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IPO lock-up expirations: October 2026

11 US IPO lock-ups end in October 2026, including SK hynix Inc. (SKHY), X-Energy, Inc. (XE) and AEVEX Corp. (AVEX).

Lock-up endsCompanySymbolIPO dateIPO priceRaisedMarket cap at IPOLock-upLead-left
Thu Oct 8, 2026SK hynix Inc.SKHYJul 10, 2026$149.00$26.51B$108.6B90 daysJoint (alphabetical)
Tue Oct 13, 2026Arxis, Inc.ARXSApr 16, 2026$28.00$1.13B$1.78B180 daysGoldman Sachs
Wed Oct 14, 2026Kailera Therapeutics, Inc.KLRAApr 17, 2026$16.00$625M$1.98B180 daysJ.P. Morgan
Wed Oct 14, 2026Alamar Biosciences, Inc.ALMRApr 17, 2026$17.00$191.2M$1.13B180 days—
Sat Oct 17, 2026AEVEX Corp.AVEXApr 20, 2026$20.00$320M$2.23B180 daysGoldman Sachs
Tue Oct 20, 2026Yesway, Inc.YSWYApr 23, 2026$20.00$280M$1.22B180 daysMorgan Stanley
Tue Oct 20, 2026Elmet Group Co.ELMTApr 23, 2026$14.00$120M$403.9M180 daysCantor
Sat Oct 24, 2026X-Energy, Inc.XEApr 27, 2026$23.00$1.02B$9.02B180 daysJ.P. Morgan
Tue Oct 27, 2026Avalyn Pharma Inc.AVLNApr 30, 2026$18.00$300M$752.6M180 daysMorgan Stanley
Wed Oct 28, 2026Hemab Therapeutics Holdings, Inc.COAGMay 1, 2026$18.00$301.5M$795.5M180 daysGoldman Sachs
Wed Oct 28, 2026Seaport Therapeutics, Inc.SPTXMay 1, 2026$18.00$254.9M$954.5M180 daysGoldman Sachs

The lock-up end date is the IPO pricing date plus the lock-up period stated in the final prospectus (usually 180 days); shares can typically be sold from the next trading day. Many agreements allow earlier release, often after an earnings report or if the stock trades above a set price, and the banks can waive them. "Staged" means the prospectus also sets other release dates for some shares. The prospectus's Underwriting section has the exact terms; dates here are not investment advice.

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Upcoming lock-up expirations