North Star holds 6.64% of Acme United (ACU) common stock

Rhea-AI Filing Summary

Acme United Corporation received an updated large-shareholder disclosure from North Star Investment Management Corporation. As of 12/31/2025, North Star reports beneficial ownership of 252,624 shares of Acme United common stock, representing 6.64% of the outstanding class.

North Star has sole voting and dispositive power over 143,800 shares and shared voting and dispositive power over 108,824 shares. North Star certifies the shares were acquired and are held in the ordinary course of business and not for the purpose of changing or influencing control of Acme United.

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

(Amendment No. 24)

Acme United Corporation

(Name of Issuer)

Common Stock. $2.50 par value

(Title of Class of Securities)

004816104

(CUSIP Number)

12/31/2025

(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. 004816104

1

Names of Reporting Persons

North Star Investment Management Corporation

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 143,800.00
6	Shared Voting Power 108,824.00
7	Sole Dispositive Power 143,800.00
8	Shared Dispositive Power 108,824.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

252,624.00

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)

6.64 %

12

Type of Reporting Person (See Instructions)

IA

SCHEDULE 13G

Item 1.
(a)	Name of issuer: Acme United Corporation
(b)	Address of issuer's principal executive offices: 1 Waterview Drive, Shelton, CONNECTICUT 6484
Item 2.
(a)	Name of person filing: North Star Investment Management Corporation
(b)	Address or principal business office or, if none, residence: 20 N. Wacker Drive, Suite 1416 Chicago, IL 600606
(c)	Citizenship: USA
(d)	Title of class of securities: Common Stock. $2.50 par value
(e)	CUSIP No.: 004816104
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: 252,624
(b)	Percent of class: 6.64 %
(c)	Number of shares as to which the person has:
	(i) Sole power to vote or to direct the vote: 143,800
	(ii) Shared power to vote or to direct the vote: 108,824
	(iii) Sole power to dispose or to direct the disposition of: 143,800
	(iv) Shared power to dispose or to direct the disposition of: 108,824
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:

By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were acquired and are held in the ordinary course of business and 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.

North Star Investment Management Corporation

Signature:	/s/ Andrew Eisenberg
Name/Title:	Chief Compliance Officer
Date:	02/02/2026

FAQ

What ownership stake in Acme United (ACU) does North Star report in this Schedule 13G/A?

North Star Investment Management Corporation reports beneficial ownership of 252,624 Acme United shares, representing 6.64% of the common stock outstanding. This disclosure reflects its status as a significant institutional shareholder exceeding the 5% reporting threshold under U.S. securities rules.

How are North Star’s Acme United (ACU) voting and dispositive powers divided?

North Star reports sole voting and dispositive power over 143,800 Acme United shares and shared voting and dispositive power over 108,824 shares. This split shows which shares it can control alone versus those where it shares control with other parties.

Why did North Star file this Schedule 13G/A for Acme United (ACU)?

North Star filed because it beneficially owns more than 5% of Acme United’s common stock, triggering disclosure requirements. The filing states the securities were acquired and are held in the ordinary course of business, not to change or influence control of the company.

What type of investor is North Star in relation to Acme United (ACU)?

North Star Investment Management Corporation is identified as a U.S. investment adviser eligible to file on Schedule 13G. It certifies that its Acme United holdings are managed in the ordinary course for clients, without a control-seeking purpose toward the issuer.

Does North Star’s 6.64% Acme United (ACU) stake indicate a control intent?

The filing explicitly states the Acme United securities were not acquired and are not held for the purpose of changing or influencing control. North Star certifies ordinary-course investment activity, rather than participation in any transaction intended to affect control of the issuer.

Who signed the North Star Schedule 13G/A related to Acme United (ACU)?

The Schedule 13G/A is signed by Andrew Eisenberg, Chief Compliance Officer of North Star Investment Management Corporation. His signature certifies that, after reasonable inquiry, the information provided about the Acme United holdings is true, complete, and correct to the best of his knowledge.