Todd Rosenthal


Rosenthal, Todd

Todd Rosenthal's practice focuses on all aspects of corporate law. He represents public and private companies in a variety of industries, including technology, life sciences and financial services.

Mr. Rosenthal was a summer associate at WilmerHale in 2014. Prior to joining the firm, he was a legal intern in the Office of the Attorney General of Massachusetts in the Insurance & Financial Services Division, where he worked on consumer protection matters involving the insurance and lending industries. During law school, he served as a writing fellow for the first year writing program.

Before attending law school, Mr. Rosenthal was a legal assistant at a large law firm. In that role, he worked on a variety of litigation matters, including insurance class actions, SEC investigations, shareholder derivate suits and antitrust litigation cases.

Publications & News


May 3, 2018

WilmerHale Counsels Casa Systems in Public Offering by Selling Stockholders

Casa Systems, Inc.—a provider of software-centric solutions for next-generation distributed and virtualized architectures in cable operator, fixed telecom and wireless networks—announced the pricing of its follow-on public offering of 7,350,000 shares of common stock.

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.

July 11, 2017

Staples, Inc. Enters Into Definitive Agreement to Be Acquired by Sycamore Partners for $10.25 per Share in Cash, or Approximately $6.9 Billion

Staples, Inc. and Sycamore Partners, a leading private equity firm, announced that they have entered into a merger agreement in which investment funds managed by Sycamore Partners will acquire Staples in a transaction that values Staples at an equity value of approximately $6.9 billion.

April 25, 2017

Cool Planet Closes on Nearly $20M to Fund Commercialization of Engineered Biocarbon Products

WilmerHale counseled agriculture technology company Cool Planet in the closing of a $19.3 million Series A financing to commercialize its Cool Terra and Cool Fauna engineered biocarbon products.

June 22, 2016

WilmerHale Counsels Zaius in $8M Series B Funding Led by Underscore.VC

Zaius, the only CRM built for the scale and velocity of business-to-consumer marketers, announced it has closed an $8 million investment led by _Underscore.VC, with participation from Leaders Fund and existing investor Matrix Partners.

March 24, 2016

2016 M&A Report

Our 2016 M&A Report offers a detailed review of, and outlook for, the global M&A market. Other highlights include a comparison of deal terms in public and private acquisitions; updates on takeover defenses and public company deal litigation; practical guidance on avoiding antitrust violations in pre-merger integration planning; a look at what buyers need to know about appraisal claims in private company mergers; and a survey of key terms and issues in sales of VC-backed companies.


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JD, cum laude, Boston University School of Law, 2015, Editor, Boston University Law Review

BA, English and Government, Wesleyan University, 2010

Bar Admissions


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