Merit Medical Systems MMSI Insider Ownership

NASDAQ MMSI
$86.10 -1.09 (-1.25%)
As of: Sep 10, 2026 · 2:22 PM EDT

Insider Holdings by Owner

1.56Mn Shares

Insider Ownership Statistics

as of 30 Sep, 2026
Insider Ownership
0.016%
0% pp QoQ
Shares Held by Insiders
9.85K
filed for Sep 2026
0.00% QoQ
Shares Outstanding
59.92Mn
59,919,000 shares
Direct Holdings
9.85K
Indirect: 0
Net Shares Traded (QoQ)
0
no net change in Sep 2026
Insiders Holding Shares
21
with Form 4 holdings on file

Shares Owned by Insiders

Shares held % of outstanding
Latest
Average ownership
Peak ownership

Shares Purchased/Sold by Insiders

Bought Sold
Latest quarter
Net over range
Buying quarters

Insider Ownership Summary

Quarter ending 30 Sep, 2026

MMSI's three largest insider shareholders as of September 09, 2026 are Fred P. Lampropoulos (Executive Chairman, 1.02Mn shares), Thomas J. Gunderson (Director, 60.74K shares), Brian G. Lloyd (Chief Legal Officer, Secretary, 60.13K shares).

Form 4 Holdings

Insiders Holding MMSI

Insiders 21
Shares held 1.56Mn
Of outstanding 2.61%
# Insider Position Direct Indirect Total Share of Insiders Last Filed
1 Fred P. Lampropoulos Executive Chairman 1,019,955 0 1,019,955 65.3% 26 Nov, 2025
2 Thomas J. Gunderson Director 60,741 0 60,741 3.9% 21 May, 2026
3 Brian G. Lloyd Chief Legal Officer, Secretary 60,132 0 60,132 3.9% 08 Jun, 2026
4 Raul Jr. Parra Cfo And Treasurer 58,843 0 58,843 3.8% 07 May, 2026
5 Martha Goldberg Aronson President And Ceo 47,792 0 47,792 3.1% 02 Mar, 2026
6 A Scott Anderson Director 46,397 0 46,397 3.0% 14 Aug, 2023
7 Michel J. Voigt Chief Human Resources Officer 45,412 0 45,412 2.9% 25 Aug, 2026
8 Joseph Wright Chief Commercial Officer 42,223 0 42,223 2.7% 08 Mar, 2024
9 F. Ann Ed.D. Millner Director 38,000 0 38,000 2.4% 19 May, 2026
10 Lonny J Carpenter Director 27,889 0 27,889 1.8% 19 May, 2025
11 Neil W. Peterson Chief Operating Officer 25,370 0 25,370 1.6% 25 Aug, 2026
12 Ronald Frost Chief Operating Officer 15,144 0 15,144 1.0% 12 Aug, 2022
13 Laura S. Kaiser Director 13,352 0 13,352 0.9% 19 May, 2026
14 Lynne N. Ward Director 11,266 0 11,266 0.7% 19 May, 2026
15 Stephen C. Evans Director 10,266 0 10,266 0.7% 19 May, 2026
16 James T. Hogan Director 10,152 0 10,152 0.7% 26 May, 2022
17 Michael R. Mcdonnell Director 9,852 0 9,852 0.6% 19 May, 2026
18 Silvia M. Perez Director 8,040 0 8,040 0.5% 19 May, 2026
19 David Floyd Director 0 4,880 4,880 0.3% 03 Jun, 2025
20 Scott R. Ward Director 3,457 0 3,457 0.2% 19 May, 2026
21 Christian Adam Smith Chief Commercial Officer 0 2,220 2,220 0.1% 13 May, 2026

Each row is that insider’s most recently reported position, from Form 4 filings over the last 60 months — which is why this total does not tie to the quarterly series above, where a quarter counts only the insiders who filed in it. Shares held through a fund or institutional portfolio are counted on the institutional ownership page instead.

Form 4 Filings

2,867 Insider Transactions

Source SEC Form 4
Latest quarter Sep 2026
Download Data
Date Insider Position Transaction Shares Price Value Shares Held After Ownership
24 Aug, 2026 Neil W. Peterson Chief Operating Officer Disposed S 7,500 $90.45 $678.36K 18,051 Direct
24 Aug, 2026 Michel J. Voigt Chief Human Resources Officer Disposed G 650 $0.00 $0 45,412 Direct
04 Aug, 2026 Neil W. Peterson Chief Operating Officer Disposed S 21,449 $85.00 $1.82Mn 25,551 Direct
15 Jun, 2026 Michel J. Voigt Chief Human Resources Officer Disposed G 65 $0.00 $0 46,062 Direct
05 Jun, 2026 Brian G. Lloyd Chief Legal Officer, Secretary Disposed G 2,000 $0.00 $0 60,132 Direct
20 May, 2026 Thomas J. Gunderson Director Acquired M 13,750 $52.17 $717.34K 53,241 Direct
20 May, 2026 Thomas J. Gunderson Director Acquired M 7,500 $52.17 $391.28K 60,741 Direct
20 May, 2026 Thomas J. Gunderson Director Disposed M 13,750 $0.00 $0 0 Direct
20 May, 2026 Thomas J. Gunderson Director Disposed M 7,500 $0.00 $0 0 Direct
18 May, 2026 Michael R. Mcdonnell Director Acquired A 3,457 $0.00 $0 9,852 Direct
18 May, 2026 Silvia M. Perez Director Acquired A 3,457 $0.00 $0 8,040 Direct
18 May, 2026 Thomas J. Gunderson Director Acquired A 3,457 $0.00 $0 39,491 Direct
18 May, 2026 Laura S. Kaiser Director Acquired A 3,457 $0.00 $0 13,352 Direct
18 May, 2026 F. Ann Ed.D. Millner Director Acquired A 3,457 $0.00 $0 38,000 Direct
18 May, 2026 Lonny J. Carpenter Director Acquired A 3,457 $0.00 $0 20,824 Direct
18 May, 2026 Lynne N. Ward Director Acquired A 3,457 $0.00 $0 11,266 Direct
18 May, 2026 Stephen C. Evans Director Acquired A 3,457 $0.00 $0 10,266 Direct
18 May, 2026 Scott R. Ward Director Acquired A 3,457 $0.00 $0 3,457 Direct
11 May, 2026 Christian Adam Smith Chief Commercial Officer Acquired P 1,626 $61.00 $99.19K 2,220 Indirect
07 May, 2026 Lynne N. Ward Director Disposed S 5,000 $62.61 $313.04K 7,809 Direct