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Professionals 253 results
Capabilities 75 results
Practice Area
With an international geographic reach, Winston & Strawn’s integrated tax practice addresses virtually all areas of tax law. Our group of 40 tax attorneys is well-versed in representing some of the largest public and privately-held corporations, exempt organizations, and large estates.
Practice Area
Tax Controversy & Criminal Tax
Our Tax Controversy attorneys advise and represent clients in every aspect of federal and state tax investigations, as well as the criminal tax enforcement process. This includes the Internal Revenue Service’s (IRS) multi-jurisdictional examinations and administrative appeals, U.S. Competent Authority representations, post appeals mediation, and trial court and appellate litigation in every federal court hearing a tax matter.
Industry
As core segments of the global economy continue to embrace sustainable and carbon-neutral energy resources as complementary and integral to fossil-based systems of energy production and consumption, we stand ready to guide our clients through the energy transition. Our team is at the forefront of the flourishing energy transition market, and we bring practical experience, perspective, and innovative thinking to the sector. By combining our more than 40 years of experience in renewable and conventional energy with an integrated service approach, we help clients to plan for, invest in, and thrive in today’s shifting environment. Not only does our team include experienced energy and corporate lawyers, but also practitioners with deep experience in tax credits and tax equity, project finance, infrastructure, and power and renewables to serve the varied needs of our client base.
Experience 57 results
Experience
|April 2, 2026
Business Combination and Secured Financing of Keo World and Maha Capital AB
Served as legal counsel to KEO World, Inc., a Miami-based fintech platform specializing in embedded credit and B2B digital payments, in connection with its business combination with Maha Capital AB, a publicly listed investment company on Nasdaq Stockholm. The transaction, which closed on April 2, 2026, was structured as a reverse triangular merger through which KEO World became a wholly owned subsidiary of Maha, with KEO World's parent entity receiving approximately 141 million newly issued Maha shares and nearly 49.2 million earn-out warrants as consideration. In connection with the closing, Maha also executed two directed capital raises totaling USD 27 million at SEK 16 per share and announced a planned third raise of USD 8 million ahead of a contemplated dual listing on a U.S. national securities exchange. Based on publicly available disclosures, the combined transaction has been valued at approximately USD 680 million.
Experience
|January 27, 2026
Winston & Strawn secured a decisive victory for PayPal in an intellectual property dispute brought by Irish non-practicing entity Internet Payment Patents LTD (IPPL). Magistrate Judge Susan van Keulen of the Northern District of California entered final judgment in PayPal’s favor, finding all asserted patent claims ineligible under 35 U.S.C. § 101 and granting PayPal’s motion to dismiss without leave to amend.
Experience
|January 22, 2026
Advised SQM on US$600M offering of subordinated capital notes due 2056 (Hybrid Bond Offering)
Winston & Strawn LLP advised longstanding client Sociedad Química y Minera de Chile S.A. (“SQM”) (NYSE: SQM) on its US$600 million offering of subordinated capital notes. The notes were offered in the United States pursuant to Rule 144A and outside the United States pursuant to Regulation S.The subordinated capital notes are due in 2056 and constitute SQM’s first international hybrid bond issuance, structured to be consistent with SQM’s recent UF 10 million (approximately US$ 430 million) Series S hybrid-subordinated bond issuance in the Chilean securities market. The notes bear an initial annual interest rate of 5.625% and are subject to reset on April 22, 2031 (the “First Reset Date”), and on every fifth anniversary thereafter, based on a spread over the 5-year U.S. Treasury bond rate, with interest rate step-ups on the fifth and twentieth anniversaries of the First Reset Date. The transaction closed on January 22, 2026.BofA Securities, Inc., Goldman Sachs & Co. LLC, J.P. Morgan Securities LLC, Santander US Capital Markets LLC, and Scotia Capital (USA) Inc. acted as initial purchasers of the notes.Link Capital Partners was financial advisor to SQM.SQM is a global company with a leading position in the lithium, iodine, and potassium nitrate markets. It develops and produces a diverse range of products for industries essential to human progress, including health, nutrition, renewable energy, and technology, driven by innovation and technological development.The Winston & Strawn team advising on the transaction included corporate partner Sey-Hyo Lee (New York) and foreign legal advisor Bruno M. Fiorino (New York). Partner Katherine Erbeznik (New York) advised on tax matters.
Insights & News 1,371 results
Webinar
|20 May 2026
New European Commercial Mortgage Index: Q1 2026 Data
Join Winston partner Aparna Sehgal for a conversation marking the release of a new European Commercial Mortgage Index (ECMI), an industry partnership between the Bayes Business School's CRE Debt Project and FinLoop, featuring Q1 2026 data.
Capital Markets & Securities Law Watch
|May 13, 2026
|4 Min Read
From 10-Q to 10-S: What the SEC’s Optional Semiannual Reporting Proposal Means for Public Companies
On May 5, 2026, the Securities and Exchange Commission (SEC) proposed optional semiannual Exchange Act reporting on a new Form 10-S, which represents a significant shift in the public company disclosure landscape.
Article
|May 12, 2026
|1 Min Read
Chambers Debt Finance 2026 Global Practice Guide – France & UK Chapters
This article was originally published in Chambers and Partners Global Practice Guide “Debt Finance 2026.” Any opinions in this article are not those of Winston & Strawn or its clients. The opinions in this article are the authors’ opinions only.
Other Results 42 results
Site Content
Tax evasion is the failure to pay or the deliberate underpayment of federal income taxes. The U.S. income tax system is based on voluntary compliance, and it is the taxpayer’s responsibility to report all income and to pay all taxes due. Tax evasion is a known violation of a legal duty, and may result in monetary penalties, imprisonment, or both.
Site Content
A tax authority is a government body or agency responsible for collecting taxes, administering tax laws, and enforcing tax compliance. In the United States, the Internal Revenue Service (IRS) is the federal tax authority. Most states, territories, and local jurisdictions also have tax authorities to ensure compliance with applicable state and local laws and regulations. These tax authorities are generally responsible for collecting taxes, administering tax laws, and enforcing tax compliance in their respective jurisdictions.
Site Content
A tax controversy is a dispute between a taxpayer and a tax authority such as the United States Internal Revenue Service (IRS) concerning whether the taxpayer has properly reported and paid their tax liability, and otherwise complied with applicable tax law. A tax controversy may concern a disagreement regarding the correct amount of tax or the manner in which the IRS is attempting to collect tax, as well as whether penalties are appropriate. Tax controversies may be resolved administratively or in litigation.