Abernathy MacGregor is a premier strategic communications advisory firm renowned for its expertise in high-stakes situations, including mergers and acquisitions, crisis management, shareholder activism, restructurings, litigation support, and corporate reputation management. Founded in 1984, the firm provides senior-level counsel and execution support to public and private companies, boards of directors, and individuals across a wide range of industries. Abernathy MacGregor is a key part of H/Advisors, Havas' global strategic communications network.
The New York headquarters serves as the central hub for Abernathy MacGregor's U.S. operations, housing senior leadership, core client service teams, and strategic planning functions. It coordinates activities across its national offices and provides a base for managing complex client engagements.
Located in a prominent Park Avenue skyscraper, offering modern office amenities, advanced communication facilities, and proximity to major financial institutions and corporate headquarters. The office space is designed to facilitate collaboration and high-level strategic discussions.
The work culture at the New York headquarters is dynamic, fast-paced, and intellectually stimulating, reflecting the high-stakes nature of their advisory work. It emphasizes teamwork, strategic thinking, discretion, and a commitment to client success.
The New York headquarters is significant due to its location in a leading global financial center, enabling close interaction with clients, financial markets, legal communities, and media. It underscores the firm's focus on complex corporate and financial communications.
While Abernathy MacGregor's direct offices are in the US, it operates as a key part of H/Advisors, Havas' global strategic communications network. Through H/Advisors and its extensive network of partner agencies in major international markets, Abernathy MacGregor can seamlessly support clients globally, offering coordinated cross-border communications strategies for M&A, crisis management, investor relations, and corporate reputation across major financial and business centers worldwide.
277 Park Avenue, 39th Floor
New York
NY
USA
Address: 1999 Avenue of the Stars, Suite 2850, Los Angeles, CA 90067
To provide on-the-ground support and local market expertise for clients based in or operating significantly in Southern California and the broader West Coast.
Address: 700 Louisiana Street, Suite 3950, Houston, TX 77002
To cater to the unique communication needs of the robust energy industry and other major corporations headquartered in the Southwest region.
Address: 1700 K Street NW, Suite 750, Washington, D.C. 20006
To provide clients with strategic counsel at the intersection of business, policy, and public opinion in the nation's capital.
Address: 300 North LaSalle Street, Suite 4825, Chicago, IL 60654
To offer localized expertise and support to major corporations and organizations based in Chicago and the broader Midwest region.
Address: One Embarcadero Center, Suite 2210, San Francisco, CA 94111
To provide specialized communications counsel to the dynamic and fast-evolving technology and innovation ecosystem of Northern California.
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As of April 2025, Abernathy MacGregor Group' leadership includes:
Abernathy MacGregor Group has been backed by several prominent investors over the years, including:
Abernathy MacGregor's executive team has shown stability over the past 12 months. Key leadership changes impacting Abernathy MacGregor are typically integrated within the broader H/Advisors network announcements, such as Tom Johnson's appointment to Co-Global CEO of H/Advisors in March 2024, while retaining his role as CEO of Abernathy MacGregor. No other major distinct new hires or departures at the top executive level solely within Abernathy MacGregor have been prominently announced in the past 12 months.
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Abernathy MacGregor Group commonly uses an email format combining the first initial of an employee's first name with their full last name. Other formats may exist within the organization.
[first_initial][last_name]@abmac.com
Format
jdoe@abmac.com
Example
75%
Success rate
PRWeek • March 7, 2024
Tom Johnson, CEO of Abernathy MacGregor and then Co-CEO of H/Advisors North America, was appointed to co-lead H/Advisors globally alongside Ben Harrington, following the departure of global CEO Neil Schilling. This highlights the significant role of Abernathy MacGregor's leadership within the global Havas network....more
Synopsys / Ansys Official Press Release (via Business Wire) • January 16, 2024
Abernathy MacGregor, as part of H/Advisors, served as a key communications advisor to Ansys in connection with its definitive agreement to be acquired by Synopsys for approximately $35 billion. This transaction represented one of the largest technology deals of the year, showcasing the firm's expertise in high-stakes M&A communications....more
Business Wire • October 12, 2023
Abernathy MacGregor, as part of H/Advisors, provided strategic communications counsel to Estrella Immunopharma (dba Estrella Vision) regarding its business combination with TradeUP Acquisition Corp. and subsequent listing on the Nasdaq Stock Market under the ticker 'ESLA'. The firm supported Estrella through this critical capital markets transaction....more
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