Secfi secured a second facility from Serengeti for $150 million, following the original $550 million facility from January 2020 and bringing the total to $700 million. The new capital extended stock option financing to executives and employees at very late-stage startups approaching an exit. At the time Secfi worked with employees from 80% of US-based unicorns and had over $10 billion of startup stock options registered on its platform, providing non-recourse financing so employees could exercise without paying out of pocket. Serengeti angle: the direct ancestor of the Private Stock Finance strategy — strongest historical proof point for that page.