Mick Bain


Co-Chair, Corporate Practice Group

Bain, Mick

Mick Bain advises entrepreneurs, startups and high growth companies throughout their lifecycles. In addition, he represents venture capital firms, growth equity firms and strategic investors when making their portfolio investments. Recognized as a trusted advisor, he has helped hundreds of companies raise billions of dollars in seed, venture and strategic financing. His clients have spanned a vast array of technology and life sciences industries, including big data, clean technology, cybersecurity, digital advertising, digital media, e-commerce, FinTech, mobile and telecommunications, software, biotech and medical devices.

With more than two decades of experience, Mr. Bain advises his company clients on formation and governance issues, equity compensation matters, securities laws, international expansion and many other areas that are key to the growth of technology and life sciences companies. He also represents clients in complex corporate transactions including capital raising, M&A transactions, joint ventures, initial public offerings and other capital markets transactions. 

In addition, he has worked extensively with many venture capital and growth equity and strategic investors. These clients include North Bridge Venture Partners, Matrix Partners, MPM Capital and Spark Capital.

Learn more about Mr. Bain's practice and how he can support your startup on

Recent Highlights

Mr. Bain represents entrepreneurs and private companies in various stages of development in addition to his representation of venture firms and other investors. 

Representative Financing Transactions

  • 1366 Technologies, Inc. raising over $55.5 million in multiple early-stage financings
  • Blue Danube Labs, Inc. raising over $25.7 million in multiple venture and strategic financings
  • Casa Systems, Inc. raising nearly $110 million in multiple strategic financings
  • Constellation Pharmaceuticals, Inc. raising $55 million in a late stage financing
  • Kala Pharmaceuticals, Inc. raising $68 million in a Series C financing
  • Lattice Engines, Inc. raising over $63 million in multiple venture and strategic financings
  • Reflexis Systems, Inc. raising nearly $43 million in multiple venture and strategic financings

Representative M&A Transactions

  • Aegis Lightwave, Inc. acquisition by II-VI Incorporated
  • Ahura Scientific, Inc. acquisition by Thermo Fisher Scientific Inc.
  • airwide solutions inc. acquisition by Maviner
  • Bzzagent, Inc. acquisition by dunnhumby USA, Inc.
  • Chosen Security, Inc. acquisition by PGP Corporation
  • CMGI, multiple M&A, joint venture and financing transactions
  • Newforma, Inc. asset purchase of  Smart Use Software, Inc.
  • Nexage, Inc. acquisition by Millennial Media, Inc.
  • PerkinElmer, multiple buy-side M&A transactions
  • Rhythmia Medical, Inc. acquisition by Boston Scientific Corporation
  • Sanbolic acquisition by Citrix
  • Thermo Fisher Scientific, Inc., multiple buy-side and sell-side M&A transactions

Past Experience

Mr. Bain was previously associate general counsel of CMGI, Inc. where he advised CMGI and its subsidiaries with respect to a variety of domestic and international transactions, including venture capital investments, mergers and acquisitions, and international joint ventures in the United States, Asia, Europe and South America.

Honors & Awards

  • Recognized for his "knowledge and understanding of the startup environment" and as a "well-respected force within the venture capital market" who is "highly regarded by peers" for his private equity: venture capital investment (2011-2017) and startups & emerging companies (2017) practices by Chambers USA: America's Leading Lawyers for Business
  • Named one of the Best Lawyers in America in the area of venture capital law (2009-2018) and corporate law (2010-2018)
  • Recommended in the 2016 and 2017 editions of The Legal 500 United States for his M&A/Corporate and Commercial: Middle-Market and as well as Venture Capital and Emerging Companies practices
  • Named a "New England Super Lawyer" (formerly "Massachusetts Super Lawyer") from 2009-2015
  • Named a "Massachusetts Super Lawyer Rising Star" in securities and venture finance in the May 2005 edition of Boston Magazine

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.

December 21, 2017

WilmerHale Represents Casa Systems in Initial Public Offering

On December 19, 2017, Casa Systems, Inc., a provider of software-centric solutions for next-generation distributed and virtualized architectures in cable operator, fixed telecom and wireless networks, closed its initial public offering.

November 6, 2017

WilmerHale Represents 1366 Technologies in $9M Series D Funding

Developer of manufacturing solutions for silicon cell manufacturers, 1366 Technologies, has raised $9 million in Series D funding from strategic partners and return investors.

October 30, 2017

WilmerHale Represents Consumer Physics in $4.95M Series C Funding

Consumer Physics—developer of SCiO, the world's first pocket-sized connected micro-spectrometer—completed its Series C financing round raising a total of $4.95 million.

September 26, 2017

Mick Bain Named "50 on Fire" Finalist by BostInno

The “50 on Fire” awards highlight the most impactful group of individuals and companies in Boston tech and innovation covering a span of industries.

August 16, 2017

WilmerHale Lawyers Named Among the 2018 Best Lawyers in America®, Nine Recognized as Lawyers of the Year

Best Lawyers in America®—the oldest and most respected peer-review publication in the legal industry—recognizes 107 WilmerHale lawyers and names nine partners as Lawyers of the Year in its 24th edition.

June 9, 2017

The Legal 500 United States 2017 Recognizes 125 WilmerHale Lawyers Across 28 Practice Areas

The Legal 500 United States has released its 2017 rankings, recommending 125 WilmerHale lawyers—including 12 who are named to its elite “Leading Lawyers” list and two on its “Next Generation Lawyers” list—and 28 practice areas in its 11th edition.

May 26, 2017

WilmerHale Lawyers and Practices Recognized in 2017 Edition of Chambers USA

Chambers and Partners announced its rankings for the 2017 edition of Chambers USA: America's Leading Lawyers for Business, with WilmerHale listed among the nation's best in 50 practice area categories. Chambers also ranked 86 WilmerHale lawyers as leaders in their respective fields.

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.

April 5, 2017

WilmerHale Counsels Reflexis to Accelerate Growth With Investment From Great Hill Partners

Reflexis, the leader in retail real-time execution and workforce management solutions, announced that it has received a minority equity investment from Great Hill Partners.

Professional Activities

Mr. Bain is a member of the American Bar Association and is a frequent guest lecturer on entrepreneurship and corporate finance at MIT Sloan, Harvard Business School, Boston University and Babson College.


Skip Navigation Links.


JD, magna cum laude, Boston University School of Law

BA, magna cum laude, Providence College, Pi Sigma Alpha

Bar Admissions


Skip Navigation Links.