Mark Windfeld-Hansen

Senior Counsel
mwindfeldhansen@cooley.com
Full contact info

Almost every deal has tax implications. I work side by side with the transaction team from the outset.

About Mark

Mark Windfeld-Hansen has 20+ years of experience as a tax lawyer. Prior to joining Cooley in 2008, Mark was a shareholder of Heller Ehrman and member of its Venture Law Group. Before its merger with Heller Ehrman, he was a director of Venture Law Group and head of its tax group. Prior to joining VLG, he was a partner and co-chairman of Morrison & Foerster's tax department.

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Experience

Machinify Announces Acquisition by New Mountain Capital

Machinify Announces Acquisition by New Mountain Capital

January 16, 2025

Cooley advised Machinify, a provider of artificial intelligence-powered software transforming healthcare payments, on its definitive agreement to be acquired by New Mountain Capital.

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Related contacts

Josh Seidenfeld
Partner, Palo Alto
Garth Angelo Osterman
Partner, San Francisco
Maureen Nagle
Special Counsel, Washington, DC
Nicolas Francis
Associate, San Francisco
Katie Rosati
Associate, Seattle
Mark Windfeld-Hansen
Senior Counsel, Palo Alto
David Dalton
Associate, Santa Monica
Steve Flores
Partner, Chicago
Kathy O'Neill
Partner, Washington, DC
Amanda Griggs
Associate, New York
Alexis Finkelberg Bortniker
Partner, San Diego
Ross Eberly
Partner, Santa Monica
Charles Haley
Partner, Palo Alto
Ryan Montgomery
Partner, Boston
Jonathan Rivinus
Partner, Colorado
Mark Medearis
Senior Counsel, Palo Alto
Sharon Connaughton
Special Counsel, Washington, DC
Alexander Ellebracht
Associate, Palo Alto
Josh Himmelstern
Associate, San Diego
Jessica Li
Associate, Palo Alto
Alison L. Tong
Associate, San Francisco
Novak Topalovic
Associate, San Diego
Rubin Waranch
Associate, Colorado
Raquel Zepeda
Associate, San Francisco
Zheng Zhou
Associate, Palo Alto
Patricia Myers
Paralegal Specialist, Colorado
Melanie Yuvienco
Paralegal Specialist, Palo Alto
Brian Mitchell
Transactional Quantitative Analyst, San Diego

Related Practices & Industries

Digital Health
Artificial Intelligence
Mergers and Acquisitions
Technology Transactions
Healthcare
Life Sciences
Life Sciences and Healthcare Regulatory
Compensation and Benefits
Emerging Companies
Antitrust and Competition
CooleyREG
Labor and Employment
Tax

Takara Bio Announces Acquisition of Curio Bioscience

Takara Bio Announces Acquisition of Curio Bioscience

January 15, 2025

Cooley advised Takara Bio, a global biotechnology and life sciences company headquartered in Shiga, Japan, on its acquisition of Curio Bioscience, a pioneering company in the field of spatial genomics.

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Related contacts

Laura M. Medina
Partner, Colorado
Charity Williams
Partner, San Diego
Dr. Bill Christiansen
Partner, Seattle
Meredith Klionsky
Special Counsel, Washington, DC
John Forrest
Associate, Boston
Jeff Gutkin
Partner, San Francisco
Jonathan Rivinus
Partner, Colorado
David Walsh
Senior Counsel, Reston
Mark Windfeld-Hansen
Senior Counsel, Palo Alto
Bryan Berman
Special Counsel, Colorado
Stacey A. Bradford
Special Counsel, Washington, DC
Stefan Cohen
Associate, Washington, DC
Eileen Leman
Associate, Los Angeles
Patricia Myers
Paralegal Specialist, Colorado

Related Practices & Industries

Mergers and Acquisitions
Life Sciences
Healthcare
Biotechnology
Life Sciences Corporate Partnering and Licensing
Intellectual Property
Compensation and Benefits
Emerging Companies
Labor and Employment
Patent Counseling and Prosecution
Commercial Litigation
Tax
Technology Transactions

Machinify Announces Acquisition by New Mountain Capital

Machinify Announces Acquisition by New Mountain Capital

January 10, 2025

Cooley advised Machinify, a provider of artificial intelligence-powered software transforming healthcare payments, on its definitive agreement to be acquired by New Mountain Capital.

Related contacts

Josh Seidenfeld
Partner, Palo Alto
Garth Angelo Osterman
Partner, San Francisco
Maureen Nagle
Special Counsel, Washington, DC
Nicolas Francis
Associate, San Francisco
Katie Rosati
Associate, Seattle
Mark Windfeld-Hansen
Senior Counsel, Palo Alto
David Dalton
Associate, Santa Monica
Steve Flores
Partner, Chicago
Sean O'Neill
Partner, Santa Monica
Amanda Griggs
Associate, New York
Alexis Finkelberg Bortniker
Partner, San Diego
Ross Eberly
Partner, Santa Monica
Charles Haley
Partner, Palo Alto
Ryan Montgomery
Partner, Boston
Jonathan Rivinus
Partner, Colorado
Mark Medearis
Senior Counsel, Palo Alto
Sharon Connaughton
Special Counsel, Washington, DC
Alexander Ellebracht
Associate, Palo Alto
Josh Himmelstern
Associate, San Diego
Jessica Li
Associate, Palo Alto
Alison L. Tong
Associate, San Francisco
Novak Topalovic
Associate, San Diego
Rubin Waranch
Associate, Colorado
Raquel Zepeda
Associate, San Francisco
Zheng Zhou
Associate, Palo Alto
Patricia Myers
Paralegal Specialist, Colorado
Melanie Yuvienco
Paralegal Specialist, Palo Alto
Brian Mitchell
Transactional Quantitative Analyst, San Diego

Related Practices & Industries

Digital Health
Artificial Intelligence
Mergers and Acquisitions
Technology Transactions
Healthcare
Life Sciences
Life Sciences and Healthcare Regulatory
Compensation and Benefits
Emerging Companies
Antitrust and Competition
CooleyREG
Labor and Employment
Tax

H1 Acquires Ribbon Health

H1 Acquires Ribbon Health

January 8, 2025

Cooley advised H1, a global healthcare data technology company, on its acquisition of Ribbon Health.

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Related contacts

Jeff Laretto
Partner, New York
Garth Angelo Osterman
Partner, San Francisco
Nathan Baum
Special Counsel, New York
Stephanie Gentile
Partner, New York
Ryan Montgomery
Partner, Boston
Sarah Buchik
Associate, New York
Sela Dougherty
Associate, New York
Shaun (Tianjie) Wang
Associate, New York
Megan Browdie
Partner, Washington, DC
Patrick Flanagan
Partner, New York
Michael Klein
Partner, New York
Len Jacoby
Partner, New York
Kristen Mathews
Partner, New York
Phil Mitchell
Partner, New York
David Navetta
Partner, Colorado
Gerard O'Shea
Partner, New York
Mark Windfeld-Hansen
Senior Counsel, Palo Alto
Stacey A. Bradford
Special Counsel, Washington, DC
Julia R. Brinton
Special Counsel, Washington, DC
Sharon Davidov
Associate, New York
Jeremy M. Exelbert
Associate, New York
Michael Gladstone
Associate, New York
Anthony Hajj
Associate, New York
Gary Warren Hunt III
Associate, Washington, DC
Sunny J. Levine
Associate, Colorado
Amanda Pacheco
Associate, Palo Alto
Liz Paisner
Associate, New York
Katharina Schwarz
Associate, New York
Robert Warshaw
Associate, New York
Leanne Andrepont
Senior Trademark Paralegal
Patricia Myers
Paralegal Specialist, Colorado

Related Practices & Industries

Mergers and Acquisitions
Technology Transactions
Healthcare
Life Sciences
Life Sciences and Healthcare Regulatory
Tax
Debt Finance
Compensation and Benefits
Labor and Employment
Emerging Companies
Technology
CooleyREG
Cyber/Data/Privacy
Antitrust and Competition
Business Restructuring
Trademark, Copyright and Advertising
Patent Counseling and Prosecution

Inmagene Biopharmaceuticals Announces Merger With Ikena Oncology

Inmagene Biopharmaceuticals Announces Merger With Ikena Oncology

December 23, 2024

Cooley advised Inmagene Biopharmaceuticals, a privately held, global clinical-stage biotechnology company developing novel therapeutics for immunological and inflammatory diseases, on its definitive merger agreement with Ikena Oncology (Nasdaq: IKNA).

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Related contacts

Lila Hope
Partner, Palo Alto
Rama Padmanabhan
Partner, San Diego
Patrick Loofbourrow
Partner, Singapore
Asa Henin
Partner, San Diego
Matthew D. Silverman
Special Counsel, Santa Monica
Lindsey O'Crump
Associate, Washington, DC
Brittany K. Wightman
Associate, San Diego
Jiqiang Lin
Associate, New York
Leina Verrier
Associate, Santa Monica
Ross Eberly
Partner, Santa Monica
Stephanie Gentile
Partner, New York
Christopher Kimball
Partner, Washington, DC
Xander Lee
Partner, Santa Monica
Phil Mitchell
Partner, New York
Howard Morse
Senior Counsel, Washington, DC
Alessandra Murata
Partner, Palo Alto
Jean Park
Partner, New York
Aaron Pomeroy
Partner, Colorado
Michelle Garcia Schulman
Partner, Reston
Ellie Seber
Partner, Santa Monica
Marty Schenker
Senior Counsel , San Francisco
Mark Windfeld-Hansen
Senior Counsel, Palo Alto
Andrew Epstein
Special Counsel, Seattle
Stella Sarma
Special Counsel, Brussels
Karen Tsai
Special Counsel, Washington, DC
Bin Wang
Special Counsel, Palo Alto
Robert Eisenbach
Of Counsel, San Francisco
Ajay Athavale
Associate, San Francisco
Rajdeep Roger Bains
Associate, San Diego
Julia R. Brinton
Special Counsel, Washington, DC
Elizabeth Caruso
Associate, New York
Adrienne Beaudoin Deshmukh
Associate, Reston
Jeremy M. Exelbert
Associate, New York
Daniel Gillon
Associate, San Diego
Zack Gong
Associate, Shanghai
Rick Jantz
Associate, Santa Monica
Wyatt Kernell
Associate, Colorado
Rebeca Kinslow
Associate, San Diego
Hilda Li
Associate, Hong Kong
Lunga Su
Associate, Shanghai
Novak Topalovic
Associate, San Diego
Tania Soris
Associate, New York
Christine Tse
Associate, New York
Monica Xu
Special Counsel, Shanghai
Sai Yarramalla
Associate, Palo Alto
Andy Zachrich
Associate, San Diego
Zheng Zhou
Associate, Palo Alto
Patricia Myers
Paralegal Specialist, Colorado
Jake Ironfield
Transactional Quantitative Analyst, New York

Related Practices & Industries

Mergers and Acquisitions
Life Sciences
Biotechnology
Healthcare
Public Companies
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Admissions and credentials

California

Rankings and accolades

Best Lawyers in America: Tax Law

Legal 500 US: Domestic Tax (2015)

PATH Act Gives Tax Benefits to Emerging Growth Companies and Investors

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