SEC Form 4
Merit Medical Systems Inc (MMSI) insider trading
In the 12 months to Oct 23, 2026, 3 MMSI insiders reported open-market sales of $8.5M across 8 filings; 5 insiders bought $573.3K.
Latest filing · Last 12 months · Source: SEC EDGAR · How we count
- Open-market sales
- $8.5M
- 8 filings · 3 insiders
- Open-market purchases
- $573.3K
- 5 filings
- Pre-arranged sales (10b5-1)
- 1 of 8
- $450.0K of $8.5M sold (5%)
Who traded MMSI, and when
- Purchase
- Sale
- Sale, pre-arranged (10b5-1)
MMSI daily close from Oct 23, 2025 to Oct 22, 2026, between $60.31 and $93.94, last $93.94. 8 sale and 5 purchase filings by 8 insiders, marked at their filing dates. Fred P. Lampropoulos, Executive Chairman: sold $5.2M across 4 filings, first filed Nov 20, 2025, last Nov 26, 2025. Neil W. Peterson, CHIEF OPERATING OFFICER: sold $3.0M across 3 filings, first filed Jan 8, 2026, last Aug 25, 2026. Lynne N. Ward, Director: sold $313.0K across 1 filing, first filed May 11, 2026, last May 11, 2026. Michel J. Voigt, CHIEF HUMAN RESOURCES OFFICER: bought $136.5K across 1 filing, first filed May 7, 2026, last May 7, 2026. Brian G. Lloyd, CHIEF LEGAL OFFICER, SECRETARY: bought $125.3K across 1 filing, first filed May 11, 2026, last May 11, 2026. Martha Goldberg Aronson, President and CEO: bought $120.9K across 1 filing, first filed May 7, 2026, last May 7, 2026. Christian Adam Smith, Chief Commercial Officer: bought $99.2K across 1 filing, first filed May 13, 2026, last May 13, 2026. Raul Parra JR., CFO AND TREASURER: bought $91.5K across 1 filing, first filed May 7, 2026, last May 7, 2026.
Largest mark · tap a row for others
Fred P. Lampropoulos · Executive Chairman
Filing 1 of 4 within a week · $5,189,907 total
Sale $424,130
5,000 shares at $84.83 avg
Filed Nov 20, 2025 · traded Nov 18
Close on filing date $84.88
Fred P. Lampropoulos · Executive Chairman
Executive Chairman
$5.2M soldNeil W. Peterson · CHIEF OPERATING OFFICER
CHIEF OPERATING OFFICER
$3.0M soldLynne N. Ward · Director
Director
$313.0K soldMichel J. Voigt · CHIEF HUMAN RESOURCES OFFICER
CHIEF HUMAN RESOURCES OFFICER
$136.5K boughtBrian G. Lloyd · CHIEF LEGAL OFFICER, SECRETARY
CHIEF LEGAL OFFICER, SECRETARY
$125.3K boughtMartha Goldberg Aronson · President and CEO
President and CEO
$120.9K boughtChristian Adam Smith · Chief Commercial Officer
Chief Commercial Officer
$99.2K boughtRaul Parra JR. · CFO AND TREASURER
CFO AND TREASURER
$91.5K boughtHas Merit Medical Systems Inc's CEO sold stock?
No. Martha Goldberg Aronson (CEO) made no open-market sales filed as CEO in the last 12 months.
Open-market trades
13 filings in the last 12 months| Insider | Role | Sold | Bought | Filings | Pre-arranged (10b5-1) | Last filed |
|---|---|---|---|---|---|---|
| Fred P. Lampropoulos | Executive Chairman | $5.2M | — | 4 | — | |
| Neil W. Peterson | CHIEF OPERATING OFFICER | $3.0M | — | 3 | 15% of sales | |
| Lynne N. Ward | Director | $313.0K | — | 1 | — | |
| Michel J. Voigt | CHIEF HUMAN RESOURCES OFFICER | — | $136.5K | 1 | — | |
| Brian G. Lloyd | CHIEF LEGAL OFFICER, SECRETARY | — | $125.3K | 1 | — | |
| Martha Goldberg Aronson | President and CEO | — | $120.9K | 1 | — | |
| Christian Adam Smith | Chief Commercial Officer | — | $99.2K | 1 | — | |
| Raul Parra JR. | CFO AND TREASURER | — | $91.5K | 1 | — |
| Filed | Insider | Type | Shares | Avg price | Value | Held after | Source |
|---|---|---|---|---|---|---|---|
traded | Neil W. Peterson CHIEF OPERATING OFFICER | Sale | 7,500 | $90.45 | $678.4K | 18,051 | |
traded | Neil W. Peterson CHIEF OPERATING OFFICER | Sale | 21,449 | $85.00 | $1.8M | 25,551 | |
traded | Christian Adam Smith Chief Commercial Officer | Purchase | 1,626 | $61.00 | $99.2K | 2,220 | |
traded | Brian G. Lloyd CHIEF LEGAL OFFICER, SECRETARY | Purchase | 2,000 | $62.63 | $125.3K | 2,000 | |
traded | Lynne N. Ward Director | Sale | 5,000 | $62.61 | $313.0K | 7,809 | |
traded | Martha Goldberg Aronson President and CEO | Purchase | 2,000 | $60.44 | $120.9K | 49,792 | |
traded | Raul Parra JR. CFO AND TREASURER | Purchase | 1,500 | $61.01 | $91.5K | 58,843 | |
traded | Michel J. Voigt CHIEF HUMAN RESOURCES OFFICER | Purchase | 2,250 | $60.65 | $136.5K | 2,265 | |
traded | Neil W. Peterson CHIEF OPERATING OFFICER | SalePre-arranged (10b5-1) | 5,000 | $90.00 | $450.0K | 28,369 | |
traded | Fred P. Lampropoulos Executive Chairman | Sale | 10,000 | $88.04 | $880.4K | 1,019,955 | |
traded | Fred P. Lampropoulos Executive Chairman | Sale | 25,000 | $87.31 | $2.2M | 1,029,955 | |
traded | Fred P. Lampropoulos Executive Chairman | Sale | 20,000 | $85.13 | $1.7M | 1,054,955 | |
traded | Fred P. Lampropoulos Executive Chairman | Sale | 5,000 | $84.83 | $424.1K | 1,074,955 |
GET /stocks/filings/vX/form-4?tickers=MMSI&filing_date.gte=2025-10-23&sort=filing_date.desc&limit=500{
"status": "OK",
"results": [
{
"tickers": [
"MMSI"
],
"issuer_cik": "0000856982",
"owner_cik": "0001926221",
"accession_number": "0001926221-26-000008",
"form_type": "4",
"filing_date": "2026-08-25",
"period_of_report": "2026-08-24",
"issuer_name": "MERIT MEDICAL SYSTEMS INC",
"issuer_trading_symbol": "MMSI",
"owner_name": "Peterson Neil W.",
"is_director": false,
"is_officer": true,
"is_ten_percent_owner": false,
"is_other": false,
"officer_title": "CHIEF OPERATING OFFICER",
"security_type": "non_derivative",
"record_type": "transaction",
"security_title": "Common Stock, No Par Value",
"transaction_timeliness": "O",
"aff_10b5_one": false,
"transaction_date": "2026-08-24",
"transaction_code": "S",
"equity_swap_involved": false,
"transaction_shares": 7500,
"transaction_price_per_share": 90.448,
"transaction_acquired_disposed": "D",
"shares_owned_following_transaction": 18051,
"transaction_value": 678360,
"direct_or_indirect": "D",
"footnotes": [
{
"id": "F1",
"description": "The price reported in Column 4 of Table 1 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $90.43 to $90.53, inclusive. The Reporting Person undertakes to provide to Merit Medical Systems, Inc., any security holder of Merit Medical Systems, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this Form 4."
}
]
},
{
"tickers": [
"MMSI"
],
"issuer_cik": "0000856982",
"owner_cik": "0001926221",
"accession_number": "0001926221-26-000006",
"form_type": "4",
"filing_date": "2026-08-05",
"period_of_report": "2026-08-04",
"issuer_name": "MERIT MEDICAL SYSTEMS INC",
"issuer_trading_symbol": "MMSI",
"owner_name": "Peterson Neil W.",
"is_director": false,
"is_officer": true,
"is_ten_percent_owner": false,
"is_other": false,
"officer_title": "CHIEF OPERATING OFFICER",
"security_type": "non_derivative",
"record_type": "transaction",
"security_title": "Common Stock, No Par Value",
"transaction_timeliness": "O",
"aff_10b5_one": false,
"transaction_date": "2026-08-04",
"transaction_code": "S",
"equity_swap_involved": false,
"transaction_shares": 21449,
"transaction_price_per_share": 85,
"transaction_acquired_disposed": "D",
"shares_owned_following_transaction": 25551,
"transaction_value": 1823165,
"direct_or_indirect": "D"
}
]
}
// trimmed to 2 resultsThe response includes every Form 4 record; this page keeps open-market purchases and sales on common stock and removes duplicate joint-filer rows.
Other insider activity (not market trades) · 36 records
- Option exercises3 records
- Tax withholding5 records
- Grants and awards25 records
- Gifts3 records
Reported on Form 4 but not purchases or sales in the market, so not counted in the totals above.
Build this yourself
This page joins two Massive endpoints: Form 4 filings and daily prices. Ask an agent to watch for new filings:
Using the Massive API (massive.com/docs/llms.txt), check Form 4 filings for MMSI every day with transaction_code=P and tell me when an insider files an open-market purchase, with their role, shares, price and the filing link.
How to read this page
- Open-market purchase or sale
- A buy or sell of the company's stock at market price. Grants, option exercises, shares withheld for tax, gifts and employee stock plan purchases are listed separately and not counted.
- Pre-arranged (10b5-1)
- The insider marked the filing as made under a trading plan set up in advance (SEC Rule 10b5-1). The mark covers the whole filing, and an unmarked filing may still be under a plan.
- Filing date
- Insiders have two business days to report a trade. Totals and the chart use the filing date, when the trade became public.