Magnera Corporation common stock ownership update: a group led by Madison Avenue International LP reports beneficial ownership of 1,590,616 shares as of March 31, 2026. The filing states this represents approximately 4.4% of the company based on 35,900,000 shares outstanding as of February 5, 2026. The statement identifies related entities and individuals (Madison Avenue Partners, EMAI Management, Madison Avenue GP, Caraway Jackson Investments LLC, and Eli Samaha) that may be deemed beneficial owners through managerial or ownership relationships.
Positive
None.
Negative
None.
Insights
Disclosure of a 4.4% beneficial stake held through affiliated entities.
Schedule 13G/A lists that Madison Avenue International LP beneficially owns 1,590,616 shares as of March 31, 2026. The filing clarifies attribution across related entities and a named individual, reflecting typical group reporting where voting and dispositive powers are shared.
Filings of this type are routine ownership disclosures; subsequent filings would update percentages if holdings or the issuer's outstanding share count change.
Clarifies voting and dispositive power are held as shared interests by related entities.
The cover data show shared voting power and shared dispositive power of 1,590,616 shares across the Reporting Persons. The statement ties beneficial ownership to managerial and ownership relationships rather than direct sole control.
Investors should expect future amendments if holdings or the reported outstanding share base change; the filing cites the issuer's February 5, 2026 10-Q for the outstanding share count.
Key Figures
Reported beneficial ownership:1,590,616 sharesShares outstanding used for percent:35,900,000 sharesPercent of class:4.4%+1 more
4 metrics
Reported beneficial ownership1,590,616 sharesBeneficially owned as of March 31, 2026
Shares outstanding used for percent35,900,000 sharesOutstanding as of February 5, 2026 (issuer 10-Q)
Percent of class4.4%Calculated based on 35,900,000 shares outstanding
CUSIP55939A107Magnera Corporation Common Stock identifier
"Madison Avenue International LP beneficially owned 1,590,616 shares"
Beneficially owned describes securities or assets where a person has the economic rights and control—such as the right to receive dividends and to direct voting—even if legal title is held in another name. Think of it like having the keys and using a car that’s registered to someone else: you get the benefits and make decisions. Investors care because beneficial ownership reveals who truly controls value and voting power, affecting corporate decisions and takeover dynamics.
shared dispositive powerregulatory
"Shared Dispositive Power 1,590,616.00"
Schedule 13G/Aregulatory
"The names of the persons filing this statement"
A Schedule 13G/A is an amended public filing with the U.S. securities regulator that updates a previous Schedule 13G, disclosing when an individual or group holds a substantial (typically over 5%) stake in a company and is claiming a passive, non‑controlling intent. Investors monitor these updates because rising or falling holdings can signal changing confidence, potential future moves, or shifts in voting power — like watching a public ledger where large shareholders quietly adjust their positions.
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
SCHEDULE 13G
UNDER THE SECURITIES EXCHANGE ACT OF 1934
(Amendment No. 3)
Magnera Corporation
(Name of Issuer)
Common Stock, $0.01 par value per share (the "Common Stock")
(Title of Class of Securities)
55939A107
(CUSIP Number)
03/31/2026
(Date of Event Which Requires Filing of this Statement)
Check the appropriate box to designate the rule pursuant to which this Schedule is filed:
Rule 13d-1(b)
Rule 13d-1(c)
Rule 13d-1(d)
schemaVersion:
SCHEDULE 13G
CUSIP Number(s):
55939A107
1
Names of Reporting Persons
Madison Avenue International LP
2
Check the appropriate box if a member of a Group (see instructions)
(a)
(b)
3
Sec Use Only
4
Citizenship or Place of Organization
CAYMAN ISLANDS
Number of Shares Beneficially Owned by Each Reporting Person With:
5
Sole Voting Power
0.00
6
Shared Voting Power
1,590,616.00
7
Sole Dispositive Power
0.00
8
Shared Dispositive Power
1,590,616.00
9
Aggregate Amount Beneficially Owned by Each Reporting Person
1,590,616.00
10
Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)
11
Percent of class represented by amount in row (9)
4.4 %
12
Type of Reporting Person (See Instructions)
PN
SCHEDULE 13G
CUSIP Number(s):
55939A107
1
Names of Reporting Persons
Madison Avenue Partners, LP
2
Check the appropriate box if a member of a Group (see instructions)
(a)
(b)
3
Sec Use Only
4
Citizenship or Place of Organization
DELAWARE
Number of Shares Beneficially Owned by Each Reporting Person With:
5
Sole Voting Power
0.00
6
Shared Voting Power
1,590,616.00
7
Sole Dispositive Power
0.00
8
Shared Dispositive Power
1,590,616.00
9
Aggregate Amount Beneficially Owned by Each Reporting Person
1,590,616.00
10
Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)
11
Percent of class represented by amount in row (9)
4.4 %
12
Type of Reporting Person (See Instructions)
PN
SCHEDULE 13G
CUSIP Number(s):
55939A107
1
Names of Reporting Persons
EMAI Management, LLC
2
Check the appropriate box if a member of a Group (see instructions)
(a)
(b)
3
Sec Use Only
4
Citizenship or Place of Organization
DELAWARE
Number of Shares Beneficially Owned by Each Reporting Person With:
5
Sole Voting Power
0.00
6
Shared Voting Power
1,590,616.00
7
Sole Dispositive Power
0.00
8
Shared Dispositive Power
1,590,616.00
9
Aggregate Amount Beneficially Owned by Each Reporting Person
1,590,616.00
10
Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)
11
Percent of class represented by amount in row (9)
4.4 %
12
Type of Reporting Person (See Instructions)
OO
SCHEDULE 13G
CUSIP Number(s):
55939A107
1
Names of Reporting Persons
Madison Avenue GP, LLC
2
Check the appropriate box if a member of a Group (see instructions)
(a)
(b)
3
Sec Use Only
4
Citizenship or Place of Organization
DELAWARE
Number of Shares Beneficially Owned by Each Reporting Person With:
5
Sole Voting Power
0.00
6
Shared Voting Power
1,590,616.00
7
Sole Dispositive Power
0.00
8
Shared Dispositive Power
1,590,616.00
9
Aggregate Amount Beneficially Owned by Each Reporting Person
1,590,616.00
10
Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)
11
Percent of class represented by amount in row (9)
4.4 %
12
Type of Reporting Person (See Instructions)
OO
SCHEDULE 13G
CUSIP Number(s):
55939A107
1
Names of Reporting Persons
Caraway Jackson Investments LLC
2
Check the appropriate box if a member of a Group (see instructions)
(a)
(b)
3
Sec Use Only
4
Citizenship or Place of Organization
DELAWARE
Number of Shares Beneficially Owned by Each Reporting Person With:
5
Sole Voting Power
0.00
6
Shared Voting Power
1,590,616.00
7
Sole Dispositive Power
0.00
8
Shared Dispositive Power
1,590,616.00
9
Aggregate Amount Beneficially Owned by Each Reporting Person
1,590,616.00
10
Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)
11
Percent of class represented by amount in row (9)
4.4 %
12
Type of Reporting Person (See Instructions)
OO
SCHEDULE 13G
CUSIP Number(s):
55939A107
1
Names of Reporting Persons
Eli Samaha
2
Check the appropriate box if a member of a Group (see instructions)
(a)
(b)
3
Sec Use Only
4
Citizenship or Place of Organization
UNITED STATES
Number of Shares Beneficially Owned by Each Reporting Person With:
5
Sole Voting Power
0.00
6
Shared Voting Power
1,590,616.00
7
Sole Dispositive Power
0.00
8
Shared Dispositive Power
1,590,616.00
9
Aggregate Amount Beneficially Owned by Each Reporting Person
1,590,616.00
10
Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)
11
Percent of class represented by amount in row (9)
4.4 %
12
Type of Reporting Person (See Instructions)
IN
SCHEDULE 13G
Item 1.
(a)
Name of issuer:
Magnera Corporation
(b)
Address of issuer's principal executive offices:
9335 Harris Corners Pkwy, Suite 300, Charlotte, NC 28269
Item 2.
(a)
Name of person filing:
The names of the persons filing this statement on Schedule 13G (collectively, the "Reporting Persons") are:
* Madison Avenue International LP,
* Madison Avenue Partners, LP,
* EMAI Management, LLC,
* Madison Avenue GP, LLC,
* Caraway Jackson Investments LLC, and
* Eli Samaha.
(b)
Address or principal business office or, if none, residence:
The principal business address for each of the Reporting Persons is 150 East 58th St, 14th Fl, New York, NY 10155.
(c)
Citizenship:
Madison Avenue International LP is a Cayman Islands exempted limited partnership. Madison Avenue Partners, LP is a Delaware limited partnership. Each of EMAI Management, LLC, Madison Avenue GP, LLC and Caraway Jackson Investments LLC is a Delaware limited liability company. Mr. Samaha is a citizen of the United States of America.
(d)
Title of class of securities:
Common Stock, $0.01 par value per share (the "Common Stock")
(e)
CUSIP No.:
55939A107
Item 3.
If this statement is filed pursuant to §§ 240.13d-1(b) or 240.13d-2(b) or (c), check whether the person filing is a:
(a)
Broker or dealer registered under section 15 of the Act (15 U.S.C. 78o);
(b)
Bank as defined in section 3(a)(6) of the Act (15 U.S.C. 78c);
(c)
Insurance company as defined in section 3(a)(19) of the Act (15 U.S.C. 78c);
(d)
Investment company registered under section 8 of the Investment Company Act of 1940 (15 U.S.C. 80a-8);
(e)
An investment adviser in accordance with § 240.13d-1(b)(1)(ii)(E);
(f)
An employee benefit plan or endowment fund in accordance with § 240.13d-1(b)(1)(ii)(F);
(g)
A parent holding company or control person in accordance with § 240.13d-1(b)(1)(ii)(G);
(h)
A savings associations as defined in Section 3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813);
(i)
A church plan that is excluded from the definition of an investment company under section 3(c)(14) of the Investment Company Act of 1940 (15 U.S.C. 80a-3);
(j)
A non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J). If filing as a non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J),
please specify the type of institution:
(k)
Group, in accordance with Rule 240.13d-1(b)(1)(ii)(K).
Item 4.
Ownership
(a)
Amount beneficially owned:
As of March 31, 2026, Madison Avenue International LP beneficially owned 1,590,616 shares of Common Stock.
Madison Avenue Partners, LP and Madison Avenue GP, LLC, as the investment manager and general partner of Madison Avenue International LP, respectively, may be deemed to be the beneficial owner of the shares of Common Stock owned directly by Madison Avenue International LP.
EMAI Management, LLC, as the general partner of Madison Avenue Partners, LP, may be deemed to be the beneficial owner of the shares of Common Stock owned directly by Madison Avenue International LP.
Caraway Jackson Investments LLC, as the owner of Madison Avenue GP, LLC, may be deemed to be the beneficial owner of the shares of Common Stock owned directly by Madison Avenue International LP.
Mr. Samaha, as the non-member manager of Madison Avenue GP, LLC, the managing member of EMAI Management, LLC, and the majority owner of Caraway Jackson Investments LLC, may be deemed to be the beneficial owner of the shares of Common Stock owned by Madison Avenue International LP.
(b)
Percent of class:
The following percentage is based on 35,900,000 shares of Common Stock outstanding as of February 5, 2026, as disclosed in the Issuer's Quarterly Report on Form 10-Q, filed with the Securities and Exchange Commission on February 5, 2026.
As of March 31, 2026, the Reporting Persons may be deemed to have beneficially owned approximately 4.4% of the outstanding shares of Common Stock.
(c)
Number of shares as to which the person has:
(i) Sole power to vote or to direct the vote:
See Cover Pages Items 5-9.
(ii) Shared power to vote or to direct the vote:
See Cover Pages Items 5-9.
(iii) Sole power to dispose or to direct the disposition of:
See Cover Pages Items 5-9.
(iv) Shared power to dispose or to direct the disposition of:
See Cover Pages Items 5-9.
Item 5.
Ownership of 5 Percent or Less of a Class.
Ownership of 5 percent or less of a class
Item 6.
Ownership of more than 5 Percent on Behalf of Another Person.
Not Applicable
Item 7.
Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on by the Parent Holding Company or Control Person.
Not Applicable
Item 8.
Identification and Classification of Members of the Group.
If a group has filed this schedule pursuant to §240.13d-1(b)(1)(ii)(J), so indicate under Item 3(j) and attach an exhibit stating the identity and Item 3 classification of each member of the group. If a group has filed this schedule pursuant to §240.13d-1(c) or §240.13d-1(d), attach an exhibit stating the identity of each member of the group.
See Exhibit A of the Schedule 13G filed by the reporting persons with the Securities and Exchange Commission on November 14, 2024.
Item 9.
Notice of Dissolution of Group.
Not Applicable
Item 10.
Certifications:
By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect, other than activities solely in connection with a nomination under ?? 240.14a-11.
SIGNATURE
After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.
Madison Avenue International LP
Signature:
/s/ Eli Samaha
Name/Title:
Eli Samaha, as Manager of Madison Avenue GP, LLC, the General Partner of Madison Avenue International LP
Date:
05/15/2026
Madison Avenue Partners, LP
Signature:
/s/ Eli Samaha
Name/Title:
Eli Samaha, as Managing Member of EMAI Management, LLC, the General Partner of Madison Avenue Partners, LP
What stake does Madison Avenue International LP report in MAGN?
Madison Avenue International LP reports beneficial ownership of 1,590,616 shares as of March 31, 2026. The filing shows this position held through affiliated entities and managerial relationships rather than as multiple unrelated holders.
What percentage of MAGN does the reported position represent?
The filing states the reported holdings equal approximately 4.4% of common stock. This percentage is calculated using 35,900,000 shares outstanding as of February 5, 2026, per the issuer's 10-Q.
Who are the other Reporting Persons listed with Madison Avenue International LP?
The filing names Madison Avenue Partners, EMAI Management, Madison Avenue GP, Caraway Jackson Investments LLC, and Eli Samaha as Reporting Persons, each identified by role, citizenship, or ownership ties to the primary holder.
Does the filing indicate sole voting or dispositive control over the shares?
No sole control is shown. The cover entries list 0 sole voting power and 1,590,616 shared voting and dispositive power, indicating the interests are reported as shared among the named entities.
What is the reporting date for the ownership figures in this amendment?
The ownership amounts are reported as of March 31, 2026. Signature dates for the amendment appear on May 15, 2026, when authorized representatives signed the filing.
