A share buyback uses company cash (or debt) to repurchase equity from existing shareholders rather than raising new primary capital.

How it works

The board authorizes a repurchase program with price, eligibility, and size caps. In private companies, buybacks often appear as tender offers — employees and early investors sell into a fixed pool at a set price. Public companies announce open-market or accelerated repurchases, often when management believes stock is undervalued.

Repurchased shares may retire (reducing dilution) or sit in treasury. Buybacks differ from secondary sales funded by outside buyers — here the company is the buyer.

Tax, securities law, and charter restrictions apply; preferred consent may be required if common is bought while preferred remains outstanding.

Why it matters

• Founders: Buybacks can reward long-tenured employees without a full secondary round — but spending scarce cash has opportunity cost vs R&D and GTM.
• Investors: They evaluate fairness (pro rata access), signaling (exit delay?), and impact on runway and valuation marks.

Common mistake

Running a buyback that only executives can access — other shareholders and employees treat it as a governance red flag.

Related ideas

• Secondary for employees
• Secondary liquidity
• Tender offers and cap table cleanup