A special purpose acquisition company, or SPAC, works by raising money from public investors in an IPO, holding that money in a trust account, and then using it to buy a private company and take it public through a merger, all within a set deadline. The SPAC itself has no products, no revenue, and no operations. Its only job is to find a target and close a deal, usually within 24 months. If it can’t, it dissolves and gives investors their money back.
That basic outline hides a lot of moving parts: how sponsors get paid, when you can pull your money out, how your ownership gets diluted, and what happens to the warrants you may own. Here is how each stage actually works.
Formation and the IPO
A SPAC starts with one or more sponsors, typically experienced executives or investment professionals, who put up seed capital to cover legal fees and regulatory filings. In return, they receive “founder shares” that give them roughly 20 percent of the SPAC’s equity after the IPO. This stake, called the sponsor promote, is bought at a deep discount to what the public will pay and is the sponsors’ main incentive to get a deal done.
To raise money from the public, the SPAC files a Form S-1 registration statement with the SEC under the Securities Act of 1933.1U.S. Securities and Exchange Commission. Form S-1 Registration Statement Under the Securities Act of 1933 It then sells “units” in the IPO, usually at $10 each. Each unit contains one share of common stock and a fraction of a warrant, which is a contract giving the holder the right to buy additional shares later at a set price, typically $11.50.2FINRA. SPAC Warrants: 5 Tips to Avoid Missed Opportunities After a short holding period, the shares and warrants separate and trade on their own.
Because sponsors get 20 percent of the equity for a modest investment while public investors pay full price, the sponsor promote dilutes public shareholders’ ownership in the eventual combined company. That dilution is baked in from day one.
The Trust Account
Nearly all of the IPO proceeds go into a segregated trust account, invested in low-risk instruments such as short-term U.S. Treasury securities. The money can’t be tapped for sponsor salaries or operating expenses. It stays locked until a merger closes or the SPAC winds down.3U.S. Securities and Exchange Commission. Special Purpose Acquisition Companies, Shell Companies, and Projections Small amounts of interest can be released to pay income and franchise taxes, but the principal is untouchable.
This is the central investor protection in the SPAC structure. If the SPAC never closes a deal, the trust liquidates and each public shareholder receives a pro rata share of the funds, including accumulated interest. And if a merger does move forward, shareholders who don’t want to participate can redeem their shares and collect their portion of the trust instead.
Finding a Target and the Deadline
Once the IPO closes, the management team starts hunting for a private company to acquire. The SPAC’s governing documents set a deadline, commonly 24 months and sometimes as long as 36.3U.S. Securities and Exchange Commission. Special Purpose Acquisition Companies, Shell Companies, and Projections If the deadline passes without a signed deal, the SPAC either seeks shareholder approval for an extension or dissolves and returns the trust to investors.
During the search, the team runs due diligence on potential targets, reviewing financials, tax obligations, debts, litigation, and operational health. When a promising candidate emerges, the parties usually sign a non-binding letter of intent before negotiating valuation, deal structure, and the governance of the combined company.
The De-SPAC Merger, the Vote, and Redemption
Once a merger agreement is signed, the transaction enters the “de-SPAC” phase, when the private target merges into the SPAC’s public shell and starts trading on a stock exchange. Two protections matter most to you here: the shareholder vote and the redemption right.
The Proxy Statement and Shareholder Vote
The SPAC files a proxy statement on Schedule 14A with the SEC that lays out the terms of the merger and the target company’s financials.4U.S. Securities and Exchange Commission. Proxy Rules and Schedules 14A/14C A formal meeting follows, where shareholders vote to approve or reject the deal. A rejection kills the merger.
Redemption Rights
Regardless of how you vote, you can redeem your shares before the merger closes and get back a pro rata portion of the trust, essentially your original investment plus a share of the interest earned, minus any amounts released for taxes.3U.S. Securities and Exchange Commission. Special Purpose Acquisition Companies, Shell Companies, and Projections You can vote yes on the merger and still redeem. The two decisions are independent.
Minimum Cash Conditions
Most merger agreements include a minimum cash condition, meaning the SPAC has to show up at closing with a certain amount of cash for the deal to go through.3U.S. Securities and Exchange Commission. Special Purpose Acquisition Companies, Shell Companies, and Projections That cash can come from the trust after redemptions, from outside financing, or from other sources. If redemptions run high and the remaining cash falls below the threshold, the deal can collapse even after shareholders approve it.
PIPE Financing and Extra Dilution
When a SPAC worries that redemptions will drain the trust below the minimum cash condition, or when the target simply needs more capital than the trust holds, the SPAC arranges a private investment in public equity, or PIPE. Institutional investors such as hedge funds, mutual funds, or private equity firms agree to buy shares at a negotiated price, closing at the same time as the merger. PIPE investors usually get a discount to the trading price and sometimes warrants on top.
The PIPE brings in extra capital and signals that sophisticated investors have looked at the deal. But those new shares increase the total share count after the merger, which means more dilution for existing public shareholders on top of the sponsor promote.
Warrants After the Merger
The warrants that came bundled with IPO units let you buy additional shares at $11.50, and they generally become exercisable 30 days after the de-SPAC merger closes or 12 months after the IPO, whichever comes later.2FINRA. SPAC Warrants: 5 Tips to Avoid Missed Opportunities Once the stock climbs high enough, the company can force you to exercise or forfeit through a redemption call. A common trigger is the stock trading at or above $18 for a set number of days. If a redemption is announced, you typically get 30 to 45 calendar days to exercise before the warrants become worthless.
After the merger closes, sponsors and certain insiders are usually locked up from selling their shares for around 12 months. That restriction is meant to keep them from cashing out the moment the merged company starts trading.
SEC Oversight and the 2024 Rules
Throughout its life, a SPAC files quarterly and annual reports and discloses major events on Form 8-K under the Securities Exchange Act of 1934.5U.S. Securities and Exchange Commission. Form 8-K Current Report Directors, officers, and sponsors face personal liability for false or misleading statements in connection with the sale of securities. Rule 10b-5 prohibits material misstatements or omissions that would affect an investor’s decision.6GovInfo. 17 CFR 240.10b-5 – Employment of Manipulative and Deceptive Devices Rule 14a-9 prohibits false or misleading statements in proxy materials sent before the merger vote.7eCFR. 17 CFR 240.14a-9 – False or Misleading Statements Violations can lead to SEC enforcement, fines, or private lawsuits.
Projections deserve their own attention. In a traditional public offering, federal law gives companies a “safe harbor” that shields them from liability for forward-looking statements that turn out wrong, as long as they include meaningful cautionary language. The statute that created that safe harbor, the Private Securities Litigation Reform Act, explicitly excludes blank check companies, including SPACs.8Office of the Law Revision Counsel. 15 U.S. Code 78u-5 – Application of Safe Harbor for Forward-Looking Statements
In January 2024, the SEC adopted final rules that took effect July 1, 2024. They reinforce the exclusion and require SPACs to disclose all material assumptions behind any projections included in de-SPAC filings and to explain the basis for those forecasts.9U.S. Securities and Exchange Commission. SEC Adopts Rules to Enhance Investor Protections Relating to SPACs, Shell Companies, and Projections Sponsors and target company management face real legal exposure if projections turn out to be materially misleading.
Tax Treatment When You Redeem or Hold Warrants
If you redeem your SPAC shares, whether because you opted out of a merger or because the SPAC liquidated, the transaction is treated as a sale. Your gain or loss is the redemption proceeds minus your cost basis, and whether it’s short-term or long-term depends on how long you held the shares.
Warrants work differently. When you buy a unit, your cost is split between the stock and the warrant based on their relative fair market values at purchase. Exercising a warrant isn’t itself a taxable event: your basis in the new share equals the portion of the original purchase price allocated to the warrant plus the exercise price you pay. Warrants received as compensation for services follow different rules; the difference between the strike price and the market value on the date of exercise is ordinary income.
If the SPAC liquidates and your warrants expire worthless, you can claim a capital loss equal to the portion of your investment allocated to them. SPAC tax rules can get complicated, especially in stock-for-stock mergers or when the SPAC is classified as a passive foreign investment company, so it’s worth talking to a tax professional before you redeem or exercise.