Merit Medical Systems, Inc. (MMSI) has 20 known insider and institutional holders on record. The largest holder is LAMPROPOULOS FRED P with 1,066,028 shares. Other notable holders include Lampropoulos Fred P. and Aronson Martha Goldberg.
Over the last 12 months, insiders have made 38 transactions in MMSI stock — 15 buys (valued at RSU Award) and 11 sells (valued at $9.72M). Insider buying has outpaced selling during this period, which may signal confidence in the company's prospects.
MMSI Insider Ownership
Top Holder
LAMPROPOULOS FRED P
1,066,028 shares
Buys (12 mo)
15
$0.00 value
Sells (12 mo)
11
$9.72M value
12-Month Transaction Activity
Top Insider Holders
| # |
Name |
Role |
Shares Owned |
Last Filed |
Relative Size |
| 1 |
Lampropoulos Fred P |
President and CEO |
1,066,028 |
2025-05-29 |
|
| 2 |
Lampropoulos Fred P. |
Executive Chairman |
1,019,955 |
2025-11-26 |
|
| 3 |
Aronson Martha Goldberg |
President and CEO |
47,792 |
2026-03-02 |
|
| 4 |
Anderson A Scott |
Director |
46,397 |
2023-08-14 |
|
| 5 |
Lloyd Brian G. |
Chief Legal Officer, Secretary |
44,499 |
2026-03-02 |
|
| 6 |
Wright Joseph |
Chief Commercial Officer |
37,743 |
2024-03-06 |
|
| 7 |
Parra Raul Jr. |
CFO and Treasurer |
36,506 |
2026-03-02 |
|
| 8 |
Peterson Neil W. |
Chief Operating Officer |
36,059 |
2026-03-02 |
|
| 9 |
Gunderson Thomas James |
Director |
36,034 |
2025-05-19 |
|
| 10 |
Voigt Michel J. |
Chief Human Resources Officer |
29,414 |
2026-03-02 |
|
| 11 |
Birkett Bernard |
Chief Financial Officer |
25,000 |
2018-03-06 |
|
| 12 |
Stillabower Michael E |
Director |
25,000 |
2018-06-11 |
|
| 13 |
Voigt Michel James |
Chief Human Resources Officer |
21,779 |
2025-03-06 |
|
| 14 |
Perry Rashelle |
Chief Legal Officer |
20,000 |
2015-02-18 |
|
| 15 |
Smith Christian Adam |
Chief Commercial Officer |
19,181 |
2026-03-02 |
|
| 16 |
Carpenter Lonny J |
Director |
17,367 |
2025-05-19 |
|
| 17 |
Ward Lynne |
Director |
12,809 |
2025-05-19 |
|
| 18 |
Millner F. Ann |
Director |
12,500 |
2024-07-02 |
|
| 19 |
Karras Nolan E. |
Director |
10,500 |
2020-05-29 |
|
| 20 |
Edelman Richard W |
Director |
10,184 |
2017-05-26 |
|
Recent Transactions (last 12 months)
| Date |
Name |
Role |
Type |
Shares |
Price |
Value |
| 2026-04-02 |
Lampropoulos Fred P. |
Officer |
Unknown |
- |
- |
- |
| 2026-02-26 |
Smith Christian Adam |
Chief Commercial Officer |
RSU Award |
8,203 |
- |
- |
| 2026-02-26 |
Peterson Neil W. |
Chief Operating Officer |
RSU Award |
7,690 |
- |
- |
| 2026-02-26 |
Voigt Michel J. |
Chief Human Resources Officer |
RSU Award |
7,690 |
- |
- |
| 2026-02-26 |
Parra Raul Jr. |
CFO and Treasurer |
RSU Award |
12,305 |
- |
- |
| 2026-02-26 |
Lloyd Brian G. |
Chief Legal Officer, Secretary |
RSU Award |
10,254 |
- |
- |
| 2026-02-26 |
Aronson Martha Goldberg |
President and CEO |
RSU Award |
28,198 |
- |
- |
| 2026-01-06 |
Peterson Neil W. |
Chief Operating Officer |
Option Exercise (Sell) |
5,000 |
$54.40 |
$272K |
| 2025-11-25 |
Lampropoulos Fred P. |
Executive Chairman |
Informative Sell |
10,000 |
$88.04 |
$880.38K |
| 2025-11-21 |
Lampropoulos Fred P. |
Executive Chairman |
Informative Sell |
25,000 |
$87.31 |
$2.18M |
| 2025-11-20 |
Lampropoulos Fred P. |
Executive Chairman |
Informative Sell |
20,000 |
$85.13 |
$1.7M |
| 2025-11-18 |
Lampropoulos Fred P. |
Executive Chairman |
Informative Sell |
5,000 |
$84.83 |
$424.13K |
| 2025-10-03 |
Aronson Martha Goldberg |
President and CEO |
RSU Award |
19,594 |
- |
- |
| 2025-10-03 |
Aronson Martha Goldberg |
Officer |
Unknown |
- |
- |
- |
| 2025-08-29 |
Lampropoulos Fred P. |
President and CEO |
Option Exercise (Sell) |
2,000 |
$55.73 |
$111.46K |
| 2025-08-22 |
Ward Lynne N. |
Director |
Option Exercise (Sell) |
3,000 |
$34.46 |
$103.38K |
| 2025-08-11 |
Ward Lynne N. |
Director |
Option Exercise (Sell) |
2,433 |
$34.46 |
$83.84K |
| 2025-06-13 |
Parra Raul Jr. |
CFO and Treasurer |
Option Exercise (Sell) |
9,681 |
$56.25 |
$544.56K |
| 2025-06-10 |
Lampropoulos Fred P. |
President and CEO |
Informative Sell |
400 |
$95.61 |
$38.24K |
| 2025-05-15 |
Smith Christian Adam |
Chief Commercial Officer |
Unknown |
- |
- |
- |
| 2024-03-31 |
Smith Christian Adam |
Chief Commercial Officer |
Unknown |
8,259 |
$73.95 |
$610.75K |
| 2022-10-04 |
Smith Christian Adam |
Chief Commercial Officer |
Unknown |
25,000 |
$70.50 |
$1.76M |
| 2025-06-05 |
Lampropoulos Fred P. |
President and CEO |
Informative Sell |
10,000 |
$95.19 |
$951.9K |
| 2025-06-02 |
Voigt Michel J. |
Chief Human Resources Officer |
Gift (Given) |
55 |
- |
- |
| 2025-05-30 |
Floyd David |
Director |
Informative Sell |
3,515 |
$94.16 |
$330.97K |
