MMSI Merit Medical Systems, Inc.

NASDAQ
$86.36

Merit Medical Systems, Inc. (MMSI) Insider Activity

What the officers, directors and large holders did with their own shares. Only open-market purchases and sales count toward the totals — grants, option exercises and shares withheld for tax are compensation mechanics, not decisions, and they're listed separately below.

30D 90D 6M 1Y
Insider signal In line Selling ran in line with MMSI's own trailing one-year pace, with 5% of sale value under a prearranged plan.
Cluster activity 0 buyers in the last 30 days 0 buyers in the last 90 days 1 seller in the last 90 days
Insiders buying
5
5 transactions
Insiders selling
3
8 transactions
Purchases
$573.3K
9,376 shares
Sales
$8.5M
98,949 shares
Net activity
-$7.9M
purchases less sales

How much of that selling was preplanned? 5% planned / 95% discretionary

10b5-1 plan sales $450.0K 1 transaction · 5,000 shares
Discretionary sales $8.0M 7 transactions · 93,949 shares

Largest single sale: $2.2M.

Where they traded

Buy Sell Dot area is proportional to transaction value.

Last open-market purchase: May 11, 2026 , by Smith Christian Adam .

Recent open-market activity

Date Insider Role Action Shares Price Value Held after
Peterson Neil W. CHIEF OPERATING OFFICER Sell 7,500 $90.45 $678.4K 18,051 −29.4% of holding
Peterson Neil W. CHIEF OPERATING OFFICER Sell 21,449 $85.00 $1.8M 25,551 −45.6% of holding
Smith Christian Adam Chief Commercial Officer Buy 1,626 $61.00 $99.2K 2,220
Ward Lynne N. Director Sell 5,000 $62.61 $313.0K 7,809 −39% of holding
Lloyd Brian G. CHIEF LEGAL OFFICER, SECRETARY Buy 2,000 $62.62 $125.3K 2,000
Aronson Martha Goldberg President and CEO Buy 2,000 $60.44 $120.9K 49,792
Parra Raul Jr. CFO AND TREASURER Buy 1,500 $61.01 $91.5K 58,843
Voigt Michel J. CHIEF HUMAN RESOURCES OFFICER Buy 2,250 $60.65 $136.5K 2,265
Peterson Neil W. CHIEF OPERATING OFFICER Sell 10b5-1 5,000 $90.00 $450.0K 28,369 −15% of holding
Lampropoulos Fred P. Executive Chairman Sell 10,000 $88.04 $880.4K 1,019,955 −1% of holding
Lampropoulos Fred P. Executive Chairman Sell 25,000 $87.31 $2.2M 1,029,955 −2.4% of holding
Lampropoulos Fred P. Executive Chairman Sell 20,000 $85.13 $1.7M 1,054,955 −1.9% of holding
Lampropoulos Fred P. Executive Chairman Sell 5,000 $84.83 $424.1K 1,074,955 −0.5% of holding

Form 4s are due within two business days of a transaction, so this is close to real time — unlike the quarterly 13F data on the Institutional tab. A single large sale often reflects a prearranged 10b5-1 plan rather than a fresh view, so read a pattern of sales rather than any one of them.