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    Home /  Lawyers /  Catherine M. Clarkin

    Catherine M. Clarkin

    Partner

    Catherine M. Clarkin Headshot Photo

    New York

    +1-212-558-4175

    |

    clarkinc@sullcrom.com

    Email vCard

    Cathy Clarkin is a partner in Sullivan & Cromwell’s Capital Markets and Financial Institutions Groups and is Co-Head of the Firm’s Capital Markets Group. She advises clients on a wide variety of capital market transactions across a broad range of industries. Cathy has advised on many high-profile public and private offerings of equity and debt securities by U.S. and non-U.S. issuers, including IPOs, secondary offerings, complex debt issuances, liability management transactions and securities issued in connection with M&A and joint ventures. She regularly advises a broad range of clients on ongoing public company matters, including corporate governance, ESG, cybersecurity and disclosure matters.

    Professional Activities and Community Involvement

    • Treasurer and Board Member, TEAK Fellowship
    • Director, Lawyers Alliance for New York
    • Member, NYC Bar Securities Regulation Committee

    Speaking Engagements

    • “Climate Change Rulemaking in the U.S. and Europe: Disclosure Requirements and Key Considerations for Directors & Officers,” Pérez-Llorca and IE Chair for Commercial Law Seminar
    • “ESG Hot Topics,” WomenCorporateDirectors
    • “Women on Boards: A Discussion with Sullivan & Cromwell LLP & Egon Zehnder,” Egon Zehnder
    • “What’s New in Securities Law? Traps for the Unwary,” Practising Law Institute
    • “Creating Environmental, Social, and Governance Criteria: Transparency, Reliance, and Due Diligence,” Strafford
    • “Securities Filings 2018: Practical Guidance in a Changing Environment,” Practising Law Institute
    Read More

    Spotlight

    S&C Advises Enbridge in $2.25 Billion SEC-Registered Notes Offering

    Read More

    S&C Advises Ally Financial in $750 Million Public Notes Offering

    Read More

    S&C Advises First Horizon in Completing $500 Million SEC-Registered Notes Offering

    Read More

    S&C Advises Canadian Pacific on $1.2 Billion SEC-Registered Senior Notes Offering

    Read More

    Sharon Nelles, Cathy Clarkin, Steve Peikin, Dalia Blass, Jamie McDonald and Colin Lloyd to Speak at SIFMA’s C&L Seminar

    Read More
    • Experience
    • Rankings and Recognitions
    • News
    • Publications, Videos and Podcasts
    • Credentials
    • Related Practices
    Experience

    Experience

    Selected Capital Markets Transactions

    • Ally Financial Inc. in its preferred stock offering
    • Artisan Partners Asset Management in multiple synthetic secondary equity offerings
    • Baxter International Inc. in multiple debt offerings and exchange offers
    • BNP Paribas in the sale of common stock of First Hawaiian, Inc.

    • Enbridge Inc. in its debt offerings (including its inaugural sustainability-linked bond, the first sold by a North American pipeline company)
    • First Midwest Bancorp, Inc. in its preferred stock and notes offerings and related liability management transactions
    • First Republic Bank in its secondary equity, subordinated notes and preferred stock offerings
    • Integra LifeSciences Holdings Corporation in its follow-on equity and convertible notes offerings
    • IntercontinentalExchange Inc. in its secondary equity and notes offerings, including in connection with its $11 billion acquisition of Ellie Mae, its $5.2 billion acquisition of Interactive Data Corporation and its $8.2 billion acquisition of NYSE Euronext
    • Regions Financial Corporation in its preferred stock and notes offerings and related asset liability management transactions
    • Ryder System, Inc. in multiple notes offerings
    • Texas Capital Bancshares, Inc. in its preferred stock and debt offering
    • UBS AG in its offering of ETRACS exchange traded notes
    • Initial purchasers in connection with high-yield notes offerings by VICI Properties Inc.
    • Underwriters in connection with follow-on equity offerings by Cadence Bancorporation
    • Underwriters in connection with multiple debt and equity offerings by Goldman Sachs
    • Underwriters in connection with multiple debt offerings by Manitoba
    • Underwriters in connection with multiple debt offerings by Québec
    • Underwriters in connection with preferred stock and notes offerings by Stifel Financial Corp.
    • Underwriters in connection with notes and secondary equity offerings by Visa Inc. 

    Selected IPOs

    • Artisan Partners Asset Management Inc. in its IPO and NYSE listing
    • First Hawaiian Bank in its IPO, spinoff from BNP Paribas, and Nasdaq listing
    • First Republic Bank in its $323 million IPO and NYSE listing
    • National Australia Bank in the IPO and NYSE listing of its U.S. bank subsidiary, Great Western Bancorp, Inc.
    • Thimble Point Acquisition Corp., a SPAC formed by the Pritzker Vlock Family Office and LaunchCapital, in its upsized IPO, Nasdaq Capital Market listing and merger with Pear Therapeutics, Inc.
    • TS Innovation Acquisitions Corp., a SPAC formed by Tishman Speyer Properties, L.P., in its IPO and Nasdaq listing
    • TS Innovation II Corp., a SPAC formed by Tishman Speyer Properties, L.P., in its IPO and Nasdaq listing
    • Underwriters in connection with the $718 million IPO and NYSE listing by Artio Global Investors Inc.
    • Underwriters in connection with the $150 million IPO and NYSE listing by Cadence Bancorporation
    • Underwriters in connection with the $339.3 million IPO and Nasdaq Global Select Market listing by CBOE Holdings, Inc.
    • Underwriters in connection with the $470.6 million IPO and NYSE listing by Clear Secure, Inc.
    • Strategic investor in connection with the $500 million IPO and NYSE listing by Vantiv Inc.

    Selected M&A Transactions

    • Amgen in its $13.4 billion acquisition of worldwide rights to Otezla® (apremilast) from Celgene in connection with Celgene’s merger with Bristol-Myers Squibb
    • Andeavor (formerly known as Tesoro Corporation) in its acquisition of Western Refining Inc.
    • Cheniere Energy, Inc. to acquire all of the outstanding shares of Cheniere Energy Partners LP Holdings, LLC (CQH)
    • Diebold in its combination with Wincor Nixdorf to form Diebold Nixdorf
    • IntercontinentalExchange Group, Inc. in its acquisition of NYSE Euronext, Ellie Mae, and IDC
    • Kraft in its merger with H.J. Heinz to form The Kraft Heinz Company
    • Praxair, Inc. in its $80 billion combination with Linde AG
    Read More
    Rankings and Recognitions

    Rankings and Recognitions

    • Profiles in Diversity Journal – named a “Woman Worth Watching” (2021)
    • Chambers Global – recognized for Capital Markets: Debt & Equity: Eastern U.S. (2022–2024)
    • Chambers USA – recognized for Capital Markets: Debt & Equity: Eastern U.S. (2020–2024)
    • The Legal 500 U.S. – recognized for Capital Markets: Debt Offerings (2017, 2018), Capital Markets: Equity Offerings (2017, 2018), and Capital Markets: Global Offerings (2018)
    • IFLR1000 U.S. – recognized for Capital Markets: Equity (2017–2020)
    • Euromoney Legal Media Group Americas Women in Business Law Awards – winner “Best in Capital Markets: Equity” (2020) and shortlisted “Best in Capital Markets” (2017)
    • Law360 – won “Capital Markets MVP” award (2024 and 2016)
    Read More
    News

    News

    • S&C Advises Enbridge in $2.25 Billion SEC-Registered Notes Offering

      June 30, 2025
    • S&C Advises Ally Financial in $750 Million Public Notes Offering

      May 29, 2025
    • S&C Advises First Horizon in Completing $500 Million SEC-Registered Notes Offering

      March 25, 2025
    • S&C Advises Canadian Pacific on $1.2 Billion SEC-Registered Senior Notes Offering

      March 21, 2025
    • Sharon Nelles, Cathy Clarkin, Steve Peikin, Dalia Blass, Jamie McDonald and Colin Lloyd to Speak at SIFMA’s C&L Seminar

      March 17, 2025
    • S&C Advises Ally Financial in $1 Billion Public Notes Offering

      December 13, 2024
    Read More
    Read More
    Publications, Videos and Podcasts

    Publications, Videos and Podcasts

    • SEC’s Final Climate Rules for Public Companies: Key Requirements and Takeaways

      Webinars March 18, 2024
    • ESG Trends and Hot Topics

      Newsletters May 31, 2022
    • Episode 2: Implications of SEC’s Proposed Climate-Related Disclosure Rules

      Podcasts May 11, 2022
    • Episode 1: Implications of SEC’s Proposed Climate-Related Disclosure Rules

      Podcasts May 9, 2022
    • Cathy Clarkin, John Horsfield-Bradbury, Jeffrey Hochberg and Ekaterina Roze Author Chapters for Getting the Deal Through

      Articles March 29, 2022
    • Developments Affecting 10b5-1 Trading Plans

      Podcasts December 6, 2021
    Read More
    Read More
    Credentials

    Credentials

    Education

    • The Catholic University of America Columbus School of Law, J.D., 1995
    • American University, B.A., 1992

    Bar Admissions

    • New York
    Read More
    Related Practices

    Related Practices

    • General Practice
    • Canada
    • Capital Markets
    • Commodities, Futures & Derivatives
    • Consumer & Retail
    • Corporate Governance
    • Cybersecurity
    • Environmental, Social and Governance (ESG)
    • Financial Services
    • Healthcare & Life Sciences
    • SPACs
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