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Marsh & McLennan Companies company history timeline

1871

The company was founded by Henry W. Marsh and Donald R. McLennan in 1871 and is headquartered in New York, NY.“

1889

In 1889, following the death of Robert A. Waller, Henry Marsh and another employee, Herbert J. Ulmann, bought a controlling interest in the firm, which they renamed Marsh, Ulmann and Company.

1900

McLennan had begun an insurance agency in partnership with L.B. Manley in Duluth, Minnesota, in 1900.

1901

In 1901 Henry Marsh talked Charles Schwab, president of the United States Steel Corporation, into adopting such a scheme, with Marsh's company managing an appropriate fund to estimate potential risks to United States Steel.

During 1901, while Marsh was pursuing United States Steel, McLennan was mastering the intricacies of railroads, winning one line after another.

1904

When the two men merged their firms in 1904, the new company was the largest insurance agency in the world with annual premiums of US$3 million — and it was only the beginning.

1906

In 1906, following the retirement of Daniel Burrows, the new firm became known as Marsh & McLennan (M&M).

Burrows, Marsh & McLennan was formed by Henry W. Marsh and Donald R. McLennan in Chicago in 1905. It was renamed as Marsh & McLennan in 1906.

1917

By 1917, the year the United States entered World War I, M&M had established offices throughout the country.

1921

In 1921, Guy Carpenter met Henry Marsh and Donald McLennan during a transatlantic crossing.

1923

In 1923 the legal structure of the company was changed from a partnership to a corporation, Marsh & McLennan, Incorporated.

The reinsurance firm Guy Carpenter & Company is acquired in 1923 a year after its founding by Guy Carpenter.

1944

In 1944, William Mercer was a young economist at Canada's Powell River Company, then one of the world's largest paper manufacturers.

1955

Following Seabury's retirement and Kennedy's death in 1955, Hermon Smith became the CEO and chairman.

1957

In 1957 Cosgrove & Company, the West Coast's largest regional broker, was merged into Marsh & McLennan.

Beginning in 1957, when a stockholder died, retired, or turned 70 years old, his stock had to be sold back to the company.

1958

Given the growing complexity of the insurance business and his desire for company growth, Smith began in 1958 to explore the idea of going public.

1968

In 1968, M&M acquired Edwards George and Company of Pittsburgh, Pennsylvania, and R.H. Squire of New York City.

1969

In 1969, to administer its services more efficiently, Marsh & McLennan reorganized, and became known as MarLennan Corporation.

1970

The first of these, the Putnam Management Company, became part of M&M in 1970.

1973

John Regan, who became chief executive in 1973, was determined to transform the company into a global insurance force, and embarked on a policy of buying foreign brokerage firms in the world's major financial cities.

In 1973 MarLennan acquired a 33.3 percent interest in the French insurance brokerage Faugere et Jutheau.

1980

In 1980 Regan set his sights on C.T. Bowring, a large London brokerage firm.

1982

In 1982 insurance-program management separated from the consulting activities of Mercer to become a separate company, later called Seabury & Smith.

1984

In 1984, Alex Oliver and Bill Wyman saw that the landscape of business was about to change in fundamental ways.

1985

Lawrence J. Lasser took charge of the operation in 1985, reorganized, expanded its offerings, and subsequently produced stellar growth.

1990

In January 1990 the company completed its purchase of a majority stake in Gradmann & Holler, Germany's largest insurance broker.

1993

"Putnam's performance couldn't come at a better time," Ronald Fink wrote in a 1993 Financial World article. "Marsh's core business--property and casualty insurance brokerage--has been in a slump for over six years.

1996

1996: Rival firm Aon Corporation bumps MMC from position as top insurance brokerage.

1997

And the company has consistently recorded double-digit earnings growth," wrote Judy Temes for Crain's New York Business in 1997. "But suddenly, being good isn't good enough.

In 1997, the company bought Johnson & Higgins and Sedgwick shortly after.

1999

MMC trimmed back its insurance-related purchases in 1999 but planned for more acquisitions in the consulting area.

2000

In terms of numbers, revenue topped the $10 billion mark in 2000, and net income rose by 23 percent to $1.2 billion.

2003

In 2003, it purchased the consultancy business Oliver, Wyman & Company and merged these with some of the consultancy businesses it already had from previous acquisitions, particularly the Mercer business under the brand name of Oliver Wyman.

2007

The company became Mercer in 2007.

2008

Mercer And Tesi Merge 2008

2010

Mercer announced in July 2010 that it had acquired Innovative Process Administration, LLC (IPA), a privately owned, health and benefits administration technology provider.

2011

Mercer announced in July 2011 that it signed a definitive agreement to acquire Ft.

2012

Mercer announced acquired Alicia Smith & Associates, a nationally-known Medicaid policy consulting firm based in Washington, DC, in January 2012.

2013

Mercer announced in September 2013 that it had acquired Global Remuneration Solutions (Pty) Ltd. (GRS), a leading compensation and benefits survey data and rewards information provider headquartered in South Africa.

2014

In March 2014, Mercer reached a definitive agreement to purchase Transition Assist, a retiree exchange specializing in helping retirees in employer-sponsored plans select Medicare supplemental health care insurance.

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