Vault-13

NEPHROS INC NEPH

COM · Common Stock · CUSIP 640671400

33 institutional holders +6 vs Q1 2026
5,313,1405.3m shares reported held*
48.9% of all shares outstanding*
$19.0mreported value*
7 new 7 added 9 reduced 1 sold out net sold ≈ $204.0k (-57.1k shares)

* Summed across managers. Shares that two managers' reports both contain – a subsidiary's holdings that its parent's report includes too, or a sub-adviser's in its client's – are counted once. Holder counts are more reliable. Shares outstanding: 10.9m as of 2026-08-07, from the company's own SEC filing; the percentage can still exceed 100%: lent-out shares are counted by the lender and the buyer, and some reports overlap without saying so. Implied quarter-end price ≈ $3.57.

Trends to Q2 2026

Institutional holders

Managers reporting a position, each quarter

02040Q3 22: 19Q4 22: 20Q1 23: 19Q2 23: 17Q3 23: 15Q4 23: 19Q1 24: 19Q2 24: 20Q3 24: 18Q4 24: 19Q1 25: 19Q2 25: 22Q3 25: 24Q4 25: 35Q1 26: 27Q2 26: 3333Q3 22Q3 23Q3 24Q3 25Q2 26
Numbers
QuarterHolders
Q3 202219
Q4 202220
Q1 202319
Q2 202317
Q3 202315
Q4 202319
Q1 202419
Q2 202420
Q3 202418
Q4 202419
Q1 202519
Q2 202522
Q3 202524
Q4 202535
Q1 202627
Q2 202633

Buyers vs sellers

Managers adding to or starting a position, vs cutting or selling out

Bought or addedCut or sold out
40040Q3 24: 5 bought or addedQ3 24: 8 cut or sold outQ4 24: 4 bought or addedQ4 24: 9 cut or sold outQ4 24Q1 25: 6 bought or addedQ1 25: 6 cut or sold outQ2 25: 12 bought or addedQ2 25: 6 cut or sold outQ2 25Q3 25: 8 bought or addedQ3 25: 10 cut or sold outQ4 25: 25 bought or addedQ4 25: 8 cut or sold outQ4 25Q1 26: 7 bought or addedQ1 26: 19 cut or sold outQ2 26: 14 bought or addedQ2 26: 10 cut or sold outQ2 26
Numbers
QuarterBought or addedCut or sold out
Q3 202458
Q4 202449
Q1 202566
Q2 2025126
Q3 2025810
Q4 2025258
Q1 2026719
Q2 20261410

Biggest buyers

NAVELLIER & ASSOCIATES INC Added +34,353+34.4k
BlackRock, Inc. New +18,822+18.8k
MORGAN STANLEY Added +18,000+18.0k
MERCER GLOBAL ADVISORS INC /ADV New +12,500+12.5k
CITADEL ADVISORS LLC Added +8,156+8.2k
NORTHERN TRUST CORP Added +5,878+5.9k
DIMENSIONAL FUND ADVISORS LP Added +1,419+1.4k
UBS Group AG New +831+831
JONES FINANCIAL COMPANIES LLLP Added +196+196
SBI Securities Co., Ltd. New +150+150

Biggest sellers

Mesirow Financial Investment Management, Inc. Reduced -60,000-60.0k
Topline Capital Management, LLC Reduced -46,269-46.3k
RENAISSANCE TECHNOLOGIES LLC Reduced -21,896-21.9k
PRELUDE CAPITAL MANAGEMENT, LLC Sold out -13,680-13.7k
De Lisle Partners LLP Reduced -7,600-7.6k
BARD ASSOCIATES INC Reduced -3,199-3.2k
GEODE CAPITAL MANAGEMENT, LLC Reduced -2,662-2.7k
GOLDMAN SACHS GROUP INC Reduced -1,327-1.3k
ELKHORN PARTNERS LIMITED PARTNERSHIP Reduced -1,000-1.0k
ESSEX INVESTMENT MANAGEMENT CO LLC Reduced -57-57

Major shareholders (over 5%)

Anyone who owns more than 5% of a class of the company's shares has to say so: on Schedule 13D if they may try to influence or control the company, on 13G if they're a passive investor, and update it as the stake changes. Each holder's latest filing, from 19 Dec 2024 on; percentages are of the share class, as the holder worked them out.

HolderStakeChangeShares Last filed
DAVIDSON CHARLES E 13G · passive investor new · filed 2026-09-16 5.7% new 616.9k≈ $2.2m 2026-09-16
Topline Capital Management, LLC 13G · institution new · filed 2025-11-14 5.6% new 595.3k≈ $2.1m 2025-11-14

Fell to 5% or below in the last year: WEXFORD CAPITAL LP (2.1%, 2026-09-16)

Insider purchases and sales since 1 Apr 2026

Shares bought or sold by the company's own officers, directors and 10% owners, in the open market or privately, as they reported to the SEC on Form 4 (due within two business days of the trade). Grants, option exercises, shares withheld for tax and gifts aren't included.

None reported since 1 Apr 2026.

Holders, Q2 2026

#ManagerLocationShares Value% of their portfolioChangeShares change
1 WEXFORD CAPITAL LP 1.76% of their portfolio WEST PALM BEACH, FL 3,600,5523.6m $12.9m $12.9m 1.76% Unchanged
2 Topline Capital Management, LLC 0.50% of their portfolio SANTA MONICA, CA 535,698535.7k $1.9m $1.9m 0.50% Reduced -46.3k -46,269
3 VANGUARD CAPITAL MANAGEMENT LLC 0.00% of their portfolio MALVERN, PA 198,643198.6k $709.2k $709.2k 0.00% Unchanged
4 MORGAN STANLEY 0.00% of their portfolio NEW YORK, NY 128,915128.9k $460.2k $460.2k 0.00% Added +18.0k +18,000
5 Cornerstone Capital, Inc. 0.04% of their portfolio Palo Alto, CA 128,700128.7k $459.5k $459.5k 0.04% Unchanged
6 BARD ASSOCIATES INC 0.09% of their portfolio CHICAGO, IL 118,003118.0k $421.3k $421.3k 0.09% Reduced -3.2k -3,199
7 RENAISSANCE TECHNOLOGIES LLC 0.00% of their portfolio NEW YORK, NY 77,50477.5k $276.7k $276.7k 0.00% Reduced -21.9k -21,896
8 GEODE CAPITAL MANAGEMENT, LLC 0.00% of their portfolio BOSTON, MA 70,26370.3k $250.9k $250.9k 0.00% Reduced -2.7k -2,662
9 Mesirow Financial Investment Management, Inc. 0.00% of their portfolio CHICAGO, IL 60,00060.0k $214.2k $214.2k 0.00% Reduced -60.0k -60,000
10 HighTower Advisors, LLC 0.00% of their portfolio CHICAGO, IL 59,71059.7k $213.2k $213.2k 0.00% Unchanged
11 NAVELLIER & ASSOCIATES INC 0.02% of their portfolio Reno, NV 53,47953.5k $190.9k $190.9k 0.02% Added +34.4k +34,353
12 ESSEX INVESTMENT MANAGEMENT CO LLC 0.02% of their portfolio BOSTON, MA 38,92738.9k $139.0k $139.0k 0.02% Reduced -57 -57
13 VANGUARD FIDUCIARY TRUST CO 0.00% of their portfolio MALVERN, PA 36,90136.9k $131.7k $131.7k 0.00% Unchanged
14 BLAIR WILLIAM & CO/IL 0.00% of their portfolio CHICAGO, IL 36,24936.2k $129.4k $129.4k 0.00% Unchanged
15 CITADEL ADVISORS LLC 0.00% of their portfolio MIAMI, FL 29,04429.0k $103.7k $103.7k 0.00% Added +8.2k +8,156
16 DIMENSIONAL FUND ADVISORS LP 0.00% of their portfolio AUSTIN, TX 22,16422.2k $79.1k $79.1k 0.00% Added +1.4k +1,419
17 BlackRock, Inc. 0.00% of their portfolio New York, NY 18,82218.8k $67.2k $67.2k 0.00% New
18 De Lisle Partners LLP 0.01% of their portfolio POOLE, X0 17,40017.4k $62.1k $62.1k 0.01% Reduced -7.6k -7,600
19 NORTHERN TRUST CORP 0.00% of their portfolio CHICAGO, IL 16,70616.7k $59.6k $59.6k 0.00% Added +5.9k +5,878
20 STATE STREET CORP 0.00% of their portfolio BOSTON, MA 15,69815.7k $56.0k $56.0k 0.00% Unchanged
21 GOLDMAN SACHS GROUP INC 0.00% of their portfolio NEW YORK, NY 12,83612.8k $45.8k $45.8k 0.00% Reduced -1.3k -1,327
22 MERCER GLOBAL ADVISORS INC /ADV 0.00% of their portfolio DENVER, CO 12,50012.5k $44.6k $44.6k 0.00% New
23 ELKHORN PARTNERS LIMITED PARTNERSHIP 0.03% of their portfolio OMAHA, NE 11,00011.0k $39.3k $39.3k 0.03% Reduced -1.0k -1,000
24 Cannell & Spears LLC 0.00% of their portfolio NEW YORK, NY 11,00011.0k $39.3k $39.3k 0.00% Unchanged
25 UBS Group AG 0.00% of their portfolio ZURICH, V8 831831 $3.0k $3.0k 0.00% New
26 ROYAL BANK OF CANADA 0.00% of their portfolio TORONTO, A6 827827 $3.0k $3.0k 0.00% Added +80 +80
27 JONES FINANCIAL COMPANIES LLLP 0.00% of their portfolio DES PERES, MO 227227 $819 $819 0.00% Added +196 +196
28 OSAIC HOLDINGS, INC. 0.00% of their portfolio SCOTTSDALE, AZ 175175 $624 $624 0.00% Unchanged
29 SBI Securities Co., Ltd. 0.00% of their portfolio TOKYO, M0 150150 $536 $536 0.00% New
30 NORTHWESTERN MUTUAL WEALTH MANAGEMENT CO 0.00% of their portfolio MILWAUKEE, WI 133133 $475 $475 0.00% New
31 HARBOUR INVESTMENTS, INC. 0.00% of their portfolio MADISON, WI 5050 $179 $179 0.00% Unchanged
32 BARCLAYS PLC 0.00% of their portfolio LONDON, X0 2727 $96 $96 0.00% New
33 FMR LLC 0.00% of their portfolio BOSTON, MA 66 $22 $22 0.00% New