Lantheus Executive and Leadership Team

October, 2026

Leadership Overview

Lantheus has 6 executives leading key functions including strategy, information technology, financial management, corporate communications, human resources, and legal administration.

Focused on advancing medical imaging and diagnostic precision, Lantheus delivers innovative healthcare technology solutions that empower clinicians to identify, treat, and monitor complex diseases across global markets.

Leadership Roles at Lantheus

  • Interim Chief Executive Officer & Executive Chairperson - Mary Anne Heino
  • Chief Financial Officer & Treasurer - Robert Marshall
  • Chief Information Officer - Lee Howe
  • Chief of Staff & Vice President, Corporate Communications - Linda Lennox
  • Chief People Officer - Jamie Spaeth
  • Chief Administrative Officer, General Counsel & Corporate Secretary - Daniel Niedzwiecki
  • Mary Anne Heino - Interim Chief Executive Officer & Executive Chairperson

    Mary Anne Heino, the Interim Chief Executive Officer & Executive Chairperson at Lantheus, directs the overarching strategic vision and operational governance of the organization. Overseeing the integration of medical imaging technologies and targeted therapeutics, the Interim Chief Executive Officer & Executive Chairperson ensures alignment between clinical innovation and long-term shareholder value. This leadership role involves managing the Board of Directors while driving expansion across North American and international markets. By prioritizing the development of diagnostic tools that enhance patient outcomes, Mary Anne Heino maintains the company's competitive edge in the healthcare technology sector. Heino fosters a culture of excellence, ensuring that all corporate initiatives support the mission of providing clinicians with advanced software and diagnostic capabilities. Ultimately, the Interim Chief Executive Officer & Executive Chairperson secures the stability and growth trajectory of the entire enterprise.

    Robert Marshall - Chief Financial Officer & Treasurer

    Robert Marshall, the Chief Financial Officer & Treasurer at Lantheus, manages the fiscal health and capital allocation strategies required to sustain medical imaging research and development. Overseeing financial reporting, treasury functions, and investor relations, the Chief Financial Officer & Treasurer ensures the company maintains a robust balance sheet to support ongoing expansion. This leadership role involves coordinating with the Board of Directors to evaluate investment opportunities in targeted therapeutics and diagnostic software. By optimizing capital structure and managing global financial risks, Robert Marshall provides the resources necessary for sustained innovation. Marshall drives efficiency across all business units, ensuring that financial performance aligns with the strategic goals of the organization. Through rigorous fiscal oversight, the Chief Financial Officer & Treasurer secures the long-term viability of the company's diverse product portfolio in the competitive healthcare market.
    Robert Marshall

    Lee Howe - Chief Information Officer

    Lee Howe, the Chief Information Officer at Lantheus, architects the digital infrastructure and data security frameworks necessary for high-stakes medical imaging operations. Managing the deployment of artificial intelligence solutions and enterprise software, the Chief Information Officer ensures that clinicians receive reliable, real-time diagnostic data. This role involves overseeing global IT operations across Massachusetts, New Jersey, Canada, and Sweden to maintain seamless connectivity and system integrity. By modernizing the technological backbone of the company, Lee Howe directly supports the rapid delivery of diagnostic tools to healthcare providers. Howe drives digital transformation initiatives that optimize internal workflows and enhance the security of sensitive patient information. Through the implementation of scalable cloud systems, the Chief Information Officer enables the organization to maintain its position as a leader in healthcare technology innovation.
    Lee Howe

    Linda Lennox - Chief of Staff & Vice President, Corporate Communications

    Linda Lennox, the Chief of Staff & Vice President, Corporate Communications at Lantheus, directs internal and external messaging strategies to reinforce the company's reputation as a pioneer in medical imaging. Overseeing corporate branding and stakeholder engagement, the Chief of Staff & Vice President, Corporate Communications ensures that the mission of empowering clinicians remains central to all public discourse. This role involves managing executive communications and facilitating cross-departmental alignment to streamline organizational objectives. By crafting narratives that highlight the impact of diagnostic and therapeutic innovations, Linda Lennox strengthens the company's market presence. Lennox coordinates with leadership to ensure consistent messaging across global operations, from the headquarters in Massachusetts to international offices. Through strategic communication planning, the Chief of Staff & Vice President, Corporate Communications builds trust with investors, healthcare providers, and the broader medical community.

    Jamie Spaeth - Chief People Officer

    Jamie Spaeth, the Chief People Officer at Lantheus, drives talent acquisition, organizational development, and employee engagement strategies to support the company's healthcare technology mission. Overseeing human resources operations across all global locations, the Chief People Officer ensures that the workforce possesses the specialized skills required to advance medical imaging and diagnostic tools. This role involves designing performance management systems and fostering an inclusive culture that attracts top-tier talent in the pharmaceutical and technology sectors. By aligning human capital initiatives with business growth objectives, Jamie Spaeth enables the organization to scale effectively. Spaeth manages leadership development programs that prepare the next generation of innovators to tackle complex disease identification challenges. Through the implementation of comprehensive benefits and professional growth opportunities, the Chief People Officer maintains a high-performing team dedicated to enhancing patient care through advanced technology.
    Jamie Spaeth

    Daniel Niedzwiecki - Chief Administrative Officer, General Counsel & Corporate Secretary

    Daniel Niedzwiecki, the Chief Administrative Officer, General Counsel & Corporate Secretary at Lantheus, directs legal strategy, regulatory compliance, and corporate governance frameworks. Overseeing the protection of intellectual property related to medical imaging and diagnostic software, the Chief Administrative Officer, General Counsel & Corporate Secretary ensures that all operations adhere to stringent healthcare regulations. This role involves managing complex legal matters and providing counsel to the Board of Directors on governance and risk management. By navigating the regulatory landscape across North America and Europe, Daniel Niedzwiecki facilitates the smooth introduction of new diagnostic tools to the market. Niedzwiecki drives administrative efficiency, ensuring that corporate policies support the company's commitment to innovation and patient safety. Through meticulous legal oversight, the Chief Administrative Officer, General Counsel & Corporate Secretary mitigates operational risks and upholds the highest standards of corporate integrity.
    Daniel Niedzwiecki

    Explore Leadership Teams in Healthcare Services

    Frequently Asked Questions Regarding Lantheus Top Executives and Leadership Team

    Who leads Lantheus?
    Lantheus is led by Mary Anne Heino (Interim Chief Executive Officer & Executive Chairperson), along with executives such as Robert Marshall (Chief Financial Officer & Treasurer) and Lee Howe (Chief Information Officer).
    Who is part of Lantheus’s executive team?
    The executive team of Lantheus includes leaders such as Mary Anne Heino (Interim Chief Executive Officer & Executive Chairperson), Robert Marshall (Chief Financial Officer & Treasurer), Lee Howe (Chief Information Officer) and other senior executives.
    How many executives does Lantheus have?
    Lantheus has 6 executives leading key business areas.
    What roles are included in Lantheus’s leadership team?
    The leadership team of Lantheus includes roles such as Interim Chief Executive Officer & Executive Chairperson, Chief Financial Officer & Treasurer, Chief Information Officer, Chief of Staff & Vice President, Corporate Communications, Chief People Officer.