person · Reporting owner

Amron Holdings LLC

Disclosed activity across 2 companies

Tapewire entity: 36460
SEC CIK: 0002139960

Reported relationships

Latest disclosed role at each company.

Company	Last reported as	Report date	Published
MAMMOTH ENERGY SERVICES, INC.TUSK · Entity 6519	Director	June 17, 2026	June 22, 2026
NEPHROS INCNEPH · Entity 7279	Director	September 14, 2026	September 16, 2026

Disclosed balances

About these balances

Latest available filing per company, not a reconstructed current portfolio. Matching sequences show the last reported balance with all source rows expandable; grouping alone does not establish account ownership. Do not add unresolved positions together. Filings may omit unchanged positions, and amendments may correct only part of an older disclosure. Jointly reported shares are not necessarily this owner's personal holdings.

MAMMOTH ENERGY SERVICES, INC.

Report date June 17, 2026 · Filed June 22, 2026

Jointly reported with Amron Arthur H

Security / award	Ownership account	Disclosed shares / units	Disclosure context
Common StockSEC Table I · non-derivative	Direct	86,256	Reported balance After 2026-06-17 transaction · row 1 Joint disclosure: continuity of the reported position is unresolved; see ownership footnotes. 1 source row Row 1 · 2026-06-17 · Other · Acquired 19,121 · Balance 86,256 F1: Represents an in-kind distribution from MEH SUB LLC, an entity managed by Wexford Capital LP, that does not involve (i) a purchase or a sale of securities or (ii) any additional consideration.
Common StockSEC Table I · non-derivative	IndirectSee footnote	10,329	Reported balance After 2026-06-17 transaction · row 2 Joint disclosure: continuity of the reported position is unresolved; see ownership footnotes. 1 source row Row 2 · 2026-06-17 · Other · Acquired 10,329 · Balance 10,329 F1: Represents an in-kind distribution from MEH SUB LLC, an entity managed by Wexford Capital LP, that does not involve (i) a purchase or a sale of securities or (ii) any additional consideration. F2: Represents the common stock of the Issuer held by Amron Holdings LLC ("Amron Holdings"). F3: Arthur Amron may, by reason of his status as a controlling person of Amron Holdings, be deemed to own beneficially the securities held by Amron Holdings. Mr. Amron holds the power to vote and to dispose of the securities held by Amron Holdings.

Filing footnotes · ownership attribution and instrument terms

F1: Represents an in-kind distribution from MEH SUB LLC, an entity managed by Wexford Capital LP, that does not involve (i) a purchase or a sale of securities or (ii) any additional consideration.

F2: Represents the common stock of the Issuer held by Amron Holdings LLC ("Amron Holdings").

F3: Arthur Amron may, by reason of his status as a controlling person of Amron Holdings, be deemed to own beneficially the securities held by Amron Holdings. Mr. Amron holds the power to vote and to dispose of the securities held by Amron Holdings.

NEPHROS INC

Report date September 14, 2026 · Filed September 16, 2026

Jointly reported with Amron Arthur H

Security / award	Ownership account	Disclosed shares / units	Disclosure context
Common StockSEC Table I · non-derivative	Direct	158,623	Reported balance After 2026-09-14 transaction · row 1 Joint disclosure: continuity of the reported position is unresolved; see ownership footnotes. 1 source row Row 1 · 2026-09-14 · Other · Acquired 17,749 · Balance 158,623 F1: Represents an in-kind distribution from Wexford Partners 11, L.P. ("WP11"), Wexford 11 Advisors LLC ("WP Advisors") and WPIC 2 LLC ("WPIC2", and together with WP11 and WP Advisors, the "Wexford Entities") that does not involve (i) a purchase or a sale of securities or (ii) any additional consideration.
Common StockSEC Table I · non-derivative	IndirectSee footnote	25,546	Last balance in matching sequence After 2026-09-14 transaction · row 3 Source-order balances reconcile. Account continuity and personal attribution are not independently verified. 2 source rows Row 2 · 2026-09-14 · Other · Acquired 2,836 · Balance 2,836 F1: Represents an in-kind distribution from Wexford Partners 11, L.P. ("WP11"), Wexford 11 Advisors LLC ("WP Advisors") and WPIC 2 LLC ("WPIC2", and together with WP11 and WP Advisors, the "Wexford Entities") that does not involve (i) a purchase or a sale of securities or (ii) any additional consideration. F2: Represents the common stock of the Issuer held by Amron Holdings LLC ("Amron Holdings"). F4: Arthur Amron may, by reason of his status as a controlling person of Amron Holdings, be deemed to own beneficially the securities held by Amron Holdings. Mr. Amron holds the power to vote and to dispose of the securities held by Amron Holdings. Row 3 · 2026-09-14 · Other · Acquired 22,710 · Balance 25,546 F3: Represents a sale of certain shares of common stock from the Wexford Entities to Amron Holdings, the proceeds of which were distributed to certain underlying investors of the Wexford Entities. No Wexford Entities shall receive any compensation, directly or indirectly, in connection with the transaction described herein. F2: Represents the common stock of the Issuer held by Amron Holdings LLC ("Amron Holdings"). F4: Arthur Amron may, by reason of his status as a controlling person of Amron Holdings, be deemed to own beneficially the securities held by Amron Holdings. Mr. Amron holds the power to vote and to dispose of the securities held by Amron Holdings.

Filing footnotes · ownership attribution and instrument terms

F1: Represents an in-kind distribution from Wexford Partners 11, L.P. ("WP11"), Wexford 11 Advisors LLC ("WP Advisors") and WPIC 2 LLC ("WPIC2", and together with WP11 and WP Advisors, the "Wexford Entities") that does not involve (i) a purchase or a sale of securities or (ii) any additional consideration.

F2: Represents the common stock of the Issuer held by Amron Holdings LLC ("Amron Holdings").

F3: Represents a sale of certain shares of common stock from the Wexford Entities to Amron Holdings, the proceeds of which were distributed to certain underlying investors of the Wexford Entities. No Wexford Entities shall receive any compensation, directly or indirectly, in connection with the transaction described herein.

F4: Arthur Amron may, by reason of his status as a controlling person of Amron Holdings, be deemed to own beneficially the securities held by Amron Holdings. Mr. Amron holds the power to vote and to dispose of the securities held by Amron Holdings.

Transaction history

JSON API

Purchases/sales include open-market and private transactions. Plan disclosure applies to the filing; individual rows may differ. “Not disclosed” is not “unplanned.”

The cutoff filters transaction history only. Company summaries and owner relationships show the latest available disclosures. Parser corrections can improve historical records.

Transaction date	Company	Activity / security	Shares / units	Reported price	Reported value	Details
September 14, 2026 Filed Sep 16, 2026 20:59 UTC	NEPHROS INC NEPH · Entity 7279	OtherCommon Stock	22,710	$3.95	$89,704.50	Disclosure SEC source: 0001398344-26-017116 · fp0100871-2_4.xml · nonDerivative · entry 3 Amron Arthur H · CIK 0001179697 · Director Amron Holdings LLC · CIK 0002139960 · Director Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: No plan indicated Ownership: Indirect · See footnote Disclosed balance after: 25,546 F3 · kind: Represents a sale of certain shares of common stock from the Wexford Entities to Amron Holdings, the proceeds of which were distributed to certain underlying investors of the Wexford Entities. No Wexford Entities shall receive any compensation, directly or indirectly, in connection with the transaction described herein. F2 · balance_after: Represents the common stock of the Issuer held by Amron Holdings LLC ("Amron Holdings"). F4 · ownership.nature: Arthur Amron may, by reason of his status as a controlling person of Amron Holdings, be deemed to own beneficially the securities held by Amron Holdings. Mr. Amron holds the power to vote and to dispose of the securities held by Amron Holdings. Read SEC document
September 14, 2026 Filed Sep 16, 2026 20:59 UTC	NEPHROS INC NEPH · Entity 7279	OtherCommon Stock	2,836	$0.00	$0.00	Disclosure SEC source: 0001398344-26-017116 · fp0100871-2_4.xml · nonDerivative · entry 2 Amron Arthur H · CIK 0001179697 · Director Amron Holdings LLC · CIK 0002139960 · Director Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: No plan indicated Ownership: Indirect · See footnote Disclosed balance after: 2,836 F1 · kind: Represents an in-kind distribution from Wexford Partners 11, L.P. ("WP11"), Wexford 11 Advisors LLC ("WP Advisors") and WPIC 2 LLC ("WPIC2", and together with WP11 and WP Advisors, the "Wexford Entities") that does not involve (i) a purchase or a sale of securities or (ii) any additional consideration. F2 · balance_after: Represents the common stock of the Issuer held by Amron Holdings LLC ("Amron Holdings"). F4 · ownership.nature: Arthur Amron may, by reason of his status as a controlling person of Amron Holdings, be deemed to own beneficially the securities held by Amron Holdings. Mr. Amron holds the power to vote and to dispose of the securities held by Amron Holdings. Read SEC document
September 14, 2026 Filed Sep 16, 2026 20:59 UTC	NEPHROS INC NEPH · Entity 7279	OtherCommon Stock	17,749	$0.00	$0.00	Disclosure SEC source: 0001398344-26-017116 · fp0100871-2_4.xml · nonDerivative · entry 1 Amron Arthur H · CIK 0001179697 · Director Amron Holdings LLC · CIK 0002139960 · Director Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 158,623 F1 · kind: Represents an in-kind distribution from Wexford Partners 11, L.P. ("WP11"), Wexford 11 Advisors LLC ("WP Advisors") and WPIC 2 LLC ("WPIC2", and together with WP11 and WP Advisors, the "Wexford Entities") that does not involve (i) a purchase or a sale of securities or (ii) any additional consideration. Read SEC document
June 17, 2026 Filed Jun 22, 2026 20:32 UTC	MAMMOTH ENERGY SERVICES, INC. TUSK · Entity 6519	OtherCommon Stock	10,329	$0.00	$0.00	Disclosure SEC source: 0001398344-26-011116 · fp0099446-3_4.xml · nonDerivative · entry 2 Amron Arthur H · CIK 0001179697 · Director Amron Holdings LLC · CIK 0002139960 · Director Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: No plan indicated Ownership: Indirect · See footnote Disclosed balance after: 10,329 F1 · kind: Represents an in-kind distribution from MEH SUB LLC, an entity managed by Wexford Capital LP, that does not involve (i) a purchase or a sale of securities or (ii) any additional consideration. F2 · balance_after: Represents the common stock of the Issuer held by Amron Holdings LLC ("Amron Holdings"). F3 · ownership.nature: Arthur Amron may, by reason of his status as a controlling person of Amron Holdings, be deemed to own beneficially the securities held by Amron Holdings. Mr. Amron holds the power to vote and to dispose of the securities held by Amron Holdings. Read SEC document
June 17, 2026 Filed Jun 22, 2026 20:32 UTC	MAMMOTH ENERGY SERVICES, INC. TUSK · Entity 6519	OtherCommon Stock	19,121	$0.00	$0.00	Disclosure SEC source: 0001398344-26-011116 · fp0099446-3_4.xml · nonDerivative · entry 1 Amron Arthur H · CIK 0001179697 · Director Amron Holdings LLC · CIK 0002139960 · Director Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 86,256 F1 · kind: Represents an in-kind distribution from MEH SUB LLC, an entity managed by Wexford Capital LP, that does not involve (i) a purchase or a sale of securities or (ii) any additional consideration. Read SEC document

Value uses the disclosed total when available, otherwise shares × reported transaction price. It is not an estimate of exercise cash cost or investment performance.