The US IPO calendar tracks companies that plan to sell shares to the public for the first time on a U.S. exchange, and each entry is a snapshot of a process that can change or stall at any step. This page shows the calendar, then explains how a U.S. offering moves from a registration statement to the first trade, how to read a calendar without treating it as a recommendation, and what the tax and reporting picture looks like for a U.S. resident, a Canadian resident and an NRI or other Indian resident.
The table below carries its own as-of date and is compiled from public exchange and regulator information. Offerings are added, repriced, postponed and withdrawn constantly, so treat every row as a dated snapshot and check the company's filings.
| Company | Exchange (ticker) | Expected date | Price range | Size | Status | Source |
|---|---|---|---|---|---|---|
| Retension Pharmaceuticals, Inc. | NASDAQ (RTSN) | 2026-10-09 | $12.00 | $45,000,000 (3,750,000 shares) | Priced | Official page |
| TRex Bio, Inc. | NASDAQ (TRXB) | 2026-10-09 | $14.00 | $116,666,676 (8,333,334 shares) | Priced | Official page |
| Frazier Life Sciences Acquisition Corp. II | NASDAQ (FLSC) | 2026-10-14 | $10.00 | $75,000,000 (7,500,000 shares) | Priced | Official page |
| Amaero Inc. | NASDAQ (AMRO) | 2026-10-15 | $4.25 | $20,000,003 (4,705,883 shares) | Priced | Official page |
| Iambic Therapeutics, Inc. | NASDAQ (IAM) | 2026-10-15 | $16.00 | $150,000,000 (9,375,000 shares) | Priced | Official page |
| City Therapeutics, Inc. | NASDAQ (CTY) | 2026-10-16 | $18.00 | $199,999,998 (11,111,111 shares) | Priced | Official page |
| TCGX Acquisition Corp. II | NASDAQ (TCXB) | 2026-10-16 | $10.00 | $100,000,000 (10,000,000 shares) | Priced | Official page |
| Lycia Therapeutics, Inc. | NASDAQ (LYCA) | 2026-10-23 | $16.00-$18.00 | 14,700,000 shares (Nasdaq calendar offer amount $304,290,000) | Expected to price | Official page |
| DayOne Data Centers Ltd | NASDAQ (DODC) | TBD | - | - | Filed | Official page |
| Centinel Spine Holdco, Inc. | NYSE (CNTL) | TBD | - | - | Filed | Official page |
| Bambusa Therapeutics, Inc. | NASDAQ (BBTX) | TBD | - | - | Filed | Official page |
| Patriot Mobile Inc. | NASDAQ (PTRT) | TBD | - | - | Filed | Official page |
| Simwon America Corp. | NASDAQ (SWA) | TBD | $18.00-$22.00 | 2,500,000 shares; $45-55 million excluding over-allotment | Filed | Official page |
| Aspen Neuroscience, Inc. | NASDAQ (ASPE) | TBD | - | - | Filed | Official page |
| Sensing4D AI Ltd | NASDAQ | TBD | - | - | Filed | Official page |
Official calendars and filings checked:
How the IPO process works in the United States
- Registration. Securities law bars a company from selling shares to the public unless the offering is registered with the SEC or fits an exemption. The process therefore starts with a registration statement, usually Form S-1, posted on EDGAR. The bulk of that form is the prospectus.
- Staff comments. SEC examiners read the filing against the disclosure rules and typically ask for changes. The agency's bulletin is clear that their review is not an endorsement of the offering and does not certify that the disclosure is complete or accurate.
- Demand building. The lead banks, called underwriters, canvass prospective buyers for indications of interest before the filing goes effective. They use that feedback to suggest a price, and the issuer makes the final call.
- Effectiveness and pricing. When staff declare the registration statement effective, the company can proceed. The final prospectus, usually a 424B3 or 424B4 filing, carries the final offering price.
- Allocation. In many deals the bulk of the stock goes to large funds and wealthy clients of the banks. Most individuals first obtain shares by buying them in the open market once trading starts.
- Listing. The issuer normally seeks a listing on NYSE or Nasdaq, which the prospectus discloses, and from then on owes the public its Form 10-Q and Form 10-K reports.
- Lock-ups. Existing shareholders typically agree not to sell for a period, commonly 180 days. The SEC calls the shares that cannot yet trade the market overhang, and warns that the price may fall significantly when a lock-up expires and many shares become available at once.
How to use a US IPO calendar
| Calendar field | What to check |
|---|---|
| Status (filed, expected, priced, withdrawn) | Only a priced offering has a final price; "expected" is an estimate |
| Price range and shares offered | Compare with the prospectus; the range can change |
| Exchange | Listing on an exchange triggers ongoing reporting duties |
| Lead underwriters | They decide allocation; retail access may depend on your broker |
| Lock-up and overhang | Found in the prospectus, with the sections on dilution and use of proceeds |
Read the prospectus sections titled Risk Factors, Use of Proceeds, Dilution and Underwriting before anything else. Ask your broker whether it receives allocations and what its eligibility rules are.
Risks to understand
- Speculative by nature. The SEC describes IPOs as potentially risky and speculative.
- First-day price swings. Limited early supply from lock-ups and anti-flipping policies can push prices steeply in either direction.
- Pre-IPO scams. The SEC warns that "pre-IPO" shares offered through social media, calls or email may violate federal securities laws, and that investors can lose their whole investment.
- No guarantee of access. Allocations are not equal, and a calendar entry does not mean you can buy at the offering price.
Where the official calendars and filings are
- The Nasdaq IPO calendar and the NYSE IPO Center list offerings on each exchange.
- EDGAR, the SEC's filing database, holds Form S-1, amendments and final prospectuses; see the SEC search page.
- The SEC's investor education site, Investor.gov, explains the process in plain language.
- For a comparison with other markets, see the Canada IPO calendar and the India IPO calendar.
Tax notes for IPO investors
| Reader | What to remember |
|---|---|
| U.S. resident | Your holding period starts the day after you acquire the shares, and a gain is long-term only after more than one year. Employees and founders with pre-IPO equity should ask about stock-based pay and qualified small business stock; the IRS notes a 28% maximum rate on the taxable part of a qualified small business stock gain. See startup and equity tax planning |
| Canadian resident | Buying U.S. shares counts as foreign property; high cost can trigger the T1135. Dividends are subject to U.S. withholding |
| NRI or Indian resident | A resident remits funds under the Liberalised Remittance Scheme and reports the shares in Schedule FA; see LRS explained |
| Any non-U.S. person | The IRS says a nonresident alien in the United States fewer than 183 days is generally not taxed on U.S. stock gains, but dividends face 30% withholding or a lower treaty rate |
If the issuer is organized outside the United States, ask whether it is a passive foreign investment company; see Form 8621 step by step and capital gains compared. Our Aurora, Illinois CPA firm handles the U.S. side and does not give investment advice.
Frequently asked questions
Can I buy shares at the IPO price?
Only when a participating bank or broker offers you an allocation. Otherwise you buy on the open market after trading starts, at the market price.
What is a lock-up?
An agreement in which existing shareholders agree not to sell for a set period, typically 180 days. Its terms are in the prospectus.
Does SEC review mean the IPO is a good investment?
No. The SEC says its review and declaration of effectiveness do not approve the merits of an IPO.
Where do I find an IPO prospectus?
On EDGAR, listed as Form S-1 and later as a final prospectus filing such as 424B4.
Is a gain on an IPO share taxed differently?
Not by itself. The rate depends on your holding period and residence. Talk to a CPA before you sell.
Official sources
- Investor.gov: Updated Investor Bulletin, Investing in an IPO
- Investor.gov: Pre-IPO Investment Scams, Investor Alert
- SEC: EDGAR search and filings
- Nasdaq: IPO calendar
- NYSE: IPO Center
- IRS: Topic no. 409, Capital gains and losses
- IRS: Publication 519, U.S. Tax Guide for Aliens
This page summarizes public guidance in plain language. If anything here differs from the official source, the official source controls.
General information only. It is not tax, legal, accounting or immigration advice for your situation, and rules change; confirm the current rules with the official source or a licensed professional in the relevant country.