[Form 4] Acme United Corporation Insider Trading Activity

Rhea-AI Filing Summary

Rex Lynn Davidson, a director of Acme United Corp (ACU), reported exercising employee stock options on 08/12/2025 to acquire 2,500 shares of common stock at a price of $43.40 per share. Following the exercise, Davidson directly beneficially owned 29,000 shares. The Form 4 was signed on 08/14/2025. The filing shows a routine option exercise by an insider and records the updated direct ownership.

Positive

• Director increased direct ownership to 29,000 shares following the exercise, showing additional insider stock ownership.
• Timely Section 16 disclosure with the Form 4 signed on 08/14/2025 for an 08/12/2025 transaction.

Negative

• Cash outlay at exercise price of $43.40 per share for 2,500 shares (transaction reflects purchase, not a gratuitous grant).

Insights

Financial Analyst

TL;DR: Insider exercised options for 2,500 shares, increasing direct holdings to 29,000; routine, non-dilutive to reported ownership.

This Form 4 documents an option exercise by a company director at $43.40 per share on 08/12/2025, resulting in 2,500 newly acquired common shares and total direct ownership of 29,000 shares. The transaction is recorded as an acquisition from an employee stock option plan and appears to be a personal ownership action rather than a sale or transfer. For investors, this is a standard disclosure of insider stock ownership change without additional material context provided.

Corporate Governance Expert

TL;DR: Disclosure complies with Section 16 reporting; exercise increases director's direct stake and is timely reported.

The Form 4 indicates compliance with Section 16 timing requirements, with the earliest transaction on 08/12/2025 and a signed filing dated 08/14/2025. The nature of the transaction—exercise of employee stock options—does not indicate a change in governance or control. It documents alignment of the director with share ownership but contains no additional governance actions or related-party arrangements disclosed in this filing.

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
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Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Davidson Rex Lynn

(Last) (First) (Middle)

1 WATERVIEW DRIVE

(Street)

SHELTON CT 06484

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
ACME UNITED CORP [ ACU ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director		10% Owner
	Officer (give title below)		Other (specify below)

3. Date of Earliest Transaction (Month/Day/Year)
08/12/2025

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Employee Stock Option	$43.4	08/12/2025	08/12/2025	A		2,500		08/13/2025	08/12/2035	Common Stock	2,500	$43.4	29,000	D

Explanation of Responses:

	/s/ Rex Lynn Davidson	08/14/2025
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.

FAQ

What did Rex Lynn Davidson report on Form 4 for ACU?

He reported exercising employee stock options to acquire 2,500 shares of ACU common stock on 08/12/2025 at a price of $43.40 per share.

How many ACU shares does the reporting person own after the transaction?

The Form 4 states the reporting person directly beneficially owned 29,000 shares after the reported transaction.

When was the Form 4 filed and signed?

The transaction date is 08/12/2025 and the Form 4 bears the signature date of 08/14/2025.

What type of transaction is disclosed in the ACU Form 4?

The filing discloses an exercise of employee stock options resulting in acquisition of common stock (2,500 shares).

What was the exercise price for the ACU options exercised?

The exercise/conversion price reported for the derivative security is $43.40 per share.