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Merit Medical Systems, Inc. (MMSI) institutional ownership

Latest close $71.06 Jul 8, 2026
Market cap$4.8B 52-week range SectorHealthcare
Funds holding · Q1 2026
398
reported MMSI position changes
Top owners · Q1 2026
No disclosed owners are available.
Institutional activity · Q1 2026
Net sold $170M
223 buyers · 175 sellers

Merit Medical Systems, Inc. (MMSI) price and institutional activity

Dates

Q1 2026

$485M bought by 223 investors
Massachusetts Financial Services Co$35MMarshall Wace, LLP$33M +221 more
$655M sold by 175 investors
Wellington Management Group LLP-$80MNorges-$67M +173 more
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Bought Sold Totals per quarter; hover a bar for the names.

Merit Medical Systems, Inc. (MMSI) institutional activity · 398

Investor Type Est. change Change Δ Own Date
Wellington Management Group LLP · Reduced −$80M
Change −1.0M Δ Own −77.1% Date Q1 2026
Wellington Management Group LLP Reduced· Q1 2026 −$80M −1.0M −77.1% Q1 2026
Norges · Exited −$67M
Change −862K Δ Own −100.0% Date Q1 2026
Norges Exited· Q1 2026 −$67M −862K −100.0% Q1 2026
FMR LLC · Reduced −$60M
Change −767K Δ Own −43.3% Date Q1 2026
FMR LLC Reduced· Q1 2026 −$60M −767K −43.3% Q1 2026
Thrivent Financial for Lutherans · Reduced −$53M
Change −684K Date Q1 2026
Thrivent Financial for Lutherans Reduced· Q1 2026 −$53M −684K Q1 2026
Voya Investment Management LLC · Reduced −$35M
Change −453K Date Q1 2026
Voya Investment Management LLC Reduced· Q1 2026 −$35M −453K Q1 2026
Massachusetts Financial Services Co · New +$35M
Change +447K Date Q1 2026
Massachusetts Financial Services Co New· Q1 2026 +$35M +447K Q1 2026
Marshall Wace, LLP · Added +$33M
Change +428K Date Q1 2026
Marshall Wace, LLP Added· Q1 2026 +$33M +428K Q1 2026
Walleye Capital LLC · Reduced −$32M
Change −409K Date Q1 2026
Walleye Capital LLC Reduced· Q1 2026 −$32M −409K Q1 2026
Freestone Grove Partners LP · Added +$25M
Change +318K Date Q1 2026
Freestone Grove Partners LP Added· Q1 2026 +$25M +318K Q1 2026
Fifth Third Bancorp · Added +$24M
Change +312K Date Q1 2026
Fifth Third Bancorp Added· Q1 2026 +$24M +312K Q1 2026
Invesco Ltd. · Reduced −$24M
Change −310K Δ Own −63.0% Date Q1 2026
Invesco Ltd. Reduced· Q1 2026 −$24M −310K −63.0% Q1 2026
Two Sigma Advisers, LP · Exited −$24M
Change −310K Δ Own −100.0% Date Q1 2026
Two Sigma Advisers, LP Exited· Q1 2026 −$24M −310K −100.0% Q1 2026
Point72 Asset Management, L.P. · Added +$24M
Change +305K Δ Own +70.0% Date Q1 2026
Point72 Asset Management, L.P. Added· Q1 2026 +$24M +305K +70.0% Q1 2026
Goldman Sachs Group Inc · Reduced −$23M
Change −300K Date Q1 2026
Goldman Sachs Group Inc Reduced· Q1 2026 −$23M −300K Q1 2026
Boston Trust Walden Corp · New +$22M
Change +277K Date Q1 2026
Boston Trust Walden Corp New· Q1 2026 +$22M +277K Q1 2026
Data through Q1 2026 · filed Jun 2, 2026
15 of 398

Famous investor activity in Merit Medical Systems, Inc. (MMSI)

Merit Medical Systems, Inc. (MMSI) insider trading

Company insiders, action and economics first; trade and filed dates last.
Dates
Insider Title Type Price Qty Value Owned ΔOwn Trade date Filed date
Voigt Michel J. · Officer Gift (G) -65
Owned 46K Trade date Jun 15, 2026 Filed date Jun 17, 2026
Voigt Michel J. Officer Gift (G) -65 46K Jun 15, 2026 Jun 17, 2026
Lloyd Brian G. · Officer Gift (G) -2K
Owned 60K Trade date Jun 5, 2026 Filed date Jun 8, 2026
Lloyd Brian G. Officer Gift (G) -2K 60K Jun 5, 2026 Jun 8, 2026
Gunderson Thomas J. · Director 4 operations 0
Price $52.17 Owned 0 Trade date May 20, 2026 Filed date May 21, 2026
Gunderson Thomas J. Director 4 operations $52.17 0 0 May 20, 2026 May 21, 2026
Ward Lynne N. · Director Grant (A) 3K
Owned 11K Trade date May 18, 2026 Filed date May 19, 2026
Ward Lynne N. Director Grant (A) 3K 11K May 18, 2026 May 19, 2026
Ward Scott R. · Director Grant (A) 3K
Owned 3K Trade date May 18, 2026 Filed date May 19, 2026
Ward Scott R. Director Grant (A) 3K 3K May 18, 2026 May 19, 2026
Gunderson Thomas J. · Director Grant (A) 3K
Owned 39K Trade date May 18, 2026 Filed date May 19, 2026
Gunderson Thomas J. Director Grant (A) 3K 39K May 18, 2026 May 19, 2026
Evans Stephen C. · Director Grant (A) 3K
Owned 10K Trade date May 18, 2026 Filed date May 19, 2026
Evans Stephen C. Director Grant (A) 3K 10K May 18, 2026 May 19, 2026
Kaiser Laura S. · Director Grant (A) 3K
Owned 13K Trade date May 18, 2026 Filed date May 19, 2026
Kaiser Laura S. Director Grant (A) 3K 13K May 18, 2026 May 19, 2026
Perez Silvia M. · Director Grant (A) 3K
Owned 8K Trade date May 18, 2026 Filed date May 19, 2026
Perez Silvia M. Director Grant (A) 3K 8K May 18, 2026 May 19, 2026
Carpenter Lonny J. · Director Grant (A) 3K
Owned 21K Trade date May 18, 2026 Filed date May 19, 2026
Carpenter Lonny J. Director Grant (A) 3K 21K May 18, 2026 May 19, 2026
McDonnell Michael R. · Director Grant (A) 3K
Owned 10K Trade date May 18, 2026 Filed date May 19, 2026
McDonnell Michael R. Director Grant (A) 3K 10K May 18, 2026 May 19, 2026
Millner F. Ann Ed.d. · Director Grant (A) 3K
Owned 38K Trade date May 18, 2026 Filed date May 19, 2026
Millner F. Ann Ed.d. Director Grant (A) 3K 38K May 18, 2026 May 19, 2026
Smith Christian Adam · Officer Buy +$99K
Price $61.00 Qty +2K Owned 2K Trade date May 11, 2026 Filed date May 13, 2026
Smith Christian Adam Officer Buy $61.00 +2K +$99K 2K May 11, 2026 May 13, 2026
Ward Lynne N. · Director Sell −$313K
Price $62.61 Qty −5K Owned 8K Trade date May 7, 2026 Filed date May 11, 2026
Ward Lynne N. Director Sell $62.61 −5K −$313K 8K May 7, 2026 May 11, 2026
Lloyd Brian G. · Officer Buy +$125K
Price $62.62 Qty +2K Owned 2K Trade date May 7, 2026 Filed date May 11, 2026
Lloyd Brian G. Officer Buy $62.62 +2K +$125K 2K May 7, 2026 May 11, 2026
15 of 42
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Merit Medical Systems, Inc. (MMSI) activist and large shareholders

What are Schedules 13D and 13G?

Dates
Owner/Filer identity Shares reported % of shares outstanding Filing date
BlackRock Inc. 10.1M
% of shares outstanding 17.4% Filing date Jan 22, 2024
BlackRock Inc. 10.1M 17.4% Jan 22, 2024
Blackrock, Inc. 9.0M
% of shares outstanding 15.4% Filing date Nov 8, 2024
Blackrock, Inc. 9.0M 15.4% Nov 8, 2024
Vanguard Group Inc 6.9M
% of shares outstanding 11.9% Filing date Feb 13, 2024
Vanguard Group Inc 6.9M 11.9% Feb 13, 2024
Vanguard Portfolio Management 3.6M
% of shares outstanding 6.0% Filing date Apr 29, 2026
Vanguard Portfolio Management 3.6M 6.0% Apr 29, 2026
Vanguard Capital Management 3.1M
% of shares outstanding 5.2% Filing date Apr 30, 2026
Vanguard Capital Management 3.1M 5.2% Apr 30, 2026
Starboard Value LP 2.7M
% of shares outstanding 4.8% Filing date Oct 18, 2021
Starboard Value LP 2.7M 4.8% Oct 18, 2021
Arrowmark Colorado Holdings LLC 2.5M
% of shares outstanding 4.4% Filing date Feb 15, 2023
Arrowmark Colorado Holdings LLC 2.5M 4.4% Feb 15, 2023
William Blair Investment Management, LLC 1.4M
% of shares outstanding 2.5% Filing date Nov 14, 2024
William Blair Investment Management, LLC 1.4M 2.5% Nov 14, 2024
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Merit Medical Systems, Inc. (MMSI) ownership FAQ

Who owns MMSI?

398 reporting institutions disclosed MMSI position changes in the Q1 2026 snapshot.

How is institutional activity calculated?

For each manager, WhoBought compares accepted consecutive 13F share counts. Share change is current shares minus prior shares. Estimated dollar change is that signed share change multiplied by the split-adjusted quarter-mean close. The activity table on this page uses Q1 2026.

What are activist and large shareholder filings?

An investor crossing 5% of a share class generally files Schedule 13D for activist intent or Schedule 13G for a passive position. The technical form names appear here rather than in the activity rows.

Where does this data come from?

Ownership and institutional activity come from SEC Form 13F filings. Insider activity comes from SEC Form 4, and large-shareholder activity from SEC Schedules 13D and 13G. FMP supplies price data only. Company logos use the local verified Parqet cache with one shared fallback.

Why are ownership reports delayed?

Form 13F is a quarterly disclosure and is normally filed after the quarter ends. Every ownership and activity value therefore names its represented period; it is not presented as a live position.

How are missing table values shown?

A muted dash marks a missing table value. It means the filing omitted the value, comparable data is unavailable, or no prior position exists for comparison.