Who Owns Mirion Company?

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Who Owns Mirion Technologies?

Understanding Mirion Technologies' ownership is key to grasping its market position and strategic path. As a global leader in radiation detection and measurement, the company plays a vital role in sectors like nuclear power and defense.

Mirion Technologies became a publicly traded entity on the NYSE in October 2021 following a SPAC merger. This transition from private ownership to public listing significantly altered its shareholder landscape.

The ownership of Mirion Technologies is primarily held by institutional investors following its public listing. Key shareholders include investment firms and funds that manage assets on behalf of a broad base of investors. These institutions play a significant role in the company's governance and strategic decisions, influencing its direction in areas such as nuclear energy advancements and medical applications, including products like those detailed in the Mirion PESTEL Analysis. The company, employing around 2,800 people across 12 countries, operates with a focus on protecting people and the environment from radiation hazards.

The ownership of Mirion Technologies does not stem from traditional individual founders. Instead, its origins are linked to the Health Physics Division of Canberra Industries. The pivotal ownership transition occurred in 1999 when Charterhouse Capital Partners, a private equity firm, acquired this division, initiating the path towards Mirion Technologies.

Early Ownership Foundation

Charterhouse Capital Partners provided the initial capital and strategic direction for the spin-off. This private equity firm effectively acted as the foundational owner and early investor in the company's formative years.

Private Equity Investment

Charterhouse Capital Partners made their first investment in Mirion in 2015. This investment preceded the company's public listing and was instrumental in its subsequent development.

Platform Expansion

During Charterhouse's ownership, Mirion underwent substantial platform expansion. This period also saw significant business transformation, including strategic acquisitions.

Diversification Strategy

Strategic acquisitions during the Charterhouse era diversified Mirion's business operations. The company expanded its reach into the medical and life sciences sectors.

Leadership Continuity

Thomas D. Logan has been a continuous leader, serving as CEO since 2005. His extensive tenure has been crucial for the company's strategic direction and growth.

Board Leadership

Thomas D. Logan assumed the role of Chairman of the Board in February 2025. This appointment underscores his deep involvement and leadership within the company's governance.

Thomas D. Logan, while not a founder in the traditional sense of establishing the initial entity, has played a pivotal role in Mirion's trajectory. His leadership as Chief Executive Officer since 2005 and his subsequent appointment as Chairman of the Board in February 2025 highlight his significant influence. Logan's career, which includes over 30 years in the energy industry and experience in contract manufacturing and consumer products, has been instrumental in shaping Mirion's strategic direction and operational success, as detailed in the Growth Strategy of Mirion.

Key Ownership and Leadership

Mirion Technologies' ownership structure evolved from a division acquisition by private equity. Key figures and entities have guided its transformation and expansion over the years.

• Charterhouse Capital Partners initiated ownership in 1999.
• Charterhouse invested significantly in 2015, supporting growth.
• Thomas D. Logan has served as CEO since 2005 and Chairman since February 2025.
• Logan's extensive industry experience has been vital to the company's strategic development.

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Mirion Technologies' ownership journey saw a significant shift with its public debut in October 2021, moving from a privately held entity to a publicly traded company. This transition was facilitated by a business combination with a SPAC, injecting substantial capital and altering its shareholder base.

Before its public offering, Mirion Technologies was primarily owned by Charterhouse Capital Partners LLP, which had been a significant investor since 2015. The company's transition to a public entity on October 21, 2021, involved a business combination with GS Acquisition Holdings Corp II (GSAH). This strategic move generated approximately $604 million from GSAH trust proceeds, $900 million from a private placement of common stock (PIPE), and $830 million from senior secured term loan financing. A substantial $1.3 billion of these funds were allocated to existing Mirion stockholders, including Charterhouse, which maintained a stake of about 12% in Mirion's common stock following the transaction. This event marked a pivotal moment in Mirion Technologies' company history ownership, setting the stage for its current market presence.

Key Institutional Shareholders in Mirion Technologies

As of recent filings, institutional investors are the dominant force in Mirion Technologies' ownership structure. These entities play a crucial role in the company's financial landscape and strategic direction.

• Vanguard Group: Holds 23 million shares, valued at approximately $337 million as of March 2025.
• BlackRock, Inc.: Owns 16 million shares, with a valuation of around $234 million in March 2025.
• Janus Henderson Group: Possesses 8.6 million shares, valued at approximately $126 million as of March 2025.
• Other significant institutional investors, including T. Rowe Price Investment Management Inc. and Dimensional Fund Advisors LP, have also increased their holdings in the first quarter of 2025, contributing to the overall institutional ownership which reached 86.05% by June 2025. This robust institutional backing provides Mirion Technologies with capital for its growth and innovation initiatives. For a deeper dive into the company's past, explore the Brief History of Mirion.

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The Board of Directors at Mirion Technologies is instrumental in guiding the company's strategic direction and ensuring robust corporate governance. As of February 2025, Thomas D. Logan holds the dual roles of CEO and Chairman of the Board. The board is comprised of individuals with diverse backgrounds, including operational leadership and experience in various industrial and healthcare sectors, aiming to provide comprehensive oversight.

Mirion Technologies adheres to a one-share-one-vote principle for its common stock, meaning each share of common stock carries equal voting rights. As of March 17, 2025, the company had 225,195,204 shares of Class A common stock and 6,379,885 shares of Class B common stock outstanding, with both classes voting as a single unit. Institutional investors held approximately 78.51% of the company's stock as of August 2025, indicating a significant influence on governance decisions through their collective holdings. The decision to combine the CEO and Chairman roles, effective February 2025, was made by the Nominating and Corporate Governance Committee, deemed to be in the best interest of the company and its stakeholders.

Mirion Technologies Ownership and Governance

Understanding Mirion Technologies ownership structure is key to grasping its governance framework. The board's composition reflects a commitment to diverse expertise, crucial for effective oversight.

• Mirion Technologies operates under a one-share-one-vote system.
• Institutional investors hold a substantial portion of the company's shares.
• The CEO also serves as the Chairman of the Board.
• Board members bring varied experience from industrial and healthcare sectors.
• This structure influences Mirion Technologies company history ownership.

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Mirion Technologies has undergone significant financial restructuring and strategic acquisitions in the past 12-18 months. These moves aim to strengthen its market position and optimize its capital structure, reflecting a dynamic approach to growth and operational efficiency.

Recent developments indicate a strategic focus on financial health and expansion. Mirion Technologies completed a $400 million convertible notes offering and refinanced its Term Loan B in the second quarter of 2025. These actions build upon 2024 efforts to simplify its capital structure, including warrant redemption and founder share vesting. The acquisition of Certrec for $81 million in July 2025 further bolsters its offerings in the nuclear power sector.

Insider Trading Activity

Key executives, including CEO Thomas D. Logan and Director Lawrence Kingsley, sold shares in August and May 2025 respectively, totaling over $19 million. These transactions were conducted under pre-arranged 10b5-1 trading plans.

Institutional Investor Trends

Despite insider sales, institutional investors are increasing their stakes. Firms like Lord Abbett & CO. LLC, T. Rowe Price Investment Management Inc., and Brown Advisory Inc. have expanded their holdings, with institutional shareholding reaching 86.05% as of June 2025.

Strategic Acquisitions and Financial Performance

The acquisition of Certrec for $81 million in July 2025 enhances Mirion's nuclear power capabilities. The company reported a 7.6% revenue increase to $222.9 million in Q2 2025, with adjusted EPS of $0.11, leading to an upward revision of full-year 2025 guidance.

Market Position and Growth Outlook

Mirion's proactive strategy aligns with growth in nuclear power and cancer care sectors. The company's financial performance and M&A activities suggest a strong trajectory, positioning it to capitalize on favorable market conditions. Understanding this landscape is crucial when examining the Competitors Landscape of Mirion.

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