The group is based in Newport Beach, California, with co-headquarters in Stamford, Connecticut and regional offices in Chicago, Illinois, Boston, Massachusetts, Red Bank, New Jersey, and Detroit, Michigan.

Soon thereafter, Walter Mischler, then a senior manager for a regional securities brokerage in Southern California whose earlier career path began as a graduate of the United States Military Academy, and who then served two tours in the Vietnam War before sustaining injuries that led to his receiving a service-disabled certification, was determined to create his own investment firm and leverage the resources and opportunities provided to service-disabled veterans under recent state, and soon thereafter, federal legislation.

[6] After sustaining combat injuries that led to his service-disabled veteran certification and leaving the military, Mischler worked in sales for companies like Procter & Gamble, Squibb Pharmaceutical, and Black & Decker.

Chamberlain is a graduate of the United States Military Academy at West Point, where he received a Bachelor of Science Degree in mechanical engineering management, and thereafter he served 6 years as an officer in the U.S. Army before he sustained injuries in the line of duty that led to his being certified as service-disabled.

Prior to being appointed CEO of Mischler Financial Group in 2013, Chamberlain's Wall Street career included senior roles for leading investment banks.

[17] Mischler has played a role as underwriting manager, co-manager and or selling group member on behalf of dozens of Fortune corporations in the course of their issuing billions of dollars of new debt and equity issuance.

Mischler Financial Group has helped to underwrite debt capital market deals for among others, GE Capital, Fannie Mae, Bank of America, Chevron Corporation, PG&E, Goldman Sachs, Citigroup, Toyota Motor Credit Corporation, and has been awarded mandates to serve as co-manager and/or selling group member for a number of the most widely followed initial public offerings (IPOs), including Uber,[18] Lyft,[19] Snap Inc,[20] Alibaba[21] and Twitter.