$NEPH

$3.51 -$0.12 (3.31%) Close

$NEPH Overview Financial Statements SEC Filings Executives News Red Flags Capital Raising Ownership Insider Transactions Congressional Trades

Ownership

13F as of Q2 2026 · 10.9M shares outstanding

Who owns NEPH?

By type of holder

Institutions 48.9% Insiders 9.2% Everyone else 41.9%

Concentration Top 10 holders own 51.5%

Wexford Capital LP 33.2% · Topline Capital Management, LLC 4.9%

Institutional ownership

48.9%

-0.5 pts vs last qtr

Institutional holders

+6 vs last qtr

Net shares bought

−57.1K

by institutions in Q2 2026

New / sold out

7 / 1

positions opened vs closed

How is ownership changing?

Institutions, last 8 quarters

Biggest buyers in Q2 2026

Navellier & Associates Inc +34.4K
BlackRock, Inc. NEW +18.8K

Biggest sellers in Q2 2026

Mesirow Financial Investment Management, Inc. −60.0K
Topline Capital Management, LLC −46.3K

Who is planning to sell?

No insider has filed a notice of proposed sale (Form 144) for Nephros Inc in the last 12 months.

Is your stake being diluted?

Diluted share count, FY2022–FY2025

+6.5%

+2.13% a year

Each share's claim on the business

−6.1%

shrank without buying or selling a share

Spent on buybacks vs paid in stock

— vs $2.48M

over 4 fiscal years

Diluted shares, split-adjusted

Buybacks Stock-based comp

How patient are the owners?

Institutional shares by how long they've been held

5+ years11% 3–5 years69% 1–3 years14% Under 1 year6%

Quarterly turnover

2.4%

of institutional shares changed hands

Top 10 managers, median time held

4.5 years

Super Investors

Investment managers reporting NEPH on Form 13F

Holder	Shares	% of company	Change vs last qtr	Held since	% of their book
WC Wexford Capital LP 13D · 2.1%	3.6M	33.15%	Unchanged	2021	1.6%
Shares held by quarter Peak holding3.6M (Q3'25) Change over 8 quarters0 Share of the company33.150% Disclosed stake13D · 2.1% Wexford Capital LP's full portfolio →
TC Topline Capital Management, LLC	535.7K	4.93%	−46.3K (−8.0%)	2024	0.5%
Shares held by quarter Peak holding614.3K (Q4'25) Change over 8 quarters+535.7K Share of the company4.930% Topline Capital Management, LLC's full portfolio →

Wexford Capital LP

13D · 2.1%

3.6M

% of company

33.15%

Change vs last qtr

Unchanged

Held since

2021

Topline Capital Management, LLC

535.7K

% of company

4.93%

Change vs last qtr

−46.3K (−8.0%)

Held since

2024

24 more super investors behind a free account

See every manager holding Nephros Inc, how their position has changed, and how long they've held it.

Institutional Funds

Mutual funds and ETFs reporting NEPH on Form N-PORT; together they hold 2.7% of the company

Fund	Position value	Shares	% of company	% of the fund	As of
VT Vanguard Total Stock Market Index Fund Vanguard Index Funds	$467K	130.9K	1.21%	0.00%	June 30, 2026
VE Vanguard Extended Market Index Fund Vanguard Index Funds	$242K	67.7K	0.62%	0.00%	June 30, 2026

Vanguard Total Stock Market Index Fund

Vanguard Index Funds

Position value

$467K

% of company

1.21%

% of the fund

0.00%

As of

June 30, 2026

Vanguard Extended Market Index Fund

Vanguard Index Funds

Position value

$242K

% of company

0.62%

% of the fund

0.00%

As of

June 30, 2026

14 more funds behind a free account

See every fund holding Nephros Inc and how much of the fund the position is.

Insiders and 5%+ holders

From Forms 3/4/5 and Schedules 13D/G

Holder	Shares	% of company	Change vs last qtr	8 quarters	Held since	% of their book
WG Wexford GP LLC 5%+ holder 13D · 2.1%	223.5K	2.06%	—	—	—	—
This holder reports through Schedule 13D/G, not a quarterly 13F. Share of the company2.060% Disclosed stake13D · 2.1% View the 13D/G filing →
CE Charles E. Davidson 5%+ holder 13D · 2.1%	223.5K	2.06%	—	—	—	—
This holder reports through Schedule 13D/G, not a quarterly 13F. Share of the company2.060% Disclosed stake13D · 2.1% View the 13D/G filing →

Wexford GP LLC

5%+ holder13D · 2.1%

223.5K

% of company

2.06%

Change vs last qtr

—

Held since

—

Charles E. Davidson

5%+ holder13D · 2.1%

223.5K

% of company

2.06%

Change vs last qtr

—

Held since

—

8 more holders behind a free account

See every insider and 5%+ holder of Nephros Inc.

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