Cetus Capital VI reports 4.36% Magnera Corp (MAGN) stake in amended 13G

Rhea-AI Filing Summary

Cetus Capital VI, L.P., a Delaware limited partnership, reports its beneficial ownership of common stock of Magnera Corp. Cetus holds 1,561,199 shares of Magnera common stock, representing 4.36% of the class, based on 35.8 million shares outstanding as of May 7, 2026.

Cetus has sole voting and dispositive power over all 1,561,199 shares and no shared voting or dispositive power. The filing notes that the position represents ownership of 5 percent or less of the class, and identifies Littlejohn Associates VI, L.P. as Cetus’s general partner.

Key Figures

Shares beneficially owned: 1,561,199 shares Percent of class: 4.36% Shares outstanding reference: 35.8 million shares +2 more

5 metrics

Shares beneficially owned 1,561,199 shares Common stock of Magnera Corp beneficially owned by Cetus Capital VI, L.P.

Percent of class 4.36% Percentage of Magnera Corp common stock held by Cetus Capital VI, L.P.

Shares outstanding reference 35.8 million shares Magnera common shares outstanding as of May 7, 2026, from Form 10-Q

Sole voting power 1,561,199 shares Shares over which Cetus Capital VI, L.P. has sole voting power

Sole dispositive power 1,561,199 shares Shares over which Cetus Capital VI, L.P. has sole dispositive power

Key Terms

beneficially owned, Sole Voting Power, Sole Dispositive Power, Ownership of 5 percent or less of a class

4 terms

beneficially owned financial

"Amount beneficially owned: See Item 9 of each cover page."

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.

Sole Voting Power financial

"5 | Sole Voting Power 1,561,199.00 6 | Shared Voting Power 0.00"

Sole voting power is the exclusive right to cast votes attached to a shareholder’s stock without needing approval from anyone else. Like holding the only remote control for a TV, it lets that holder decide corporate matters such as board members, mergers, and policy changes, making it important to investors because it concentrates control and can strongly influence a company’s strategy and the value of its shares.

Sole Dispositive Power financial

"7 | Sole Dispositive Power 1,561,199.00 8 | Shared Dispositive Power 0.00"

Sole dispositive power is the exclusive legal authority to decide what happens to a security — for example, whether to sell, transfer, or retain shares — without needing anyone else’s permission. Investors care because it signals who truly controls the economic outcome of an investment: like holding the only key to a safe, the holder can realize gains or losses and may trigger regulatory reporting, insider rules, or influence over corporate ownership.

Ownership of 5 percent or less of a class regulatory

"Item 5. | Ownership of 5 Percent or Less of a Class."

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Available on EDGAR 08/05/2026 - 04:26 PM Accepted by SEC EDGAR 08/05/2026 - 04:25 PM Learn about SEC filing dates

FAQ

What percentage of Magnera Corp (MAGN) does Cetus Capital VI, L.P. report owning?

Cetus Capital VI, L.P. reports beneficial ownership of 4.36% of Magnera Corp’s common stock. This percentage is based on 35.8 million shares outstanding as of May 7, 2026, as disclosed in Magnera’s Form 10-Q.

How many Magnera Corp (MAGN) shares does Cetus Capital VI, L.P. beneficially own?

Cetus Capital VI, L.P. beneficially owns 1,561,199 shares of Magnera Corp common stock. The filing states Cetus has sole voting and sole dispositive power over all of these shares, with no shared voting or dispositive authority.

Is Cetus Capital VI, L.P.’s stake in Magnera Corp (MAGN) above or below 5%?

Cetus Capital VI, L.P.’s stake is below 5% of Magnera Corp’s common stock. The Schedule 13G/A explicitly marks the position as “Ownership of 5 percent or less of a class”, reflecting its 4.36% holding.

What reference share count did Cetus use for its Magnera Corp (MAGN) ownership calculation?

The 4.36% ownership is calculated using 35.8 million Magnera common shares outstanding. That outstanding share figure is taken from Magnera’s Form 10-Q filed May 7, 2026, and is cited in a footnote to the ownership table.

Who is the general partner of Cetus Capital VI, L.P. in relation to Magnera Corp (MAGN)?

The general partner of Cetus Capital VI, L.P. is Littlejohn Associates VI, L.P., a Delaware limited partnership. The signature block shows Littlejohn Associates VI, L.P. signing on behalf of Cetus, with Robert E. Davis listed as Manager.

Does Cetus Capital VI, L.P. share voting or dispositive power over Magnera Corp (MAGN) shares?

No. The filing reports sole voting power over 1,561,199 shares and sole dispositive power over 1,561,199 shares. It shows 0 for both shared voting power and shared dispositive power regarding Magnera Corp common stock.

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

(Amendment No. 3)

Magnera Corp

(Name of Issuer)

Common Stock

(Title of Class of Securities)

55939A107

(CUSIP Number)

07/28/2026

(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

Cetus Capital VI, L.P.

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 1,561,199.00
6	Shared Voting Power 0.00
7	Sole Dispositive Power 1,561,199.00
8	Shared Dispositive Power 0.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

1,561,199.00

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)

4.36 %

12

Type of Reporting Person (See Instructions)

OO

Comment for Type of Reporting Person: (1) Based on 35.8 million shares of the Issuer's common stock outstanding as of May 7, 2026, as reported in the Issuer's Quarterly Report on Form 10-Q filed by the Issuer on May 7, 2026.

SCHEDULE 13G

Item 1.
(a)	Name of issuer: Magnera Corp
(b)	Address of issuer's principal executive offices: 9335 Harris Corners Pkwy, Ste 300, Charlotte, NC, 28269
Item 2.
(a)	Name of person filing: This statement is filed by the entity listed below, which is referred to herein as the "Reporting Person". Cetus Capital VI, L.P., a Delaware limited partnership, whose general partner is Littlejohn Associates VI, L.P., a Delaware limited partnership.
(b)	Address or principal business office or, if none, residence: The address of the principal business office of the Reporting Person is 8 Sound Shore Drive, Suite 303, Greenwich, CT 06830.
(c)	Citizenship: See Item 4 of each cover page.
(d)	Title of class of securities: 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: See Item 9 of each cover page.
(b)	Percent of class: See Item 11 of each cover page.
(c)	Number of shares as to which the person has:
	(i) Sole power to vote or to direct the vote: See Item 5 of each cover page.
	(ii) Shared power to vote or to direct the vote: See Item 6 of each cover page.
	(iii) Sole power to dispose or to direct the disposition of: See Item 7 of each cover page.
	(iv) Shared power to dispose or to direct the disposition of: See Item 8 of each cover page.
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.
	Not Applicable
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.

Cetus Capital VI, L.P.

Signature:	By: Littlejohn Associates VI, L.P., its general partner
Name/Title:	Robert E. Davis, Manager
Date:	08/05/2026