Peter K. Osborn


Osborn, Peter K.
Peter K. Osborn represents private companies with respect to corporate law matters. He advises clients on a wide array of legal issues, including formation, corporate governance, venture capital financings and mergers and acquisitions.

Mr. Osborn counsels technology and life sciences companies in a broad range of industries. Representative clients include 3Play Media Inc., Casa Systems Inc., Daktari Diagnostics Inc., Isabella Products Inc. and Aquanta Inc. Learn more about Mr.Osborn's practice and how he can support your startup on

Prior to joining WilmerHale, Mr. Osborn was an associate at a firm in New York, where his practice focused on structured finance.

Honors & Awards

  • Civil Rights Recognition Award Recipient from the Lawyers’ Committee for Civil Rights Under Law of the Boston Bar Association (2012)

Publications & News


April 13, 2018

WilmerHale Counsels Zaius in $30M Series B Funding

On April 12, 2018, Zaius, the CRM built for B2C marketers, announced it raised $30 million in a Series B investment round led by Insight Venture Partners. Previous investors Matrix Partners, Underscore VC and Leaders Fund also participated in the round, bringing its total funding to $50.8 million.

January 23, 2018

Flywire Expands Global Payments Platform with the Addition of OnPlanU and OnPlan Health

On January 18, 2018, WilmerHale client Flywire, a provider of global payment and receivables solutions for education, healthcare and business, announced the acquisition of OnPlan Holdings LLC, the parent company of OnPlanU and OnPlan Health.

January 23, 2018

WilmerHale Represents Skyword in Raising $25M to Fuel Growth and Market Expansion

Skyword, the leading content marketing software and services company, announced that it has raised $25 million in growth equity from Rho Acceleration, a division of Rho Capital Partners.

April 28, 2017

2017 Venture Capital Report

The 2017 Venture Capital Report offers an in-depth US venture capital market review and outlook, including industry and regional breakdowns, as well as a look at the following issues: steps startups should take now if they plan to secure a Series A round in 2017; common structures for management carve-out plans; best practices for private companies setting option exercise prices; the benefits of investing in qualified small business stock; and trends in venture capital financing terms, convertible debt terms and VC-backed company M&A deal terms.

February 9, 2017

Peter Osborn Recognized With Corporate Law Client Choice Award

The awards recognize partners around the world who stand apart for the excellent client service they provide.

August 10, 2016

WilmerHale Advises Orbitera in Acquisition by Google

The Google Cloud Platform team shares Orbitera's vision for seamless purchase and deployment of IT services across heterogeneous cloud infrastructure.

June 3, 2016

WilmerHale Counsels TransMedics in Closing of $51.2M Growth Financing to Transform Organ Transplant Therapy

TransMedics, Inc., a medical technology company dedicated to improving quality, assessing viability and increasing the utilization of donor organs for transplantation announced the closing of $51.2 million growth equity financing.

March 24, 2016

2016 Venture Capital Report

The 2016 Venture Capital Report provides an in-depth analysis of, and outlook for, the US and European venture capital markets. The report features industry and regional breakdowns, and a look at trends in venture capital financing, convertible debt and VC-backed company M&A deal terms. We also highlight two new funding techniques that have expanded the pre-IPO financing toolkit; five common mistakes made by fledging entrepreneurs; and four things you need to know about doing business in California.

September 23, 2014

Millennial Media to Acquire Nexage, a Leading Mobile SSP and Advertising Exchange

Millennial Media today announced that it has signed a definitive agreement to acquire Nexage for approximately $107.5 million in cash and stock, subject to certain adjustments.

September 27, 2013

Law360 Names WilmerHale Pro Bono Firm of the Year for Second Consecutive Year

For the second consecutive year, Law360 selected WilmerHale to its "Pro Bono Firms of the Year" list for notable successes.

Speaking Engagements

  • Forming an Entity and Raising Capital, Suffolk Law School, Transactional Law and Practice Class, March 24, 2014
  • Key Legal Issues for Startups: Positioning Your Startup for Success, Boston College, January 30, 2014 
  • Avoiding Legal Landmines, Harvard iLab, July 18, 2013 and July 23, 2013 
  • Forming an Entity and Raising Capital, Suffolk Law School, Transactional Law and Practice Class, March 25, 2013
  • Concerning Founder Equity, Colby College, Entrepreneurial Alliance Program, October 18, 2012
  • Legal Issues for Start-Up Companies: Formation, Northeastern University, Global Entrepreneurship Week, November 16, 2011
  • Concerning Founder Equity, Colby College, Entrepreneurial Alliance Program, October 13, 2011

Professional Activities

Mr. Osborn regularly holds office hours at the Harvard iLab, serves as an attorney advisor for the Harvard Law Entrepreneurship Project and coordinates the firm’s event partnership with the Entrepreneurs and Investors (E&I) event series. Mr. Osborn also leads free legal workshops and clinics for small community businesses in collaboration with the Lawyers’ Committee’s for Civil Rights Under Law of the Boston Bar Association.


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JD, Boston University School of Law, 2006, Editor, Annual Review of Banking & Financial Law

BA, Philosophy/Mathematics, magna cum laude, Colby College, 2003, Distinction in Philosophy and Philosophy/Mathematics

Bar Admissions


New York

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