Sec Form 4 Filing - BioPlus Sponsor LLC @ BioPlus Acquisition Corp. - 2023-06-05

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

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person BioPlus Sponsor LLC 2. Issuer Name and Ticker or Trading Symbol BioPlus Acquisition Corp. [ BIOS] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director X __ 10% Owner _____ Officer (give title below) _____ Other (specify below) (Last) (First) (Middle) 630 RAMONA STREET 3. Date of Earliest Transaction (MM/DD/YY) 06/05/2023 (Street) PALO ALTO, CA94301 4. If Amendment, Date Original Filed (MM/DD/YY) 6. Individual or Joint/Group Filing (Check Applicable Line) _____ Form filed by One Reporting Person __ X __ Form filed by More than One Reporting Person (City) (State) (Zip)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned 1.Title of Security (Instr. 3) 2. Transaction Date (MM/DD/YY) 2A. Deemed Execution Date, if any (MM/DD/YY) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4) Code V Amount (A) or (D) Price Class A Ordinary Shares 06/05/2023 C 5,749,999 ( 1 ) A 6,629,999 ( 2 ) I See footnote ( 3 )

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned ( e.g. , puts, calls, warrants, options, convertible securities) 1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (MM/DD/YY) 3A. Deemed Execution Date, if any (MM/DD/YY) 4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4, and 5) 6. Date Exercisable and Expiration Date (MM/DD/YY) 7. Title and Amount of Underlying Securities (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4) Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares Class B Ordinary Shares ( 1 ) 06/05/2023 C( 1 ) 5,749,999 ( 1 ) ( 1 ) Class A Ordinary Shares 5,749,999 ( 1 ) 1 I See footnote ( 3 )

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other BioPlus Sponsor LLC 630 RAMONA STREET PALO ALTO, CA94301 X Explorer Parent LLC 630 RAMONA STREET PALO ALTO, CA94301 X Founder Holdings LLC 630 RAMONA STREET PALO ALTO, CA94301 X VIEUX ALEX SERGE 630 RAMONA STREET PALO ALTO, CA94301 X Fletcher Steven C. 630 RAMONA STREET PALO ALTO, CA94301 X Signatures /s/ Explorer Parent LLC, By: Founder Holdings LLC, its managing member, By: Steven Fletcher, a Managing Member, By: /s/ Alex Vieux, a Managing Member 06/09/2023 Signature of Reporting Person Date /s/ BioPlus Sponsor LLC, By: /s/ Steven Fletcher, a Managing Member 06/09/2023 Signature of Reporting Person Date /s/ Founder Holdings LLC; By: /s/ Steven Fletcher, a Managing Member, By: /s/ Alex Vieux, a Managing Member 06/09/2023 Signature of Reporting Person Date /s/ Steven Fletcher 06/09/2023 Signature of Reporting Person Date /s/ Alex Vieux 06/09/2023 Signature of Reporting Person Date

Explanation of Responses:

( 1 )The shares of Class B ordinary shares, par value $0.0001 per share ("Class B Ordinary Shares"), of the issuer are convertible into an equal number of shares of Class A ordinary shares, par value $0.0001 per share ("Class A Ordinary Shares"), of the issuer and have no expiration date. On June 5, 2023, the reporting person elected to convert 5,749,999 of their Class B Ordinary Shares into an equal number of Class A Ordinary Shares. ( 2 )Includes (i) 380,000 placement units purchased by BioPlus Sponsor LLC (the "Sponsor") for $10.00 per unit in a private placement transaction with the Issuer and (ii) a Sponsor loan in the amount of $5,000,000 that is convertible into 500,000 additional units. Each such unit consists of one Class A Ordinary Share and one-half of one redeemable warrant. Each whole warrant entitles the holder thereof to purchase one Class A Ordinary Share at a price of $11.50 per share, subject to adjustment. The warrants will become exercisable 30 days after the completion of the Issuer's business combination transaction. ( 3 )The Sponsor is the record holder of the securities reported herein. Alex Vieux and Steven Fletcher are managing members of Sponsor and of Founder Holdings LLC, which is the managing member of Explorer Parent LLC, which is a member of the Sponsor. By virtue of these relationships, each of these entities and individuals may be deemed to share beneficial ownership of the securities held of record by the Sponsor. Each of them disclaims any such beneficial ownership except to the extent of their pecuniary interest therein.

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).

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