Form 4 Filing for ACME UNITED CORP

This filing details transactions by Brian S. Olschan, President and COO of ACME UNITED CORP. On May 21, 2026, Olschan acquired 20,000 shares of Common Stock at $24.92 per share and disposed of 15,204 shares at $43.21 per share. The disposal was on a net share settlement basis. Additionally, Olschan exercised an employee stock option for 20,000 shares of Common Stock, with a conversion price of $24.92, and disposed of these shares, resulting in 241,700 shares following the transaction. Post-transaction, Olschan directly owns 46,005 shares of Common Stock.