Parabilis Medicines' IPO
Listed Jun 10, 2026 at $20 on Nasdaq as PBLS. Today 43% above its $20 offer price; its first day closed +58.0%.
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What does Parabilis Medicines do?
| Fact | Parabilis Medicines |
|---|---|
| What it does | “We are a clinical-stage biopharmaceutical company built to develop transformative medicines addressing some of the most consequential, yet historically undruggable, protein targets driving human disease.” |
| Founded | 2015 |
| Incorporated | Delaware, 2015 |
| Headquarters | Cambridge, Massachusetts |
| Employees | 145 full-time, as of April 1, 2026 |
| Website | parabilismed.com |
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.
| Fact | Parabilis Medicines |
|---|---|
| Shares offered | 33,500,000 |
| Offer price | $20 a share |
| Raised at that price | $670 million |
| Underwriters' discount | $46.9 million |
| Net proceeds the company expects | About $618 million |
| Underwriters' option | 5,025,000 more shares |
| Underwriters | Leerink Partners, BofA Securities, Evercore ISI, Guggenheim Securities, and LifeSci Capital |
| Exchange | Nasdaq Global Select Market, as PBLS |
| Shares outstanding after | 116,564,570 |
| Market cap at the offer price | $2.33 billion |
What the filing says about its money
| Fact | Parabilis Medicines |
|---|---|
| Revenue | None from product sales yet |
| Net loss | $146 million, year to December 31, 2025 |
| Last preferred stock | Series F preferred |
| Raised before the IPO | $877 million in private financings |
What risks does Parabilis Medicines name first?
- “We are a clinical-stage biotechnology company with a limited operating history and no products approved by regulators for commercial sale, which may make it difficult to evaluate our current and future business prospects.”
- “Even if this offering and the concurrent private placement are completed, we will require substantial additional capital to finance our operations in the future.”
- “We have incurred significant losses since our inception and anticipate that we will continue to incur significant losses for the foreseeable future.”
Dates so far
| What | Day |
|---|---|
| Registration filed | May 19, 2026 |
| Exchange registration filed | Jun 5, 2026 |
| Declared effective by the SEC | Jun 9, 2026 |
| Priced | Jun 9, 2026 |
| First trade | Jun 10, 2026 |
| Lock-up ends | Dec 6, 2026 |
How did its first days trade?
From its daily bars, each close against its $20 offer price.
| Day | Open | Close | From the offer |
|---|---|---|---|
| Jun 10 | $33.35 | $31.60 | +58.0% |
| Jun 11 | $30 | $30.31 | +51.5% |
| Jun 12 | $29.86 | $27.26 | +36.3% |
| Jun 15 | $26.80 | $25.01 | +25.1% |
| Jun 16 | $25.26 | $26.59 | +32.9% |
What is Parabilis Medicines' Quality Score?
Below Average
PBLS's page, with every reason behind its scoreThe other IPOs expected
Parabilis Medicines IPO questions
When is Parabilis Medicines' IPO?
Listed Jun 10, 2026 at $20 on Nasdaq as PBLS.
What is Parabilis Medicines' IPO price?
Parabilis Medicines' IPO priced at $20 a share, per its final prospectus of Jun 10, 2026.
How many shares is Parabilis Medicines selling?
33,500,000 shares, and the underwriters may buy 5,025,000 more, per its final prospectus (424B4).
Who are the underwriters?
Leerink Partners, BofA Securities, Evercore ISI, Guggenheim Securities, and LifeSci Capital, as the prospectus's cover names them.
When does the lock-up end?
Parabilis Medicines' IPO lock-up ends Dec 6, 2026. Its final prospectus says: “180 days from the date of this prospectus.”
Does Breakaway rate Parabilis Medicines?
Parabilis Medicines has a Quality Score of 2 today. The score counts the 14 chart checks and the company's filings; a check that needs more history than a new stock has waits for it.
Can Breakaway say where Parabilis Medicines' 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.
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