Mais uma sugestão.
Also know as a sponsor.
Typically the manager or general partner of a private equity or venture capital investment fund.
https://law.academic.ru/7477/equity_sponsor

These transactions create new, private organizations that are financed through a combination of equity from private equity sponsors, as well as debt from a number of sources. Although temporary almost by definition, since the private equity sponsor has a fiduciary responsibility to exit the investment in a
relatively short period of time, these transactions nonetheless account for an increasingly large fraction of corporate finance.

Private equity sponsors (also referred to as financial sponsors) seek to acquire companies that they can grow or improve (or both) with a view toward eventual sale or public offering.
In today’s challenging economic climate, private equity sponsors are trying to figure out how to fill funding gaps in acquisition financings — and how to provide additional capital to their troubled portfolio companies.

Para Jonathan Klonowski, research editor EMEA da Mergermarket refere que este ano se tem verificado um aumento considerável em M&A em Portugal, sendo que “a recuperação em curso deverá fazer com que empresas e patrocinadores financeiros continuem ativos em 2019”.

As LBOs são uma ocorrência muito comum no ambiente "Fusões e Aquisições" (M & A) de hoje. O termo LBO é geralmente empregado quando um patrocinador financeiro adquire uma empresa.

https://www.google.pt/search?q="patrocinadores financeiros" ...