Nephros Inc (NEPH) Insider Ownership

Historic Insider Ownership Trends

Nephros's three largest insider shareholders as of March 23, 2026 are Capital Lp Wexford (Director, 3.54Mn shares), Arthur H Amron (Director, 131.27K shares), Oliver J. Spandow (Director, 122.88K shares).

Top Direct Holders

Insider ownership data is derived from the last 60 months of Form 4 SEC filings.
Holder Position Shares (Direct) Shares (Indirect) Report Date
Capital Lp Wexford 0 3,544,492 03 Jun, 2021
Arthur H Amron 134,882 0 18 Mar, 2026
Arthur H Amron 131,272 0 13 Nov, 2025
Oliver J. Spandow 122,881 0 13 Nov, 2025
Andrew Astor President, Ceo Cfo 92,773 0 07 Mar, 2022
Robert R. Jr. Banks President And Ceo 70,000 0 16 May, 2024
Capital Lp Wexford 56,060 0 14 Mar, 2024
Alisa Lask 48,629 0 15 Dec, 2023
Tom Gwydir 43,226 0 09 Jan, 2023
Wesley S. Lobo Chief Marketing Officer 35,168 0 18 Feb, 2022
Joseph Michael Harris 17,693 0 15 Dec, 2023
Daron Evans Ceo Specialty Renal Products 0 8,669 01 Jun, 2021
Lisa Marie Nettis 1,622 0 13 Nov, 2025

* Please note that the shares above only reflect shares from the fund portfolio and the institutional portfolio. Shares from the personal portfolio are excluded from this Institutional Ownership Page. See these insiders' latest transactions here on Insider Page.

Recent Insider Transactions

Detailed insider trading activity based on Form 4 SEC filings.
Download Data
Transaction Date Insider Name Security Class Transaction Type Shares Traded Price Shares Remaining Ownership Code
16 Mar, 2026 Arthur H Amron Common Stock A 3,610 $0.00 134,882 D A
16 Mar, 2026 Judy Krandel Stock Option (right to buy) A 4,000 $0.00 4,000 D A
10 Nov, 2025 Arthur H Amron Common Stock A 5,391 $0.00 131,272 D A
10 Nov, 2025 Lisa Marie Nettis Common Stock A 1,622 $0.00 1,622 D A
10 Nov, 2025 Arthur H Amron Common Stock A 5,391 $0.00 131,272 D A
10 Nov, 2025 Oliver J. Spandow Common Stock A 8,036 $0.00 122,881 D A
11 Aug, 2025 Lisa Marie Nettis Stock Option (right to buy) A 13,229 $0.00 13,229 D A
27 Mar, 2025 Judy Krandel Stock Option (right to buy) A 54,359 $0.00 54,359 D A
27 Mar, 2025 Judy Krandel Stock Option (right to buy) A 54,359 $0.00 54,359 D A
01 Jan, 2025 Arthur H Amron Common Stock A 22,418 $0.00 125,881 D A
01 Jan, 2025 Arthur H Amron Common Stock A 22,418 $0.00 125,881 D A
01 Jan, 2025 Oliver J. Spandow Common Stock A 33,241 $0.00 114,845 D A
01 Jan, 2025 Arthur H Amron Stock Option (Right to Buy) A 7,050 $0.00 7,050 D A
01 Jan, 2025 Arthur H Amron Stock Option (Right to Buy) A 7,050 $0.00 7,050 D A
01 Jan, 2025 Joseph Michael Harris Stock Option (right to buy) A 7,050 $0.00 7,050 D A
01 Jan, 2025 Alisa Lask Stock Option (right to buy) A 7,050 $0.00 7,050 D A
01 Jan, 2025 Oliver J. Spandow Stock Option (Right to Buy) A 7,050 $0.00 7,050 D A
28 May, 2024 Arthur H Amron Common Stock A 2,000 $2.22 100,463 D P
28 May, 2024 Arthur H Amron Common Stock A 2,000 $2.22 100,463 D P
30 May, 2024 Arthur H Amron Common Stock A 3,000 $2.24 103,463 D P