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Kimberly C. Petillo-Décossard

Kimberly C. Petillo-Décossard


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Cahill Gordon & Reindel LLP
32 Old Slip
New York, NY 10005



  • Albany Law School, J.D., 2005, magna cum laude; Albany Law Review, Executive Editor for State Constitutional Commentary
  • Furman University, B.A., 2000, cum laude


  • New York

As co-chair of Cahill’s M&A and Corporate Advisory practice group, Kimberly advises corporations, boards, private equity firms and family offices on complex business law matters, focusing on mergers and acquisitions and other strategic transactions. She also advises on acquisition finance, growth equity and other minority investments, governance, disclosure and compliance matters. 

Recognized as a Dealmaker of the Year by The American Lawyer in 2022, Kimberly has also been named one of the “Most Influential Women in Mid-Market M&A” by Mergers & Acquisitions magazine, has been featured in The Deal’s Women in Dealmaking, has been listed in Lawdragon's The 500 Leading Lawyers and The 500 Leading Dealmakers guides since 2021, and recognized as Highly Regarded and as a Women Leader by IFLR1000, and named a Top 50 Attorney of New York by Attorney Intel, as well as a leading Corporate/M&A lawyer by Chambers USA in the New York region. She is recognized as a Leading Lawyer by The Legal 500 nationally with one client remarking, “Kimberly Petillo-Décossard is a stand-out partner. Her ability to quickly and succinctly understand the unique situation of our company and provide reasonable alternatives to achieve our objectives has proven invaluable.” Kimberly was named a Mergers & Acquisitions MVP by Law360 in 2021 and was recognized in The American Lawyer's 2021 inaugural list of Northeast Trailblazers. She has also been named among the Notable Women in Law by Crain’s New York Business for 2020 and 2022. Kimberly was shortlisted for IFLR Americas Awards 2022 Women Dealmakers Hall of Fame and in 2021 she was shortlisted for Women in Business Law Lawyer of the Year: M&A. She was also shortlisted for IFLR1000’s Lawyer of the Year: M&A in 2020. In 2018, Kimberly was selected as a Rising Star by the New York Law Journal and an Emerging Leader by The M&A Advisor. 

Noted in Chambers as an attorney who “is smart, practical and gives legal advice based on the business ramifications and risk assessment,” Kimberly has experience practicing in a variety of industries, including: biotechnology, energy, financial services, health care, insurance, manufacturing, media, pharmaceutical, retail and technology. Current representations include 1-800-Flowers, Arch Capital Group Ltd., Broadridge Financial Solutions, Dyadic International, Inc., ICON plc, Kaspien Holdings, North European Oil Royalty Trust, Shutterstock, Inc., and other privately and publicly-held companies.

A highly-sought speaker and author on M&A, transactional matters and corporate governance topics, Kimberly has written pieces for The DealCorporate Board Member, New York Law Journal and Directorship, a publication of the National Association of Corporate Directors. She has both moderated and spoken on panels at The Deal Economy Conference in New York, served on a panel sponsored by the ABA’s Women in M&A Task Force, moderated an M&A discussion at BIO’s CEO Conference and co-chaired Thomson Reuters’ NY M&A Forum, among others.

Kimberly currently serves as Cahill's Co-Administrative partner. She founded the Women’s Leadership Initiative (“WLI”) at Albany Law School and chairs the WLI Advisory Committee. Kimberly also serves on the Board of Trustees at Albany Law School and on New York-Presbyterian’s Leadership Council on Children’s and Women’s Health. 

She has previously served as co-chair of the Association for Corporate Growth (NY) Women of Leadership Committee, on the Dean’s Leadership Council at Albany Law School, on the Board of Trustees at Tuxedo Park School, on the Leadership Advisory Committee of the National Women’s Law Center and on the Board of Directors of PowerPlay NYC, a non-profit dedicated to advancing the lives of girls through sport.

M&A Transactions:  Representation of

  • 1-800-FLOWERS.COM in connection with its:
    • Sale of Fannie May Confections Brands, Inc.
    • Acquisition of Harry & David and the related acquisition financing
    • Acquisition of
    • Acquisition of Shari’s Berries Brand
    • Acquisition of Vital Choice
  • Arch Capital in connection with its acquisition of Watford Holdings
  • Ascend Health Corporation in connection with its acquisition by Universal Health Services, Inc.
  • Cable One. Inc. in its acquisition or investment in three communications service providers
  • Colt Defense in connection with its acquisition of New Colt Holding Corp., the parent company of Colt’s Manufacturing Company LLC
  • Dyadic International, Inc. in connection with its sale of substantially all of the assets of its Industrial Technology business to DuPont Industrial Biosciences
  • ICON plc in connection with its:
    • Acquisition of Aptiv Solutions, Inc.
    • Acquisition of Clinical Research Management, Inc.
    • Acquisition of the clinical trial services division of Cross Country Healthcare, Inc., which includes ClinForce, LLC and its subsidiaries, Assent Consulting, Inc. and Metropolitan Research Associates, Inc.
    • Acquisition of MolecularMD, a Portland, OR-based molecular diagnostics lab
    • Acquisition of PRA Health Sciences, Inc.
    • Acquisition of Symphony Clinical Research
  • IDP Holdings, a joint venture of Ironshore Holdings and The Distinguished Programs Group in connection with its acquisition of the hospitality business of National Specialty Underwriters
  • Integro Ltd. in connection with its acquisition by entities affiliated with Odyssey Investment Partners, LLC
  • Ironshore Inc. in connection with the acquisition by Fosun International Limited
  • S&P Global in connection with its acquisition of 451 Research, LLC
  • Shutterstock, Inc. in its acquisition of Pond5
  • Springs Industries in connection with its acquisition by private equity firm Golden Gate Capital
  • The Empire District Electric Company in connection with its acquisition by a subsidiary of Algonquin Power & Utilities Corp.
  • The Shade Store LLC in connection with Great Hill Partners’ investment in the Company

Corporate Finance Transactions:  Representation of

  • Arch Capital Group Ltd. In $1.0 billion notes offering
  • Broadridge Financial Solutions, Inc. in connection with its amended and restated $1.0 billion revolving credit facility and $750 million notes offering
  • Forbes Media LLC in connection with its $55 million credit facility
  • Foresight Energy LLC in connection with the Rule 144A offering of $600 million aggregate principal amount of 7.875% Senior Notes due 2021
  • Foresight Energy LP in connection with its initial public offering of common units
  • Horizon Global Corporation in connection with a new $200 million term loan facility and $85 million asset-based revolving credit facility entered into simultaneously with its spin-off by TriMas Corporation
  • ICON plc in connection with the private placement of $350 million aggregate principal amount of 3.64% Senior Notes due 2020
  • Parkland Fuel Corporation in $500 million notes offering
  • The Empire District Electric Company in connection with the private placement of $88 million 3.58% First Mortgage Bonds due 2027, $30 million 3.73% First Mortgage Bonds due 2033, $120 million 4.32% First Mortgage Bonds due 2043, and $60 million 4.27% First Mortgage Bonds due 2044
  • TriMas Corporation in connection with the Rule 144A offering of $300 million aggregate principal amount of 4.875% senior notes due 2025, its $300 million senior secured revolving credit facility and several offerings of shares of its common stock