An IPO advisor is the investment bank or financial professional you hire to guide your company through the process of going public. They manage the valuation, SEC registration, prospectus drafting, investor outreach, roadshow, and share pricing. Without them, most companies could not navigate the legal, regulatory, and market complexity of an initial public offering.
The lead advisor is called the lead underwriter, bookrunner, or left-lead bookrunner. They bear primary responsibility for the outcome and typically agree to buy the offered shares from you and resell them to investors, taking on financial risk in exchange for an underwriting fee.
Your lead underwriter commits to far more than executing a stock sale. Their work spans the entire IPO lifecycle.
Large IPOs typically involve multiple banks. The lead bookrunner runs the process. Co-managers participate in selling shares to their investor networks, earning smaller fees in exchange. Co-managers often add value in retail distribution or in reaching institutional investors the lead bank does not cover well.
Think of it like a real estate listing: one broker leads the deal, and others bring buyers to share in the commission.
The underwriting agreement sets the precise terms: number of shares, offering price, fee percentage, and the overallotment option, also called the greenshoe. The greenshoe allows underwriters to sell up to 15% more shares than originally planned and then buy them back to stabilize the price.
Orrick, a law firm with deep IPO practice, advises companies to evaluate several criteria when selecting a bookrunner. The key questions to ask each candidate include:
Underwriting compensation is called the gross spread. It is deducted from the offering proceeds before the company receives its cash. For most US IPOs, the gross spread runs between 5% and 7% of total proceeds raised. On a $500 million IPO, that represents $25 to $35 million in fees split among the underwriting syndicate.
Your lead bookrunner will also likely become your long-term investment bank for follow-on offerings, acquisitions, and debt transactions. The IPO relationship is the beginning of a banking relationship, not a one-time transaction, which makes choosing the right advisor one of the most consequential decisions you will make as you prepare to go public.