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YishengBio Co.

Closed (deSPAC)

Health Care · vaccine and biopharmaceutical development

What it is
A private company in health care preparing to list via a SPAC merger. Full profile in progress.
What it’s doing now
Merging with Summit Healthcare Acquisition Corp. (SMIH) — closed (despac).
What you should know
Data is still being assembled for this company — what is shown below is everything we have verified so far.
Profile in progress — we only publish what we can verify in filings, and for this company that work isn’t finished. Identity and deal facts above are current; business detail, financials and peers will appear as the filings are parsed.

What the company says about itself

Web research — not audited
What our web check found

[WEB-INTEL 2026-08-26] 7 finding(s) · web source asserts a FILING-ONLY figure (deadline / trust / status / floor / price) and it was NOT stored: "YS Biopharma at pre-money equity value of $834 million" [https://www.prnewswire.com/news-releases/ys-biopharma-to-merge-with-nasdaq-listed-summit-healthcare-acquisition-corp-301637273.html] · web source asserts a FILING-ONLY figure (deadline / trust / status / floor / price) and it was NOT stored: "Certain investors ("Forward Purchase Investors") are expected to invest $30 million in a private placement concurrently with the closing of the business combination transaction pursuant to certain forward purchase agreements" [https://www.prnewswire.com/news-releases/ys-biopharma-to-merge-with-nasdaq-listed-summit-healthcare-acquisition-corp-301637273.html] · web source asserts a FILING-ONLY figure (deadline / trust / status / floor / price) and it was NOT stored: "Up to 2,732,325 incentive bonus shares, including up to 1,285,800 shares to be newly issued by the combined entity and 1,446,525 shares to be contributed by the sponsor of Summit Healthcare Acquisition Corp., will be provided to non-redeemi" [https://www.prnewswire.com/news-releases/ys-biopharma-to-merge-with-nasdaq-listed-summit-healthcare-acquisition-corp-301637273.html] · web source asserts a FILING-ONLY figure (deadline / trust / status / floor / price) and it was NOT stored: "The business combination transaction is targeted to close in the first quarter of 2023" [https://www.prnewswire.com/news-releases/ys-biopharma-to-merge-with-nasdaq-listed-summit-healthcare-acquisition-corp-301637273.html] · web source asserts a FILING-ONLY figure (deadline / trust / status / floor / price) and it was NOT stored: "Extraordinary general meeting of Summit Healthcare Acquisition Corp.'s shareholders to be held on March 1, 2023 at 9:00 a.m. Eastern Time" [https://www.prnewswire.com/news-releases/summit-healthcare-acquisition-corp-and-ys-biopharma-announce-effectiveness-of-registration-statement-and-extraordinary-general-meeting-date-for-proposed-business-combination-301741339.html] · web source asserts a FILING-ONLY figure (deadline / trust / status / floor / price) and it was NOT stored: "The Business Combination is expected to officially close on March 16, 2023." [https://www.nasdaq.com/press-release/ys-biopharma-and-summit-healthcare-announce-shareholder-approval-of-business] · web source asserts a FILING-ONLY figure (deadline / trust / status / floor / price) and it was NOT stored: "Summit Healthcare and YS Biopharma completed the business combination on March 16, 2023." [https://www.cooley.com/news/coverage/2023/2023-03-20-summit-healthcare-closes-business-combination-with-ys-biopharma]

Source: company web presence · marketing claims are reported as claims, never merged into the filed figures above.

The deal it’s entering

YishengBio Co. is merging with Summit Healthcare Acquisition Corp. (SMIH) currently marked Closed (deSPAC).

Headline equity value
PIPE≈ $30M · unsourced

Structure per SEC accession(s) 0001104659-23-012173. How to read these numbers: headline vs effective valuation · what a definitive agreement commits

What exactly is being valued, and at what

Common questions

Is YishengBio Co. going public?

YishengBio Co. has an approved merger with the SPAC Summit Healthcare Acquisition Corp. (SMIH). Deal status: Closed (deSPAC).

Does YishengBio Co. have revenue?

The filings we've parsed don't state a usable revenue figure yet; this profile is updated as new documents land.

Educational content, not investment advice.

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