Secondary Market (Private Stock)

A way for employees and early investors to sell shares in private companies before an IPO or acquisition — through platforms or company-run tender offers.

The secondary market for private company stock refers to transactions where current or former employees (and early investors) sell their shares to third-party buyers before the company goes public or is acquired. Because private company shares are otherwise illiquid — you can't sell them on a stock exchange — secondary market transactions provide early liquidity. Platforms like Carta, Forge Global, and Nasdaq Private Market facilitate these transactions, along with direct sales to institutional investors or via company-organized tender offers.

Company-run tender offers are the most common form of secondary liquidity. In a tender offer, the company (or a lead investor) offers to buy back shares from employees at a specified price within a defined window. These are usually announced after a funding round that establishes a new valuation, and they allow employees to sell a portion (often 10–25%) of their vested shares. Tender offers require company approval and typically require the company's right of first refusal (ROFR) to be satisfied.

Third-party secondary sales are more complex. Most equity agreements require company approval for any transfer, and the company's right of first refusal allows it to match any outside offer and buy the shares itself. Some companies actively facilitate secondary sales; others block them entirely — often to prevent a 'shadow market' that complicates the cap table or reveals valuation data. If your company restricts secondary sales, you may have limited options for liquidity until an IPO or acquisition.

How Tender Offers Work

  • Company announces a tender offer window, typically 20–30 days, at a specified price per share.
  • Eligible employees select how many vested shares to sell, up to the allowed percentage.
  • Proceeds are paid out minus any spread between exercise price and sale price, plus applicable taxes.
  • The tender price may differ from the 409A valuation — it's typically set at the preferred share price from the latest funding round.
  • Not all employees are always eligible — tender offers sometimes prioritize early employees or those below a certain grant size.

Tax Implications

  • Long-term capital gains rates apply if you've held the shares for more than one year.
  • If you exercised ISOs and then sell in a secondary, you may trigger AMT depending on timing and price.
  • NSO exercises and same-day secondary sales create ordinary income on the spread.
  • Consult a tax advisor before participating in a tender offer — the right timing can save significant money.
  • 83(b) elections can affect whether secondary sale proceeds are treated as short-term or long-term gains.