
The Boston-based international tax team at Sullivan & Worcester LLP has extensive experience advising on a whole host of cross-border transactions and operations, such as M&A, global tax risk assessments and fintech ventures. Practice head Douglas Stransky is a key contact for US-based clients investing in international jurisdictions and also advises on cryptocurrency and fintech ventures. Lewis Greenwald’s broad practice encompasses tax planning, compliance and controversy as well as transfer pricing matters. Further strengthening the team is Eric Rietveld, who specializes in REITs and also handles investments in funds and controversies, routinely representing clients before the IRS, state authorities and the US Tax Court.
Legal 500 Editorial commentary
Testimonials
Collated independently by Legal 500 research team.
- The international collaboration with S&W is exceptional.
- Lewis Greenwald shows excellent judgment in high-stakes situations, moves fast, and communicates clearly without over-lawyering.
- What really stands out is their willingness to engage, openness to different ideas and opinions, clearly expressed expectations, and clients' objectives.
Key clients
- The Broadstone Group LLC
- Iron Mountain Incorporated
- Equinix, Inc.
- Lionbridge Technologies, Inc.
- Altra Industrial Motion
- E Ink Corporation
- Standex International
- DarioHealth Corp.
- International Transportation Marine Office, LLC
- Truliant Consulting
Work highlights
Representing The Broadstone Group in connection with the 2028 Summer Olympic Games in Los Angeles, advising on both corporate and individual tax issues in multiple countries.
Lawyers
Leading partners
The strongest partners in their field, leading on market-leading deals and endorsed by peers and clients alike.

Practice head
Douglas Stransky
Other key lawyers
Lewis Greenwald; Eric Rietveld
