[5]In 1955, shortly after graduating from Cornell University, Weill began his first job on Wall Street, serving as a runner for Bear Stearns.

[6] Rather than making phone calls or personal visits to solicit clients, Weill found he was far more comfortable sitting at his desk, poring through companies' financial statements and disclosures made to the U.S. Securities and Exchange Commission.

For weeks his only client was his mother, Etta, until his later to be wife, Joan, persuaded an ex-boyfriend to open a brokerage account.

[11] While at American Express, Weill began grooming his newest protégé, Jamie Dimon, the future CEO of JPMorgan Chase.

After an attempt to become the CEO of BankAmerica Corp., he persuaded Minneapolis-based Control Data Corporation to spin off a troubled subsidiary, Commercial Credit, a consumer finance company.

Ever since the passage of the Glass–Steagall Act of 1932, during the presidential administration, of 31st President, Herbert Hoover (1874–1964, served 1929–1933), the fields of banking and insurance businesses had been kept separate.

These entities were identified in the infamous Panama Papers scandal, a release in 2016 of secret financial documents dating back to the 1970s, of off-shore overseas / foreign money deposits and secret bank accounts of millions of dollars of wealthy Americans and others hiding them for federal / state income tax purposes.

[14] In 2002, the financial company was hit by the wave of Wall Street managerial restructuring that followed the earlier stock market downturn of 2002.

His Golden Plate was presented by Awards Council member, retired U.S. Army General and former Chairman of the Joint Chiefs of Staff and also later U.S. Secretary of State, Colin Powell (1937–2021).

Weill Cornell established the first American medical school overseas in Doha, the modernist capital city of the emirate State of Qatar in the Middle East / Persian Gulf region, in 2001.

This was made possible through a special partnership between Weill Cornell and the Qatar Foundation for Education, Science and Community Development.

a 380-bed specialty teaching hospital was scheduled to open in 2014, also in the emirate State of Qatar in the Middle East / Persian Gulf.

He serves as Founder and Chairman of the National Academy Foundation (NAF), which oversees more than 100,000 students in 617 career-themed academies of finance, hospitality and tourism, information technology, engineering, and health sciences, in 35 states, as well as the District of Columbia (Washington, D.C.) and the U.S. Virgin Islands (in the Caribbean Sea / West Indies islands).

He previously served as the chairman of the Board of the famous 19th century concert hall / auditorium of Carnegie Hall, built 1891 on Seventh Avenue (between 56th and 57th Streets, in Manhattan), of New York City, until 2016, and both he and his wife Joan are avid champions and lovers of classical music in the United States, frequently attending various concerts across the country.

The 1997 recipient of the New York State Governor's Art Award, Weill has been chairman of the Board of Trustees of Carnegie Hall since 1991.

[21] In 2002, the Joan Weill Adirondack Library and Joan Weill Student Center were dedicated at the Paul Smith's College in the small hamlet / village of Paul Smiths, New York, (near the larger town of Brighton in Franklin County of the Adirondacks Mountains region of northern Upstate New York), where she was a trustee.

In March 2011, the Weills announced a $12 million gift to nearby Sonoma State University, providing the funds to complete the Donald and Maureen Green Music Center concert hall for a fall 2012 opening.

[27] In 2011, Rambam Medical Center in Haifa on the Mediterranean Sea northern coast of the State of Israel and its supporting organization of the American Friends of the Rambam Medical Center announced that Joan and Sandy Weill and the Weill Family Foundation made a donation of $10 million.

In addition, the money was intended to support the Israeli-Palestinian Friendship Center and enable the hospital to better serve patients from the Palestinian / Arab-populated areas of the Gaza Strip and the West Bank by making residential hostel facilities available to their families while providing advanced medical training to Palestinian residents, fellows, and nursing staff.

[30] In September 2013, Weill and his wife wrote an op-ed article for the CNBC business / financial news cable television network, stating that philanthropy goes beyond just money.

Paul Smith's then applied to the New York State Supreme Court in the state capital of Albany, for a release from the naming clause of Phelps Smith, the 1937 donor's will, arguing that its continued future financial survival depended on receipt of trustee Mrs. Weill's generous $20 million gift.

[32] In 2016, Sandy and Joan Weill announced a $185 million contribution to the University of California at San Francisco (UCSF) for a new neuroscience institute.

The Weill Institute for Neurosciences is now currently housed in a $316 million facility at UCSF's Mission Bay campus in San Francisco.