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TLSI · NASDAQ · Medical - Devices

TriSalus Life Sciences (TLSI)

Sells PEDD infusion systems while developing nelitolimod for liver and pancreatic tumors.

$5.14

At close−0.03 (−0.58%)

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Breakdown13F · 13D/G · Form 4

Institutions85 holders · as of Mar 31, 2026	33.87%	20.86M shares
Insiders19 holders · as of Jul 6, 2026	28.82%	17.75M shares
Strategic holders2 holders · as of May 12, 2026	17.04%	10.49M shares
Otherremainder	20.27%	12.48M shares

61.57M company shares as of Sep 3, 2026 · institutions as of Mar 31, 2026 · holders as of their latest filing

Top shareholders13F · 13D/G · Form 4

Holder	Stake	Shares	Evidence
Frankenius Equity ABStrategic10 percent owner	11.35%	6.99M	Form 4filed Apr 20, 2026 ↗
David J. Matlin¹Insiderdirector	10.15%	6.25M	Form 4filed May 15, 2026 ↗
First Light Asset Management, LLCInstitution	8.23%	5.07M	13Fas of Mar 31, 2026
Utmost Group PLCStrategic	5.69%	3.50M	13Gfiled May 12, 2026 ↗
James J. PallottaInsider	5.18%	3.19M	13Gfiled May 20, 2026 ↗
Mats Wahlstrom²Insiderdirector	5.07%	2.99M	13Dfiled May 18, 2026 ↗
Awm Investment Company, Inc.Institution	3.38%	2.08M	13Fas of Mar 31, 2026
Nantahala Capital Management, LLCInstitution	3.36%	2.07M	13Fas of Mar 31, 2026
Michael P. StanskyInsiderdirector	2.66%	1.64M	Form 4filed May 18, 2026 ↗
BlackRock, Inc.Institution	2.44%	1.50M	13Fas of Mar 31, 2026
Wasatch Advisors LPInstitution	2.34%	1.44M	13Fas of Mar 31, 2026
Vanguard Capital Management LLCInstitution	2.19%	1.35M	13Fas of Mar 31, 2026
Mary T. SzelaInsiderdirector, officer: CEO and President	1.75%	1.08M	Form 4filed Jul 1, 2026 ↗
Gilder Gagnon Howe & Co LLCInstitution	1.44%	888,515	13Fas of Mar 31, 2026
Cerity Partners LLCInstitution	1.28%	787,272	13Fas of Mar 31, 2026
Geode Capital Management, LLCInstitution	1.26%	777,094	13Fas of Mar 31, 2026
Thompson Siegel & Walmsley LLCInstitution	0.95%	583,574	13Fas of Mar 31, 2026
Kerry R. HicksInsiderdirector	0.88%	542,790	Form 4filed May 15, 2026 ↗
Kennedy Capital Management LLCInstitution	0.79%	485,242	13Fas of Mar 31, 2026
Morgan StanleyInstitution	0.64%	393,909	13Fas of Mar 31, 2026
State Street CorpInstitution	0.53%	328,020	13Fas of Mar 31, 2026
Sean MurphyInsiderdirector	0.52%	321,721	Form 4filed May 21, 2025 ↗
Empire Financial Management Company, LLCInstitution	0.49%	300,275	13Fas of Mar 31, 2026
David PatienceInsiderofficer: Chief Financial Officer	0.42%	261,107	Form 4filed Jul 6, 2026 ↗
George Kelly MartinInsiderdirector	0.40%	247,176	Form 4filed Sep 10, 2024 ↗

David J. Matlin reports a block also reported by Vanguard Capital Management LLC; it is counted once, under Vanguard Capital Management LLC.
Mats Wahlstrom's transaction reports restate only vehicles that traded; the 2025 ownership statement (2.99M) plus the 131.8K net shares acquired since is used instead.

13F — a manager's quarterly holdings · 13D/13G — an ownership statement filed at 5% or more · Form 4 — an insider's transaction report

Institutions13F, as of Mar 31, 2026

85 holders · 20.86M shares · 33 new positions · 56 increased · 14 reduced · 12 closed

Holder	Shares	% outstanding	Chg q/q	Filed
First Light Asset Management, LLC	5.07M	8.23%	+5.07Mnew	May 15, 2026
Awm Investment Company, Inc.	2.08M	3.38%	+835.3K	May 15, 2026
Nantahala Capital Management, LLC	2.07M	3.36%	0	May 15, 2026
BlackRock, Inc.	1.50M	2.44%	−34.8K	May 13, 2026
Wasatch Advisors LP	1.44M	2.34%	+1.44Mnew	Apr 21, 2026
Vanguard Capital Management LLC	1.35M	2.19%	+1.35Mnew	May 15, 2026
Gilder Gagnon Howe & Co LLC	888.5K	1.44%	−90.5K	May 15, 2026
Cerity Partners LLC	787.3K	1.28%	+787.3Knew	May 15, 2026

Ownership statements13D/G · 5% or more, as filed

Holder	% of class	Shares	Form	Filed
Frankenius Equity ABincl. Paul Frankenius	14.00%	6.99M	13D	Aug 4, 2025 ↗
First Light Asset Management, LLC	8.75%	5.37M	13G	May 15, 2026 ↗
Lombard International Assurance S.A.	6.74%	1.98M	13G	Oct 21, 2024 ↗
Mats Wahlstromincl. HW Investment Partners, LLC, Kerry R. Hicks	6.00%	2.99M	13D	Aug 1, 2025 ↗
Utmost Group PLC	5.71%	3.50M	13G	May 12, 2026 ↗
James J. Pallotta	5.20%	3.19M	13G	May 20, 2026 ↗

Insider tradesForm 4

Latest trades

Date	Insider	Type	Shares	Avg price	Owned after
May 15, 2026	Richard Marshakofficer: Chief Commercial Officer	Sale	543	$2.67	125,101
May 15, 2026	Gary B. Gordondirector	Purchase	10,000	$2.46	72,510
May 15, 2026	David Patienceofficer: Chief Financial Officer	Purchase	7,100	$2.43	275,757
May 15, 2026	Mary T. Szeladirector, officer: CEO and President	Purchase	39,682	$2.59	1,065,215
May 15, 2026	Michael P. Stanskydirector	Purchase · 2 lots	610,000	$2.50	1,640,420
May 15, 2026	Mats Wahlstromdirector	Purchase	60,000	$2.53	147,555
Mar 17, 2026	Mary T. Szeladirector, officer: CEO and President	Sale	15,944	$3.85	752,987
Mar 11, 2026	Mary T. Szeladirector, officer: CEO and President	Sale	4,358	$4.13	768,931
Mar 16, 2026	Jennifer Stevensofficer: Chief Regulatory Officer	Sale	774	$4.12	124,110
Mar 12, 2026	Jennifer Stevensofficer: Chief Regulatory Officer	Sale	1,552	$4.09	124,884

CongressHouse and Senate disclosures

Not reported.