TRex Bio's IPO

Listed Oct 9, 2026 at $14 on Nasdaq as TRXB.

Offer price
$14
Market cap
$384M
Shares
8,333,334

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From its final prospectus (424B4) on SEC EDGAR, filed Oct 9, 2026.

What does TRex Bio do?

“We are a clinical-stage biopharmaceutical company focused on tissue Treg biology for the discovery and development of immunoregulatory medicines designed to restore immune balance and promote tissue repair to address unmet needs of patients with autoimmune and inflammatory diseases.”
From its final prospectus (424B4), filed Oct 9, 2026
TRex Bio's facts, each with its source
FactTRex
Bio
Founded2018From its final prospectus (424B4) of Oct 9, 2026
IncorporatedEngland and Wales, 2018From its final prospectus (424B4) of Oct 9, 2026
HeadquartersSouth San Francisco, CaliforniaFrom its final prospectus (424B4) of Oct 9, 2026
Employees60 full-time, as of August 31, 2026From its final prospectus (424B4) of Oct 9, 2026
Websitetrex.bioFrom its final prospectus (424B4) of Oct 9, 2026

What is the offering?

Each figure names the filing it is from and that filing's date. The market cap is Breakaway's arithmetic from the prospectus's share count.

TRex Bio's facts, each with its source
FactTRex
Bio
Shares offered8,333,334From the final prospectus (424B4) filed Oct 9, 2026
Offer price$14 a shareFrom the final prospectus (424B4) filed Oct 9, 2026
Raised at that price$117 millionFrom the final prospectus (424B4) filed Oct 9, 2026
Underwriters' discount$8.2 millionFrom the final prospectus (424B4) filed Oct 9, 2026
Net proceeds the company expectsAbout $104 millionFrom the final prospectus (424B4) filed Oct 9, 2026
Underwriters' option1,250,000 more sharesFrom the final prospectus (424B4) filed Oct 9, 2026
UnderwritersJ.P. Morgan, Evercore ISI, Cantor, Stifel, and WedbushFrom the final prospectus (424B4) filed Oct 9, 2026, as its cover names them
ExchangeNasdaq Global Select Market, as TRXBFrom the final prospectus (424B4) filed Oct 9, 2026
Shares outstanding after27,445,682From the final prospectus (424B4) filed Oct 9, 2026
Market cap at the offer price$384 millionBreakaway's arithmetic from the prospectus's share count

What the filing says about its money

TRex Bio's facts, each with its source
FactTRex
Bio
RevenueNone from product sales yetFrom its final prospectus (424B4) of Oct 9, 2026: it has not generated any revenue from product sales
Net loss$34.8 million, year to December 31, 2025From its final prospectus (424B4) of Oct 9, 2026, its summary financial data
Cash$90.9 million, as of June 30, 2026From its final prospectus (424B4) of Oct 9, 2026: cash, cash equivalents, and marketable securities
Last preferred stockSeries B preferredFrom its final prospectus (424B4) of Oct 9, 2026
Raised before the IPO$220 million in private financingsFrom its final prospectus (424B4) of Oct 9, 2026

What risks does TRex Bio name first?

  1. “We are a clinical-stage biopharmaceutical company with a limited operating history and no products approved for commercial sale; we have incurred substantial losses since our inception, and we anticipate incurring substantial and increasing losses for the foreseeable future.”
  2. “Even if this offering is successful, we will require substantial additional financing to achieve our goals, and failure to obtain additional capital when needed, or on acceptable terms, would cause us to delay, limit, reduce or terminate our product development efforts.”
  3. “Raising additional capital may cause dilution to our stockholders, including purchasers of common stock in this offering, imposing restrictions on our operations or require us to relinquish rights to our product candidates.”

The first three of the risks its prospectus summary lists, in the company's words. The rest, and each in full, are in the filing. Read the filing.

Every date of TRex Bio's IPO

TRex Bio's IPO dates, each with its source
WhatDay
Registration filedForm S-1, SEC EDGARSep 18, 2026
Exchange registration filedexchange registration (Form 8-A), SEC EDGAROct 6, 2026
Declared effective by the SECSEC notice of effectiveness, SEC EDGAROct 8, 2026
Pricedfinal prospectus (424B4), filed Oct 9, SEC EDGAROct 8, 2026
First tradeMassive's IPO calendarOct 9, 2026
Lock-upNo SEC filer number on record for the tickerNot read

How did its first days trade?

From its daily bars, each close against its $14 offer price.

TRex Bio's first sessions
DayOpenCloseFrom the
offer
Oct 9$13.50$140.0%
Oct 12$14.19$14.03+0.2%
Oct 13$13.95$13.60-2.9%
Oct 14$13.41$13.50-3.6%
Oct 15$13.50$14.16+1.1%

The other IPOs expected

The other IPOs expected or in registration
CompanyPrice

TRex Bio IPO questions

When is TRex Bio's IPO?

Listed Oct 9, 2026 at $14 on Nasdaq as TRXB.

What is TRex Bio's IPO price?

TRex Bio's IPO priced at $14 a share, per its final prospectus of Oct 9, 2026.

How many shares is TRex Bio selling?

8,333,334 shares, and the underwriters may buy 1,250,000 more, per its final prospectus (424B4).

Who are the underwriters?

J.P. Morgan, Evercore ISI, Cantor, Stifel, and Wedbush, as the prospectus's cover names them.

Does Breakaway rate TRex Bio?

Breakaway scores a new stock from its second trading day, ranked against every US stock it scores. For its first 21 sessions the page says New listing in place of the tier, and each check that needs more history waits for it.

Can Breakaway say where TRex Bio's price will go?

No. Breakaway does not say where a price will go. Every figure here is from the company's SEC filings, linked on each line.

Where every figure comes from.

  • Each company's SEC filings on EDGAR, read twice a day: its registration (Form S-1 or F-1), the amendment that sets its price range, and its final prospectus (424B4). The shares, the price, the underwriters, the lock-up, and the company's words are the filing's, linked on each line.
  • The expected day is Massive's IPO calendar's, the first trade the market data's, and the moves each stock's daily closes against its offer price.
  • The market cap is Breakaway's arithmetic: the shares the prospectus says will be outstanding after the offering, times the midpoint of the range or the offer price.
  • The Quality Score is Breakaway's, from a stock's second trading day; for its first 21 sessions it is marked New listing, and each check that needs more history waits for it.
  • Blank-check companies (SPACs) and unit offerings are left out and counted; a direct listing and a US listing of a company listed abroad are in and marked.

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Every IPO expected and listed, and October 2026's listings.

Sources: TRex Bio, Inc.'s final prospectus (424B4) of Oct 9, 2026; the prices, the stock's daily bars, 15 minutes behind.

Not advice. Figures from each company's SEC filings, linked on each line. Breakaway is not an underwriter, broker, or adviser, and does not say where a price will go.

Our top-scored stocks' record: Oct 2021 to Sep 2026, before costs; recorded live since Sep 9 2026.

Breakaway publishes impersonal securities research and analytical tools: one formula, the same score for everyone. It is not personalized investment advice, and nothing here is a recommendation to buy or sell any security.

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