AMEX : ATNM
$0.04 (5.12%)
%
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| Filing Date | Reporting Person | Amount Beneficially Owned | % of Class |
|---|---|---|---|
| 2025-07-29 | The Vanguard Group | 1.37M | 4.39% |
| 2025-07-16 | BlackRock, Inc. | 462.97K | 1.50% |
| 2024-11-04 | The Vanguard Group | 1.62M | 5.21% |
| 2024-01-29 | (1) BlackRock, Inc. | 1.69M | 6.20% |
| 2022-02-09 | District 2 GP LLC | 513.1K | 2.30% |
| 2022-02-09 | Bigger Capital Fund GP, LLC | 323.24K | 1.50% |
| 2022-02-09 | Bigger Capital Fund GP, LLC | 323.24K | 1.50% |
| 2022-02-09 | District 2 Capital Fund LP | 513.1K | 2.30% |
| 2022-02-09 | District 2 Capital LP | 513.1K | 2.30% |
| 2022-02-09 | District 2 GP LLC | 513.1K | 2.30% |
| 2022-02-09 | District 2 Holdings LLC | 513.1K | 2.30% |
| 2022-02-09 | Michael Bigger | 1.31M | 6.00% |
| 2022-02-09 | Bigger Capital Fund, LP | 323.24K | 1.50% |
| 2022-02-09 | Patricia Winter | 107.77K | 1.00% |
| 2022-02-09 | Bigger Capital Fund, LP | 323.24K | 1.50% |
| 2022-02-09 | District 2 Holdings LLC | 513.1K | 2.30% |
| 2022-02-09 | District 2 Capital Fund LP | 513.1K | 2.30% |
| 2022-02-09 | Michael Bigger | 1.31M | 6.00% |
| 2022-02-09 | District 2 Capital LP | 513.1K | 2.30% |
| 2022-02-09 | Patricia Winter | 107.77K | 1.00% |
| 2021-02-12 | Bigger Capital Fund, LP | 292.73K | 2.10% |
| 2021-02-11 | Perkins Capital Managment, Inc. | 1.31M | 6.10% |
| 2020-08-12 | Bigger Capital Fund, LP | 287.73K | 2.10% |
| 2020-08-12 | Eric Schlanger | 331.3K | 2.40% |
| 2020-08-12 | District 2 Holdings LLC | 323.83K | 2.40% |
| 2020-08-12 | District 2 GP LLC | 323.83K | 2.40% |
| 2020-08-12 | District 2 Capital Fund LP | 323.83K | 2.40% |
| 2020-08-12 | Michael Bigger | 805.06K | 5.90% |
| 2020-08-12 | Bigger Capital Fund GP, LLC | 287.73K | 2.10% |
| 2020-08-12 | District 2 Capital Fund LP | 323.83K | 2.40% |
| 2020-08-12 | District 2 Capital LP | 323.83K | 2.40% |
| 2020-08-12 | Patricia Winter | 31333.0 | 1.00% |
| 2020-08-12 | District 2 GP LLC | 323.83K | 2.40% |
| 2020-08-12 | Michael Bigger | 805.06K | 5.90% |
| 2020-08-12 | Eric Schlanger | 331.3K | 2.40% |
| 2020-08-12 | Bigger Capital Fund, LP | 287.73K | 2.10% |
| 2020-08-12 | Patricia Winter | 31333.0 | 1.00% |
| 2020-08-12 | District 2 Holdings LLC | 323.83K | 2.40% |
| 2020-08-12 | District 2 Capital LP | 323.83K | 2.40% |
| 2020-08-12 | Bigger Capital Fund GP, LLC | 287.73K | 2.10% |
| 2020-05-01 | Sabby Volatility Warrant Master Fund, Ltd. | 20.1M | 7.29% |
| 2020-04-27 | Bigger Capital Fund, LP | 6.45M | 1.70% |
| 2020-02-14 | Michael Bigger | 7.57M | 4.90% |
| 2020-02-14 | District 2 Holdings LLC | 2.83M | 1.70% |
| 2020-02-14 | District 2 GP LLC | 2.83M | 1.70% |
| 2020-02-14 | District 2 Capital LP | 2.83M | 1.70% |
| 2020-02-14 | District 2 Capital Fund LP | 2.83M | 1.70% |
| 2020-02-14 | Patricia Winter | 1.15M | 1.00% |
| 2020-02-14 | Bigger Capital Fund GP, LLC | 3.19M | 1.90% |
| 2020-02-14 | Patricia Winter | 1.15M | 1.00% |
| 2020-02-14 | Michael Bigger | 7.57M | 4.90% |
| 2020-02-14 | Bigger Capital Fund, LP | 3.19M | 1.90% |
| 2020-02-14 | Eric Schlanger | 2.83M | 1.90% |
| 2020-02-14 | Bigger Capital Fund, LP | 3.19M | 1.90% |
| 2020-02-14 | Eric Schlanger | 2.83M | 1.90% |
| 2020-02-14 | Perkins Capital Managment, Inc. | 1.38M | 7.75% |
| 2020-02-14 | Bigger Capital Fund GP, LLC | 3.19M | 1.90% |
| 2020-02-14 | District 2 Capital Fund LP | 2.83M | 1.70% |
| 2020-02-14 | District 2 GP LLC | 2.83M | 1.70% |
| 2020-02-14 | District 2 Capital LP | 2.83M | 1.70% |
| 2020-02-14 | District 2 Holdings LLC | 2.83M | 1.70% |
| 2019-10-31 | Bigger Capital Fund, LP | 2.89M | 1.80% |
| 2019-10-31 | Bigger Capital Fund, LP | 2.89M | 1.80% |
| 2019-10-31 | Bigger Capital Fund GP, LLC | 2.89M | 1.80% |
| 2019-10-31 | District 2 GP LLC | 3.62M | 2.20% |
| 2019-10-31 | District 2 Holdings LLC | 3.62M | 2.20% |
| 2019-10-31 | Michael Bigger | 8.32M | 5.10% |
| 2019-10-31 | Patricia Winter | 1.05M | 1.00% |
| 2019-10-31 | Eric Schlanger | 3.84M | 2.40% |
| 2019-10-31 | District 2 Capital Fund LP | 3.62M | 2.20% |
| 2019-10-31 | District 2 Capital Fund LP | 3.62M | 2.20% |
| 2019-10-31 | Michael Bigger | 8.32M | 5.10% |
| 2019-10-31 | Patricia Winter | 1.05M | 1.00% |
| 2019-10-31 | Eric Schlanger | 3.84M | 2.40% |
| 2019-10-31 | District 2 GP LLC | 3.62M | 2.20% |
| 2019-10-31 | Bigger Capital Fund GP, LLC | 2.89M | 1.80% |
| 2019-10-31 | District 2 Holdings LLC | 3.62M | 2.20% |
| 2019-10-31 | District 2 Capital LP | 3.62M | 2.20% |
| 2019-10-31 | District 2 Capital LP | 3.62M | 2.20% |
| 2019-04-18 | Sabby Volatility Warrant Master Fund, Ltd. | 12.99M | 8.02% |
| 2019-01-17 | Empery Asset Management, LP | 500K | 2.77% |
| 2019-01-17 | Martin D. Hoe | 500K | 2.77% |
| 2019-01-17 | Ryan M. Lane | 500K | 2.77% |
| 2018-10-09 | Empery Asset Management, LP | 500K | 6.46% |
| 2018-10-09 | Martin D. Hoe | 500K | 6.46% |
| 2018-10-09 | Ryan M. Lane | 500K | 6.46% |
| 2018-10-05 | Laurence W. Lytton | 900K | 5.80% |
| 2018-10-03 | Bigger Capital Fund, LP | 600K | 3.90% |
| 2018-10-03 | Bigger Capital Fund GP, LLC | 600K | 3.90% |
| 2018-10-03 | District 2 Capital LP | 300K | 1.90% |
| 2018-10-03 | District 2 GP LLC | 300K | 1.90% |
| 2018-10-03 | District 2 Holdings LLC | 300K | 1.90% |
| 2018-10-03 | District 2 Capital Fund LP | 300K | 1.90% |
| 2018-10-03 | Patricia Winter | 49200.0 | 1.00% |
| 2018-10-03 | Michael Bigger | 1.05M | 6.80% |
| 2018-03-13 | Winson | 6M | 5.50% |
| 2018-03-13 | LLC | 6M | 5.50% |
| 2018-03-13 | Inc. | 6M | 5.50% |
| 2018-03-13 | Winson | 6M | 5.50% |
| 2018-03-13 | LLC | 6M | 5.50% |
| 2018-03-13 | Management LP | 6M | 5.50% |
| 2018-03-13 | Nathoo | 6M | 5.50% |
| 2018-03-13 | Inc. | 6M | 5.50% |
| 2018-03-13 | Kassam | 6M | 5.50% |
| 2018-03-13 | Management LP | 6M | 5.50% |
| 2018-03-13 | Nathoo | 6M | 5.50% |
| 2018-03-13 | Kassam | 6M | 5.50% |
| 2018-02-13 | Memorial Sloan-Kettering Cancer Center | 1.23M | 1.54% |
| 2017-08-04 | Armistice Capital, LLC | 4M | 5.00% |
| 2017-08-04 | Armistice Capital, LLC | 4M | 5.00% |
| 2017-08-04 | Armistice Capital Master Fund Ltd. | 4M | 5.00% |
| 2017-08-04 | Armistice Capital Master Fund Ltd. | 4M | 5.00% |
| 2017-08-04 | Steven Boyd | 4M | 5.00% |
| 2017-08-04 | Steven Boyd | 4M | 5.00% |
| 2017-02-10 | Memorial Sloan-Kettering Cancer Center | 4.21M | 7.55% |
| 2017-02-10 | Memorial Sloan-Kettering Cancer Center | 4.21M | 7.55% |
| 2016-09-15 | Memorial Sloan-Kettering Cancer Center | 4.55M | 9.54% |
| 2016-09-15 | Memorial Sloan-Kettering Cancer Center | 4.55M | 9.54% |
| Date | Stock Price | Shares Outstanding | Market Cap | Cash & Equivalents | Total Debt | Enterprise Value |
|---|---|---|---|---|---|---|
| 2025-12-31 | $1.36 | 31.2M | $42.43M | $48M | $1.69M | -$3.88M |
| 2024-12-31 | $1.26 | 30.07M | $37.89M | $72.9M | $1.57M | -$33.44M |
| 2023-12-31 | $5.08 | 26.6M | $135.15M | $76.68M | $2.11M | $60.58M |
| 2022-12-31 | $10.65 | 24.14M | $257.11M | $108.91M | $2.58M | $150.78M |
| 2021-12-31 | $6.01 | 20.57M | $123.61M | $77.83M | $310K | $46.09M |
| 2020-12-31 | $7.80 | 12.13M | $94.65M | $63.61M | $738K | $31.78M |
| 2019-12-31 | $6.53 | 4.98M | $32.5M | $9.25M | $1.43M | $24.67M |
| 2018-12-31 | $11.61 | 3.54M | $41.04M | $13.67M | $262.59K | $27.63M |
| 2017-12-31 | $19.91 | 2.22M | $44.3M | $17.4M | -$ | $26.9M |
| 2016-12-31 | $26.25 | 1.62M | $42.39M | $20.52M | -$ | $21.87M |
| Date | Stock Price | Shares Outstanding | Market Cap | Cash & Equivalents | Total Debt | Enterprise Value |
|---|---|---|---|---|---|---|
| 2026-03-31 | $1.00 | 31.24M | $31.09M | $42.13M | $1.52M | -$9.52M |
| 2025-12-31 | $1.36 | 31.2M | $42.43M | $48M | $1.69M | -$3.88M |
| 2025-09-30 | $1.60 | 31.2M | $49.91M | $53.39M | $1.14M | -$2.33M |
| 2025-06-30 | $1.40 | 31.2M | $43.67M | $59.93M | $1.29M | -$14.96M |
| 2025-03-31 | $1.61 | 31.2M | $50.23M | $65.32M | $1.43M | -$13.67M |
| 2024-12-31 | $1.26 | 31.2M | $39.31M | $72.9M | $1.57M | -$32.02M |
| 2024-09-30 | $1.88 | 31.07M | $58.41M | $78.66M | $1.71M | -$18.54M |
| 2024-06-30 | $7.20 | 30.1M | $216.74M | $86.04M | $1.85M | $132.55M |
| 2024-03-31 | $8.56 | 27.89M | $238.7M | $84.06M | $1.98M | $156.63M |
| 2023-12-31 | $5.08 | 27.63M | $140.38M | $76.68M | $2.11M | $65.82M |
| 2023-09-30 | $5.92 | 27.06M | $160.18M | $82.98M | $2.21M | $79.42M |
| 2023-06-30 | $7.42 | 26.22M | $194.54M | $91.28M | $2.34M | $105.6M |