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Actinium Pharmaceuticals, Inc. (ATNM)

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1.03

-0.02 (-1.90%)

При закрытии: Mar 27, 2026, 4:00 PM EDT

1.05

+0.02 (1.66%)

После закрытия: Mar 27, 2026, 5:49 PM EDT

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BIOEMTECH and NorthStar Medical Radioisotopes Announce Strategic Supply Agreement for Actinium-225 to Support Preclinical Radiopharmaceutical Research

BIOEMTECH and NorthStar Medical Radioisotopes Announce Strategic Supply Agreement for Actinium-225 to Support Preclinical Radiopharmaceutical Research

ATHENS, Greece & BELOIT, Wisc.--(BUSINESS WIRE)--BIOEMTECH, a developer of high-resolution PET and SPECT imaging systems for preclinical and translational research, today announced a strategic supply agreement with NorthStar Medical Radioisotopes (NorthStar) to secure a reliable supply and provide Actinium-225 (Ac-225) for use in preclinical studies conducted by BIOEMTECH customers. This agreement will provide BIOEMTECH'S customers with consistent access to Ac-225, a critical alpha-emitting iso.

Are Medical Stocks Lagging Actinium Pharmaceuticals (ATNM) This Year?

Are Medical Stocks Lagging Actinium Pharmaceuticals (ATNM) This Year?

Here is how Actinium Pharmaceuticals (ATNM) and Collegium Pharmaceutical (COLL) have performed compared to their sector so far this year.

Actinium Pharmaceuticals Presents New Preclinical Data Demonstrating Potent Anti-Tumor Activity of ATNM-400 Across Multiple Breast Cancer Subtypes Including Hormone Receptor-Positive, Triple-Negative, and Tamoxifen- and HER2 Therapy-Resistant Breast Cancer Models at SABCS 2025

Actinium Pharmaceuticals Presents New Preclinical Data Demonstrating Potent Anti-Tumor Activity of ATNM-400 Across Multiple Breast Cancer Subtypes Including Hormone Receptor-Positive, Triple-Negative, and Tamoxifen- and HER2 Therapy-Resistant Breast Cancer Models at SABCS 2025

- ATNM-400's target antigen is overexpressed in breast cancer and its expression is further increased in breast cancer cells resistant to standard of care endocrine therapy, tamoxifen and the HER2 therapy trastuzumab - The Actinium-225 alpha-emitter payload of ATNM-400 induced irreversible double-strand DNA breaks and has the potential to produce potent localized tumor killing with reduced off-target lung toxicity that limits the use of antibody drug conjugates - Data supports the continued development of ATNM-400 as a monotherapy or combination therapy to address multiple breast cancer subtypes with limited treatment options NEW YORK , Dec. 12, 2025 /PRNewswire/ -- Actinium Pharmaceuticals, Inc. (NYSE American: ATNM), a leader in the development of differentiated targeted radiotherapies, today announced the presentation of new preclinical data for ATNM-400, its first-in-class Actinium-225 (Ac-225) based antibody radioconjugate, at the 2025 San Antonio Breast Cancer Symposium (SABCS). The data highlight robust anti-tumor activity and a favorable tolerability profile across a broad panel of preclinical breast cancer models, including hormone receptor–positive (HR+), triple-negative breast cancer (TNBC), and tamoxifen- and trastuzumab-resistant tumors.

Actinium Pharmaceuticals Announces ATNM-400 Data Demonstrating Potent Efficacy in Triple-Negative Breast Cancer and Ability to Overcome Endocrine and HER2-Targeted Therapy Resistance Being Presented at the San Antonio Breast Cancer Symposium

Actinium Pharmaceuticals Announces ATNM-400 Data Demonstrating Potent Efficacy in Triple-Negative Breast Cancer and Ability to Overcome Endocrine and HER2-Targeted Therapy Resistance Being Presented at the San Antonio Breast Cancer Symposium

Presentation to include new data in triple-negative disease, a breast cancer subtype with poor outcomes and limited viable treatment options ATNM-400 overcomes HER2 therapy resistance and represents a novel targeted radiotherapy with the potential to avoid off-target toxicities including ILD that constrains other therapeutic modalities such as antibody drug conjugates ATNM-400 has demonstrated the potential to overcome resistance to first-line tamoxifen endocrine therapy Data to be presented on December 11, 2025 at 5:00 PM CT NEW YORK , Dec. 1, 2025 /PRNewswire/ -- Actinium Pharmaceuticals, Inc. (NYSE American: ATNM), a leader in the development of differentiated targeted radiotherapies, today announced compelling preclinical data for ATNM-400, a first-in-class Actinium-225 (AC-225) antibody radioconjugate, in hormone receptor positive (HR+), HER2 positive (HER2+) and triple-negative breast cancer (TNBC) that will be presented at the San Antonio Breast Cancer Symposium (SABCS) being held December 10‑14, 2025 in San Antonio, Texas. The data demonstrates significant anti-tumor activity in breast cancer models resistant to standard-of-care therapies including endocrine therapy tamoxifen and HER2-targeted therapy trastuzumab (Herceptin, Roche) as well as potent tumor growth inhibition in TNBC models.

The Race for the Global Radiotherapy Cancer Market; Actinium Pharmaceuticals' (ATNM) Big Bet

The Race for the Global Radiotherapy Cancer Market; Actinium Pharmaceuticals' (ATNM) Big Bet

Vancouver, Kelowna, and Delta, British Columbia--(Newsfile Corp. - November 17, 2025) - Investorideas.com, a go-to investing platform covering biotech and pharma stocks issues a snapshot looking at the radiotherapy cancer market, featuring Actinium Pharmaceuticals, Inc. (NYSE American: ATNM), a pioneer in the development of differentiated, targeted radiotherapies intended to meaningfully improve outcomes for patients with advanced cancers. Actinium is deploying its technologies, capabilities and intellectual property with approximately 250 issued and pending patents worldwide, to develop next-generation radiotherapies focused on solid tumors, hematology and conditioning for cellular therapies.

Actinium Announces Superior Anti-Tumor Activity of ATNM-400 in Lung Cancer Compared to the Leading First, Second and Third-Line Approved EGFR Mutant Therapies and Mechanistic Synergy with Osimertinib at the AACR-NCI-EORTC International Conference on Molecular Targets and Cancer Therapeutics

Actinium Announces Superior Anti-Tumor Activity of ATNM-400 in Lung Cancer Compared to the Leading First, Second and Third-Line Approved EGFR Mutant Therapies and Mechanistic Synergy with Osimertinib at the AACR-NCI-EORTC International Conference on Molecular Targets and Cancer Therapeutics

- ATNM-400 exhibits superior efficacy with 3-5x greater tumor growth inhibition compared to front line therapy osimertinib (EGFR TKI TAGRISSO®), second line therapy Dato-DXd (Trop-2 ADC DATROWAY®) and third line therapy amivantamab (EGFR-cMET bispecific RYBREVANT®) - Combination of ATNM-400 and osimertinib resulted in complete tumor regression in 100% of tumor bearing animals; synergistic mechanism supported by increased ATNM-400 target antigen expression after EGFR inhibition with osimertinib - Improved progression free survival has been demonstrated clinically with the combination of osimertinib and external beam radiotherapy providing strong rationale for a combination with targeted alpha-therapy - Data validates the multi-tumor potential of ATNM-400 in multiple disease and treatment settings that support several blockbuster drugs NEW YORK , Oct. 27, 2025 /PRNewswire/ -- Actinium Pharmaceuticals, Inc. (NYSE AMERICAN: ATNM) (Actinium or the Company), a pioneer in the development of differentiated targeted radiotherapies, today announced the presentation of the first ever preclinical data of ATNM-400 in non-small cell lung cancer (NSCLC). ATNM-400 a novel, multi-indication first-in-class antibody radioconjugate armed with the potent alpha-emitter Actinium-225 (Ac-225) is Actinium's lead solid tumor program, which is also being studied in prostate cancer.

Actinium Pharmaceuticals Presents New Data Demonstrating Potent and Durable Efficacy of ATNM-400, a First-in-Class Multi-Tumor Actinium-225 Radiotherapy, at the 32nd Annual Prostate Cancer Foundation Scientific Retreat

Actinium Pharmaceuticals Presents New Data Demonstrating Potent and Durable Efficacy of ATNM-400, a First-in-Class Multi-Tumor Actinium-225 Radiotherapy, at the 32nd Annual Prostate Cancer Foundation Scientific Retreat

- ATNM-400 targets a novel, non-PSMA antigen implicated in disease biology withcontinued expression following androgen receptor pathway inhibitor (ARPI) therapy and 177Lu-PSMA-617 therapy, enabling potent activity independent of PSMA expression - ATNM-400 demonstrated superior efficacy over PSMA-targeted radioligand therapy(177Lu-PSMA-617 and 225Ac-PSMA-617) with enhanced tumor control and prolonged survival in low-PSMA and treatment-resistant models - Demonstrated durable anti-tumor responses, exceeding those achieved with the ARPI enzalutamide - Combination of ATNM-400 with enzalutamide achieved complete tumor regressionin 40% of prostate cancer-bearing animals, demonstrating strong mechanistic synergy with AR pathway inhibition NEW YORK , Oct. 24, 2025 /PRNewswire/ -- Actinium Pharmaceuticals, Inc. (NYSE AMERICAN: ATNM) (Actinium or the Company), a pioneer in the development of differentiated targeted radiotherapies, today highlighted new preclinical data for ATNM-400, its novel, first-in-class antibody radioconjugate armed with the potent alpha-emitter Actinium-225 (Ac-225) at the 32nd Annual Prostate Cancer Foundation (PCF) Scientific Retreat being held October 23 – 25, 2025 in Carlsbad, CA. ATNM-400, which targets a non-PSMA antigen associated with prostate cancer progression and treatment resistance, demonstrated superior tumor control and improved overall survival compared with the active agents in key standard-of-care therapies including enzalutamide (the active agent in Xtandi®, Astellas/Pfizer) and 177Lu-PSMA-617 (the active agent in Pluvicto®, Novartis), as well as 225Ac-PSMA-617 across multiple preclinical prostate cancer models.

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BIOEMTECH and NorthStar Medical Radioisotopes Announce Strategic Supply Agreement for Actinium-225 to Support Preclinical Radiopharmaceutical Research

BIOEMTECH and NorthStar Medical Radioisotopes Announce Strategic Supply Agreement for Actinium-225 to Support Preclinical Radiopharmaceutical Research

ATHENS, Greece & BELOIT, Wisc.--(BUSINESS WIRE)--BIOEMTECH, a developer of high-resolution PET and SPECT imaging systems for preclinical and translational research, today announced a strategic supply agreement with NorthStar Medical Radioisotopes (NorthStar) to secure a reliable supply and provide Actinium-225 (Ac-225) for use in preclinical studies conducted by BIOEMTECH customers. This agreement will provide BIOEMTECH'S customers with consistent access to Ac-225, a critical alpha-emitting iso.

Actinium Pharmaceuticals Presents New Preclinical Data Demonstrating Potent Anti-Tumor Activity of ATNM-400 Across Multiple Breast Cancer Subtypes Including Hormone Receptor-Positive, Triple-Negative, and Tamoxifen- and HER2 Therapy-Resistant Breast Cancer Models at SABCS 2025

Actinium Pharmaceuticals Presents New Preclinical Data Demonstrating Potent Anti-Tumor Activity of ATNM-400 Across Multiple Breast Cancer Subtypes Including Hormone Receptor-Positive, Triple-Negative, and Tamoxifen- and HER2 Therapy-Resistant Breast Cancer Models at SABCS 2025

- ATNM-400's target antigen is overexpressed in breast cancer and its expression is further increased in breast cancer cells resistant to standard of care endocrine therapy, tamoxifen and the HER2 therapy trastuzumab - The Actinium-225 alpha-emitter payload of ATNM-400 induced irreversible double-strand DNA breaks and has the potential to produce potent localized tumor killing with reduced off-target lung toxicity that limits the use of antibody drug conjugates - Data supports the continued development of ATNM-400 as a monotherapy or combination therapy to address multiple breast cancer subtypes with limited treatment options NEW YORK , Dec. 12, 2025 /PRNewswire/ -- Actinium Pharmaceuticals, Inc. (NYSE American: ATNM), a leader in the development of differentiated targeted radiotherapies, today announced the presentation of new preclinical data for ATNM-400, its first-in-class Actinium-225 (Ac-225) based antibody radioconjugate, at the 2025 San Antonio Breast Cancer Symposium (SABCS). The data highlight robust anti-tumor activity and a favorable tolerability profile across a broad panel of preclinical breast cancer models, including hormone receptor–positive (HR+), triple-negative breast cancer (TNBC), and tamoxifen- and trastuzumab-resistant tumors.

Actinium Pharmaceuticals Announces ATNM-400 Data Demonstrating Potent Efficacy in Triple-Negative Breast Cancer and Ability to Overcome Endocrine and HER2-Targeted Therapy Resistance Being Presented at the San Antonio Breast Cancer Symposium

Actinium Pharmaceuticals Announces ATNM-400 Data Demonstrating Potent Efficacy in Triple-Negative Breast Cancer and Ability to Overcome Endocrine and HER2-Targeted Therapy Resistance Being Presented at the San Antonio Breast Cancer Symposium

Presentation to include new data in triple-negative disease, a breast cancer subtype with poor outcomes and limited viable treatment options ATNM-400 overcomes HER2 therapy resistance and represents a novel targeted radiotherapy with the potential to avoid off-target toxicities including ILD that constrains other therapeutic modalities such as antibody drug conjugates ATNM-400 has demonstrated the potential to overcome resistance to first-line tamoxifen endocrine therapy Data to be presented on December 11, 2025 at 5:00 PM CT NEW YORK , Dec. 1, 2025 /PRNewswire/ -- Actinium Pharmaceuticals, Inc. (NYSE American: ATNM), a leader in the development of differentiated targeted radiotherapies, today announced compelling preclinical data for ATNM-400, a first-in-class Actinium-225 (AC-225) antibody radioconjugate, in hormone receptor positive (HR+), HER2 positive (HER2+) and triple-negative breast cancer (TNBC) that will be presented at the San Antonio Breast Cancer Symposium (SABCS) being held December 10‑14, 2025 in San Antonio, Texas. The data demonstrates significant anti-tumor activity in breast cancer models resistant to standard-of-care therapies including endocrine therapy tamoxifen and HER2-targeted therapy trastuzumab (Herceptin, Roche) as well as potent tumor growth inhibition in TNBC models.

The Race for the Global Radiotherapy Cancer Market; Actinium Pharmaceuticals' (ATNM) Big Bet

The Race for the Global Radiotherapy Cancer Market; Actinium Pharmaceuticals' (ATNM) Big Bet

Vancouver, Kelowna, and Delta, British Columbia--(Newsfile Corp. - November 17, 2025) - Investorideas.com, a go-to investing platform covering biotech and pharma stocks issues a snapshot looking at the radiotherapy cancer market, featuring Actinium Pharmaceuticals, Inc. (NYSE American: ATNM), a pioneer in the development of differentiated, targeted radiotherapies intended to meaningfully improve outcomes for patients with advanced cancers. Actinium is deploying its technologies, capabilities and intellectual property with approximately 250 issued and pending patents worldwide, to develop next-generation radiotherapies focused on solid tumors, hematology and conditioning for cellular therapies.