Heidi Mayon is a partner in Goodwin's Technology and Life Sciences groups. Ms. Mayon's practice focuses on all areas of corporate and securities law, with a focus on capital market transactions. Ms. Mayon represents a full range of corporate clients on a wide variety of matter, including company formations, venture financings, M&A transactions, capital market transactions, corporate governance and advising boards of directors. She works with clients across a broad range of industries, including consumer, software, internet, life sciences, retail, telecommunications, hardware, and energy and clean technology.

Areas of Practice
Domaines D’Expertise





Ms. Mayon’s representative private company clients include Peloton*, Poshmark, Sophie’s Kitchen and BIOMILQ.

Ms. Mayon’s transactional experience includes the following representations:

  • PTK Acquisition Corp., a special purpose acquisition company, in its $100 million initial public offering
  • Open Lending in its combination with Nebula Acquisition Corporation, a special purpose acquisition company sponsored by True Wind Capital
  • Confidentially filed special purpose acquisition company in its $300 million initial public offering
  • Axon Enterprises in its $275 million follow on offering
  • J.P. Morgan in the $125 million follow on offering of Penumbra
  • ARMO BioSciences in its $1.6 billion sale to Lily*
  • ARMO BioSciences in its $128 million initial public offering*
  • BofA Merrill Lynch and J.P. Morgan in the $70 million initial public offering of Cardlytics*
  • Arcus Biosciences in its $120 million initial public offering*
  • True North Therapeutics in its $400 million sale to Bioverativ*
  • Theravance in its 144A offering of $200 million of convertible notes
  • Theravance in its $100 million follow on offering
  • Morgan Stanley, J.P. Morgan and Allen & Co in the $225 million initial public offering of Cloudera*
  • Morgan Stanley and Citibank in the $332 million initial public offering of Despegar*
  • Violin Memory in its $162 million initial public offering*
  • Envivio in its $70 million initial public offering and subsequent sale*
  • Renewable Energy Group in its $72 million initial public offering and $125 million convertible note offering*
  • Veracyte in its $65 million initial public offering*
  • Meru Networks in its $65 million initial public offering and subsequent sale*
  • Atheros in its $126 million initial public offering*

* Denotes experience prior to joining to Goodwin.

Professional Experience

Prior to joining Goodwin in 2018, Ms. Mayon was a partner at Gunderson Dettmer and Pillsbury Winthrop.


Member, Law360 Capital Markets Advisory Board

In The News









University of San Francisco School of Law
University of San Diego



Get In Touch
Our clients rely on us for world-class advisory services, counsel on complex transactional work and high-stakes litigation. Specializing in matters involving the financial, life sciences, private equity, real estate, and technology industries, we use a collaborative, cross-disciplinary approach to resolve our clients’ most challenging issues. To find out more, please contact us.

Unsere Kunden verlassen sich auf unsere erstklassige Beratung, vor allem im Hinblick auf komplexe Transaktionen und High-Stakes-Prozesse. Spezialisiert auf Angelegenheiten der Finanz-, Life-Sciences-, Private-Equity-, Immobilien-und Technologie-Branchen, verwenden wir einen kooperativen und interdisziplinären Ansatz, um Fragen unserer Kunden auch in extremen Spezialsituationen einer Lösung zuzuführen. Sie wollen mehr erfahren? Kontaktieren Sie uns gerne.

Nos équipes interviennent aux côtés de nos clients, industriels, fonds d’investissement, startups, institutions financières et dirigeants, dans le cadre de transactions et de contentieux complexes, et apportent des conseils de tout premier plan dans les secteurs financiers, des Sciences de la Vie, du Private Equity, de l’immobilier et des technologies. Nous traitons les dossiers juridiques de manière intègre, ingénieuse, souple et audacieuse pour répondre efficacement aux enjeux propres à chacun de nos clients, quels que soient la taille de l’opération et le secteur d’activité. Pour en savoir plus, contactez-nous.


Search Other Lawyers
Recherche par Pratique