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SNWV · NASDAQ · Medical - Devices

SANUWAVE (SNWV)

Builds non-contact ultrasound systems and applicators for wound care.

$4.44

At close−0.16 (−3.48%)

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Breakdown13F · 13D/G · Form 4

Institutions63 holders · as of Mar 31, 2026	48.36%	4.16M shares
Insiders6 holders · as of Jun 12, 2025	4.79%	412.3K shares
Strategic holders1 holder · as of Dec 15, 2025	0.77%	66.0K shares
Otherremainder	46.08%	3.96M shares

8.60M 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
Opaleye Management Inc.Institution	11.41%	981,267	13Fas of Mar 31, 2026
BlackRock, Inc.Institution	5.60%	481,540	13Fas of Mar 31, 2026
Awm Investment Company, Inc.Institution	5.28%	454,550	13Fas of Mar 31, 2026
Anthony Michael StolarskiInsiderdirector	4.09%	351,786	Form 4filed Jun 12, 2025 ↗
Praetorian PR LLCInstitution	4.07%	350,000	13Fas of Mar 31, 2026
Vanguard Capital Management LLCInstitution	4.06%	348,874	13Fas of Mar 31, 2026
Solas Capital Management, LLCInstitution	3.34%	287,514	13Fas of Mar 31, 2026
Stifel Financial CorpInstitution	2.93%	251,633	13Fas of Mar 31, 2026
UBS Group AGInstitution	2.44%	210,263	13Fas of Mar 31, 2026
Geode Capital Management, LLCInstitution	2.00%	171,798	13Fas of Mar 31, 2026
State Street CorpInstitution	1.63%	140,089	13Fas of Mar 31, 2026
Manchester Management Co LLCStrategicother: Director by Deputization	0.77%	65,999	Form 4filed Dec 15, 2025 ↗
Northern Trust CorpInstitution	0.73%	62,791	13Fas of Mar 31, 2026
Ian D. MillerInsiderdirector	0.57%	49,316	Form 4filed Mar 24, 2025 ↗
Vanguard Fiduciary Trust CoInstitution	0.57%	49,281	13Fas of Mar 31, 2026
Vanguard Portfolio Management LLCInstitution	0.52%	44,328	13Fas of Mar 31, 2026
Bridgeway Capital Management, LLCInstitution	0.47%	40,779	13Fas of Mar 31, 2026
Goldman Sachs Group IncInstitution	0.45%	38,505	13Fas of Mar 31, 2026
Stonebridge Wealth Management, LLCInstitution	0.43%	37,184	13Fas of Mar 31, 2026
Bank of America Corp /DE/Institution	0.30%	25,503	13Fas of Mar 31, 2026
Millennium Management LLCInstitution	0.29%	24,669	13Fas of Mar 31, 2026
Charles Schwab Investment Management IncInstitution	0.25%	21,935	13Fas of Mar 31, 2026
Citadel Advisors LLCInstitution	0.21%	18,098	13Fas of Mar 31, 2026
Bank of New York Mellon CorpInstitution	0.18%	15,817	13Fas of Mar 31, 2026
XTX Topco LtdInstitution	0.17%	14,681	13Fas of Mar 31, 2026

13F — a manager's quarterly holdings · Form 4 — an insider's transaction report

Institutions13F, as of Mar 31, 2026

63 holders · 4.16M shares · 16 new positions · 36 increased · 13 reduced · 12 closed

Holder	Shares	% outstanding	Chg q/q	Filed
Opaleye Management Inc.	981.3K	11.41%	0	May 15, 2026
BlackRock, Inc.	481.5K	5.60%	−9.0K	May 13, 2026
Awm Investment Company, Inc.	454.6K	5.28%	0	May 15, 2026
Praetorian PR LLC	350.0K	4.07%	+85.0K	May 15, 2026
Vanguard Capital Management LLC	348.9K	4.06%	+348.9Knew	May 15, 2026
Solas Capital Management, LLC	287.5K	3.34%	−6.0K	May 15, 2026
Stifel Financial Corp	251.6K	2.93%	+74.3K	May 12, 2026
UBS Group AG	210.3K	2.44%	+191.6K	May 5, 2026

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

Holder	% of class	Shares	Form	Filed
Manchester Management Co LLCincl. Manchester Explorer, L.P., Morgan C. Frank +2 more	11.10%	948.0K	13D	Dec 10, 2025 ↗
James E. Besserincl. Morgan C. Frank, Manchester Management Company, LLC +2 more	10.80%	930.0K	13D	Dec 15, 2025 ↗
Opaleye Management Inc.	9.99%	858.6K	13G	May 4, 2026 ↗
AWM Investment Company, Inc.	6.00%	513.2K	13G	May 9, 2025 ↗
BlackRock, Inc.	5.60%	476.2K	13G	Oct 17, 2025 ↗

Insider tradesForm 4

Latest trades

Date	Insider	Type	Shares	Avg price	Owned after
May 1, 2026	Opaleye Management Inc.10 percent owner	Sale · 2 lots	10,581	$16.11	5,000
Apr 30, 2026	Opaleye Management Inc.10 percent owner	Sale · 2 lots	25,000	$16.15	5,500
Apr 29, 2026	Opaleye Management Inc.10 percent owner	Sale · 2 lots	24,360	$17.25	6,500
Apr 28, 2026	Opaleye Management Inc.10 percent owner	Sale · 2 lots	46,288	$18.47	7,500
Apr 17, 2026	Opaleye Management Inc.10 percent owner	Sale · 2 lots	16,267	$20.46	10,000
Apr 21, 2026	Opaleye Management Inc.10 percent owner	Sale	202	$20.50	954,798
Dec 12, 2025	Manchester Management Co LLCother: Director by Deputization	Sale	6,500	$21.04	63,999
Dec 11, 2025	Manchester Management Co LLCother: Director by Deputization	Sale	13,500	$31.28	70,499
Dec 8, 2025	Manchester Management Co LLCother: Director by Deputization	Sale · 2 lots	127,400	$30.76	883,390
Dec 10, 2025	Manchester Management Co LLCother: Director by Deputization	Sale	8,625	$30.39	863,980

CongressHouse and Senate disclosures

Not reported.