Investor Kevin Donahue discloses 10.7% Mainz Biomed (MYNZ) stake

Rhea-AI Filing Summary

Mainz Biomed N.V. shareholder Kevin Donahue has filed an amended Schedule 13G reporting beneficial ownership of the company’s common stock. He reports holding 685,000 shares of Mainz Biomed common stock, representing 10.7% of the class, with the event triggering the filing dated 10/17/2025. Donahue has sole voting and sole dispositive power over all 685,000 shares, and no shared voting or shared dispositive power is reported. The filing is made in his capacity as an individual investor and indicates that he continues to own more than 5% of the company’s outstanding common stock.

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

(Amendment No. 1)

MAINZ BIOMED N.V.

(Name of Issuer)

Common Stock

(Title of Class of Securities)

N5436L101

(CUSIP Number)

10/17/2025

(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)

SCHEDULE 13G

CUSIP No. N5436L101

1

Names of Reporting Persons

Donahue Kevin Michael

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

TEXAS

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 685,000.00
6	Shared Voting Power
7	Sole Dispositive Power 685,000.00
8	Shared Dispositive Power

9

Aggregate Amount Beneficially Owned by Each Reporting Person

685,000.00

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)

10.7 %

12

Type of Reporting Person (See Instructions)

IN

SCHEDULE 13G

Item 1.
(a)	Name of issuer: MAINZ BIOMED N.V.
(b)	Address of issuer's principal executive offices: ROBERT KOCH STRASSE 50, ROBERT KOCH STRASSE 50, MAINZ, GERMANY, 55129.
Item 2.
(a)	Name of person filing: Kevin Donahue
(b)	Address or principal business office or, if none, residence: 2502 Kirby Street Dallas, Texas 75204
(c)	Citizenship: United States
(d)	Title of class of securities: Common Stock
(e)	CUSIP No.: N5436L101
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: 685,000
(b)	Percent of class: 10.7%
(c)	Number of shares as to which the person has:
	(i) Sole power to vote or to direct the vote: 685,000
	(ii) Shared power to vote or to direct the vote:
	(iii) Sole power to dispose or to direct the disposition of: 685,000
	(iv) Shared power to dispose or to direct the disposition of:
Item 5.	Ownership of 5 Percent or Less of a Class.
	Not Applicable
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:
	Not Applicable

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.

Donahue Kevin Michael

Signature:	Kevin Donahue
Name/Title:	Individual
Date:	01/20/2026

FAQ

What ownership stake in MYNZ does Kevin Donahue report?

Kevin Donahue reports beneficial ownership of 685,000 Mainz Biomed N.V. common shares, representing 10.7% of the outstanding class.

What type of filing did Mainz Biomed investor Kevin Donahue submit?

Kevin Donahue submitted an amended Schedule 13G/A, which reports his beneficial ownership of Mainz Biomed N.V. common stock as a holder of more than 5%.

Does Kevin Donahue have sole or shared voting power over MYNZ shares?

The filing states that Kevin Donahue has sole voting power and sole dispositive power over all 685,000 Mainz Biomed N.V. shares reported.

When was the ownership event that required this MYNZ Schedule 13G/A filing?

The date of the event requiring the filing is listed as 10/17/2025.

Is Kevin Donahue reporting ownership in Mainz Biomed N.V. as part of a group?

The Schedule 13G/A lists Kevin Donahue as an individual reporting person, and items regarding groups and subsidiaries are marked Not Applicable.

What class of securities of Mainz Biomed N.V. is covered in this Schedule 13G/A?

The filing covers Common Stock of Mainz Biomed N.V., identified by CUSIP N5436L101.