Primary vs. Secondary Shares
Primary shares are newly created by the company and sold in the offering; the proceeds go to the company. Secondary shares already exist and are sold by whoever owns them; the proceeds go to those sellers.
Most IPOs contain both. The split determines how much of a headline figure the company actually receives, and it is printed on the cover of the prospectus.
What are primary shares?
Shares the company issues for the first time in the offering itself.
They did not exist before pricing. The company creates them, sells them, and books the proceeds — less the underwriting discount and its own expenses — as cash on its balance sheet. Total shares outstanding rises by exactly the number issued, which is where IPO dilution comes from.
When a company says it is going public to fund expansion, repay debt, or strengthen its balance sheet, it is describing the use of primary proceeds.
See Use of proceeds · IPO dilution.
What are secondary shares?
Shares already owned by existing holders, sold by them in the offering.
The sellers are named in the prospectus as selling stockholders — typically venture funds, private equity owners, founders, or early employees. Their shares transfer to new investors, and the cash goes to them. The company's share count does not change and the company receives nothing from these shares.
A selling stockholder is not doing anything irregular. An IPO is frequently the first realistic opportunity for a holder of a decade-old private position to sell any of it.
Where is the split disclosed?
On the prospectus cover, and again in the Use of Proceeds section.
The cover's price table separates proceeds to the company from proceeds to the selling stockholders. If there is a secondary component, the Use of Proceeds section states plainly that the company will not receive any of the proceeds from shares sold by selling stockholders — close to verbatim across most deals, which makes it easy to find.
The Principal and Selling Stockholders table then names each seller, their holdings before the offering, the shares they are selling, and their holdings after.
See How to read an IPO prospectus · What is Form 424B4?.
Why does the split change what "raised $2 billion" means?
Because only the primary portion is capital raised by the business.
A $2 billion offering that is entirely primary puts roughly $2 billion, less fees, into the company. The same $2 billion offering split evenly puts roughly $1 billion into the company and roughly $1 billion into the pockets of existing holders. Both are accurately described as $2 billion offerings, and they are completely different events for the business.
Coverage routinely quotes the combined figure without the split. We report the deal size and the primary and secondary components separately, because the combined number on its own cannot tell you what the company received.
See Methodology.
Does a large secondary component signal anything?
It is a data point, not a verdict, and the reasonable readings cut both ways.
The concerning reading: the people who know the business best are converting a large part of their stake to cash at the moment outside investors are buying in, and they are doing it at a price they helped set.
The benign reading: early backers have held illiquid positions for years and have their own investors to return capital to, and a founder selling a small slice while retaining control is removing a personal financial pressure rather than signalling a view on the company. Some offerings are structured with a secondary component specifically to create enough float to trade well.
What makes the difference is proportion and who. A fund exiting part of a decade-old position reads differently from a chief executive selling a large share of their own holding. Both are in the same table, and the table is where the answer is.
See How to analyse an IPO · IPO risk factors.
Does "secondary shares" mean the same thing as "secondary offering"?
No, and this is the most common terminology error in IPO coverage.
Secondary shares describes who is selling — existing holders rather than the company — within any given offering, including the IPO itself.
Secondary offering usually describes when — an offering that comes after the IPO. Those are more precisely called follow-on offerings, and they can themselves be primary, secondary, or both.
The two ideas are independent. An IPO can contain secondary shares. A follow-on offering can be entirely primary. When a source says "secondary," check which sense is meant; the cover page settles it.
See What happens after an IPO?.
How does the split interact with dilution?
Only primary shares dilute. Secondary shares transfer ownership without creating any.
Issuing new shares increases the total outstanding, so each existing share represents a smaller fraction of the company. Selling existing shares changes the name on the register and nothing else.
This is why an offering with a heavy secondary component can be large in dollar terms while barely moving the dilution tables in the prospectus.
See IPO dilution.
Is the greenshoe primary or secondary?
Either, and the prospectus specifies which.
Most commonly the over-allotment option is granted by the company over newly issued shares, so exercising it raises additional primary capital. In some deals the selling stockholders grant it over their existing shares, in which case exercise raises nothing for the company.
It matters for proceeds figures, because a deal's total is frequently quoted both before and after the option is exercised.
See Greenshoe option.
Quick answers
Which one does the company get money from? Primary shares only.
Can an IPO be entirely secondary? Yes. The company raises nothing and the offering exists to give existing holders liquidity and create a public market.
Are selling stockholders locked up? Shares they retain are almost always subject to the standard lock-up. The shares they sold in the offering are free to trade. See IPO lock-up period.
Where do I find who is selling? The Principal and Selling Stockholders table in the prospectus.
Does a direct listing have primary shares? Historically no. Exchange rules now also permit a direct listing that raises primary capital. See IPO vs. direct listing.
Related
Use of proceeds · IPO dilution · How to read an IPO prospectus · What is Form 424B4? · IPO lock-up period · How much does an IPO cost?
Sources
- Securities Act of 1933 registration requirements and prospectus disclosure
- SEC Regulation S-K, Item 504 — use of proceeds
- Issuer registration statements and final prospectuses on EDGAR — cover page, use of proceeds, and principal and selling stockholders tables
- The IPO Radar filing and pricing database — Methodology