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← Our PeopleFounding Managing DirectorJack KelleherCollected Strategies
Biography

Jack Kelleher has helped clients develop and implement thoughtful communications strategies around key strategic and financial matters.

His experience includes having supported some of the largest and most complex M&A and spinoff transactions in recent years and he has advised dozens of companies in engaging with and defending against activist investors, including Starboard, Trian, JANA, Carl Icahn, and Third Point. With unique expertise in media engagement, Jack has supported companies facing a variety of crises, including reputational issues, defense against short-sellers, data breaches, earnings surprises, SEC investigations, regulatory actions, litigation, unplanned leadership changes, closures and workforce reductions.

Prior to Collected, Jack was a Managing Director at Joele Frank. He began his communications career in the Analysis and Research division of Brunswick Group’s corporate headquarters in London. He received a BA in Business and Marketing Management from Oxford Brookes University in the U.K.

M&A
  • StarBulk Carriers in its $610 million acquisition of Eagle Bulk Shipping
  • Newmont Mining in its $16.8 billion acquisition of Newcrest
  • Viad in its separation of GES
  • Veeco in its $4.4 billion all-stock combination with Axcelis
  • StandardBio in its $563 million acquisition of SomaLogic
  • MDC Holdings in its $4.9 billion sale to Sekisui House Ltd.
  • Vanda Pharmaceuticals in its defense of an unsolicited acquisition proposal
  • Alumis in its stock for stock merger with ACELYRIN
  • ContextLogic in its sale of the Wish.com brand
Shareholder Activism
  • American Homes 4 Rent (Land & Buildings)
  • Argo Group (Capital Returns)
  • Brookdale Senior Living (Land & Buildings)
  • DigitalBridge (Blackwells)
  • Humana (Starboard Value)
  • EQT Corp. (JANA Partners, D.E. Shaw, Rice Brothers)
  • Janus Henderson (Trian)
  • Olin (Sachem Head)
  • True Blue International (EHS Investments)
  • Fortune Brands (Garden Investments)
Areas of Expertise
  • Media Relations
  • M&A
  • Private Equity
  • Investor Relations
  • Spin-offs and IPOs
  • Shareholder Activism Defense
  • Real Estate
  • Financial Services
  • Mining
  • Media & Entertainment
  • Energy & Utilities
Background
  • Managing Director at Joele Frank
  • Researcher at Brunswick Group
Our Track Record
Experience that speaks for itself.
Our founding team has advised on over $3.7 trillion in transactions, 400+ activist engagements, and 80+ restructurings. See our full record of selected transactions, league table rankings, and practice area depth.
View Our Experience →
$3.7TIn transactions advised
400+Activist engagements
80+Restructurings
#3Bloomberg 2025 activism rankings