Acme United COO Brian S. Olschan exercises stock options

The common-stock entries separately report 33,793 shares delivered or withheld for payment of exercise price or tax liability.

Rhea-AI Filing Summary

Acme United Corp (ACU) President and COO Brian S. Olschan reported exercising employee stock options on October 28, 2026: 35,000 shares at $23.05, 9,200 at $23.94 and 7,500 at $24.06. The corresponding common-stock entries report acquisitions in those amounts. Other common-stock entries report 27,702, 3,348 and 2,743 shares delivered or withheld for payment of exercise price or tax liability. A related footnote describes an option exercise as effected on a net share settlement basis.

Insider Trade Summary

51,700 shares exercised/converted

Exercise 9 txns

Insider OLSCHAN BRIAN S

Role President and COO

Type	Security	Shares	Price	Value
Exercise	Employee Stock Option	35,000	$23.05	$807K
Exercise	Employee Stock Option	9,200	$23.94	$220K
Exercise	Employee Stock Option	7,500	$24.06	$180K
Exercise	Common Stock	35,000	$23.05	$807K
Exercise Price or Tax Liability	Common Stock F1	27,702	$65.78	$1.82M
Exercise	Common Stock	9,200	$23.94	$220K
Exercise Price or Tax Liability	Common Stock F1	3,348	$65.78	$220K
Exercise	Common Stock	7,500	$24.06	$180K
Exercise Price or Tax Liability	Common Stock F1	2,743	$65.78	$180K

Holdings After Transaction: Employee Stock Option — 489,200 contracts (Direct); Common Stock — 59,079 shares (Direct)

Footnotes (1)

1. F1. The exercise of the subject option was effected on a net share settlement basis.

Key Figures

Option shares exercised: 35,000 shares Exercise price: $23.05 per share Option shares exercised: 9,200 shares +3 more

6 metrics

Option shares exercised 35,000 shares October 28, 2026 exercise at $23.05 per share

Exercise price $23.05 per share Employee stock option exercised October 28, 2026

Option shares exercised 9,200 shares October 28, 2026 exercise at $23.94 per share

Exercise price $23.94 per share Employee stock option exercised October 28, 2026

Option shares exercised 7,500 shares October 28, 2026 exercise at $24.06 per share

Exercise price $24.06 per share Employee stock option exercised October 28, 2026

Key Terms

Employee Stock Option, net share settlement basis, exercise price or tax liability

3 terms

Employee Stock Option financial

"Employee Stock Option"

An employee stock option is a promise that lets a worker buy company shares later at a predetermined price, often after they stay for a certain period or meet performance goals — think of it like a coupon that locks in today's price for a future purchase. It matters to investors because options align employees’ incentives with company performance, can increase the number of shares outstanding (dilution) when exercised, and represent a compensation cost that affects reported profits and shareholder value.

net share settlement basis financial

"effected on a net share settlement basis"

exercise price or tax liability financial

"payment of exercise price or tax liability"

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

How many ACU shares did Brian S. Olschan acquire through option exercises?

Brian S. Olschan, President and COO, exercised options covering 35,000 shares at $23.05, 9,200 at $23.94 and 7,500 at $24.06 on October 28, 2026. Common-stock transaction entries report acquisitions matching those three amounts.

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

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Available on EDGAR 10/28/2026 - 04:30 PM EDT Accepted by SEC EDGAR 10/28/2026 - 04:30 PM EDT Learn about SEC filing dates

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
Estimated average burden
hours per response:			0.5

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^*

OLSCHAN BRIAN S

(Last) (First) (Middle)

1 WATERVIEW DRIVE

(Street)

SHELTON CONNECTICUT 06484

(City) (State) (Zip)

UNITED STATES

(Country)

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
X	Officer (give title below)		Other (specify below)
	President and COO

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
10/28/2026

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

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

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

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
Common Stock	10/28/2026	10/28/2026	M		35,000	A	$23.05	76,172	D
Common Stock	10/28/2026	10/28/2026	F		27,702(1)	D	$65.78	48,470	D
Common Stock	10/28/2026	10/28/2026	M		9,200	A	$23.94	57,670	D
Common Stock	10/28/2026	10/28/2026	F		3,348(1)	A	$65.78	54,322	D
Common Stock	10/28/2026	10/28/2026	M		7,500	A	$24.06	61,822	D
Common Stock	10/28/2026	10/28/2026	F		2,743(1)	D	$65.78	59,079	D

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	$23.05	10/28/2026	10/28/2026	M			35,000	08/12/2024	08/12/2030	Common Stock	35,000	$23.05	171,700	D
Employee Stock Option	$23.94	10/28/2026	10/28/2026	M			9,200	01/23/2022	01/23/2028	Common Stock	9,200	$23.94	162,500	D
Employee Stock Option	$24.06	10/28/2026	10/28/2026	M			7,500	01/21/2024	01/21/2030	Common Stock	7,500	$24.06	155,000	D

Explanation of Responses:

1. The exercise of the subject option was effected on a net share settlement basis.

	/s/ Brian S. Olschan	10/28/2026
	** 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.
* Form 4: SEC 1474 (03-26)