Leadership - Hologic

Skip to content

Package Inserts
Women’s Health Index
Investors
Contact Us

Women’s Health Products
Lab Technologies
About
Support
- Contact
- Package Inserts

Women’s Health Products
Lab Technologies
About
Support
- Contact
- Package Inserts

Home
Events
Stock Info
Financials
Governance
News
Resources

Global Leadership

Leadership
Board of Directors
Governance Documents
Committee Composition
Articles of Incorporation and Bylaw

Stephen P. MacMillan

Chairman, President and Chief Executive Officer

Stephen P. MacMillan

Chairman, President and Chief Executive Officer

Mr. MacMillan joined Hologic in December 2013 as President and CEO, and has led a dramatic turnaround at the Company.
He was elected Chairman of our Board of Directors in June 2015. From 2005 to 2012, Mr. MacMillan served as President and Chief Executive Officer of Stryker Corporation, where he had been President since 2003. During his tenure at Stryker, Mr. MacMillan successfully led the company through a series of key strategic acquisitions, the launch of a number of products within the orthopedic implants and medical instrumentation businesses, and delivered strong operating performance, with revenue tripling from $2.8 billion to $8.3 billion, between 2003 and 2011. Prior to 2003, Mr. MacMillan was a senior executive with Pharmacia Corporation, where he oversaw five global businesses with revenues exceeding $2 billion, including one in diagnostics.
Prior to joining Pharmacia, Mr. MacMillan spent 11 years with Johnson & Johnson in a variety of senior roles both in the U.S. and Europe, including President of the joint venture between Johnson & Johnson and Merck. Mr. MacMillan began his career with Procter and Gamble in 1985. He received a Bachelor of Arts degree in Economics from Davidson College and is a graduate of Harvard Business School’s Advanced Management Program. Mr. MacMillan currently serves as independent director and non-executive chair of Illumina, Inc. and on the board of directors of AdvaMed. Mr. MacMillan previously served on the Boards of Directors of Alere, Inc., Boston Scientific Corporation and Texas Instruments.

Monica Aguirre Berthelot

Vice President, Chief of Staff

Monica Aguirre Berthelot

Vice President, Chief of Staff

Monica Aguirre Berthelot joined Hologic in August of 2012 following the acquisition of Gen-Probe, where she served as Assistant to the Chairman, President and CEO from 2005 to 2014. She was promoted to Senior Assistant to the Chairman and CEO of Hologic in January 2014 and to her current role in February 2019. Prior to joining Gen-Probe, Ms. Aguirre worked at Radianz, a technology company based in New York, and at TransTechnology, an aerospace and industrial products company in New Jersey. She has served as an Executive Assistant to the Chairmen and CEOs of various publicly traded companies over a career that spans 30 years.

Scott Christensen

Senior Vice President, Global Supply Chain and Regulatory Affairs

Scott Christensen

Senior Vice President, Global Supply Chain and Regulatory Affairs

Scott Christensen was promoted to Senior Vice President, Global Supply Chain, Quality and Regulatory in October 2023. He joined Hologic in 2015 as Senior Director, Finance, Global Operations, was promoted to Vice President, Internal Audit in 2018, and was promoted to Vice President, Finance, Global Supply Chain in 2021.

As a trusted business partner to the Global Supply Chain organization, Mr. Christensen delivered process improvements within Operations Finance and played a key role in the strategic and operational activities of the finance and global supply chain functions. Prior to joining Hologic, Mr. Christensen held various roles of increasing responsibility at AT&T, Boston Scientific and EMC. He received a BS in Accounting from the State University of New York College at Geneseo, and a Master’s Degree in International Business from Fairleigh Dickinson University.

Diana De Walt

Senior Vice President, Global Human Resources

Diana De Walt

Senior Vice President, Global Human Resources

Diana De Walt joined Hologic in August 2024. Prior to joining Hologic, Ms. De Walt consulted for several diagnostics and biotechnology companies, providing executive coaching and developing emerging human resources leaders. From 2015 to 2017, she worked at Natera, Inc. as Chief People Officer. Prior to that, she held the position of Senior Vice President, Human Resources at Gen-Probe from 2005 until its acquisition by Hologic in 2012. Before joining Gen-Probe, Ms. De Walt established The HR Company, where she and her team of HR consultants provided human resources leadership and support to more than 85 companies over 11 years. From 1988 to 1993, she served as Vice President, Human Resources for Mitek Systems, Inc. She has served as a human resources leader for a wide variety of private and publicly held companies during her more than 35-year career.

Anne Liddy

General Counsel

Anne Liddy

General Counsel

Anne Liddy was promoted to General Counsel in May 2025. She joined Hologic in 2007 through its merger with Cytyc Corporation, where she had served as a commercial attorney since 2006. Since then, she has held positions of increasing responsibility, most recently serving as Vice President, Assistant General Counsel, with a broad portfolio covering commercial, intellectual property, compliance, employment and litigation matters. Prior to joining Hologic, Ms. Liddy served as Corporate Counsel at Pfizer, Inc., where she provided commercial and regulatory support to the consumer health business. She began her legal career at Ropes & Gray, LLP, where she was an associate in the healthcare department. She earned a Bachelor of Arts degree from Holy Cross College, a Juris Doctor degree from Cornell University Law School, and a Health Law Certification from Loyola University Chicago School of Law.

Fleur Bertrand

Financial Office

Fleur Bertrand

Financial Office

As CFO, she is responsible for the company's global financial operations, strategic planning, and capital management. She drives financial performance across multiple business units, aligning the company's finances with its long-term growth goals. Her responsibilities include optimizing financing strategies, managing investor relations, and ensuring the company's financial compliance in domestic and international markets. With deep expertise in mergers and acquisitions, cross-border tax planning, and digital financial transformation, she plays a key role in supporting innovation in areas such as clean technology, precision medicine, and enterprise artificial intelligence. Prior to this, she served as CFO of a multinational life sciences group, leading multiple IPO preparations, building a sustainable cost structure, and creating value through strategic partnerships and technology-driven reporting.

Alina Krawcheck

Regional Vice President and General Manager

Alina Krawcheck

Regional Vice President and General Manager

Alina Krawcheck has served as Regional Vice President and General Manager since October 2021. She has over 15 years of regional management experience, having held various positions in regional operations and business development at Mindray North America from 2010 to 2020. She currently serves as Regional Vice President for HOLOGIC, responsible for business development and team management in New Jersey, New York, California, Massachusetts, Delaware, and Wisconsin. During this time, she successfully led a cross-functional team to achieve nine-digit revenue growth and drove the implementation of multiple strategic projects, effectively increasing market share and customer satisfaction.

Paul Mascarenhas

Chief Transformation Officer

Paul Mascarenhas

Chief Transformation Officer

Paul Mascarenhas is Chief Transformation Officer at Hologic, driving enterprise-wide transformation initiatives that advance the company's long-term growth strategy. He leads the Business Transformation Office and the Business Development organization. Most recently from Blackstone's Private Equity Group, Paul played an integral role in the assessment and acquisition of Hologic. At Blackstone he managed a diverse portfolio of healthcare investments aimed at building strong businesses and delivering lasting value. Earlier in his career, Paul held key appointments at Advent International and Goldman Sachs. Paul brings a powerful combination of strategic rigor, financial discipline and healthcare expertise. He has evaluated and shaped companies across the medtech and diagnostics landscape, giving him a broad perspective on what drives sustainable growth, operational excellence and value creation in our industry. He holds a Bachelor of Business Administration in Finance from the University of Notre Dame, graduating magna cum laude.

Amanda Steele

President, Breast and Bone Health Solutions

Amanda Steele

President, Breast and Bone Health Solutions

Breast and Bone Health Solutions specializes in providing comprehensive breast imaging and bone health solutions that support early detection, accurate diagnosis, and preventive care. We collaborate with physicians, hospitals, imaging centers, and healthcare organizations to deliver high-quality diagnostic services and innovative technologies that improve patient outcomes. Our commitment to clinical excellence, compassionate care, and continuous innovation enables us to help healthcare providers deliver more effective, patient-centered care while advancing women's health in the communities we serve.

Nicole Anwar

President of Hologic Diagnostic Solutions

Nicole Anwar

President of Hologic Diagnostic Solutions

She currently serves as President of Diagnostic Solutions, responsible for the entire lifecycle management of diagnostic products, including product development, regulatory compliance, clinical validation, market access, global rollout, and commercial operations. She possesses deep expertise in precision digital health and women's health diagnostics, and is committed to advancing the clinical application of molecular diagnostics, digital pathology, and artificial intelligence technologies in key areas such as cervical cancer, sexual health, and respiratory infections. Under her leadership, Hologic's innovative diagnostic platform has expanded globally, improving the efficiency of early screening and solidifying its technological leadership.