Updated Jul 16, 2026 · Last SEC filing 2026-06-17
MERIT MEDICAL SYSTEMS INC (MMSI) has filed 18 SEC Form 4 insider transactions in the last 90 days, with the most recent on 2026-06-17. 2 Form 8-K material event filings were reported by MMSI in the last 90 days. 1 Form 144 notices of proposed sale were filed for MMSI stock. InsiderAlpha tracks every MMSI SEC filing — Form 4, Form 144, and 8-K — in real time, including Rule 10b5-1 plan detection.
| SIC classification | Surgical & Medical Instruments & Apparatus (SIC 3841) |
|---|---|
| SEC CIK | 0000856982 |
| Form 4 filings (90d) | 18 |
|---|---|
| Form 8-K filings (90d) | 2 |
| Form 144 notices (90d) | 1 |
| Latest Form 4 filing | 2026-06-17 |
| Date | Insider | Role | Transaction | Shares | Price | Value | Filing |
|---|---|---|---|---|---|---|---|
| Voigt Michel J. | CHIEF HUMAN RESOURCES OFFICER | G — Bona-fide gift | 65 | $0.00 | — | SEC | |
| Lloyd Brian G. | CHIEF LEGAL OFFICER, SECRETARY | G — Bona-fide gift | 2.0K | $0.00 | — | SEC | |
| Gunderson Thomas J. | Insider | M — Option exercise | 13.8K | $52.17 | $717K | SEC | |
| Gunderson Thomas J. | Insider | M — Option exercise | 7.5K | $52.17 | $391K | SEC | |
| Ward Lynne N. | Insider | A — Grant or award | 3.5K | $0.00 | — | SEC | |
| Evans Stephen C. | Insider | A — Grant or award | 3.5K | $0.00 | — | SEC | |
| Kaiser Laura S. | Insider | A — Grant or award | 3.5K | $0.00 | — | SEC | |
| Perez Silvia M. | Insider | A — Grant or award | 3.5K | $0.00 | — | SEC | |
| Carpenter Lonny J. | Insider | A — Grant or award | 3.5K | $0.00 | — | SEC | |
| Gunderson Thomas J. | Insider | A — Grant or award | 3.5K | $0.00 | — | SEC | |
| MCDONNELL MICHAEL R | Insider | A — Grant or award | 3.5K | $0.00 | — | SEC | |
| Millner F. Ann | Insider | A — Grant or award | 3.5K | $0.00 | — | SEC | |
| Ward Scott R. | Insider | A — Grant or award | 3.5K | $0.00 | — | SEC | |
| Smith Christian Adam | Chief Commercial Officer | P — Open-market purchase | 1.6K | $61.00 | $99K | SEC | |
| Lloyd Brian G. | CHIEF LEGAL OFFICER, SECRETARY | P — Open-market purchase | 2.0K | $62.62 | $125K | SEC |
All transactions sourced from SEC EDGAR Form 4 filings for MERIT MEDICAL SYSTEMS INC (MMSI). Updated in real time as new filings are submitted to the SEC.
| Insider | Form 4 filings | Total transaction value |
|---|---|---|
| Gunderson Thomas J. | 5 | $1.11M |
| Voigt Michel J. | 2 | $136K |
| Ward Lynne N. | 2 | $313K |
| Lloyd Brian G. | 2 | $125K |
| MCDONNELL MICHAEL R | 1 | — |
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 MMSI 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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