Weekly recap

IPOs, SPACs and new listings: week of Sep 14–20, 2026

Week of Sep 14–20, 2026: 1 US IPO priced raising $350M; 1 SPAC IPO; 2 SPAC deals announced; 0 deSPACs closed; 4 new IPO filings. The largest IPO was Electra Therapeutics, Inc., raising $350M.

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US IPOs priced1$350M raised

SPAC IPOs1$250M raised

SPAC deals announced2

deSPACs closed0

US IPOs, direct listings and uplistings

Company	Type	Priced	Price	Raised	Market cap	Lead-left
Electra Therapeutics, Inc.	IPO	Sep 18, 2026	$15.00	$350M	$941.5M	Jefferies

New IPO filings

Company	First filed	Form	Exchange
Retension Pharmaceuticals, Inc.	Sep 18, 2026	S-1	Nasdaq Capital Market
TRex Bio, Inc.	Sep 18, 2026	S-1	Nasdaq Global Select
NSCALE Ltd	Sep 18, 2026	S-1	NYSE
VME Companies, Inc.	Sep 18, 2026	S-1	Nasdaq

SPAC IPOs

SPAC	Priced	Size	Lead underwriter
Haymaker Acquisition Corp V	Sep 18, 2026	$250M	—

SPAC deals announced

SPAC	Target	Announced	Deal value
Flag Ship Acquisition Corp	Bluechip & Co. Holdings	Sep 15, 2026	$400M
ACP Holdings Acquisition Corp.	May Mobility, Inc.	Sep 16, 2026	$1.4B

SPAC mergers closed

None this week.

Reverse mergers

Company	Public company	Event	Date
North Immunology, Inc.	Aethlon Medical, Inc.	Announced	Sep 17, 2026
Marea Therapeutics, Inc.	Lisata Therapeutics, Inc.	Announced	Sep 17, 2026
Santersus AG	Xenetic Biosciences, Inc.	Announced	Sep 16, 2026
Lisata Therapeutics, Inc.	Lisata Therapeutics, Inc.	Completed	Sep 17, 2026

Reg A offerings qualified

Company	Tier	Qualified
Global Interchange, Inc.	Tier2	Sep 15, 2026
Gratus Reserve V, LLC	Tier2	Sep 15, 2026
Dear Air Product Technology Inc	Tier2	Sep 15, 2026

Coming up

IPO calendar: deals expected to price this week and next · US IPO statistics · SPAC statistics