Guy Carpenter Launches Cyber Solutions Specialty Practice

New York, NY (Feb. 21, 2014) – Guy Carpenter & Company, LLC, the leading global risk and
reinsurance specialist and member of Marsh & McLennan Companies, has
announced the launch of its Cyber Solutions Specialty Practice, which focuses on the development
and delivery of innovative cyber reinsurance solutions to address the rapidly increasing risks
associated with cyber security. The practice builds upon Guy Carpenter’s market leadership position
and years of experience and market intelligence in this area, and through its team of highly seasoned
professionals, helps clients effectively manage their cyber portfolios and grow profitably.

Guy Carpenter was the first reinsurance broker to enter this emerging and highly dynamic market over
16 years ago. In 1999 Guy Carpenter pioneered the first-ever cyber-liability reinsurance product to
address the relatively unknown exposures of this segment. Since entering this market, Guy Carpenter
has become the recognized leader, currently representing approximately 65% of cyber liability writers in
the global reinsurance market today.

“Rapidly-developing computer technology and the unrelenting evolution of cyber risks presents one
of the biggest challenges to the (re)insurance sector today. In fact, cyber-attacks, along with
technology failure, represent a greater threat than adverse weather, fire and social unrest combined,”
said Jeremy Platt, Co-Leader of the Cyber Solutions Specialty Practice.

Guy Carpenter’s Cyber Solutions Specialty is uniquely positioned to explore and develop solutions
that evolve beyond the traditional quota share reinsurance approach to cyber liability. In the 4th
Quarter of 2013, the practice designed and implemented a new “Cyber Cat” product that responds to
the systemic risk inherent in cyber portfolios. “Our clients require comprehensive solutions to
manage the accumulation and concentration of cyber liability to large loss and systemic events. We
have and continue to develop new ways to address the correlation within a cyber-portfolio,” stated
Mike Brown, Co-Leader of Guy Carpenter’s Cyber Solutions Specialty Practice.

“Guy Carpenter’s extensive experience in this arena and 90+ year track record for delivering leading
reinsurance broking solutions creates the most powerful and unrivaled offering in the market today.
As we have done for the past 16 years, we will continue to invest in creating cyber solutions that help
our clients identify, mitigate and transfer an evolving range of risks,” Mr. Brown said.

Guy Carpenter’s Cyber Solutions Specialty Practice, led in North America by Mike Brown and
Jeremy Platt and in the UK and Europe by Morley Speed and Carolyn Morley, has assisted in placing
standalone cyber liability treaties for mature and emerging portfolios and created innovative solutions
for regional and mutual carriers. Guy Carpenter’s industry-leading database helps clients understand
probable losses in their growing cyber risk portfolios and manage the impacts of changing exposures
with confidence.

To learn more about how Guy Carpenter’s Cyber Solutions Specialty Practice can help clients
achieve profitable growth, please visit GC Specialties.

About Guy Carpenter

Guy Carpenter & Company, LLC is a global leader in providing risk and reinsurance intermediary services. With
over 50 offices worldwide, Guy Carpenter creates and executes reinsurance solutions and delivers capital
market solutions* for clients across the globe. The firm’s full breadth of services includes line-of-business
expertise in agriculture; aviation; casualty clash; construction and engineering; excess and umbrella; life,
accident and health; marine and energy; medical professional liability; political risk and trade credit;
professional liability; property; retrocessional reinsurance; surety; terrorism and workers compensation. GC
Fac® is Guy Carpenter’s dedicated global facultative reinsurance unit that provides placement strategies,
timely market access and centralized management of facultative reinsurance solutions. In addition, GC
Analytics®** utilizes industry-leading quantitative skills and modeling tools that optimize the reinsurance
decision-making process and help make the firm’s clients more successful. For more information, visit

Guy Carpenter is a wholly owned subsidiary of Marsh & McLennan Companies (NYSE: MMC), a global team of
professional services companies offering clients advice and solutions in the areas of risk, strategy and human
capital. With 54,000 employees worldwide and annual revenue of $12 billion, Marsh & McLennan
Companies is also the parent company of Marsh, a global leader in insurance broking and risk management;
Mercer, a global leader in talent, health, retirement, and investment consulting; and Oliver Wyman, a global
leader in management consulting.

*Securities or investments, as applicable, are offered in the United States through GC Securities, a division of MMC Securities Corp., a US
registered broker-dealer and member FINRA/SIPC. Main Office: 1166 Avenue of the Americas, New York, NY 10036. Phone: (212) 345-5000.
Securities or investments, as applicable, are offered in the European Union by GC Securities, a division of MMC Securities (Europe)
Ltd., which is authorized and regulated by the Financial Services Authority. Reinsurance products are placed through qualified affiliates of
Guy Carpenter & Company, LLC. MMC Securities Corp., MMC Securities (Europe) Ltd. and Guy Carpenter & Company, LLC are affiliates
owned by Marsh & McLennan Companies. This communication is not intended as an offer to sell or a solicitation of any offer to buy any
security, financial instrument, reinsurance or insurance product.

**GC Analytics is a registered mark with the U.S. Patent and Trademark Office.