Synopsis:
Nimbus Therapeutics CEO Abbas Kazimi walks Alok Tayi through the company’s evolving pipeline and playbook for choosing the right risks in a noisy biotech environment. From Werner helicase for MSI-high cancers to a highly selective SIK2 program and GLP-1–adjacent strategies focused on body composition, Abbas details how Nimbus balances rigor, speed, and capital efficiency.
He shares candid lessons from pausing and later resurrecting AMPK beta in partnership with Eli Lilly, the decision to remain modality-agnostic but small-molecule-centric, and the importance of knowing when not to chase the latest fad. Throughout, Abbas returns to a consistent theme: success at Nimbus comes from disciplined target selection, deep collaboration, and a culture that empowers teams to make hard calls in service of patients rather than headlines.
Biography:
Abbas Kazimi is the Chief Executive Officer of Nimbus Therapeutics. Previously, he served as Chief Business Officer, leading the company’s strategic and corporate development efforts while overseeing business operations. Since joining Nimbus in 2014, he has helped raise over $630 million in equity financing and led transactions totaling more than $8 billion.
Notably, Mr. Kazimi spearheaded the $6 billion sale of Nimbus’s TYK2 program to Takeda, the $1.2 billion sale of its NASH (ACC) program to Gilead, and multiple licensing deals exceeding $1.5 billion with partners such as Genentech, Celgene/Roche, and Eli Lilly. Under his leadership, Nimbus has advanced four programs into the clinic, returned over $4 billion to investors, and continues to expand its computational drug discovery and clinical development capabilities.
In 2025, Mr. Kazimi joined the board of Unnatural Products (UNP), a biotech company pioneering orally delivered macrocyclic peptides to tackle previously undruggable targets. He also serves on the Editorial Advisory Board for In Vivo magazine, a leading publication offering strategic insights and analysis of the pharmaceutical, biotechnology, medtech, and consumer health industries. Along with his family, he established the Kazimi Family Endowment for Data Science in Oncology at MD Anderson Cancer Center. This endowment reflects their personal commitment to philanthropy and their vision for revolutionizing cancer treatment through data-driven innovation.
At the core of Mr. Kazimi’s leadership is a deep sense of purpose—one that seeks to change the trajectory of medical diagnoses where options are limited. The ability to give patients, prescribers, and families a new outlook on life is a powerful responsibility—and one he knows the biopharmaceutical sector has the ability to fulfill.
Before Nimbus, he was at Extera Partners, LLC (formerly PureTech Development, LLC), where he provided strategic advisory, supported fundraising, and executed numerous business development transactions. Earlier in his career, he was with JSB-Partners, LP, a specialized investment banking and advisory firm serving biotech and pharmaceutical companies.
Mr. Kazimi holds a B.A. from the University of Texas at Austin and an M.S. from Harvard University.
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Synopsis:
Nimbus Therapeutics CEO Abbas Kazimi walks Alok Tayi through the company’s evolving pipeline and playbook for choosing the right risks in a noisy biotech environment. From Werner helicase for MSI-high cancers to a highly selective SIK2 program and GLP-1–adjacent strategies focused on body composition, Abbas details how Nimbus balances rigor, speed, and capital efficiency.
He shares candid lessons from pausing and later resurrecting AMPK beta in partnership with Eli Lilly, the decision to remain modality-agnostic but small-molecule-centric, and the importance of knowing when not to chase the latest fad. Throughout, Abbas returns to a consistent theme: success at Nimbus comes from disciplined target selection, deep collaboration, and a culture that empowers teams to make hard calls in service of patients rather than headlines.
Biography:
Abbas Kazimi is the Chief Executive Officer of Nimbus Therapeutics. Previously, he served as Chief Business Officer, leading the company’s strategic and corporate development efforts while overseeing business operations. Since joining Nimbus in 2014, he has helped raise over $630 million in equity financing and led transactions totaling more than $8 billion.
Notably, Mr. Kazimi spearheaded the $6 billion sale of Nimbus’s TYK2 program to Takeda, the $1.2 billion sale of its NASH (ACC) program to Gilead, and multiple licensing deals exceeding $1.5 billion with partners such as Genentech, Celgene/Roche, and Eli Lilly. Under his leadership, Nimbus has advanced four programs into the clinic, returned over $4 billion to investors, and continues to expand its computational drug discovery and clinical development capabilities.
In 2025, Mr. Kazimi joined the board of Unnatural Products (UNP), a biotech company pioneering orally delivered macrocyclic peptides to tackle previously undruggable targets. He also serves on the Editorial Advisory Board for In Vivo magazine, a leading publication offering strategic insights and analysis of the pharmaceutical, biotechnology, medtech, and consumer health industries. Along with his family, he established the Kazimi Family Endowment for Data Science in Oncology at MD Anderson Cancer Center. This endowment reflects their personal commitment to philanthropy and their vision for revolutionizing cancer treatment through data-driven innovation.
At the core of Mr. Kazimi’s leadership is a deep sense of purpose—one that seeks to change the trajectory of medical diagnoses where options are limited. The ability to give patients, prescribers, and families a new outlook on life is a powerful responsibility—and one he knows the biopharmaceutical sector has the ability to fulfill.
Before Nimbus, he was at Extera Partners, LLC (formerly PureTech Development, LLC), where he provided strategic advisory, supported fundraising, and executed numerous business development transactions. Earlier in his career, he was with JSB-Partners, LP, a specialized investment banking and advisory firm serving biotech and pharmaceutical companies.
Mr. Kazimi holds a B.A. from the University of Texas at Austin and an M.S. from Harvard University.
Kevin Caldwell, Ossium Health CEO, on Cell Therapy, Vertical Integration & Immune Healthspan
Biotech 2050 Podcast
36 minutes 28 seconds
3 months ago
Kevin Caldwell, Ossium Health CEO, on Cell Therapy, Vertical Integration & Immune Healthspan
Synopsis:
From stargazing in rural Tennessee to reimagining the future of immune health, Kevin Caldwell’s journey is anything but conventional. In this episode of Biotech2050, Rahul Chaturvedi speaks with the CEO, Co-Founder & President of Ossium Health about how personal experiences with a reactive healthcare system—and a deep curiosity about the universe—sparked a mission to extend human healthspan through regenerative medicine.
Kevin shares how Ossium built the first scalable bone marrow bank sourced from deceased organ donors—unlocking a powerful, overlooked source for life-saving cell therapies. He discusses Ossium’s fully integrated model, commercialization strategy, and why rigorous company-building must go hand-in-hand with scientific ambition.
The conversation unpacks hard-won lessons from raising $130M+, navigating regulatory pathways, and leading with long-term conviction. A bold vision for transforming cell therapy—and a candid look at the mindset needed to build for impact.
Biography:
As CEO, Co-Founder & President of Ossium Health, Kevin Caldwell has built Ossium from a small startup into a clinical stage bioengineering company. Mr. Caldwell set the company’s mission to improve human health through bioengineering and designed its platform-based model for cellular therapeutics development. Mr. Caldwell has led the company’s successful pursuit, negotiation, and execution of more than 50 business relationships, including 5 successful fundraisings and dozens of supply partnerships, clinical partnerships, and commercial contracts with biopharmaceutical companies. After seven years of strategic engagement and networking, Mr. Caldwell drove the team to successfully secure a transformative federal contract with BARDA (Biomedical Advanced Research and Development Authority) that validates Ossium’s innovative approach. This milestone represents the culmination of persistent relationship-building, targeted proposals, and our unwavering commitment to addressing national biomedical challenges through cutting-edge technology and collaborative partnerships.
Prior to founding Ossium, Mr. Caldwell served as an Engagement Manager at McKinsey’s San Francisco office where he advised clients in the biotechnology and healthcare sectors. His projects ranged from due diligence of acquisition targets in the biotech startup ecosystem to restructuring distressed biopharma companies. Mr. Caldwell led more than 20 engagements with more than a dozen clients, leading teams that advised clients on revenue growth, go to market strategy, and organizational restructuring.
Before McKinsey, Mr. Caldwell served as a Senior Investment Associate at Bridgewater Associates where he did quantitative research for the firm’s global macro investments. Mr. Caldwell studied Physics and Economics at MIT before receiving his JD from Harvard Law School. In addition, he is a member of the Young Presidents Organization (YPO), and a Fellow of the Leaders in Tech Program.
Biotech 2050 Podcast
Synopsis:
Nimbus Therapeutics CEO Abbas Kazimi walks Alok Tayi through the company’s evolving pipeline and playbook for choosing the right risks in a noisy biotech environment. From Werner helicase for MSI-high cancers to a highly selective SIK2 program and GLP-1–adjacent strategies focused on body composition, Abbas details how Nimbus balances rigor, speed, and capital efficiency.
He shares candid lessons from pausing and later resurrecting AMPK beta in partnership with Eli Lilly, the decision to remain modality-agnostic but small-molecule-centric, and the importance of knowing when not to chase the latest fad. Throughout, Abbas returns to a consistent theme: success at Nimbus comes from disciplined target selection, deep collaboration, and a culture that empowers teams to make hard calls in service of patients rather than headlines.
Biography:
Abbas Kazimi is the Chief Executive Officer of Nimbus Therapeutics. Previously, he served as Chief Business Officer, leading the company’s strategic and corporate development efforts while overseeing business operations. Since joining Nimbus in 2014, he has helped raise over $630 million in equity financing and led transactions totaling more than $8 billion.
Notably, Mr. Kazimi spearheaded the $6 billion sale of Nimbus’s TYK2 program to Takeda, the $1.2 billion sale of its NASH (ACC) program to Gilead, and multiple licensing deals exceeding $1.5 billion with partners such as Genentech, Celgene/Roche, and Eli Lilly. Under his leadership, Nimbus has advanced four programs into the clinic, returned over $4 billion to investors, and continues to expand its computational drug discovery and clinical development capabilities.
In 2025, Mr. Kazimi joined the board of Unnatural Products (UNP), a biotech company pioneering orally delivered macrocyclic peptides to tackle previously undruggable targets. He also serves on the Editorial Advisory Board for In Vivo magazine, a leading publication offering strategic insights and analysis of the pharmaceutical, biotechnology, medtech, and consumer health industries. Along with his family, he established the Kazimi Family Endowment for Data Science in Oncology at MD Anderson Cancer Center. This endowment reflects their personal commitment to philanthropy and their vision for revolutionizing cancer treatment through data-driven innovation.
At the core of Mr. Kazimi’s leadership is a deep sense of purpose—one that seeks to change the trajectory of medical diagnoses where options are limited. The ability to give patients, prescribers, and families a new outlook on life is a powerful responsibility—and one he knows the biopharmaceutical sector has the ability to fulfill.
Before Nimbus, he was at Extera Partners, LLC (formerly PureTech Development, LLC), where he provided strategic advisory, supported fundraising, and executed numerous business development transactions. Earlier in his career, he was with JSB-Partners, LP, a specialized investment banking and advisory firm serving biotech and pharmaceutical companies.
Mr. Kazimi holds a B.A. from the University of Texas at Austin and an M.S. from Harvard University.
