Sullivan
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Biography

Eric Rietveld concentrates his practice on tax planning and compliance for multinational corporations, entrepreneurs, and high-net-worth individuals. He assists his clients in all matters of tax planning, with a focus on assisting clients with international exposure. Specifically, he has experience assisting clients with international tax planning, including issues related to intellectual property migration, foreign asset reporting, expatriation for individuals, and both inbound and outbound international tax issues for businesses.

Eric also has extensive experience in tax controversy matters and has represented clients with tax disputes before the IRS, state authorities, the US Tax Court, and Federal Courts. Recently, he has advised several clients on sales and use tax collection and filing obligations and exposure related to their national presence.

Education
  • Boston University School of Law (LL.M.)
  • Boston College Law School (J.D.)
  • Whitman College (B.A.)
Bar & Court Admissions
  • Massachusetts
  • U.S. Tax Court
  • Massachusetts Federal District Court
  • U.S. Court of Appeals for the First Circuit
Awards & Honors
  • "Rising Star," Massachusetts Super Lawyers (2016-2018, 2020-2026)
  • Recommended by The Legal 500 U.S. (2024-2026)
Representative Matters
  • Represented Truliant Consulting, a leading pharmacovigilance, risk management, and regulatory compliance advisory firm, in connection with its acquisition by ELIQUENT Life Sciences
Top Tier Firm, Legal 500 United States 2026
Sullivan & Worcester Ranked in the Legal 500 United States 2026 Edition
Boston, MA – Sullivan & Worcester announced that its practice groups and attorneys have been ranked and recommended in the Legal 500 United States 2026. The firm’s Real Estate practice was newly ranked Tier 1 in the “Real estate – mid-market ($0-500m)” category and the firm maintained rankings across a variety of practice areas. Partners Nicole Crum and John Steiner were newly ranked as Leading Partners and Ryan Rosenblatt as a Next Generation Partner. Peers and more than 300,000 corporate counsel were surveyed and interviewed globally in the past 12 months to assess law firms’ overall visibility and reputation, culminating in detailed rankings and editorial. The Legal 500 is an independent guide, and firms and individuals are recommended purely on merit. Sullivan's lawyers received the following rankings: Leading Partners: The Legal 500’s Guide to Outstanding Lawyers Nationwide Benjamin Armour - M&A: Middle-Market (Sub-$500m); M&A: middle-market ($0-250m) Ameek Ashok Ponda - Real Estate Investment Trusts (REITs)  Nicole Crum - Mutual/registered/exchange-traded funds Lewis Segall - M&A: Middle-Market (Sub-$500m); M&A: middle-market ($0-250m) John Steiner - Real estate – mid-market ($0-500m) Douglas Stransky - International Tax Joel Telpner - Fintech Next Generation Partners: The Legal 500’s Guide to Up-and-Coming Lawyers Nationwide Ryan Rosenblatt - General commercial disputes – mid-market ($250-500m) Sarah Wellings - Real Estate Investment Trusts (REITs) Practice Areas Ranked and Attorneys Recognized Corporate Governance “Our lead partner, Nicole Crum, who leads the investment industry practice, is exceptional. She demonstrates strong industry knowledge yet is very personable and anticipates what we need to know or what we should consider doing to handle any matter. The team roll up their sleeves and provide recommendations as to how we as a board should handle any matter. Strong service commitment and work ethic!” “The team we have at Sullivan & Worcester has served our company for years and knows the management team, staff as well as our board members. They are extremely responsive and proactive and anticipate what we should be aware of, concerned about, excited about, and how to handle oversight, processes and protocols to ensure we are carrying out our fiduciary duties. The partners are experts in this industry.” Leading Partner: Nicole Crum Recommended Lawyers: Howard Berkenblit, David Leahy Dispute Resolution/General Commercial Disputes “Diverse skillset. Client centric. Transparency. Urgency provided on all matters.” “I have worked with Gerry Silver for over 15 years and have found his pragmatic approach to complex matters refreshing. He understands our business, culture and market, and will give me his opinion in a digestible manner.” Next Generation Partner: Ryan Rosenblatt Recommended Lawyers: Gerry Silver, Patrick Dinardo, Laura Steinberg, Michael Sullivan, Amy Zuccarello, Erika Todd, Christopher Shields, Anna Lea McNerney Employee Benefits, Executive Compensation and Retirement Plans: Design “The level of expertise is top shelf. David Guadagnoli seems to know all of ERISA and IRS rulings.” “David Guadagnoli and Amy Sheridan both have superior knowledge in their respective areas. I value the ability to raise issues whether simple or complex. The firm takes the same diligent approach across all spectrums of complexity.” Recommended Lawyers: David Guadagnoli, Amy Sheridan Environment: Transactional Fintech “Sullivan & Worcester is one of the finest firms with which I have worked.” “The lawyers are excellent, and the firm consistently provides the highest quality of customer service.” Leading Partner: Joel Telpner Recommended Lawyers: Natalie Lederman, Benjamin Armour, Scott Kaufman, Harvey Bines, Christopher Curtis Land Use/Zoning Recommended Lawyers: Gregory Sampson, Ashley Brooks, Victor Baltera, Karen Kepler, Ashley Tan M&A: Corporate and Commercial: Venture Capital and Emerging Companies Recommended Lawyers: Scott Kaufman, Lewis Segall, Benjamin Armour, Michael Student M&A: Middle-Market ($0-250m) “The partner Lewis Segall has been working with our company for 15 years and we have a good working relationship with him. He knows our history and very attentive to our needs.” “Lewis Segall is very attentive to our needs. We very much value him.” Leading Partners: Benjamin Armour, Lewis Segall Recommended Lawyers: Natalie Lederman Mutual/Registered/Exchange-Traded Funds “Sullivan & Worcester's practice is defined by its deep expertise in investment funds and its ability to deliver clear, commercially grounded advice across the full fund lifecycle—from formation and structuring to regulatory compliance and complex transactions.” “The team is highly experienced, collaborative, and excel in efficient execution and clear communication.” Leading Partner: Nicole Crum Recommended Lawyers: David Leahy, David Mahaffey, Rachael Schwartz Real Estate Leading Partner: John Steiner Recommended Lawyers: Ashley Brooks, Karen Kepler, Gregory Sampson, Sharon Leifer, Louis Monti, Spencer Stone, Ashley Tan Real Estate Investment Trusts (REITs) “We have built multiple complex and sophisticated REIT platforms over the years and worked with many top-tier REIT specialists, but Sullivan’s REIT practice is by far the best, with Sarah Wellings.” Leading Partner: Ameek Ashok Ponda Next Generation Partner: Sarah Wellings Recommended Lawyers: Angela Gomes, Louis Monti, Shu Wei, Cameron Cosby International Tax “The international collaboration with S&W is exceptional.” “What really stands out is their willingness to engage, openness to different ideas and opinions, clearly expressed expectations, and clients' objectives.” Leading Partner: Douglas Stransky Recommended Lawyers: Lewis Greenwald, Eric Rietveld Tax > US Taxes: Contentious Recommended Lawyers: Richard Jones, David Nagle, Daniel Ryan, Caroline Kupiec Tax > US Taxes: Non-Contentious “Sarah Wellings is, quite simply, the best lawyer we have ever worked with. Her expertise extends far beyond tax and REIT matters, encompassing governance, financing, and complex commercial issues. Decades of experience and technical mastery make her an indispensable partner. Sarah is our central point of contact who makes everything seamless. Her in-house counsel background gives her a unique client perspective: she anticipates needs, solves problems before they arise, and delivers concise, well-structured updates that simplify even the most intricate issues. She coordinates effortlessly with all parties involved. Her judgment is exceptional. Sarah strikes the perfect balance between comprehensive academic rigor and practical, business-oriented advice. She combines technical REIT/tax excellence with commercial instincts, ensuring every recommendation is both legally sound and strategically smart. Her ability to translate complex law into clear, actionable guidance is unmatched. Sarah is incredibly responsive without ever sacrificing quality. She treats our matters as her own, demonstrating a rare ownership mindset and collaborative spirit. Her integrity is uncompromising, giving us absolute confidence in her counsel. In short, Sarah Wellings defines legal excellence: reliable, commercially minded, and client-focused. Working with her feels like being in the safest possible hands; she consistently exceeds expectations and orchestrates complex transactions with clarity and precision.” Recommended Lawyers: Ameek Ashok Ponda, Richard Jones, Douglas Stransky, Sarah Wellings About Sullivan Sullivan & Worcester (Sullivan) is a premier international law firm with lawyers in Boston, London, New York, Tel Aviv and Washington, D.C. Sullivan’s clients, including Fortune 500 companies, leading financial services firms and asset managers, boards of directors, real estate companies, and emerging businesses, rely on Sullivan’s ability to navigate complex legal and operational landscapes, the impeccable judgment of its lawyers, and its commitment to best-in-class client service.
Sullivan Advises Somatix in Merger with Vitalist
Sullivan advised long-time client Somatix, a digital health company specializing in wearable-based patient monitoring solutions, in connection with its acquisition by Vitalist, a health technology company focused on longevity and preventive care, in an all-stock merger transaction. The transaction positions the combined company to advance its capabilities in digital health and remote patient monitoring, supporting continued innovation and growth in the sector. The team advising Somatix was led by Scott Kaufman and Alexander Gansebom, supported by Sullivan attorneys Tamir Chagal, Michael Palmisciano, Amy Sheridan, Douglas Stransky, Erika Todd, Eric Victorson, Janice Lee and Eric Rietveld. Read the full press release here.

Eric J. Rietveld

Eric J. Rietveld