Updated Jul 16, 2026 · Last SEC filing 2026-05-29
ACME UNITED CORP (ACU) has filed 4 SEC Form 4 insider transactions in the last 90 days, with the most recent on 2026-05-29. 2 Form 8-K material event filings were reported by ACU in the last 90 days. 1 Form 144 notices of proposed sale were filed for ACU stock. InsiderAlpha tracks every ACU SEC filing — Form 4, Form 144, and 8-K — in real time, including Rule 10b5-1 plan detection.
| SIC classification | Cutlery, Handtools & General Hardware (SIC 3420) |
|---|---|
| SEC CIK | 0000002098 |
| Form 4 filings (90d) | 4 |
|---|---|
| Form 8-K filings (90d) | 2 |
| Form 144 notices (90d) | 1 |
| Latest Form 4 filing | 2026-05-29 |
| Date | Insider | Role | Transaction | Shares | Price | Value | Filing |
|---|---|---|---|---|---|---|---|
| OLSCHAN BRIAN S | President and COO | S — Open-market sale | 4.8K | $42.00 | $203K | SEC | |
| JOHNSEN WALTER C | Chairman and CEO | G — Bona-fide gift | 5.8K | $42.23 | $246K | SEC | |
| OLSCHAN BRIAN S | President and COO | F — Tax withholding / forfeiture | 15.2K | $43.21 | $657K | SEC | |
| OLSCHAN BRIAN S | President and COO | M — Option exercise | 20.0K | $24.92 | $498K | SEC | |
| JOHNSEN WALTER C | Chairman and CEO | M — Option exercise | 30.0K | $23.99 | $720K | SEC | |
| JOHNSEN WALTER C | Chairman and CEO | F — Tax withholding / forfeiture | 24.2K | $40.53 | $979K | SEC | |
| MURPHY SUSAN H | Insider | G — Bona-fide gift | 1.2K | $44.08 | $53K | SEC | |
| OLSCHAN BRIAN S | President and COO | M — Option exercise | 15.0K | $24.92 | $374K | SEC | |
| DRISCOLL PAUL G | Chief Financial Officer | M — Option exercise | 15.0K | $21.49 | $322K | SEC | |
| OLSCHAN BRIAN S | President and COO | D — Derivative transaction | 15.0K | $45.88 | $688K | SEC | |
| DRISCOLL PAUL G | Chief Financial Officer | D — Derivative transaction | 15.0K | $45.88 | $688K | SEC | |
| JOHNSEN WALTER C | Chairman and CEO | D — Derivative transaction | 30.0K | $45.88 | $1.38M | SEC | |
| JOHNSEN WALTER C | Chairman and CEO | M — Option exercise | 30.0K | $21.49 | $645K | SEC | |
| HOLDEN RICHMOND Y JR | Insider | D — Derivative transaction | 2.5K | $44.36 | $111K | SEC | |
| HOLDEN RICHMOND Y JR | Insider | M — Option exercise | 2.5K | $21.20 | $53K | SEC |
All transactions sourced from SEC EDGAR Form 4 filings for ACME UNITED CORP (ACU). Updated in real time as new filings are submitted to the SEC.
| Insider | Form 4 filings | Total transaction value |
|---|---|---|
| JOHNSEN WALTER C | 4 | $2.67M |
| OLSCHAN BRIAN S | 4 | $1.86M |
Form 144 must be filed before insiders sell restricted or control stock above SEC thresholds. A cluster of Form 144 notices often precedes a wave of insider distribution.
SEC Form 4 transactions are reported with a one-letter code indicating the type of transaction. Common codes you'll see in ACU insider filings:
| P | Open-market purchase by the insider |
|---|---|
| S | Open-market sale by the insider |
| A | Grant, award, or other acquisition from the issuer |
| M | Exercise or conversion of derivative security (e.g. options) |
| F | Payment of exercise price or tax liability via share withholding |
| G | Bona-fide gift of securities |
| D | Disposition to the issuer (e.g. share buyback participation) |
| J | Other acquisition or disposition |
| X | Exercise of in-the-money or at-the-money derivative security |
| C | Conversion of derivative security |
| V | Transaction voluntarily reported earlier than required |
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