MMSI (Merit Medical Systems Inc)
Insider Trading Activity
Every open-market purchase and sale reported by MMSI officers, directors and 10%+ beneficial owners on SEC Form 4, which must be filed within two business days of the transaction. Sales often reflect scheduled 10b5-1 plans or tax withholding rather than a directional view, so read counts alongside the size and the filer.
Market data may be delayed, incomplete, or inaccurate. Not a recommendation to buy, sell, or hold any security. Verify quotes with your broker before trading. See Terms §17.
| Filed | Insider | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-08-05 | Neil W. Peterson | CHIEF OPERATING OFFICER | Sell | — | — |
| 2026-06-17 | Michel J. Voigt | CHIEF HUMAN RESOURCES OFFICER | G | — | — |
| 2026-06-08 | Brian G. Lloyd | CHIEF LEGAL OFFICER, SECRETARY | G | — | — |
| 2026-05-21 | Thomas J. Gunderson | Director | M | — | — |
| 2026-05-19 | Laura S. Kaiser | Director | A | — | — |
| 2026-05-19 | Silvia M. Perez | Director | A | — | — |
| 2026-05-19 | Thomas J. Gunderson | Director | A | — | — |
| 2026-05-19 | F. Ann Ed.D. Millner | Director | A | — | — |
| 2026-05-19 | Lonny J. Carpenter | Director | A | — | — |
| 2026-05-19 | Lynne N. Ward | Director | A | — | — |
| 2026-05-19 | Michael R. McDonnell | Director | A | — | — |
| 2026-05-19 | Scott R. Ward | Director | A | — | — |
| 2026-05-19 | Stephen C. Evans | Director | A | — | — |
| 2026-05-13 | Christian Adam Smith | Chief Commercial Officer | Buy | — | — |
| 2026-05-11 | Lynne N. Ward | Director | Sell | — | — |
| 2026-05-11 | Brian G. Lloyd | CHIEF LEGAL OFFICER, SECRETARY | Buy | — | — |
| 2026-05-07 | Martha Goldberg Aronson | President and CEO | Buy | — | — |
| 2026-05-07 | Michel J. Voigt | CHIEF HUMAN RESOURCES OFFICER | Buy | — | — |
| 2026-05-07 | Raul Jr. Parra | CFO AND TREASURER | Buy | — | — |
| 2026-03-02 | Brian G. Lloyd | CHIEF LEGAL OFFICER, SECRETARY | MIXED | — | — |
| 2026-03-02 | Neil W. Peterson | CHIEF OPERATING OFFICER | MIXED | — | — |
| 2026-03-02 | Michel J. Voigt | CHIEF HUMAN RESOURCES OFFICER | MIXED | — | — |
| 2026-03-02 | Christian Adam Smith | Chief Commercial Officer | MIXED | — | — |
| 2026-03-02 | Martha Goldberg Aronson | President and CEO | A | — | — |
| 2026-03-02 | Raul Jr. Parra | CFO AND TREASURER | MIXED | — | — |
| 2026-01-08 | Neil W. Peterson | CHIEF OPERATING OFFICER | MIXED | — | — |
| 2025-11-26 | Fred P. Lampropoulos | Executive Chairman | Sell | — | — |
| 2025-11-24 | Fred P. Lampropoulos | Executive Chairman | Sell | — | — |
| 2025-11-21 | Fred P. Lampropoulos | Executive Chairman | Sell | — | — |
| 2025-11-20 | Fred P. Lampropoulos | Executive Chairman | Sell | — | — |
| 2025-10-07 | Martha Goldberg Aronson | President and CEO | A | — | — |
| 2025-10-07 | Martha Goldberg Aronson | President and CEO | A | — | — |
| 2025-09-03 | Fred P. Lampropoulos | President and CEO | MIXED | — | — |
| 2025-08-25 | Lynne N. Ward | Director | MIXED | — | — |
| 2025-08-12 | Lynne N. Ward | Director | MIXED | — | — |
| 2025-06-17 | Raul Jr. Parra | CFO AND TREASURER | MIXED | — | — |
| 2025-06-12 | Fred P. Lampropoulos | President and CEO | Sell | — | — |
| 2025-06-09 | Fred P. Lampropoulos | President and CEO | Sell | — | — |
| 2025-06-03 | Michael R. McDonnell | Director | Sell | — | — |
| 2025-06-03 | Fred P. Lampropoulos | President and CEO | Sell | — | — |
| 2025-06-03 | David Floyd | Director | Sell | — | — |
| 2025-06-03 | Michel J. Voigt | CHIEF HUMAN RESOURCES OFFICER | G | — | — |
| 2025-05-29 | FRED P LAMPROPOULOS | President and CEO | Sell | — | — |
| 2025-05-19 | MICHAEL R MCDONNELL | Director | A | — | — |
| 2025-05-19 | Stephen C. Evans | Director | A | — | — |
| 2025-05-19 | Silvia Perez | Director | A | — | — |
| 2025-05-19 | David Floyd | Director | A | — | — |
| 2025-05-19 | Laura S. Kaiser | Director | A | — | — |
| 2025-05-19 | Thomas James Gunderson | Director | A | — | — |
| 2025-05-19 | David Floyd | Director | A | — | — |
| Insider | Role | Shares Held | Value |
|---|---|---|---|
| — | Executive Chairman | 1,028,235 | — |
| — | Director | 457,365 | — |
| — | Director | 123,618 | — |
| — | CHIEF LEGAL OFFICER, SECRETARY | 62,132 | — |
| — | CFO AND TREASURER | 61,542 | — |
| — | Director | 60,741 | — |
| — | President and CEO | 49,792 | — |
| — | CHIEF HUMAN RESOURCES OFFICER | 48,327 | — |
| — | CHIEF OPERATING OFFICER | 47,000 | — |
| — | Director | 46,397 | — |
| — | CHIEF COMMERCIAL OFFICER | 42,223 | — |
| — | Director | 38,000 | — |
| — | Director | 37,231 | — |
| — | Director | 35,000 | — |
| — | Executive V.P. of Sales | 34,173 | — |
| — | Chief Commercial Officer | 32,554 | — |
| — | CHIEF OPERATING OFFICER | 31,428 | — |
| — | Director | 20,824 | — |
| — | Chief Legal Officer | 16,977 | — |
| — | Director | 13,482 | — |
| — | Director | 13,352 | — |
| — | Director | 12,500 | — |
| — | Director | 11,266 | — |
| — | Director | 10,266 | — |
| — | Director | 10,152 | — |
Form 4 reports a change in beneficial ownership by an officer, director or 10%+ holder, and must be filed within two business days of the transaction — so this is close to real time, unlike the 45-day-lagged 13F institutional data.
Transaction codes matter more than the raw buy/sell count. Code P is an open-market purchase — an insider choosing to buy with their own money, which is the signal most research treats as informative. Code S is a sale, but sales are frequently pre-scheduled under a 10b5-1 plan or cover tax withholding on vesting equity, so a run of sales often says nothing directional. Codes A and M are grants and option exercises rather than open-market decisions.
Full filing history and per-insider positions are on the MMSI quote page; the site-wide leaderboard is on the insider transactions hub.