Health insurer Humana quietly funded 40 of Iora Health’s 47 primary care clinics, according to a Securities and Exchange Commission registration statement obtained by Business Insider.

The filing also showed the Humana-funded clinics exclusively served Humana members until July 2020.

Humana CEO Bruce Broussard told Business Insider earlier this year that the company had begun investing in other startup healthcare companies to see which would succeed. He also said the payer sees better outcomes and lower costs among members who go to clinics focused on providing care to older populations.

Iora Health serves 38,000 patients in eight states, according to the article.