NEPH · Nephros Inc · Shareholders & Ownership

$2.79 -0.30 (-9.71%) At close · Nov 6 Play latest call Q2 2026 earnings call transcript

Market Cap

$32.61M

10.87M

Volume · Nov 6 104.03K Avg daily vol (3M) 39.66K

Every disclosed holder of NEPH in one list: 13F institutions, Schedule 13D and 13G filers, insiders (Forms 3, 4 and 5) and registered funds, each from its own latest filing. Holders nest by CIK and SEC reporting links, never by name, and each is summed once.

How the holder list picks a filing →

Who Owns NEPH

13F quarter Sep 30, 2026, combined view: filers that have not filed yet carry their Jun 30, 2026 positions

Holder group	Holders	Shares	% Out	Summed
Institutional (13F)	34	5,313,141	48.88%	Yes
Insiders (Forms 3, 4, 5)	7	633,855	5.83%	Yes
13D/G-only blocks	0	0	0.00%	Yes
Remaining	—	4,923,008	45.29%	Rest
Registered funds (N-PORT, not summed)	16	293,616	2.70%	No

Shares outstanding: 10,870,004, the issuer's latest cover-page count restated onto today's split basis.

13D/G-only counts each filer's latest 13D or 13G that no 13F report of the listing contains, that names no 13F filer and that no counted insider files. Funds are never summed: their shares sit inside their advisers' 13F reports.

Holders of NEPH

One row per holder Every filing By ultimate parent

All 13F Funds Insiders 13D/G Non-US

#	Holder	Shares	% Out	Change	As of	Notes
1	Charles E. Davidson 13G CIK 1001391 · Unknown · Sep 14, 2026 Rule 13d-1(c), passive investor, not summed	616,945	5.68%	—	Sep 14, 2026	Rule 13d-1(c), passive investor, not summed
2	Topline Capital Management, LLC 13F CIK 1792549 · Investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	535,698	4.93%	-46,269	Jun 30, 2026	carried, not yet filed for the newest quarter
3	WEXFORD CAPITAL LP 13D CIK 1048462 · Registered investment adviser · Sep 14, 2026 Item 4 purpose: Other not summed	223,539	2.06%	—	Sep 14, 2026	not summed
3.1	WEXFORD CAPITAL LP 13F CIK 1048462 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	3,600,552	33.12%	0	Jun 30, 2026	carried, not yet filed for the newest quarter
3.2	WEXFORD CAPITAL LP Insider CIK 1048462 · Sep 14, 2026 10% Owner, issuer-wide, not summed	166,667	1.53%	+109,795	Sep 14, 2026	10% Owner, issuer-wide, not summed
4	VANGUARD CAPITAL MANAGEMENT LLC 13F CIK 2100119 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	198,643	1.83%	0	Jun 30, 2026	carried, not yet filed for the newest quarter
5	Banks Robert R. Jr. Insider CIK 1977237 · Mar 23, 2026 President and CEO, issuer-wide	190,000	1.75%	+120,000	Mar 23, 2026	President and CEO, issuer-wide
6	Amron Arthur H Insider CIK 1179697 · Sep 14, 2026 Director, issuer-wide	184,169	1.69%	+43,295	Sep 14, 2026	Director, issuer-wide
7	VANGUARD TOTAL STOCK MARKET INDEX FUND Fund S000002848 · Registered fund · Jun 30, 2026 VANGUARD INDEX FUNDS, not summed	130,901	1.20%	0	Jun 30, 2026	VANGUARD INDEX FUNDS, not summed
8	MORGAN STANLEY 13F CIK 895421 · Holding company · Jun 30, 2026 carried, not yet filed for the newest quarter	128,915	1.19%	+18,000	Jun 30, 2026	carried, not yet filed for the newest quarter
9	Cornerstone Capital, Inc. 13F CIK 819535 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	128,700	1.18%	0	Jun 30, 2026	carried, not yet filed for the newest quarter
10	Spandow Oliver J. Insider CIK 1749836 · Nov 10, 2025 Director, issuer-wide	122,881	1.13%	+8,036	Nov 10, 2025	Director, issuer-wide
11	BARD ASSOCIATES INC 13F CIK 1105907 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	118,003	1.09%	-3,199	Jun 30, 2026	carried, not yet filed for the newest quarter
12	RENAISSANCE TECHNOLOGIES LLC 13F CIK 1037389 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	77,504	0.71%	-21,896	Jun 30, 2026	carried, not yet filed for the newest quarter
13	GEODE CAPITAL MANAGEMENT, LLC 13F CIK 1214717 · Registered investment adviser · Sep 30, 2026	70,263	0.65%	0	Sep 30, 2026
14	Krandel Judy Insider CIK 1668351 · Mar 23, 2026 Chief Financial Officer, issuer-wide	68,861	0.63%	—	Mar 23, 2026	Chief Financial Officer, issuer-wide
15	VANGUARD EXTENDED MARKET INDEX FUND Fund S000002841 · Registered fund · Jun 30, 2026 VANGUARD INDEX FUNDS, not summed	67,742	0.62%	0	Jun 30, 2026	VANGUARD INDEX FUNDS, not summed
16	Mesirow Financial Investment Management, Inc. 13F CIK 1469475 · Registered investment adviser · Sep 30, 2026	60,000	0.55%	0	Sep 30, 2026
17	HighTower Advisors, LLC 13F CIK 1462245 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	59,710	0.55%	0	Jun 30, 2026	carried, not yet filed for the newest quarter
18	NAVELLIER & ASSOCIATES INC 13F CIK 872163 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	53,479	0.49%	+34,353	Jun 30, 2026	carried, not yet filed for the newest quarter
19	Lask Alisa Insider CIK 1767593 · Jan 1, 2025 Director, issuer-wide	48,629	0.45%	0	Jan 1, 2025	Director, issuer-wide
20	ESSEX INVESTMENT MANAGEMENT CO LLC 13F CIK 201772 · Registered investment adviser · Sep 30, 2026	38,927	0.36%	0	Sep 30, 2026
21	VANGUARD FIDUCIARY TRUST CO 13F CIK 933478 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	36,901	0.34%	0	Jun 30, 2026	carried, not yet filed for the newest quarter
22	BLAIR WILLIAM & CO/IL 13F CIK 902367 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	36,249	0.33%	0	Jun 30, 2026	carried, not yet filed for the newest quarter
23	CITADEL ADVISORS LLC 13F CIK 1423053 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	29,044	0.27%	+8,156	Jun 30, 2026	carried, not yet filed for the newest quarter
24	DIMENSIONAL FUND ADVISORS LP 13F CIK 354204 · Registered investment adviser · Sep 30, 2026	22,164	0.20%	0	Sep 30, 2026
24.1	Dimensional U.S. Core Equity 2 ETF Fund S000070903 · Registered fund · Jul 31, 2026 Dimensional ETF Trust, not summed	4,811	0.04%	0	Jul 31, 2026	Dimensional ETF Trust, not summed
24.2	U.S. Sustainability Core 1 Portfolio Fund S000020422 · Registered fund · Jul 31, 2026 DFA INVESTMENT DIMENSIONS GROUP INC, not summed	3,337	0.03%	0	Jul 31, 2026	DFA INVESTMENT DIMENSIONS GROUP INC, not summed
24.3	U.S. CORE EQUITY 2 PORTFOLIO Fund S000000980 · Registered fund · Jul 31, 2026 DFA INVESTMENT DIMENSIONS GROUP INC, not summed	2,725	0.03%	0	Jul 31, 2026	DFA INVESTMENT DIMENSIONS GROUP INC, not summed
24.4	Dimensional US Core Equity 1 ETF Fund S000081780 · Registered fund · Jul 31, 2026 Dimensional ETF Trust, not summed	2,462	0.02%	0	Jul 31, 2026	Dimensional ETF Trust, not summed
24.5	U.S. CORE EQUITY 1 PORTFOLIO Fund S000000979 · Registered fund · Jul 31, 2026 DFA INVESTMENT DIMENSIONS GROUP INC, not summed	2,333	0.02%	0	Jul 31, 2026	DFA INVESTMENT DIMENSIONS GROUP INC, not summed
25	BlackRock, Inc. 13F CIK 2012383 · Holding company · Jun 30, 2026 carried, not yet filed for the newest quarter	18,822	0.17%	+18,822	Jun 30, 2026	carried, not yet filed for the newest quarter
25.1	iShares Micro-Cap ETF Fund S000004439 · Registered fund · Jun 30, 2026 iShares Trust, not summed	17,742	0.16%	—	Jun 30, 2026	iShares Trust, not summed
26	Harris Joseph Michael Insider CIK 1946070 · Jan 1, 2025 Director, issuer-wide	17,693	0.16%	0	Jan 1, 2025	Director, issuer-wide
27	De Lisle Partners LLP 13F CIK 2011184 · Non-US institution · Jun 30, 2026 carried, not yet filed for the newest quarter	17,400	0.16%	-7,600	Jun 30, 2026	carried, not yet filed for the newest quarter
28	NORTHERN TRUST CORP 13F CIK 73124 · Bank · Jun 30, 2026 carried, not yet filed for the newest quarter	16,706	0.15%	+5,878	Jun 30, 2026	carried, not yet filed for the newest quarter
29	STATE STREET CORP 13F CIK 93751 · Bank · Jun 30, 2026 carried, not yet filed for the newest quarter	15,698	0.14%	0	Jun 30, 2026	carried, not yet filed for the newest quarter
30	GOLDMAN SACHS GROUP INC 13F CIK 886982 · Holding company · Jun 30, 2026 carried, not yet filed for the newest quarter	12,836	0.12%	-1,327	Jun 30, 2026	carried, not yet filed for the newest quarter
31	MERCER GLOBAL ADVISORS INC /ADV 13F CIK 853758 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	12,500	0.12%	+12,500	Jun 30, 2026	carried, not yet filed for the newest quarter
32	Cannell & Spears LLC 13F CIK 1426319 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	11,000	0.10%	0	Jun 30, 2026	carried, not yet filed for the newest quarter
33	ELKHORN PARTNERS LIMITED PARTNERSHIP 13F CIK 928400 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	11,000	0.10%	-1,000	Jun 30, 2026	carried, not yet filed for the newest quarter
34	Nettis Lisa Marie Insider CIK 2076008 · Nov 10, 2025 Director, issuer-wide	1,622	0.01%	—	Nov 10, 2025	Director, issuer-wide
35	1290 VT Micro Cap Portfolio Fund S000044688 · Registered fund · Jun 30, 2026 EQ Advisors Trust, not summed	1,080	0.01%	—	Jun 30, 2026	EQ Advisors Trust, not summed
36	UBS Group AG 13F CIK 1610520 · Bank · Jun 30, 2026 carried, not yet filed for the newest quarter	831	0.01%	+831	Jun 30, 2026	carried, not yet filed for the newest quarter
37	ROYAL BANK OF CANADA 13F CIK 1000275 · Bank · Jun 30, 2026 carried, not yet filed for the newest quarter	827	0.01%	+80	Jun 30, 2026	carried, not yet filed for the newest quarter
38	JONES FINANCIAL COMPANIES LLLP 13F CIK 815917 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	227	0.00%	+196	Jun 30, 2026	carried, not yet filed for the newest quarter
39	OSAIC HOLDINGS, INC. 13F CIK 1677044 · Holding company · Jun 30, 2026 carried, not yet filed for the newest quarter	175	0.00%	0	Jun 30, 2026	carried, not yet filed for the newest quarter
40	SBI Securities Co., Ltd. 13F CIK 1851815 · Non-US institution · Sep 30, 2026	154	0.00%	+4	Sep 30, 2026
41	NORTHWESTERN MUTUAL WEALTH MANAGEMENT CO 13F CIK 1141802 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	133	0.00%	+133	Jun 30, 2026	carried, not yet filed for the newest quarter
42	HARBOUR INVESTMENTS, INC. 13F CIK 810121 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	50	0.00%	0	Jun 30, 2026	carried, not yet filed for the newest quarter
43	BARCLAYS PLC 13F CIK 312069 · Bank · Sep 30, 2026	23	0.00%	-4	Sep 30, 2026
44	FMR LLC 13F CIK 315066 · Holding company · Jun 30, 2026 carried, not yet filed for the newest quarter	6	0.00%	+6	Jun 30, 2026	carried, not yet filed for the newest quarter
44.1	Fidelity Extended Market Index Fund Fund S000006021 · Registered fund · Aug 31, 2026 Fidelity Concord Street Trust, not summed	32,139	0.30%	-1,568	Aug 31, 2026	Fidelity Concord Street Trust, not summed
44.2	Fidelity Total Market Index Fund Fund S000006026 · Registered fund · Aug 31, 2026 Fidelity Concord Street Trust, not summed	11,571	0.11%	0	Aug 31, 2026	Fidelity Concord Street Trust, not summed
44.3	Fidelity Series Total Market Index Fund Fund S000065248 · Registered fund · Aug 31, 2026 Fidelity Concord Street Trust, not summed	9,528	0.09%	0	Aug 31, 2026	Fidelity Concord Street Trust, not summed
44.4	Fidelity Nasdaq Composite Index Fund Fund S000055366 · Registered fund · Aug 31, 2026 Fidelity Concord Street Trust, not summed	3,085	0.03%	0	Aug 31, 2026	Fidelity Concord Street Trust, not summed
45	CITIGROUP INC 13F CIK 831001 · Bank · Sep 30, 2026	1	0.00%	+1	Sep 30, 2026

3 more nested rows are not shown here; Every filing lists them all.

Shares are restated onto today's split basis. Change compares each row with the same holder's previous filing in the same source; a dash means there is none to compare. Nested 13D/G, insider and fund rows are not summed, since a 13F report already holds them.

Key facts CIK 1196298 CUSIP 640671400 13F (30d) 7 filings 7 filers Visit website Investor relations