ECM Deals: Transaction Types, Underwriting, and Process

Equity capital markets deals, usually shortened to ECM deals, are transactions in which a company raises money by selling ownership stakes to investors. The shares can be brand new ones the company creates, or existing shares held by founders and early backers. Either way, the sale runs through a framework set by the Securities and Exchange Commission, involves investment banks as intermediaries in most cases, and typically takes three to six months from the moment a company hires its bankers to the day the stock changes hands. The company might be a startup going public for the first time or a Fortune 500 name raising another billion dollars; the mechanics rhyme.

The Main Types of ECM Transactions

There is no single template. The right structure depends on whether the company is already public, how fast it needs the money, how much dilution it can absorb, and which investors it wants on the register.

Initial Public Offerings

An IPO is the first sale of a private company’s stock to the public. Once it closes, the company is a reporting issuer and must file annual, quarterly, and current reports with the SEC on an ongoing basis.¹ The registration statement filed to go public describes the business, the securities being offered, management, and audited financials.²

For founders and early investors, the IPO is often the first real chance to turn paper wealth into cash, though lock-up agreements delay that liquidity for months. For the company, proceeds fund operations, pay down debt, or bankroll acquisitions. The cost is real: continuous disclosure, activist pressure, and the short-term earnings focus that comes with a visible share price.

Follow-on Offerings

Public companies raise more money through follow-ons. In a primary follow-on, the company issues new shares and keeps the cash. This dilutes existing shareholders because more shares now split the same company value. In a secondary follow-on, existing holders sell shares they already own; the company gets nothing and the share count stays flat. Many deals combine both, with the company issuing new shares while insiders sell part of their positions in the same transaction.

At-the-Market Offerings

An at-the-market (ATM) offering lets a public company drip new shares into the existing trading market at prevailing prices rather than dumping a block at one fixed price. The rules define it as a sale of equity into an existing trading market at other than a fixed price, and require an effective shelf registration on Form S-3.³ A broker-dealer sells small amounts over days or weeks, which limits the price impact and avoids the expense of a marketed deal.

Rights Offerings

In a rights offering, the company hands its existing shareholders the first shot at buying new shares, usually at a discount to the market price. Each holder gets subscription rights in proportion to what they already own. If the rights are transferable, holders who do not want more stock can sell the rights on the market. If not, unused rights simply expire. Sometimes a standby underwriter agrees to buy any shares existing holders decline.

Convertible Securities

Convertible bonds and preferred stock are fixed-income instruments that can be exchanged for common shares at a set price. The company gets a lower interest rate than it would pay on straight debt, and investors accept the lower yield because they get upside if the stock climbs above the conversion price. Immediate dilution is avoided, since conversion only happens if the stock rises far enough to make it worthwhile. Growth-stage issuers reach for convertibles when they believe their common stock is temporarily undervalued and selling it outright would give away too much ownership.

PIPEs

A private investment in public equity, or PIPE, sells stock or convertibles directly to a small group of institutional or accredited investors, usually at a discount. PIPEs close faster than registered offerings because they skip the roadshow. The shares come out unregistered and carry resale restrictions, but the company typically agrees to register them shortly after closing. Smaller public companies use PIPEs when they need cash quickly, and larger companies use them when market conditions would sink a traditional deal.

Direct Listings

A direct listing puts a company on an exchange without underwriters and, in the original form, without new shares. Existing holders simply sell into the market on the first day of trading. The SEC has approved a NYSE rule allowing companies to raise primary capital through direct listings too, with the company selling new shares in the opening auction.⁴ There is no guaranteed capital raise, no price stabilization, and no lock-up. Companies that pick this route are usually well-known names with enough natural demand that they do not need a bank to build a book, and they skip millions in underwriting fees.

Who Underwrites the Deal, and What They Get Paid

Investment banks sit in the middle of most ECM transactions. The type of commitment they make decides who eats the loss if the market cools between pricing and settlement.

Firm Commitment vs. Best Efforts

Under a firm commitment, the bank buys every share from the company at a negotiated price and resells to investors at a slightly higher one. If demand falls short, the bank takes the loss. Issuers prefer this because it locks in the dollar amount at closing. The gap between what the bank pays the company and what investors pay the bank is the underwriting spread.

For IPOs raising up to about $200 million, a gross spread of exactly 7% is the norm. Among IPOs in that size range between 2001 and 2025, over 86% carried a spread of precisely 7%. Larger deals get better economics: IPOs raising $1 billion or more averaged roughly 4.4%, and mega-deals from Visa, General Motors, and Facebook came in as low as 0.75% to 2.8%.⁵ Follow-ons by established public companies generally price at lower spreads because the shares already trade.

A best efforts commitment is the alternative. The bank agrees only to try; if demand is soft, the company raises less. An all-or-none variation cancels the whole deal if a minimum threshold is not met. Both push market risk back onto the issuer and show up more often in smaller or speculative offerings.

Syndicates

Large deals rarely go through one bank. The lead underwriter builds a syndicate of investment banks that share the financial exposure and bring their own distribution to the table. The lead bookrunner manages the registration, coordinates diligence, and builds the order book. Co-managers help sell shares and get a smaller slice of the fees. The point is reach: putting the deal in front of the widest possible pool of institutional buyers.

FINRA Review of Fees

Underwriting compensation is not left to the parties alone. FINRA reviews the terms of every public offering before shares can be distributed and must find that the arrangement is not unfair or unreasonable.⁶ Members file engagement letters, underwriting agreements, and a maximum-value estimate for each item of compensation before marketing begins. If FINRA objects, the managing underwriter has to tell the syndicate and rework the deal.

How the Process Moves From Engagement to Trading

A full-scale public equity offering runs through a sequence of stages that typically fills three to six months. Every stage requires tight coordination among the company, its lawyers, the underwriters, the auditors, and the SEC.

Engagement and Due Diligence

The company picks a lead bookrunner and signs an engagement letter setting the scope, structure, and expected spread. Comprehensive due diligence follows: the underwriters and their lawyers work through financials, material contracts, litigation, and regulatory compliance. This is not just for thoroughness. Under Section 11 of the Securities Act of 1933, underwriters face personal liability if the registration statement contains material misstatements or omissions.⁷ The only escape is proving that, after a reasonable investigation, they had reasonable grounds to believe the statements were true. That defense is what makes the cost and delay of diligence worth it.

Registration Statement and SEC Review

Lawyers draft the registration statement, which includes a prospectus covering the business, financial condition, risk factors, and the terms of the offering. It goes to the SEC, and under the Securities Act no securities can be sold until the statement is effective.⁸ Initial filings can be confidential, and the SEC has expanded the availability of nonpublic review for draft registration statements, though the company must publicly file everything at least 15 days before any roadshow.⁹

SEC staff read the filing and send comment letters asking for clarification or more disclosure. The company amends, the staff responds, and the loop repeats until the SEC declares the statement effective. That declaration is the legal green light to sell.

The Quiet Period

From the time a company is preparing to file through the effective date, federal securities laws sharply limit what the issuer and its underwriters can say publicly. This is commonly called the quiet period, though the term is not formally defined in the statutes. The worry is gun-jumping: premature communications that condition the market or give some investors an informational edge.¹⁰ Communications made more than 30 days before filing are generally allowed if they do not reference the offering, and emerging growth companies can “test the waters” with qualified institutional buyers and accredited investors both before and after filing.¹¹

The Roadshow

As SEC review closes in on completion, senior management goes on the road for one to two weeks of institutional investor meetings. It is part sales pitch, part price discovery. Management walks through strategy, positioning, and financial projections. Investors respond with how many shares they would buy and at what price. The meetings run off the preliminary prospectus, known as the red herring because it contains everything except the final price and share count.

Pricing and Closing

The final price is set the evening before trading begins, negotiated between the company and the lead bookrunner based on demand pulled in during the roadshow. The final prospectus, carrying the confirmed price and volume, is distributed right away. At closing, funds move from the underwriters to the company and the shares are delivered. Pricing to settlement is usually just a few business days.

How the Final Price and Allocations Get Set

Two decisions make or break the deal: the price of the shares and who receives them. Get the price wrong and the company either leaves money on the table or watches investors lose confidence on day one.

Book-Building

The core pricing mechanism runs alongside the roadshow. Underwriters collect non-binding indications of interest from institutions: how many shares, at what price. Those orders build a demand curve that shows the bookrunner where investor appetite concentrates. An oversubscribed book gives the company leverage to price at the top of the range. A soft book means a lower price or a restructured deal.

The bookrunner weighs orders by investor type. A hundred million from a long-term mutual fund manager who plans to hold for years carries more weight than the same amount from a hedge fund likely to flip on day one. That judgment shapes both the price and the allocation list.

Valuation Benchmarks

The starting point is where comparable public companies trade, using price-to-earnings ratios, enterprise-value-to-revenue multiples, or industry-specific measures. Comparables set the neighborhood; the actual price shifts up or down with growth trajectory, management credibility, market conditions on pricing night, and the depth of demand book-building reveals.

Allocation

Once the price is set, the bookrunner decides who receives shares. The aim is a shareholder base that supports the stock after closing. Long-term institutions who gave useful roadshow feedback get priority. Investors seen as likely to sell quickly get cut or shut out. Retail investors, participating through broker-dealers in the syndicate, usually get a smaller slice.

Careful allocation creates mild scarcity, which tends to produce a modest first-day pop. Ten to fifteen percent is generally viewed as healthy; it rewards early investors without suggesting the company drastically underpriced. Fifty percent means the company gave too much away. A first-day decline damages the underwriter’s reputation and makes future deals harder to execute.

The Greenshoe

Nearly every underwritten offering includes an overallotment option, known as the greenshoe, giving the underwriters the right to buy up to an additional 15% of the offering from the company.⁶ The 15% cap is a FINRA rule. Underwriters initially sell more shares than the base offering, creating a short position. If the stock drops below the offering price, they buy in the open market to cover, which supports the price. If it trades above, they exercise the greenshoe to buy those extra shares from the company at the offering price, covering the short and raising more capital for the issuer at the same time.¹² Either path smooths out early trading.

Shelf Registration for Repeat Issuers

Companies that expect to tap the market repeatedly can skip the full registration each time by using a shelf registration under Rule 415. A single registration statement covers securities the company plans to sell over time. When conditions turn favorable, the company pulls shares off the shelf without going back to the SEC for a new review. ATM programs, for instance, must be registered on a shelf using Form S-3.³

Not everyone qualifies. To use Form S-3, a company must have been a reporting issuer for at least 12 months, filed all required reports on time during that period, and stayed current on debt payments and preferred dividends.¹³ Well-known seasoned issuers—the largest and most established public companies—move even faster: their shelf registrations become effective automatically upon filing, with no SEC review. A shelf changes the timing entirely. A company with one already effective can launch a follow-on in days instead of months, raising capital while the window is open rather than scrambling as it closes.

Exchange Listing Standards

SEC registration is not the whole story. The company also has to meet the listing standards of the exchange it wants to trade on. The NYSE requires at least 400 round-lot shareholders (each holding 100 shares or more), a minimum of 1.1 million publicly held shares, and at least $100 million in market value of those publicly held shares. The stock must be priced at $4.00 or higher at listing.¹⁴

Financial tests also apply. Under the earnings test, a company must have earned at least $10 million in aggregate pre-tax income over the three most recent fiscal years, with each year above zero and at least $2 million in each of the two most recent years. Companies that fail the earnings test can qualify under a global market capitalization test set at $200 million.¹⁴ Nasdaq has its own thresholds and tiers. Meeting the standards is a prerequisite for the IPO, and staying above them is an ongoing obligation. Falling below can trigger delisting.

What Happens After the Deal Closes

The offering is the beginning of the compliance calendar, not the end of it. Going public creates a permanent set of obligations for the company and new restrictions on anyone with a meaningful stake.

Lock-Up Periods

In almost every IPO, insiders—founders, executives, and pre-IPO investors—agree not to sell for a set period after the offering. The standard is 180 days, though some deals include staggered or performance-based early-release provisions. Lock-ups are contracts between the insiders and the underwriters, not regulatory requirements. When one expires and a large block of shares becomes eligible for sale, the stock often drops on the anticipation of more supply.

Section 16 Reporting

Officers, directors, and anyone holding more than 10% of a class of the company’s stock must disclose their ownership and every transaction in the company’s securities. A new insider files Form 3 within 10 days of becoming one. Subsequent purchases or sales go on Form 4 within two business days. Transactions that qualify for certain exemptions or were not previously reported are picked up on an annual Form 5, due within 45 days after the company’s fiscal year end.¹⁵

Rule 144 and Restricted Stock

Shares from a PIPE, a pre-IPO investment, or employee compensation are typically restricted and cannot be freely resold. Rule 144 sets the pathway. For a reporting company, the minimum holding period is six months from when the shares were bought and fully paid for. For non-reporting companies, it is one year.¹⁶

Affiliates—officers, directors, and large shareholders—face volume limits even after the holding period ends. The number of shares an affiliate can sell in any three-month period cannot exceed the greater of 1% of the outstanding shares of the same class, or the average weekly trading volume over the four weeks before the sale.¹⁶ The caps stop insiders from unloading positions in ways that would crush the stock.

Ongoing SEC Reporting

After the IPO the company files annual reports on Form 10-K (audited by independent accountants), quarterly reports on Form 10-Q, and current reports on Form 8-K within four business days of specified triggering events. The CEO and CFO personally certify the financial information in each 10-K and 10-Q. Everything goes through EDGAR and is public the moment it is submitted.¹

Tax Treatment of the Money Raised

One point that surprises people outside corporate finance: the company issuing stock does not owe tax on the proceeds. Under the Internal Revenue Code, a corporation does not recognize gain or loss when it receives money or property in exchange for its own stock, including treasury stock.¹⁷ That applies to IPOs, follow-ons, and every other new share issuance.

Shareholders selling existing shares in a secondary offering are on a different track. They recognize capital gains or losses on the difference between their sale price and their cost basis, and the treatment depends on how long they held the shares and their individual tax situation. That personal tax outcome is entirely separate from the corporate-level neutrality of issuing new stock.

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