SEC Form 4 · Updated Daily

ATNM

— ACTINIUM PHARMACEUTICALS, INC. Ownership

Insider and institutional ownership derived from SEC Form 4 filings. Click any owner to see their holdings across every company they’ve filed on, and how their position has changed over time.

Financials Ownership

Current Reporting Owners

Owner	Role	Shares Owned	As Of	Last Activity
SETH SANDESH	Director · Officer	1,965,355	2026-09-02	A
Nicholson, C. David	Director	63,300	2026-09-02	A
Steinhart Richard I	Director	63,116	2026-09-02	A
Shetty Ajit	Director	62,357	2026-09-02	A
Chell Jeffrey W.	Director	61,600	2026-09-02	A
Almenoff June Sherie	Director	18,000	2026-09-02	A

Recent Filings

Date	Owner	Activity	Shares	Price	Owned After
2026-09-02	Chell Jeffrey W.	Grant / award (derivative)	92,400	$0.00	92,400
2026-09-02	Chell Jeffrey W.	Grant / award	61,600	$0.00	61,600
2026-09-02	Steinhart Richard I	Grant / award (derivative)	94,200	$0.00	94,200
2026-09-02	Steinhart Richard I	Grant / award	62,800	$0.00	63,116
2026-09-02	SETH SANDESH	Grant / award (derivative)	1,130,400	$0.00	1,130,400
2026-09-02	SETH SANDESH	Grant / award	1,027,274	$0.00	1,965,355
2026-09-02	SETH SANDESH	Grant / award	753,600	$0.00	938,081
2026-09-02	Almenoff June Sherie	Grant / award (derivative)	27,000	$0.00	27,000
2026-09-02	Almenoff June Sherie	Grant / award	18,000	$0.00	18,000
2026-09-02	Nicholson, C. David	Grant / award (derivative)	94,200	$0.00	94,200
2026-09-02	Nicholson, C. David	Grant / award	62,800	$0.00	63,300
2026-09-02	Shetty Ajit	Grant / award (derivative)	92,400	$0.00	92,400
2026-09-02	Shetty Ajit	Grant / award	61,600	$0.00	62,357
2025-08-18	SETH SANDESH	Tax withholding	120,900	$1.71	184,481
2025-03-31	O'Loughlin Steve	Disposition to issuer (derivative)	3,333	$0.00	0
2025-03-31	SETH SANDESH	Disposition to issuer (derivative)	16,666	$0.00	0
2025-03-31	Shetty Ajit	Disposition to issuer (derivative)	8,333	$0.00	0
2025-03-31	Shetty Ajit	Disposition to issuer (derivative)	2,500	$0.00	0
2025-03-31	Nicholson, C. David	Disposition to issuer (derivative)	2,500	$0.00	0
2025-03-31	Almenoff June Sherie	Disposition to issuer (derivative)	50,000	$0.00	0
2025-03-31	Chell Jeffrey W.	Disposition to issuer (derivative)	2,500	$0.00	0
2025-03-31	Steinhart Richard I	Disposition to issuer (derivative)	2,500	$0.00	0
2024-11-01	Almenoff June Sherie	Grant / award (derivative)	50,000	$0.00	50,000
2023-12-28	Chell Jeffrey W.	Grant / award (derivative)	70,311	$0.00	70,311
2023-12-28	SETH SANDESH	Grant / award (derivative)	984,367	$0.00	984,367
2023-12-28	Shetty Ajit	Grant / award (derivative)	70,311	$0.00	70,311
2023-12-28	O'Loughlin Steve	Grant / award (derivative)	253,123	$0.00	253,123
2023-12-28	Steinhart Richard I	Grant / award (derivative)	70,311	$0.00	70,311
2023-12-28	Nicholson, C. David	Grant / award (derivative)	70,311	$0.00	70,311
2022-08-17	SETH SANDESH	Grant / award	300,000	$0.00	305,381
2022-07-01	Chell Jeffrey W.	Grant / award (derivative)	72,156	$0.00	72,156
2022-07-01	SETH SANDESH	Grant / award (derivative)	827,366	$0.00	827,366
2022-07-01	Shetty Ajit	Grant / award (derivative)	72,156	$0.00	72,156
2022-07-01	Steinhart Richard I	Grant / award (derivative)	72,156	$0.00	72,156
2022-07-01	Nicholson, C. David	Grant / award (derivative)	72,156	$0.00	72,156
2022-07-01	O'Loughlin Steve	Grant / award (derivative)	256,438	$0.00	256,348
2021-09-01	Nicholson, C. David	Grant / award (derivative)	18,351	$0.00	18,351
2021-09-01	SETH SANDESH	Grant / award (derivative)	310,182	$0.00	310,182
2021-09-01	Steinhart Richard I	Grant / award (derivative)	18,351	$0.00	18,351
2021-09-01	O'Loughlin Steve	Grant / award (derivative)	107,463	$0.00	107,463

Source: SEC EDGAR Form 4 filings. For informational purposes only — not investment advice.