Quantum Chip Maker SEEQC Advances Toward Nasdaq

SEEQC, a quantum-computing chip infrastructure maker, amended its S-1 as its Nasdaq listing via a merger with blank-check company Allegro Merger Corp moves closer to closing.

By the Numbers

Jun 29, 2026
Original S-1 filed
Sep 11, 2026
Amendment filed
SEQC
Planned ticker
Cantor, BTIG
Underwriters
Elmsford, NY
HQ
Trace Cohen
By Trace Cohen · Value Add Pulse IPO Desk
Founder & Editor-in-chief, Value Add VC
1 min read
Quantum Chip Maker SEEQC Advances Toward Nasdaq: key figures
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THE RUNDOWN

1

The amendment still leaves share count and price range undetermined, so the combined company's valuation -- the number that decides whether SEQC trades above or below its combination price -- is unset this close to closing.

2

The comparison that matters is the route, not the physics: IonQ, Rigetti and D-Wave reached public markets by direct IPO, while SEEQC arrives through a blank-check merger with Allegro Merger Corp.

3

Quantum computing is pre-commercial for every public company in the category, which leaves no revenue comparison to anchor SEEQC's Single Flux Quantum and cryogenic CMOS pitch against.

4

The concrete test is disclosure timing -- whether customer-traction detail surfaces before the Allegro merger closes, or only once the combined company starts reporting publicly under SEQC.

The VC Read

Value Add VC analysis

A deSPAC route for a pre-revenue quantum chip company is a structure that let a lot of 2021-era deep tech list without the scrutiny a traditional IPO roadshow applies -- the diligence question is whether SEEQC's actual customer contracts get disclosed before the merger closes, not after. Compare the eventual combined-company cap table dilution to IonQ's own SPAC history before assuming this trades anywhere near its combination valuation.

Analysis

SEEQC filed an amended S-1/A registration statement September 11, the latest step toward completing its Nasdaq listing through a merger with blank-check company Allegro Merger Corp, per SEC EDGAR filings. Pulse first covered SEEQC's original S-1 filing when it was submitted June 29.

What's changed since that earlier filing: the amendment updates SEEQC's registration ahead of the merger closing, which will make Allegro Merger Corp a wholly owned subsidiary of SEEQC once complete. The number of shares and price range for the combined company still haven't been determined in the amended filing.

“The number of shares and price range for the combined company still haven't been determined in the amended filing.”

SEEQC, based in Elmsford, New York, develops digital, chip-based infrastructure for scalable, fault-tolerant quantum computing, integrating superconducting Single Flux Quantum logic with cryogenic CMOS for ultra-low-power control near the qubits. The company plans to list under ticker SEQC with Cantor and BTIG as lead book-running managers.

SEEQC's SPAC-merger path to Nasdaq is a notably different route than the direct IPOs pursued by quantum peers IonQ and Rigetti, both already public, and D-Wave. DeSPAC listings for pre-revenue deep-tech companies have drawn persistent skepticism from public-market investors since the 2021-2022 SPAC boom produced a wave of stocks that traded well below their combination price once early hype faded.

Quantum computing remains a pre-commercial category for every public company in it. Whether SEEQC's chip-level infrastructure approach proves differentiated enough to avoid the fate of past SPAC-merged deep-tech stocks will depend on customer-traction disclosures once the combined company actually reports as a public entity.

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Key Sources

1 source

Reported by SEC EDGAR · Analysis by Value Add Pulse.

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