First Security Corporation was a multistate bank holding company in the western United States, primarily in Utah, Idaho, New Mexico, Oregon, Nevada, and Wyoming. Headquartered in Salt Lake City, Utah, First Security merged with Wells Fargo in 2000.
|Founded||June 1929Ogden, Utah, USin|
|Founders||Marriner Stoddard Eccles, George S. Eccles|
|Fate||acquired by Wells Fargo|
|Headquarters||Salt Lake City, Utah, United States|
|Western United States|
|George S. Eccles, CEO|
|Website||Archived official website at the Wayback Machine (archived December 5, 1998)|
David Eccles who emigrated to Utah from Scotland in 1863 had a founding interest in Utah International, which was later inherited by Marriner and George Eccles. The two sons, together with Marriner A. Browning, expanded their financial interests to 17 banks and a building and loan company, later brought under one holding company, First Security Corporation, in June 1928.
In 2000, First Security was absorbed into Wells Fargo. First Security stockholders received 0.355 of a share of Wells Fargo common stock in exchange for each share of First Security common stock. 
- "History of First Security Corporation". fundinguniverse.com.
- "Wells Fargo & Company and First Security Corporation Merger Press Release". sec.gov. 2000-04-09. Archived from the original on 2012-12-17.