MERIT MED SYS INC MMSI
COM · Common Stock · CUSIP 589889104
Company in South Jordan, United States
* Summed across managers. Shares that two managers' reports both contain – a subsidiary's holdings that its parent's report includes too, or a sub-adviser's in its client's – are counted once ($32.3m this quarter). Holder counts are more reliable. Shares outstanding: 59.7m as of 2026-07-28, from the company's own SEC filing; the percentage can still exceed 100%: lent-out shares are counted by the lender and the buyer, and some reports overlap without saying so. Implied quarter-end price ≈ $69.36. Options: 4 managers hold calls ($62.1m notional), 1 hold puts ($845.9k).
Trends to Q2 2026
Institutional holders
Managers reporting a position, each quarter
Numbers
| Quarter | Holders |
|---|---|
| Q3 2022 | 242 |
| Q4 2022 | 279 |
| Q1 2023 | 287 |
| Q2 2023 | 313 |
| Q3 2023 | 274 |
| Q4 2023 | 290 |
| Q1 2024 | 305 |
| Q2 2024 | 320 |
| Q3 2024 | 378 |
| Q4 2024 | 386 |
| Q1 2025 | 381 |
| Q2 2025 | 381 |
| Q3 2025 | 380 |
| Q4 2025 | 390 |
| Q1 2026 | 400 |
| Q2 2026 | 404 |
Buyers vs sellers
Managers adding to or starting a position, vs cutting or selling out
Numbers
| Quarter | Bought or added | Cut or sold out |
|---|---|---|
| Q3 2024 | 208 | 135 |
| Q4 2024 | 206 | 164 |
| Q1 2025 | 190 | 182 |
| Q2 2025 | 187 | 185 |
| Q3 2025 | 194 | 181 |
| Q4 2025 | 220 | 161 |
| Q1 2026 | 221 | 178 |
| Q2 2026 | 245 | 179 |
Calls vs puts
Options held, notional value, last 4 quarters. P/C = puts ÷ calls
Numbers
| Quarter | Calls | Puts | P/C |
|---|---|---|---|
| Q3 2025 | $77.6m | $2.3m | 0.03 |
| Q4 2025 | $83.7m | $4.6m | 0.05 |
| Q1 2026 | $59.3m | $34.5k | 0.00 |
| Q2 2026 | $62.1m | $845.9k | 0.01 |
Biggest buyers
| NEUBERGER BERMAN GROUP LLC | Added | +996.6k |
| BlackRock, Inc. | Added | +630.2k |
| Irenic Capital Management LP | New | +542.6k |
| AQR CAPITAL MANAGEMENT LLC | Added | +439.2k |
| WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC | Added | +360.3k |
| TWO SIGMA INVESTMENTS, LP | Added | +323.6k |
| PRICE T ROWE ASSOCIATES INC /MD/ | Added | +303.8k |
| MAVERICK CAPITAL LTD | Added | +264.5k |
| SG Capital Management LLC | New | +243.5k |
| J. Goldman & Co LP | New | +242.8k |
Biggest sellers
| Point72 Asset Management, L.P. | Reduced | -538.2k |
| FULLER & THALER ASSET MANAGEMENT, INC. | Reduced | -502.5k |
| Freestone Grove Partners LP | Reduced | -366.3k |
| ArrowMark Colorado Holdings LLC | Sold out | -348.6k |
| MORGAN STANLEY | Reduced | -254.1k |
| FRANKLIN RESOURCES INC | Reduced | -242.0k |
| MARSHALL WACE, LLP | Reduced | -225.2k |
| RENAISSANCE TECHNOLOGIES LLC | Reduced | -188.8k |
| Conestoga Capital Advisors, LLC | Reduced | -187.7k |
| Qube Research & Technologies Ltd | Reduced | -182.2k |
Biggest calls
| UBS Group AG | Unchanged | $59.7m860.9k shares |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | New | $1.1m15.8k shares |
| CITADEL ADVISORS LLC | New | $804.3k11.6k shares |
| IMC-Chicago, LLC | New | $478.4k6.9k shares |
Biggest puts
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | New | $845.9k12.2k shares |
Options at notional value: the value of the shares the contracts control, as filers report them, not what the options cost. Not included in the holders, shares or buying above.
Major shareholders (over 5%)
Anyone who owns more than 5% of a class of the company's shares has to say so: on Schedule 13D if they may try to influence or control the company, on 13G if they're a passive investor, and update it as the stake changes. Each holder's latest filing, from 19 Dec 2024 on; percentages are of the share class, as the holder worked them out.
| Holder | Stake |
|---|---|
| BlackRock, Inc. 13G · institution filed 2025-10-17 | 14.1% |
| VANGUARD PORTFOLIO MANAGEMENT LLC 13G · institution new · filed 2026-04-29 | 6.0% |
| VANGUARD CAPITAL MANAGEMENT LLC 13G · institution new · filed 2026-04-30 | 5.2% |
Fell to 5% or below in the last year: VANGUARD GROUP INC (0.0%, 2026-03-27; now reported by VANGUARD PORTFOLIO MANAGEMENT LLC)
Insider purchases and sales since 1 Apr 2026
Shares bought or sold by the company's own officers, directors and 10% owners, in the open market or privately, as they reported to the SEC on Form 4 (due within two business days of the trade). Grants, option exercises, shares withheld for tax and gifts aren't included.
Officers and directors buying vs selling
Number of people, by quarter (10% owners not included)
Numbers
| Quarter | Buying | Bought | Selling | Sold | Sold under a plan |
|---|---|---|---|---|---|
| Q4 2024 | 0 | — | 3 | $5.2m | $1.3m |
| Q1 2025 | 0 | — | 6 | $13.4m | $1.8m |
| Q2 2025 | 0 | — | 6 | $8.5m | $2.9m |
| Q3 2025 | 0 | — | 1 | $472.2k | — |
| Q4 2025 | 0 | — | 1 | $5.2m | — |
| Q1 2026 | 0 | — | 1 | $450.0k | $450.0k |
| Q2 2026 | 5 | $573.3k | 1 | $313.1k | — |
| Q3 2026 | 0 | — | 1 | $2.5m | — |
| Date | Insider | Trade | Value |
|---|---|---|---|
| 2026-08-24 | Peterson Neil W. CHIEF OPERATING OFFICER | Sold | $678.4k7.5k shares |
| 2026-08-04 | Peterson Neil W. CHIEF OPERATING OFFICER | Sold | $1.8m21.4k shares |
| 2026-05-11 | Smith Christian Adam Chief Commercial Officer · By 401(k) Plan | Bought | $99.2k1.6k shares |
| 2026-05-07 | Ward Lynne N. Director | Sold | $313.1k5.0k shares |
| 2026-05-07 | Lloyd Brian G. CHIEF LEGAL OFFICER, SECRETARY · By 401 (k) plan | Bought | $125.3k2.0k shares |
| 2026-05-06 | Aronson Martha Goldberg President and CEO, director | Bought | $120.9k2.0k shares |
| 2026-05-06 | Parra Raul Jr. CFO AND TREASURER | Bought | $91.5k1.5k shares |
| 2026-05-05 | Voigt Michel J. CHIEF HUMAN RESOURCES OFFICER · By 401(k) Plan | Bought | $136.5k2.2k shares |
Their holding: how much the trade added to or took from the insider's holding (direct, or the trust or fund named). The same trade is sometimes reported by more than one insider, such as a fund and the director who represents it; totals count it once. A value is left blank where the reported price is far from the market price (usually a typo).
Holders, Q2 2026
| Manager | Shares | Change |
|---|---|---|
| BlackRock, Inc. 0.01% of their portfolio | 9.5m $656.3m | Added +630.2k |
| VANGUARD PORTFOLIO MANAGEMENT LLC 0.01% of their portfolio | 3.5m $240.9m | Reduced -49.3k |
| VANGUARD CAPITAL MANAGEMENT LLC 0.00% of their portfolio | 2.6m $179.6m | Reduced -65.7k |
| STATE STREET CORP 0.01% of their portfolio | 2.5m $171.6m | Added +113.5k |
| Conestoga Capital Advisors, LLC 2.99% of their portfolio | 2.0m $137.3m | Reduced -187.7k |
| GEODE CAPITAL MANAGEMENT, LLC 0.01% of their portfolio | 1.6m $112.8m | Added +117.6k |
| FULLER & THALER ASSET MANAGEMENT, INC. 0.30% of their portfolio | 1.6m $111.8m | Reduced -502.5k |
| DIMENSIONAL FUND ADVISORS LP 0.02% of their portfolio | 1.5m $101.2m | Added +221.5k |
| NOMURA ASSET MANAGEMENT INTERNATIONAL INC. 0.13% of their portfolio | 1.3m $88.7m | Added +80.9k |
| CONGRESS ASSET MANAGEMENT CO 0.51% of their portfolio | 1.2m $82.1m | Added +155.1k |
| WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC 0.24% of their portfolio | 1.1m $78.9m | Added +360.3k |
| Greenhouse Funds LLLP 3.91% of their portfolio | 1.1m $74.3m | Reduced -50.3k |
| CITIGROUP INC 0.03% of their portfolio | 1.0m $70.9m | Reduced -40.2k |
| FMR LLC 0.00% of their portfolio | 1.0m $70.2m | Added +7.9k |
| WESTWOOD HOLDINGS GROUP INC 0.53% of their portfolio | 1.0m $70.1m | Added +64.9k |
| MORGAN STANLEY 0.00% of their portfolio | 1.0m $69.8m | Reduced -254.1k |
| NEUBERGER BERMAN GROUP LLC 0.05% of their portfolio | 1.0m $69.5m | Added +996.6k |
| MAVERICK CAPITAL LTD 0.61% of their portfolio | 978.6k $67.9m | Added +264.5k |
| PRICE T ROWE ASSOCIATES INC /MD/ 0.01% of their portfolio | 958.7k $66.5m | Added +303.8k |
| CITADEL ADVISORS LLC 0.04% of their portfolio | 909.9k $63.1m | Reduced -52.9k |
| ROYAL BANK OF CANADA 0.01% of their portfolio | 826.9k $57.3m | Reduced -94.4k |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.01% of their portfolio | 743.9k $51.6m | Added +68.5k |
| NORGES BANK 0.00% of their portfolio | 711.2k $49.3m | Not comparable |
| NORTHERN TRUST CORP 0.01% of their portfolio | 709.3k $49.2m | Added +27.4k |
| MASSACHUSETTS FINANCIAL SERVICES CO /MA/ 0.01% of their portfolio | 679.2k $47.1m | Added +231.7k |
| JPMORGAN CHASE & CO 0.00% of their portfolio | 644.0k $45.3m | Added +27.0k |
| Nuveen, LLC 0.01% of their portfolio | 594.8k $41.2m | Added +48.7k |
| Irenic Capital Management LP 2.71% of their portfolio | 542.6k $37.6m | New |
| Aberdeen Group plc 0.05% of their portfolio | 538.2k $37.3m | Added +109.9k |
| BANK OF AMERICA CORP /DE/ 0.00% of their portfolio | 534.4k $37.1m | Reduced -46.5k |
| WELLS FARGO & COMPANY/MN 0.01% of their portfolio | 523.5k $36.3m | Added +32.3k |
| GOLDMAN SACHS GROUP INC 0.00% of their portfolio | 508.2k $35.2m | Reduced -139.6k |
| UBS Group AG 0.01% of their portfolio | 495.6k $34.4m | Added +155.0k |
| MANUFACTURERS LIFE INSURANCE COMPANY, THE 0.03% of their portfolio | 484.4k $33.6m | Added +36.1k |
| FORT WASHINGTON INVESTMENT ADVISORS INC /OH/ 0.17% of their portfolio | 476.1k $33.0m | Added +55.3k |
| OBERWEIS ASSET MANAGEMENT INC/ 0.68% of their portfolio | 473.4k $32.8m | Added +49.2k |
| Boston Trust Walden Corp 0.25% of their portfolio | 472.9k $32.8m | Added +195.6k |
| FRONTIER CAPITAL MANAGEMENT CO LLC 0.30% of their portfolio | 468.5k $32.5m | Added +37.9k |
| AQR CAPITAL MANAGEMENT LLC 0.01% of their portfolio | 464.2k $32.2m | Added +439.2k |
| NOMURA HOLDINGS INC 0.13% of their portfolio | 440.7k $30.6m | Added +15.4k |
| TWO SIGMA INVESTMENTS, LP 0.02% of their portfolio | 434.7k $30.1m | Added +323.6k |
| Bank of New York Mellon Corp 0.00% of their portfolio | 410.6k $28.5m | Added +26.8k |
| Champlain Investment Partners, LLC 0.72% of their portfolio | 403.9k $28.0m | Added +113.4k |
| VANGUARD FIDUCIARY TRUST CO 0.01% of their portfolio | 397.6k $27.6m | Reduced -13.0k |
| PRINCIPAL FINANCIAL GROUP INC 0.01% of their portfolio | 350.6k $24.3m | Added +3.9k |
| MARSHALL WACE, LLP 0.02% of their portfolio | 349.2k $24.2m | Reduced -225.2k |
| Aristotle Capital Boston, LLC 1.47% of their portfolio | 316.5k $21.9m | Reduced -61.0k |
| SEI INVESTMENTS CO 0.02% of their portfolio | 296.5k $20.6m | Added +68.0k |
| FIFTH THIRD BANCORP 0.03% of their portfolio | 296.5k $20.6m | Reduced -16.6k |
| ENVESTNET ASSET MANAGEMENT INC 0.00% of their portfolio | 281.4k $19.5m | Added +16.6k |
| AMERIPRISE FINANCIAL INC 0.00% of their portfolio | 276.8k $19.2m | Added +25.9k |
| Assenagon Asset Management S.A. 0.01% of their portfolio | 270.8k $18.8m | Added +64.9k |
| RAYMOND JAMES FINANCIAL INC 0.01% of their portfolio | 269.2k $18.7m | Reduced -107.5k |
| MetLife Investment Management, LLC 0.08% of their portfolio | 257.4k $17.8m | Added +225.3k |
| SG Capital Management LLC 1.53% of their portfolio | 243.5k $16.9m | New |
| J. Goldman & Co LP 0.59% of their portfolio | 242.8k $16.8m | New |
| SILVERCREST ASSET MANAGEMENT GROUP LLC 0.11% of their portfolio | 239.2k $16.6m | Reduced -20.5k |
| Public Sector Pension Investment Board 0.04% of their portfolio | 208.9k $14.5m | Reduced -7.2k |
| Handelsbanken Fonder AB 0.04% of their portfolio | 203.8k $14.1m | Reduced -1.1k |
| Point72 Asset Management, L.P. 0.02% of their portfolio | 203.7k $14.1m | Reduced -538.2k |
| PFM Health Sciences, LP 1.19% of their portfolio | 197.0k $13.7m | Added +34.6k |
| Rockefeller Capital Management L.P. 0.02% of their portfolio | 196.4k $13.6m | Reduced -54.4k |
| D. E. Shaw & Co., Inc. 0.01% of their portfolio | 189.7k $13.2m | Added +55.5k |
| Connor, Clark & Lunn Investment Management Ltd. 0.02% of their portfolio | 186.4k $12.9m | Added +62.0k |
| Invesco Ltd. 0.00% of their portfolio | 186.2k $12.9m | Added +3.8k |
| Walleye Capital LLC 0.06% of their portfolio | 180.7k $12.5m | Added +29.7k |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC 0.00% of their portfolio | 173.9k $12.1m | Added +18.3k |
| Man Group plc 0.02% of their portfolio | 171.9k $11.9m | Reduced -5.8k |
| Balyasny Asset Management L.P. 0.02% of their portfolio | 161.8k $11.2m | Reduced -158.9k |
| Tidal Investments LLC 0.03% of their portfolio | 160.2k $11.1m | Reduced -45.1k |
| WINTON GROUP Ltd 0.33% of their portfolio | 147.6k $10.2m | Reduced -11.2k |
| Creative Planning 0.01% of their portfolio | 146.9k $10.2m | Added +71.8k |
| RHUMBLINE ADVISERS 0.01% of their portfolio | 145.9k $10.1m | Reduced -13.6k |
| WELLINGTON MANAGEMENT GROUP LLP 0.00% of their portfolio | 143.0k $9.9m | Reduced -160.8k |
| Curi Capital, LLC 0.15% of their portfolio | 140.2k $9.7m | Reduced -20.9k |
| EULAV Asset Management 0.31% of their portfolio | 138.0k $9.6m | Unchanged |
| OSAIC HOLDINGS, INC. 0.01% of their portfolio | 137.2k $9.5m | Added +30.8k |
| Legal & General Group Plc 0.00% of their portfolio | 136.6k $9.5m | Reduced -72 |
| Ranger Investment Management, L.P. 0.57% of their portfolio | 130.4k $9.0m | Reduced -9.0k |
| RENAISSANCE TECHNOLOGIES LLC 0.01% of their portfolio | 125.4k $8.7m | Reduced -188.8k |
| Amundi 0.00% of their portfolio | 124.8k $8.7m | Added +12.7k |
| RENAISSANCE GROUP LLC 0.34% of their portfolio | 121.2k $8.4m | Reduced -1.4k |
| Swiss National Bank 0.00% of their portfolio | 119.7k $8.3m | Added +2.5k |
| AMERICAN CAPITAL MANAGEMENT INC 0.33% of their portfolio | 105.0k $7.3m | Reduced -10.8k |
| Impax Asset Management Group plc 0.04% of their portfolio | 97.6k $6.8m | Reduced -2.4k |
| DEUTSCHE BANK AG\ 0.00% of their portfolio | 95.3k $6.6m | Added +8.7k |
| California Public Employees Retirement System 0.00% of their portfolio | 94.2k $6.5m | Added +722 |
| AMERICAN CENTURY COMPANIES INC 0.00% of their portfolio | 92.4k $6.4m | Added +6.8k |
| PANAGORA ASSET MANAGEMENT INC 0.02% of their portfolio | 90.1k $6.2m | Added +34.2k |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP 0.00% of their portfolio | 88.2k $6.1m | New |
| TRILLIUM ASSET MANAGEMENT, LLC 0.19% of their portfolio | 88.0k $6.1m | Added +8.4k |
| Wilmington Savings Fund Society, FSB 0.13% of their portfolio | 85.3k $5.9m | Reduced -1.4k |
| KING LUTHER CAPITAL MANAGEMENT CORP 0.02% of their portfolio | 83.2k $5.8m | Added +15.8k |
| SEIZERT CAPITAL PARTNERS, LLC 0.23% of their portfolio | 79.5k $5.5m | Added +52.7k |
| NEW YORK STATE TEACHERS RETIREMENT SYSTEM 0.01% of their portfolio | 78.4k $5.4m | Added +7.6k |
| Peak Retirement Planning, Inc. 0.81% of their portfolio | 74.0k $5.1m | Added +28.9k |
| BARCLAYS PLC 0.00% of their portfolio | 71.9k $5.0m | Added +10.6k |
| ALLIANCEBERNSTEIN L.P. 0.00% of their portfolio | 70.9k $4.9m | Added +6.9k |
| Thrive Capital Management, LLC 0.91% of their portfolio | 69.3k $4.8m | Added +21.1k |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM 0.00% of their portfolio | 67.5k $4.7m | Reduced -2.0k |