Piggyback rights—also called tag-along rights—allow minority holders to participate proportionally when a majority or significant shareholder sells shares to a third party.

How it works

Investor rights agreements specify that if founders or a lead VC sell more than a threshold stake, other piggyback holders may include their shares in the sale on identical terms. The buyer purchases a larger block or the primary seller reduces their sale to make room. Piggyback complements drag-along (majority forcing minorities to sell in an acquisition).

Secondary transactions and strategic sales trigger piggyback analysis. Lawyers coordinate notice periods and pro rata calculations across common and preferred.

Buyers sometimes cap total secondary volume or exclude small holders to keep cap tables tidy—piggyback holders may need to sell less than their full pro rata if the buyer sets a block limit. Check investor rights agreements for minimum sale thresholds that trigger piggyback.

Drag-along and piggyback interact in acquisitions—majority may force sale while piggyback ensures minorities can join on the same price if they choose within the tag window.

Why it matters

• Founders: Personal secondaries may require offering piggyback to investors, affecting deal size and buyer appetite.
• Investors: Ensures partial liquidity when insiders exit and prevents asymmetric information advantages in private sales.

Tag-along notice periods are strict—missing the window forfeits the right to sell alongside insiders.

Common mistake

Confusing piggyback with drag-along. Piggyback is optional join-in for minorities; drag-along compels everyone to sell in an approved exit.

Related ideas

See drag-along rights, secondary sales, ROFR, and investor rights agreements.