar 9, 2026 Filed date Mar 10, 2026
Salmon Tom Director Grant (A) 13K 13K Mar 9, 2026 Mar 10, 2026
Marnick Samantha J. · Director Grant (A) 13K
Owned 13K Trade date Mar 9, 2026 Filed date Mar 10, 2026
Marnick Samantha J. Director Grant (A) 13K 13K Mar 9, 2026 Mar 10, 2026
Hall Mary Dean · Director Grant (A) 13K
Owned 13K Trade date Mar 9, 2026 Filed date Mar 10, 2026
Hall Mary Dean Director Grant (A) 13K 13K Mar 9, 2026 Mar 10, 2026
Curless Michael S. · Director Grant (A) 13K
Owned 13K Trade date Mar 9, 2026 Filed date Mar 10, 2026
Curless Michael S. Director Grant (A) 13K 13K Mar 9, 2026 Mar 10, 2026
Fogarty Kevin Michael · Director Grant (A) 13K
Owned 13K Trade date Mar 9, 2026 Filed date Mar 10, 2026
Fogarty Kevin Michael Director Grant (A) 13K 13K Mar 9, 2026 Mar 10, 2026
Fahnemann Thomas · Director Grant (A) 13K
Owned 13K Trade date Mar 9, 2026 Filed date Mar 10, 2026
Fahnemann Thomas Director Grant (A) 13K 13K Mar 9, 2026 Mar 10, 2026
Brown Bruce · Director Grant (A) 13K
Owned 13K Trade date Mar 9, 2026 Filed date Mar 10, 2026
Brown Bruce Director Grant (A) 13K 13K Mar 9, 2026 Mar 10, 2026
Urey Jill L. · Officer 2 operations 0
Price $12.95 Owned 2K Trade date Feb 28, 2026 Filed date Mar 3, 2026
Urey Jill L. Officer 2 operations $12.95 0 2K Feb 28, 2026 Mar 3, 2026
Urey Jill L. · Officer Tax withholding or exercise payment (F) -$7K
Price $12.95 Qty -521 Owned 5K Trade date Feb 28, 2026 Filed date Mar 3, 2026
Urey Jill L. Officer Tax withholding or exercise payment (F) $12.95 -521 -$7K 5K Feb 28, 2026 Mar 3, 2026
Urey Jill L. · Officer 2 operations 0
Price $13.03 Owned 0 Trade date Feb 24, 2026 Filed date Feb 26, 2026
Urey Jill L. Officer 2 operations $13.03 0 0 Feb 24, 2026 Feb 26, 2026
Urey Jill L. · Officer Tax withholding or exercise payment (F) -$886
Price $13.03 Qty -68 Owned 4K Trade date Feb 24, 2026 Filed date Feb 26, 2026
Urey Jill L. Officer Tax withholding or exercise payment (F) $13.03 -68 -$886 4K Feb 24, 2026 Feb 26, 2026
Brown Bruce · Director Grant (A) 6K
Owned 6K Trade date Nov 14, 2025 Filed date Nov 18, 2025
Brown Bruce Director Grant (A) 6K 6K Nov 14, 2025 Nov 18, 2025
Fogarty Kevin Michael · Director Grant (A) 6K
Owned 6K Trade date Nov 14, 2025 Filed date Nov 18, 2025
Fogarty Kevin Michael Director Grant (A) 6K 6K Nov 14, 2025 Nov 18, 2025
Curless Michael S. · Director Grant (A) 6K
Owned 6K Trade date Nov 14, 2025 Filed date Nov 18, 2025
Curless Michael S. Director Grant (A) 6K 6K Nov 14, 2025 Nov 18, 2025
15 of 39
15 of 39 Sign in to continue to older insider transactions.

Magnera Corp (MAGN) activist and large shareholders

What are Schedules 13D and 13G?

Dates
Owner/Filer identity Shares reported % of shares outstanding Filing date
Vanguard Group Inc 3.5M
% of shares outstanding 10.0% Filing date Dec 6, 2024
Vanguard Group Inc 3.5M 10.0% Dec 6, 2024
Newtyn Management, LLC 2.8M
% of shares outstanding 7.7% Filing date May 15, 2026
Newtyn Management, LLC 2.8M 7.7% May 15, 2026
Cetus Capital Vi, L.P. 2.2M
% of shares outstanding 6.3% Filing date May 12, 2026
Cetus Capital Vi, L.P. 2.2M 6.3% May 12, 2026
Engine Capital, L.P. 2.0M
% of shares outstanding 5.5% Filing date Nov 21, 2024
Engine Capital, L.P. 2.0M 5.5% Nov 21, 2024
Morgan Stanley 1.9M
% of shares outstanding 5.3% Filing date May 12, 2026
Morgan Stanley 1.9M 5.3% May 12, 2026
Madison Avenue International LP 1.6M
% of shares outstanding 4.4% Filing date May 15, 2026
Madison Avenue International LP 1.6M 4.4% May 15, 2026
Dimensional Fund Advisors LP 1.8M
% of shares outstanding 4.1% Filing date Feb 10, 2023
Dimensional Fund Advisors LP 1.8M 4.1% Feb 10, 2023
Segall Bryant & Hamill, LLC 1.7M
% of shares outstanding 3.7% Filing date Feb 13, 2023
Segall Bryant & Hamill, LLC 1.7M 3.7% Feb 13, 2023
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Magnera Corp (MAGN) ownership FAQ

Who owns MAGN?

168 reporting institutions disclosed MAGN position changes in the Q1 2026 snapshot.

How is institutional activity calculated?

For each manager, WhoBought compares accepted consecutive 13F share counts. Share change is current shares minus prior shares. Estimated dollar change is that signed share change multiplied by the split-adjusted quarter-mean close. The activity table on this page uses Q1 2026.

What are activist and large shareholder filings?

An investor crossing 5% of a share class generally files Schedule 13D for activist intent or Schedule 13G for a passive position. The technical form names appear here rather than in the activity rows.

Where does this data come from?

Ownership and institutional activity come from SEC Form 13F filings. Insider activity comes from SEC Form 4, and large-shareholder activity from SEC Schedules 13D and 13G. FMP supplies price data only. Company logos use the local verified Parqet cache with one shared fallback.

Why are ownership reports delayed?

Form 13F is a quarterly disclosure and is normally filed after the quarter ends. Every ownership and activity value therefore names its represented period; it is not presented as a live position.

How are missing table values shown?

A muted dash marks a missing table value. It means the filing omitted the value, comparable data is unavailable, or no prior position exists for comparison.