424B4424B4
May 1, 2026Final prospectus0001193125-26-201758
All companies
Market source424B4May 1, 2026Shares eligible to trade · by holder groupMay 1, 2026 → Oct 28, 2026 · 100% unlocked
Seaport Therapeutics Inc
SPTXPublicArchived
Public / ArchivedUnited States(Nasdaq)Best valuation $1.09B1 market
Public listing
Listed· Nasdaq· Listing market: United StatesListing date
Not available
Offer price
Not available
Shares offered
Not available
Offering proceeds
Not available
Sources: SEC EDGAR, Nasdaq
IPO Calendar · NasdaqIPO
SPTXPrice
$20.34
24h
-2.96%
Valuation
$1.09B
24h volume
$4.51M
Type
IPO
Market sourceSeaport Therapeutics Inc trades publicly. Prices are daily closing quotes.
View on NasdaqIPO Calendar · updated 3h ago
Seaport Therapeutics Inc IPO unlock schedule & public float
Lock-up schedule, public float and locked shares extracted from Seaport Therapeutics Inc's SEC prospectus. Shares shown are eligible to trade — lock-up expiry does not mean holders have sold or will sell.
Total shares (FD)
53.03M
Public float
14.16M
Locked
38.87M
IPO raise
$254.88M
Next unlock
—
- Lock-up holders38.87M
- IPO public float14.16M
About Seaport Therapeutics Inc
Seaport Therapeutics Inc is a clinical-stage biopharmaceutical company developing therapies for cancer and other serious diseases, organized around advancing candidates through preclinical and clinical stages toward regulatory review.
SEC IPO filings
Final prospectusEDGAR filings resolved from SPTX / CIK 0002042347.
Apr 30, 2026Effective9999999995-26-001408
Apr 30, 2026Exchange registration0001354457-26-000398
8-A12B8-A12B
Apr 28, 2026Exchange registration0001193125-26-186943
S-1/AS-1/A
Apr 27, 2026Amended0001193125-26-178716
S-1S-1
Apr 10, 2026Filed0001193125-26-151211
DRS/Afilename1.htm
Feb 27, 2026Confidential draft0001193125-26-083019
DRS/Afilename1.htm
Jan 29, 2026Confidential draft0001193125-26-027903
Nov 21, 2025Confidential draft0001193125-25-290911
Seaport Therapeutics Inc IPO — frequently asked questions
- When did Seaport Therapeutics Inc go public?
- Seaport Therapeutics Inc has already gone public and now trades publicly on Nasdaq under the ticker SPTX.
- Can I buy Seaport Therapeutics Inc stock?
- Yes — Seaport Therapeutics Inc is publicly traded on Nasdaq as SPTX. You can follow its live price, valuation and post-IPO performance above.
- What is Seaport Therapeutics Inc's valuation?
- Seaport Therapeutics Inc's most recent valuation tracked here is $1.09B, derived from live market prices.