In private markets, a primary investment refers to capital that flows directly into the company — new shares are issued, and the company receives the proceeds to fund operations, growth, or acquisitions. A secondary investment involves buying existing shares from a current shareholder (founder, employee, or earlier investor), with the proceeds going to the seller rather than the company.
Many funding rounds include both primary and secondary components simultaneously: new shares are issued to raise growth capital (primary), while existing shareholders sell a portion of their holdings to provide liquidity (secondary). Understanding this distinction matters for assessing how much new capital a company actually received versus how much went to early investors cashing out.