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NUWE · NASDAQ · Medical - Devices

Nuwellis (NUWE)

Hospital ultrafiltration systems and disposable treatments for fluid overload.

$0.8367
vs last close+0.01 (+1.25%)

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13F · 13D/G · Form 4

Institutions0.23%8.3K shares
8 holders · as of Mar 31, 2026
Insiders0.02%748 shares
1 holder · as of Jun 11, 2025
Other99.75%3.64M shares
remainder

3.65M company shares as of Sep 23, 2026 · institutions as of Mar 31, 2026 · holders as of their latest filing

Two share counts disagree (3.65M in the company's Sep 23, 2026 report, 92.2K elsewhere); stakes use the report.

13F · 13D/G · Form 4

HolderStakeSharesDate
Armistice Capital, LLCInstitution
0.19%236,200as of Mar 31, 2026
Geode Capital Management, LLCInstitution
0.03%44,176as of Mar 31, 2026
John L. ErbInsiderdirector, 10 percent owner, officer: CEO and President
0.02%748filed Jun 11, 2025
Tower Research Capital LLC (TRC)Institution
0.00%5,189as of Mar 31, 2026
Citigroup IncInstitution
0.00%5,126as of Mar 31, 2026
Sbi Securities Co., Ltd.Institution
0.00%63as of Mar 31, 2026
UBS Group AGInstitution
0.00%46as of Mar 31, 2026
Caitong International Asset Management Co., LtdInstitution
0.00%4as of Mar 31, 2026
Ankerstar Wealth, LLCInstitution
0.00%1as of Mar 31, 2026
Altium Growth GP, LLCStrategic
—0.30% of class, as filed—filed Feb 16, 2021
Bigger Capital Fund L PStrategic
—9.99% of class, as filed—filed Nov 14, 2019
Chiang Li FamilyInsider
—13.10% of class, as filed—filed Dec 8, 2017
Ki Yong ChoiInsider10 percent owner
—6.10% of class, as filed—filed Mar 10, 2017
Empery Asset Management, LPInstitution
—9.99% of class, as filed—filed Feb 3, 2020
Heights Capital Management, Inc.Strategic
—8.70% of class, as filed—filed Aug 25, 2020
Hudson Bay Capital Management LPInstitution
—9.99% of class, as filed—filed Feb 5, 2020
Intracoastal Capital LLCStrategic
—4.99% of class, as filed—filed Aug 30, 2024
Lind Global Fund II LPInstitution
—8.10% of class, as filed—filed Oct 20, 2022
Lind Global Fund III LPInstitution
—6.20% of class, as filed—filed Aug 5, 2026
Management LPStrategic
—4.90% of class, as filed—filed Feb 14, 2020
Sabby Management, LLCStrategic
—5.40% of class, as filed—filed Jan 20, 2026
Nestor Jr. Jaramillo1Insiderdirector, officer: President and CEO
0.00%0filed Mar 16, 2023
Lynn Larson Blake2Insiderofficer: Chief Financial Officer
0.00%0filed Oct 28, 2022
Gregory D. Waller3Insiderdirector
0.00%0filed Aug 13, 2018
Maria Rosa Costanzo4Insiderdirector
0.00%0filed Sep 13, 2019
  1. Last filed Mar 16, 2023; leaving the company requires no filing. Not in the bar.
  2. Last filed Oct 28, 2022; leaving the company requires no filing. Not in the bar.
  3. Last filed Aug 13, 2018; leaving the company requires no filing. Not in the bar.
  4. Last filed Sep 13, 2019; leaving the company requires no filing. Not in the bar.

13F, as of Mar 31, 2026

8 holders · 290.8K shares · 2 new positions · 5 increased · 1 reduced · 4 closed

HolderShares% outstandingChg q/qFiled
Armistice Capital, LLC236.2K6.48%+236.2KnewMay 15, 2026
Geode Capital Management, LLC44.2K1.21%+33.8KMay 15, 2026
Tower Research Capital LLC (TRC)5.2K0.14%+3.2KMay 15, 2026
Citigroup Inc5.1K0.14%+5.1KMay 11, 2026
Sbi Securities Co., Ltd.630.00%0Apr 28, 2026
UBS Group AG460.00%−532May 5, 2026
Caitong International Asset Management Co., Ltd40.00%+4newMay 11, 2026
Ankerstar Wealth, LLC10.00%0May 14, 2026

13D/G · 5% or more, as filed

Holder% of classSharesFormFiled
Erb John L7.30%13DJun 16, 2025
Armistice Capital, LLC7.11%13GMay 15, 2026
Lind Global Fund III LP6.20%13GAug 5, 2026
Sabby Management, LLC5.40%13GJan 20, 2026

Form 4

Latest trades

No open-market trades in the last 12 months.

House and Senate disclosures

Not reported.