Institutional HoldersBeta

Who holds a company, from every 13F filed for the quarter, one row per filer exactly as filed, against the latest share count the company reported.

NEPHROS INC

CIK 0001196298NEPH· quarter ending 2026-06-30

Shares outstanding

10,860,120

as of 2026-08-07 · 10-Q cover page, filed 2026-08-10

Held by 13F filers

5,313,140

48.9% of shares outstanding

Holders

+6 vs 2026-03-31 · 7 new, 1 exited

Value

$19.0M

shares -1.1% vs prior quarter

Share classes (cover page of the 10-Q filed 2026-08-10, as of 2026-08-07)

Class	Listed	Shares outstanding	Held by 13F filers	% of class	Holders	CUSIP
Common stock	NEPH · NASDAQ	10,860,120	5,313,140	48.9%	33	640671400

Each class is compared with its own share count; classes are not added together. A class that is not exchange-listed cannot be held by 13F filers.

Securities (CUSIPs held in 13F this quarter)

tick to combine

Count	CUSIP	Class (as filers write it)	Holders	Shares held	Class shares	% of class	Value	Options	Mapped via
	640671400	COM	33	5,313,140	10,860,120	48.9%	$19.0M	—	13DG	holders →

Totals combine the ticked CUSIPs and update as you tick: common-stock classes by default; preferreds, notes, warrants and depositary shares are listed but not counted. "holders →" shows a single CUSIP on its own. Bonds are held as a principal amount, not shares. Options positions are never counted as holdings.

Top holders (33 of 33 · 640671400)

change vs 2026-03-31

#	Filer	Shares	% of class	Value	Change
1	WEXFORD CAPITAL LP	3,600,552	33.15%	$12.9M	—
2	Topline Capital Management, LLC	535,698	4.93%	$1.9M	-46,269 (-8.0%)
3	VANGUARD CAPITAL MANAGEMENT LLC	198,643	1.83%	$709K	—
4	MORGAN STANLEY	128,915	1.19%	$460K	+18,000 (+16.2%)
5	Cornerstone Capital, Inc.	128,700	1.19%	$459K	—
6	BARD ASSOCIATES INC	118,003	1.09%	$421K	-3,199 (-2.6%)
7	RENAISSANCE TECHNOLOGIES LLC	77,504	0.71%	$277K	-21,896 (-22.0%)
8	GEODE CAPITAL MANAGEMENT, LLC	70,263	0.65%	$251K	-2,662 (-3.7%)
9	Mesirow Financial Investment Management, Inc.	60,000	0.55%	$214K	-60,000 (-50.0%)
10	HighTower Advisors, LLC	59,710	0.55%	$213K	—
11	NAVELLIER & ASSOCIATES INC	53,479	0.49%	$191K	+34,353 (+179.6%)
12	ESSEX INVESTMENT MANAGEMENT CO LLC	38,927	0.36%	$139K	-57 (-0.1%)
13	VANGUARD FIDUCIARY TRUST CO	36,901	0.34%	$132K	—
14	BLAIR WILLIAM & CO/IL	36,249	0.33%	$129K	—
15	CITADEL ADVISORS LLC	29,044	0.27%	$104K	+8,156 (+39.0%)
16	DIMENSIONAL FUND ADVISORS LP	22,164	0.20%	$79K	+1,419 (+6.8%)
17	BlackRock, Inc.	18,822	0.17%	$67K	NEW
18	De Lisle Partners LLP	17,400	0.16%	$62K	-7,600 (-30.4%)
19	NORTHERN TRUST CORP	16,706	0.15%	$60K	+5,878 (+54.3%)
20	STATE STREET CORP	15,698	0.14%	$56K	—
21	GOLDMAN SACHS GROUP INC	12,836	0.12%	$46K	-1,327 (-9.4%)
22	MERCER GLOBAL ADVISORS INC /ADV	12,500	0.12%	$45K	NEW
23	ELKHORN PARTNERS LIMITED PARTNERSHIP	11,000	0.10%	$39K	-1,000 (-8.3%)
24	Cannell & Spears LLC	11,000	0.10%	$39K	—
25	UBS Group AG	831	0.01%	$3K	NEW
26	ROYAL BANK OF CANADA	827	0.01%	$3K	+80 (+10.7%)
27	JONES FINANCIAL COMPANIES LLLP	227	0.00%	$819	+196 (+632.3%)
28	OSAIC HOLDINGS, INC.	175	0.00%	$624	—
29	SBI Securities Co., Ltd.	150	0.00%	$536	NEW
30	NORTHWESTERN MUTUAL WEALTH MANAGEMENT CO	133	0.00%	$475	NEW
31	HARBOUR INVESTMENTS, INC.	50	0.00%	$179	—
32	BARCLAYS PLC	27	0.00%	$96	NEW
33	FMR LLC	6	0.00%	$22	NEW

Exited since 2026-03-31 (1 filers; largest 1 shown)

PRELUDE CAPITAL MANAGEMENT, LLC

−13,680

Large holders from 13D/13G (latest per reporting person, last 2 years)

Filed when a holder crosses 5% or changes materially, so often more current than the quarter-end 13F. Percentages are the filer's own, against the share count they used.

Reporting person	Form	Filed	Event	Shares	% of class
CD Holding Company, LLC	SCHEDULE 13G	2026-09-16	2026-09-14	616,945	5.68%
Charles E. Davidson	SCHEDULE 13D/A	2026-09-16	2026-09-14	223,539	2.06%
Joseph M. Jacobs	SCHEDULE 13D/A	2026-09-16	2026-09-14	223,539	2.06%
Wexford Capital LP	SCHEDULE 13D/A	2026-09-16	2026-09-14	223,539	2.06%
Wexford GP LLC	SCHEDULE 13D/A	2026-09-16	2026-09-14	223,539	2.06%
Collin McBirney	SCHEDULE 13G	2025-11-14	2025-08-04	595,334	5.6%
Topline Capital Management, LLC	SCHEDULE 13G	2025-11-14	2025-08-04	595,334	5.6%
Topline Capital Partners, LP	SCHEDULE 13G	2025-11-14	2025-08-04	595,334	5.6%

Source: SEC Form 13F-HR information tables for the quarter ending 2026-06-30 (filed within 45 days of quarter end; amendments applied; values normalised to dollars), the share count from the company's latest 10-K/10-Q XBRL cover page, and Schedule 13D/13G filings. Each row is a legal 13F filer as filed — related entities (e.g. Vanguard's advisers) are not merged. Retail brokerage accounts are not reported on 13F, so the remainder is mostly retail and insiders.