# EDGAR Filing Document

**Accession Number:** 0001839184
**File Stem:** 0000899243-23-009249
**Filing Date:** 2023-3
**Character Count:** 9380
**Document Hash:** 1440b6e2a468df96c2b15557c7b7c896
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0000899243-23-009249.hdr.sgml**: 20230321

**ACCESSION NUMBER**: 0000899243-23-009249

**CONFORMED SUBMISSION TYPE**: 4

**PUBLIC DOCUMENT COUNT**: 1

**CONFORMED PERIOD OF REPORT**: 20230316

**FILED AS OF DATE**: 20230321

**DATE AS OF CHANGE**: 20230321

**REPORTING-OWNER**: 

**OWNER DATA:**
- **COMPANY CONFORMED NAME:** Summit Healthcare Acquisition Sponsor LLC
- **CENTRAL INDEX KEY:** 0001839184
- **STATE OF INCORPORATION:** E9
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** 4
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-40466
- **FILM NUMBER:** 23747791

**BUSINESS ADDRESS:**
- **STREET 1:** UGLAND HOUSE, BOX 309
- **CITY:** GRAND CAYMAN
- **STATE:** E9
- **ZIP:** KY1-1104
- **BUSINESS PHONE:** 212-446-4800

**MAIL ADDRESS:**
- **STREET 1:** UGLAND HOUSE, BOX 309
- **CITY:** GRAND CAYMAN
- **STATE:** E9
- **ZIP:** KY1-1104
**ISSUER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Summit Healthcare Acquisition Corp.
- **CENTRAL INDEX KEY:** 0001839185
- **STANDARD INDUSTRIAL CLASSIFICATION:** BLANK CHECKS [6770]
- **IRS NUMBER:** 000000000
- **STATE OF INCORPORATION:** E9
- **FISCAL YEAR END:** 1231

**BUSINESS ADDRESS:**
- **STREET 1:** UGLAND HOUSE, BOX 309
- **CITY:** GRAND CAYMAN
- **STATE:** E9
- **ZIP:** KY1-1104
- **BUSINESS PHONE:** 212-446-4800

**MAIL ADDRESS:**
- **STREET 1:** UGLAND HOUSE, BOX 309
- **CITY:** GRAND CAYMAN
- **STATE:** E9
- **ZIP:** KY1-1104

### UNITED STATES SECURITIES AND EXCHANGE COMMISSION
**Washington, D.C. 20549**

## FORM 4

### STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

[x] Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

[ ] Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

---

| | | |
|:---|:---|:---|
| **1. Name and Address of Reporting Person**<sup>*</sup><br>Summit Healthcare Acquisition Sponsor LLC<br><sub>(Last) (First) (Middle)</sub><br>UNIT 1101, 11TH FLOOR, 1 LYNDHURST TOWER<br>1 LYNDHURST TERRACE<br><sub>(Street)</sub><br>CENTRAL, HONG KONG, K3 <br><sub>(City) (State) (Zip)</sub> | **3. Date of Earliest Transaction (Month/Day/Year)**<br>2023-03-16 | **5. Relationship of Reporting Person(s) to Issuer**<br>(Check all applicable)<br>[ ] Director [X] 10% Owner<br>[ ] Officer (give title below) [ ] Other (specify below)<br>_ _ |
| **2. Issuer Name and Ticker or Trading Symbol**<br>Summit Healthcare Acquisition Corp. [ SMIHU ] | **4. If Amendment, Date of Original Filed (Month/Day/Year)**<br>  | **6. Individual or Joint/Group Filing (Check Applicable Line)**<br>[X] Form filed by One Reporting Person<br>[ ] Form filed by More than One Reporting Person |

---

## Table I - Non-Derivative Securities

---

|  |  |  |  |  |  |  |  |  |  |  |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1. Title of Security | 2. Transaction Date | 2A. Deemed Execution Date | 3. Transaction Code (V) | 3. Transaction Code (V) | 4. Securities Acquired (A) or Disposed of (D) | 4. Securities Acquired (A) or Disposed of (D) | 4. Securities Acquired (A) or Disposed of (D) | 5. Amount of Securities Beneficially Owned | 6. Ownership Form | 7. Nature of Indirect Beneficial Ownership |
| 1. Title of Security | 2. Transaction Date | 2A. Deemed Execution Date | Code | V | Amount | (A) or (D) | Price | 5. Amount of Securities Beneficially Owned | 6. Ownership Form | 7. Nature of Indirect Beneficial Ownership |
|  |  |  |  |  |  |  |  |  |  |  |

---

## Table II - Derivative Securities

---

|  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1. Title of Derivative Security | 2. Conversion or Exercise Price | 3. Transaction Date | 3A. Deemed Execution Date | 4. Transaction Code (V) | 4. Transaction Code (V) | 5. Number of Derivative Securities Acquired (A) or Disposed of (D) | 5. Number of Derivative Securities Acquired (A) or Disposed of (D) | 6. Date Exercisable and Expiration Date | 6. Date Exercisable and Expiration Date | 7. Title and Amount of Underlying Securities | 7. Title and Amount of Underlying Securities | 8. Price of Derivative Security | 9. Number of Derivative Securities Beneficially Owned | 10. Ownership Form | 11. Nature of Indirect Beneficial Ownership |
| 1. Title of Derivative Security | 2. Conversion or Exercise Price | 3. Transaction Date | 3A. Deemed Execution Date | Code | V | (A) | (D) | Date Exercisable | Expiration Date | Title | Amount or Number of Shares | 8. Price of Derivative Security | 9. Number of Derivative Securities Beneficially Owned | 10. Ownership Form | 11. Nature of Indirect Beneficial Ownership |
| Class B Ordinary Shares | <sup>(1)</sup> | 2023-03-16 |  | D<sup>(2)(3)</sup> |  |  | 5300000 | <sup>(1)</sup> | <sup>(1)</sup> | Class A Ordinary Shares | 5300000 | <sup>(2)(3)</sup> | 0 | D |  |
| Private Placement Warrants | <sup>(4)(5)</sup> | 2023-03-16 |  | D<sup>(6)</sup> |  |  | 6000000 | <sup>(4)(5)</sup> | <sup>(4)(5)</sup> | Class A Ordinary Shares | 6000000 | <sup>(6)</sup> | 0<sup>(6)</sup> | D |  |

---

### Footnotes:

(1) As described in the prospectus for the initial public offering (File No. 333-255722) of Summit Healthcare Acquisition Corp. ("SMIH") under the heading "Description of Securities--Founder Shares," the Class B ordinary shares, par value $0.0001 per share, will automatically convert into Class A ordinary shares, par value $0.0001 per share, of the issuer at the time of the issuer's initial business combination, on a one-for-one basis, subject to adjustment for share splits, share capitalizations, reorganizations, recapitalizations and the like, and certain anti-dilution rights and have no expiration date.

(2) On March 16, 2023, pursuant to a Business Combination Agreement dated as of September 29, 2022 (the "Business Combination Agreement"), by and among SMIH, YishengBio Co., Ltd ("YS Biopharma"), Oceanview Bioscience Acquisition Co., Ltd., a direct wholly owned subsidiary of YS Biopharma ("Merger Sub I") and Hudson Biomedical Group Co., Ltd., a direct wholly owned subsidiary of YS Biopharma ("Merger Sub II"), (i) Merger Sub I merged with and into SMIH (the "First Merger"), with SMIH surviving the First Merger as the surviving entity (the "Surviving Entity") and remaining as a wholly-owned subsidiary of YS Biopharma and (ii) the Surviving Entity merged with and into Merger Sub II (the "Second Merger"), with Merger Sub II surviving the Second Merger as the surviving company (the "Surviving Company") and remaining as a wholly-owned subsidiary of YS Biopharma.

(3) (Continued from Footnote 2) Immediately before the effective time of the First Merger (the "First Merger Effective Time"), an aggregate of 1,446,525 Class B ordinary shares held by Summit Healthcare Acquisition Sponsor LLC, a Cayman Islands limited liability company (the "Sponsor") was surrendered for nil consideration, and after such surrender, each Class B ordinary share ceased to be outstanding and automatically converted into the right to receive one Ordinary Share of YS Biopharma.

(4) Each Private Placement Warrant is exercisable to purchase one Class A ordinary share at an exercise price of $11.50 per share.

(5) As described in the prospectus for the initial public offering (File No. 333-255722) of SMIH under the heading "Description of Securities--Warrants," the Private Placement Warrants are identical to the warrants sold in connection with the Issuer's initial public offering and upon conversion of working capital loans, except that the Private Placement Warrants, so long as they are held by the Sponsor or its permitted transferees, (i) are not redeemable by the Issuer, (ii) may not (including the Class A ordinary shares of the Issuer issuable upon exercise of such warrants), subject to certain limited exceptions, be transferred, assigned or sold by until 30 days after the completion of the Issuer's initial business combination, (iii) may be exercised by the holders on a cashless basis and (iv) are entitled to registration rights.

(6) Immediately prior to the First Merger Effective Time, each whole Private Placement Warrant outstanding ceased be a warrant with respect to Class A ordinary shares, and was assumed by YS Biopharma and converted into a warrant to purchase one YS Biopharma Ordinary Share, subject to substantially the same terms and conditions prior to the First Merger Effective Time.

**Signature:** By: /s/ Bo Tan  
**Date:** 2023-03-21

### Remarks:

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.

* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).

** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).

Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.

**Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.**