American Healthcare Investors and its affiliates served as the co-sponsor (along with Griffin Capital Corporation) and manager of Griffin-American Healthcare REIT II from January 2012 until December 2014. Under the company's stewardship, Griffin-American Healthcare REIT II expanded its portfolio of medical office buildings, hospitals, seniors housing and skilled nursing facilities to nearly $3 billion of assets located throughout the United States and the United Kingdom, based on aggregate purchase price. Ultimately, Griffin-American Healthcare REIT II merged with NorthStar Realty Finance Corp. (NYSE: NRF) in a transaction valued at approximately $4 billion on December 3, 2014.
In February 2014, Griffin-American Healthcare REIT III was launched to provide an additional healthcare real estate investment opportunity to individual investors. Again co-sponsored by American Healthcare Investors and Griffin Capital Corporation, the REIT proved extraordinarily popular among investors, raising approximately $1.9 billion by February 2015. American Healthcare Investors has thus far acquired a diverse portfolio of healthcare real estate on behalf of the stockholders of Griffin-American Healthcare REIT III valued at approximately $3 billion, based on aggregate contract purchase price as of September 30, 2018.
With the portfolio buildout of Griffin-American Healthcare REIT III essentially complete, in February 2016 Griffin-American Healthcare REIT IV was launched to once again provide individual investors with an opportunity to invest in healthcare real estate. Griffin-American Healthcare REIT IV purchased its first property in June 2016 and as of January 2019 has acquired a 3.8 million-square-foot portfolio of 69 medical office buildings, senior housing facilities and skilled nursing facilities located in 21 states, in addition to an interest in a joint venture which owns and operates a portfolio of integrated senior health campuses and ancillary businesses, for an aggregate contract purchase price of approximately $914.8 million. Additionally, the company is pursuing approximately $109.5 million in additional pending acquisitions1 which would result in a total portfolio of approximately 99 healthcare buildings located in 22 states comprised of approximately 4.6 million square feet of gross leasable area upon the successful completion of these potential acquisitions.
In total, American Healthcare Investors manages an international portfolio of healthcare real estate valued in excess of $4 billion on behalf of multiple investment programs that include thousands of individual and institutional investors.
(1) Comprised of prospective real estate acquisitions for which the company has executed letters of intent and/or purchase and sale agreements as of December 31, 2018. These prospective acquisitions are subject to substantial closing conditions and the satisfaction of other requirements as detailed in the agreements. Accordingly, the closing of some or all of these pending transactions may not occur.