SIMPLE AGREEMENT FOR FUTURE EQUITY (SAFE)
Простое соглашение о будущем капитале - соглашение между инвестором и компанией, которое предоставляет права инвестора на акции в компании в будущем, когда произойдёт определённое событие (liquidity event). Инвестор получит акции в будущем, а инвестирует уже сейчас.

A SAFE (simple agreement for future equity) is an agreement between an investor and a company that provides rights to the investor for future equity in the company similar to a warrant, except without determining a specific price per share at the time of the initial investment. The SAFE investor receives the futures shares when a priced round of investment or liquidation event occurs. SAFEs are intended to provide a simpler mechanism for startups to seek initial funding than convertible notes.
Y Combinator introduced the SAFE (simple agreement for future equity) in late 2013, and since then, it has been used by almost all YC startups and countless non-YC startups as the main instrument for early-stage fundraising.

While the SAFE may not be suitable for all financing situations, the terms are intended to be balanced, taking into account both the startup’s and the investors’ interests.

A SAFE is neither debt nor equity, and there is no interest accruing or maturity date.