Equity issuance is one of the two fundamental ways a company raises capital (the other is borrowing). Unlike debt, shares do not have to be repaid and do not accrue interest — but they permanently transfer a fraction of ownership to whoever buys them. Understanding how the process works explains a huge amount of corporate news.
What it means to issue shares
A company begins with a fixed number of shares divided among founders, early investors, and employees. When it needs more capital — to fund expansion, acquire a competitor, or pay down debt — it can create and sell new shares to outside investors. Those investors then own a stake in the company and share in its future profits and losses.
The key tension: existing shareholders see their ownership percentage diluted. If you own 10% of a company with 1 million shares, and the company issues another 1 million shares, you now own 5% of a company with 2 million shares. Whether you are better or worse off depends entirely on what the company does with the money raised.
Initial Public Offering: going public for the first time
An IPO is the first time a company sells shares to the general public and lists on a stock exchange. Before the IPO, the company is private — shares exist but are held by founders, venture capitalists, and employees, with no liquid market. The company hires underwriting banks that help price the shares, market them to institutional investors through a roadshow, and guarantee the shares will be sold. A prospectus — a detailed disclosure document — is submitted to the financial regulator (the FCA in the UK) for approval before any public sale.
Secondary offerings and rights issues
A secondary offering happens when an already-listed company issues additional new shares — perhaps to fund an acquisition or raise cash for expansion. These dilute existing shareholders unless they participate. The new shares are typically offered at a small discount to the current market price.
A rights issue is structured specifically to protect shareholders from dilution: existing holders get the right to buy new shares in proportion to what they already own. Rights can also be sold on the open market if the shareholder does not want to invest more cash — so existing holders capture the economic value either way. Rights issues are common in the UK for large capital raises, particularly in banking.
Issuing shares is like baking a bigger pie and selling slices — existing shareholders own a smaller slice, but if the recipe works, the whole pie becomes more valuable and each smaller slice is still worth more than the original larger one.
When dilution hurts and when it doesn't
Dilution that funds an acquisition at a fair price, a new factory that generates strong returns, or critical debt reduction is value-creating. The percentage you own falls, but the value of what the company can now do rises by more. Dilution that funds operating losses, executive bonuses, or an overpriced acquisition destroys shareholder value. The market's reaction to share issuances is therefore a real-time verdict on whether investors believe the capital will be well used.