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    SEC Form SC 13G/A filed by Jasper Therapeutics Inc. (Amendment)

    2/14/24 6:18:35 PM ET
    $JSPR
    Biotechnology: Biological Products (No Diagnostic Substances)
    Health Care
    Get the next $JSPR alert in real time by email
    SC 13G/A 1 tm245287d12_sc13ga.htm SC 13G/A

     

    UNITED STATES

    SECURITIES AND EXCHANGE COMMISSION

    Washington, D.C. 20549

     

    SCHEDULE 13G*

    (Rule 13d-102)

     

    INFORMATION TO BE INCLUDED IN STATEMENTS FILED PURSUANT

    TO § 240.13d-1(b), (c), AND (d) AND AMENDMENTS THERETO FILED

    PURSUANT TO § 240.13d-2

    (Amendment No. 3)*

     

     

    Jasper Therapeutics, Inc.
    (Name of Issuer)
     
    Voting Common Stock, par value $0.0001 per share (the “Shares”)
    (Title of Class of Securities)
     
    471871103
    (CUSIP Number)
     
    December 31, 2023
    (Date of Event Which Requires Filing of the Statement)

     

     

    Check the appropriate box to designate the rule pursuant to which this Schedule is filed:

     

    o Rule 13d-1(b)
    x Rule 13d-1(c)
    o Rule 13d-1(d)

     

    * The remainder of this cover page shall be filled out for a reporting person’s initial filing on this form with respect to the subject class of securities, and for any subsequent amendment containing information which would alter the disclosures provided in a prior cover page.

     

     

    The information required in the remainder of this cover page shall not be deemed to be “filed” for the purpose of Section 18 of the Securities Exchange Act of 1934 (“Act”) or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act (however, see the Notes).

     

     

     

     

     

    CUSIP No. 471871103 13G Page 2 of 13 Pages

     

     

    1.

    NAME OF REPORTING PERSONS

     

    Citadel Advisors LLC

    2.

    CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP

    (a)     o

    (b)     o

     

    3.

    SEC USE ONLY

     

    4.

    CITIZENSHIP OR PLACE OF ORGANIZATION

     

    Delaware

    NUMBER OF
    SHARES
    BENEFICIALLY
    OWNED BY
    EACH
    REPORTING
    PERSON
    WITH
    5.

    SOLE VOTING POWER

     

    0

    6.

    SHARED VOTING POWER

     

    26,700 Shares

    7.

    SOLE DISPOSITIVE POWER

     

    0

    8.

    SHARED DISPOSITIVE POWER

     

    See Row 6 above

    9.

    AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

     

    See Row 6 above

    10.

    CHECK IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES

    o

     

    11.

    PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)

     

    0.0%1

    12.

    TYPE OF REPORTING PERSON

     

    IA; OO; HC

           

     

    _________________________

    1 The percentages reported in this Schedule 13G are based upon 111,575,526 Shares outstanding comprised of (i) 111,575,261 Shares outstanding as of October 31, 2023 (according to the issuer’s Form 10-Q as filed with the Securities and Exchange Commission on November 9, 2023), and (ii) 265 Shares issuable upon conversion of certain warrants held by affiliates of the Reporting Persons.

     

     

     

     

     

    CUSIP No. 471871103 13G Page 3 of 13 Pages

     

     

    1.

    NAME OF REPORTING PERSONS

     

    Citadel Advisors Holdings LP

    2.

    CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP

    (a)     o

    (b)     o

     

    3.

    SEC USE ONLY

     

    4.

    CITIZENSHIP OR PLACE OF ORGANIZATION

     

    Delaware

    NUMBER OF
    SHARES
    BENEFICIALLY
    OWNED BY
    EACH
    REPORTING
    PERSON
    WITH
    5.

    SOLE VOTING POWER

     

    0

    6.

    SHARED VOTING POWER

     

    26,700 Shares

    7.

    SOLE DISPOSITIVE POWER

     

    0

    8.

    SHARED DISPOSITIVE POWER

     

    See Row 6 above

    9.

    AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

     

    See Row 6 above

    10.

    CHECK IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES

    o

     

    11.

    PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)

     

    0.0%

    12.

    TYPE OF REPORTING PERSON

     

    PN; HC

           

     

     

     

     

     

    CUSIP No. 471871103 13G Page 4 of 13 Pages

     

     

    1.

    NAME OF REPORTING PERSONS

     

    Citadel GP LLC

    2.

    CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP

    (a)     o

    (b)     o

     

    3.

    SEC USE ONLY

     

    4.

    CITIZENSHIP OR PLACE OF ORGANIZATION

     

    Delaware

    NUMBER OF
    SHARES
    BENEFICIALLY
    OWNED BY
    EACH
    REPORTING
    PERSON
    WITH
    5.

    SOLE VOTING POWER

     

    0

    6.

    SHARED VOTING POWER

     

    26,700 Shares

    7.

    SOLE DISPOSITIVE POWER

     

    0

    8.

    SHARED DISPOSITIVE POWER

     

    See Row 6 above

    9.

    AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

     

    See Row 6 above

    10.

    CHECK IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES

    o

     

    11.

    PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)

     

    0.0%

    12.

    TYPE OF REPORTING PERSON

     

    OO; HC

           

     

     

     

     

     

    CUSIP No. 471871103 13G Page 5 of 13 Pages

     

     

    1.

    NAME OF REPORTING PERSONS

     

    Citadel Securities LLC

    2.

    CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP

    (a)     o

    (b)     o

     

    3.

    SEC USE ONLY

     

    4.

    CITIZENSHIP OR PLACE OF ORGANIZATION

     

    Delaware

    NUMBER OF
    SHARES
    BENEFICIALLY
    OWNED BY
    EACH
    REPORTING
    PERSON
    WITH
    5.

    SOLE VOTING POWER

     

    0

    6.

    SHARED VOTING POWER

     

    203,920 Shares

    7.

    SOLE DISPOSITIVE POWER

     

    0

    8.

    SHARED DISPOSITIVE POWER

     

    See Row 6 above

    9.

    AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

     

    See Row 6 above

    10.

    CHECK IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES

    o

     

    11.

    PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)

     

    0.2%

    12.

    TYPE OF REPORTING PERSON

     

    BD; OO

           

     

     

     

     

     

    CUSIP No. 471871103 13G Page 6 of 13 Pages

     

     

    1.

    NAME OF REPORTING PERSONS

     

    Citadel Securities Group LP

    2.

    CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP

    (a)     o

    (b)     o

     

    3.

    SEC USE ONLY

     

    4.

    CITIZENSHIP OR PLACE OF ORGANIZATION

     

    Delaware

    NUMBER OF
    SHARES
    BENEFICIALLY
    OWNED BY
    EACH
    REPORTING
    PERSON
    WITH
    5.

    SOLE VOTING POWER

     

    0

    6.

    SHARED VOTING POWER

     

    203,920 Shares

    7.

    SOLE DISPOSITIVE POWER

     

    0

    8.

    SHARED DISPOSITIVE POWER

     

    See Row 6 above

    9.

    AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

     

    See Row 6 above

    10.

    CHECK IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES

    o

     

    11.

    PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)

     

    0.2%

    12.

    TYPE OF REPORTING PERSON

     

    PN; HC

           

     

     

     

     

     

    CUSIP No. 471871103 13G Page 7 of 13 Pages

     

     

    1.

    NAME OF REPORTING PERSONS

     

    Citadel Securities GP LLC

    2.

    CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP

    (a)     o

    (b)     o

     

    3.

    SEC USE ONLY

     

    4.

    CITIZENSHIP OR PLACE OF ORGANIZATION

     

    Delaware

    NUMBER OF
    SHARES
    BENEFICIALLY
    OWNED BY
    EACH
    REPORTING
    PERSON
    WITH
    5.

    SOLE VOTING POWER

     

    0

    6.

    SHARED VOTING POWER

     

    203,920 Shares

    7.

    SOLE DISPOSITIVE POWER

     

    0

    8.

    SHARED DISPOSITIVE POWER

     

    See Row 6 above

    9.

    AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

     

    See Row 6 above

    10.

    CHECK IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES

    o

     

    11.

    PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)

     

    0.2%

    12.

    TYPE OF REPORTING PERSON

     

    OO; HC

           

     

     

     

     

     

    CUSIP No. 471871103 13G Page 8 of 13 Pages

     

     

    1.

    NAME OF REPORTING PERSONS

     

    Kenneth Griffin

    2.

    CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP

    (a)     o

    (b)     o

     

    3.

    SEC USE ONLY

     

    4.

    CITIZENSHIP OR PLACE OF ORGANIZATION

     

    U.S. Citizen

    NUMBER OF
    SHARES
    BENEFICIALLY
    OWNED BY
    EACH
    REPORTING
    PERSON
    WITH
    5.

    SOLE VOTING POWER

     

    0

    6.

    SHARED VOTING POWER

     

    230,620 Shares

    7.

    SOLE DISPOSITIVE POWER

     

    0

    8.

    SHARED DISPOSITIVE POWER

     

    See Row 6 above

    9.

    AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

     

    See Row 6 above

    10.

    CHECK IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES

    o

     

    11.

    PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)

     

    0.2%

    12.

    TYPE OF REPORTING PERSON

     

    IN; HC

           

     

     

     

     

     

    CUSIP No. 471871103 13G Page 9 of 13 Pages

     

     

    Item 1(a). Name of Issuer:
       
      Jasper Therapeutics, Inc.
       
    Item 1(b). Address of Issuer’s Principal Executive Offices:
       
      2200 Bridge Pkwy, Suite #102, Redwood City, CA 94065 United States 
       
    Item 2(a). Name of Person Filing:
       
      This Schedule 13G is being jointly filed by Citadel Advisors LLC (“Citadel Advisors”), Citadel Advisors Holdings LP (“CAH”), Citadel GP LLC (“CGP”), Citadel Securities LLC (“Citadel Securities”), Citadel Securities Group LP (“CALC4”), Citadel Securities GP LLC (“CSGP”) and Mr. Kenneth Griffin (collectively with Citadel Advisors, CAH, CGP, Citadel Securities, CALC4 and CSGP, the “Reporting Persons”) with respect to the Shares of the above-named issuer owned by Citadel Multi-Strategy Equities Master Fund Ltd., a Cayman Islands company (“CM”), and Citadel Securities.  Such owned Shares may include other instruments exercisable for or convertible into Shares.
       
      Citadel Advisors is the portfolio manager for CM. CAH is the sole member of Citadel Advisors. CGP is the general partner of CAH. CALC4 is the non-member manager of Citadel Securities.  CSGP is the general partner of CALC4.  Mr. Griffin is the President and Chief Executive Officer of CGP, and owns a controlling interest in CGP and CSGP.
       
      The filing of this statement shall not be construed as an admission that any of the Reporting Persons is the beneficial owner of any securities covered by the statement other than the securities actually owned by such person (if any).
       
    Item 2(b). Address or Principal Business Office or, if none, Residence:
       
      The address of each of the Reporting Persons is Southeast Financial Center, 200 S. Biscayne Blvd., Suite 3300, Miami, Florida 33131.
       
    Item 2(c). Citizenship:
       
      Each of Citadel Advisors, CGP, Citadel Securities and CSGP is organized as a limited liability company under the laws of the State of Delaware.  Each of CALC4 and CAH is organized as a limited partnership under the laws of the State of Delaware.  Mr. Griffin is a U.S. citizen.
       
    Item 2(d). Title of Class of Securities:
       
      Voting Common Stock, par value $0.0001 per share
       
    Item 2(e). CUSIP Number:
       
      471871103

     

     

     

     

     

    CUSIP No. 471871103 13G Page 10 of 13 Pages

     

     

    Item 3. If this statement is filed pursuant to §§ 240.13d-1(b), or 240.13d-2(b) or (c), check whether the person filing is a:
       
      (a) ¨ Broker or dealer registered under Section 15 of the Act (15 U.S.C. 78o);
      (b) ¨ Bank as defined in Section 3(a)(6) of the Act (15 U.S.C. 78c);
      (c) ¨ Insurance company as defined in Section 3(a)(19) of the Act (15 U.S.C. 78c);
      (d) ¨ Investment company registered under Section 8 of the Investment Company Act of 1940 (15 U.S.C. 80a-8);
      (e) ¨ An investment adviser in accordance with § 240.13d-1(b)(1)(ii)(E);
      (f) ¨ An employee benefit plan or endowment fund in accordance with § 240.13d-1(b)(1)(ii)(F);
      (g) ¨ A parent holding company or control person in accordance with § 240.13d-1(b)(1)(ii)(G);
      (h) ¨ A savings association as defined in Section 3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813);
      (i) ¨ A church plan that is excluded from the definition of an investment company under Section 3(c)(14) of the Investment Company Act (15 U.S.C. 80a-3);
      (j) ¨ A non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J);
      (k) ¨ Group, in accordance with § 240.13d-1(b)(1)(ii)(K).
             
      If filing as a non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J), please specify the type of institution: ____________.
             
    Item 4. Ownership:
             
      A. Citadel Advisors LLC, Citadel Advisors Holdings LP and Citadel GP LLC
             
        (a) Each of Citadel Advisors LLC, Citadel Advisors Holdings LP and Citadel GP LLC may be deemed to beneficially own 26,700 Shares.
             
        (b) The number of Shares that each of Citadel Advisors LLC, Citadel Advisors Holdings LP and Citadel GP LLC may be deemed to beneficially own constitutes 0.0% of the Shares outstanding.
             
        (c) Number of Shares as to which such person has:
             
          (i) sole power to vote or to direct the vote:  0
             
          (ii) shared power to vote or to direct the vote:  26,700
             
          (iii) sole power to dispose or to direct the disposition of:  0
             
          (iv) shared power to dispose or to direct the disposition of:  26,700

     

     

     

     

     

    CUSIP No. 471871103 13G Page 11 of 13 Pages

     

     

      B. Citadel Securities LLC
             
        (a) Citadel Securities LLC may be deemed to beneficially own 203,920 Shares.
           
        (b) The number of Shares that Citadel Securities LLC may be deemed to beneficially own constitutes 0.2% of the Shares outstanding.
           
        (c) Number of shares of Shares as to which such person has:
           
          (i) sole power to vote or to direct the vote:  0
             
          (ii) shared power to vote or to direct the vote:  203,920
             
          (iii) sole power to dispose or to direct the disposition of:  0
             
          (iv) shared power to dispose or to direct the disposition of:  203,920
             
      C. Citadel Securities Group LP and Citadel Securities GP LLC
             
        (a) Each of Citadel Securities Group LP and Citadel Securities GP LLC may be deemed to beneficially own 203,920 Shares.
           
        (b) The number of Shares that each of Citadel Securities Group LP and Citadel Securities GP LLC may be deemed to beneficially own constitutes 0.2% of the Shares outstanding.
           
        (c) Number of Shares as to which such person has:
           
          (i) sole power to vote or to direct the vote:  0
             
          (ii) shared power to vote or to direct the vote:  203,920
             
          (iii) sole power to dispose or to direct the disposition of:  0
             
          (iv) shared power to dispose or to direct the disposition of:  203,920
             

     

     

     

     

     

    CUSIP No. 471871103 13G Page 12 of 13 Pages

     

     

      D. Kenneth Griffin
             
        (a) Mr. Griffin may be deemed to beneficially own 230,620 Shares.
           
        (b) The number of Shares that Mr. Griffin may be deemed to beneficially own constitutes 0.2% of the Shares outstanding.
           
        (c) Number of Shares as to which such person has:
           
          (i) sole power to vote or to direct the vote:  0
             
          (ii) shared power to vote or to direct the vote:  230,620
             
          (iii) sole power to dispose or to direct the disposition of:  0
             
          (iv) shared power to dispose or to direct the disposition of:  230,620

     

    Item 5. Ownership of Five Percent or Less of a Class:
       
      If this statement is being filed to report the fact that as of the date hereof the reporting person has ceased to be the beneficial owner of more than 5 percent of the class of securities, check the following.   x
       
    Item 6. Ownership of More Than Five Percent on Behalf of Another Person:
       
      Not Applicable
       
    Item 7. Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on By the Parent Holding Company:
       
      Not Applicable
       
    Item 8. Identification and Classification of Members of the Group:
       
      Not Applicable
       
    Item 9. Notice of Dissolution of Group:
       
      Not Applicable
       
    Item 10. Certifications:
       
      By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect.

     

     

     

     

     

    CUSIP No. 471871103 13G Page 13 of 13 Pages

     

     

    SIGNATURE

     

    After reasonable inquiry and to the best of its knowledge and belief, the undersigned certify that the information set forth in this statement is true, complete and correct.

     

    Dated February 14, 2024.

     

    CITADEL SECURITIES LLC   CITADEL ADVISORS LLC  
               
    By: /s/ Guy Miller   By: /s/ Seth Levy  
      Guy Miller, Authorized Signatory     Seth Levy, Authorized Signatory  
               
               
    CITADEL SECURITIES GROUP LP   CITADEL ADVISORS HOLDINGS LP  
               
    By: /s/ Guy Miller   By: /s/ Seth Levy  
      Guy Miller, Authorized Signatory     Seth Levy, Authorized Signatory  
               
               
    CITADEL SECURITIES GP LLC   CITADEL GP LLC  
               
    By: /s/ Guy Miller   By: /s/ Seth Levy  
      Guy Miller, Authorized Signatory     Seth Levy, Authorized Signatory  
               
               
          KENNETH GRIFFIN  
               
          By: /s/ Seth Levy  
            Seth Levy, attorney-in-fact*  

     

     

    _________________________

    * Seth Levy is signing on behalf of Kenneth Griffin as attorney-in-fact pursuant to a power of attorney previously filed with the Securities and Exchange Commission, and hereby incorporated by reference herein.  The power of attorney was filed as an attachment to a filing by Citadel Advisors LLC on Schedule 13G for Allakos Inc. on October 13, 2023.

     

     

     

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    Thomas Wiggans appointed Executive Chairperson  Jasper to host an investor webinar on January 8th at 8:00am ET to present updated data from the BEACON study in CSU and the open-label extension study in CSU and CIndU REDWOOD CITY, Calif., Jan. 07, 2026 (GLOBE NEWSWIRE) -- Jasper Therapeutics, Inc. (NASDAQ:JSPR) (Jasper or the Company), a clinical stage biotechnology company focused on development of briquilimab, a novel antibody therapy targeting KIT (CD117) to address mast cell driven diseases such as chronic spontaneous urticaria (CSU), chronic inducible urticaria (CIndU) and asthma, announced that its Board of Directors has appointed Jeet Mahal as President and Chief Executive Officer

    1/7/26 4:30:00 PM ET
    $JSPR
    Biotechnology: Biological Products (No Diagnostic Substances)
    Health Care

    Jasper Therapeutics Reports Positive Preliminary Data from ETESIAN Study of Briquilimab in Asthma and Findings from BEACON Study Internal Investigation

    Reductions in airway hyperresponsiveness and suppressed eosinophilic response at both 6 weeks and 12 weeks observed after a single 180mg dose of Briquilimab in the ETESIAN Study Preliminary data from ETESIAN study supports further development of briquilimab in asthma Jasper also announces completion of internal BEACON study investigation noting no deviations or issues with drug product utilized Jasper to host conference call and webinar today at 8:00 a.m. ET REDWOOD CITY, Calif., Dec. 02, 2025 (GLOBE NEWSWIRE) -- Jasper Therapeutics, Inc. (NASDAQ:JSPR) (Jasper), a clinical stage biotechnology company focused on development of briquilimab, a novel antibody therapy targeting KIT (CD117)

    12/2/25 7:00:00 AM ET
    $JSPR
    Biotechnology: Biological Products (No Diagnostic Substances)
    Health Care

    $JSPR
    Insider Purchases

    Insider purchases reveal critical bullish sentiment about the company from key stakeholders. See them live in this feed.

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    Director Wiggans Thomas G bought $99,630 worth of Voting Common Stock (41,000 units at $2.43) (SEC Form 4)

    4 - Jasper Therapeutics, Inc. (0001788028) (Issuer)

    9/24/25 4:01:57 PM ET
    $JSPR
    Biotechnology: Biological Products (No Diagnostic Substances)
    Health Care

    Director Lucas Svetlana bought $48,600 worth of Voting Common Stock (20,000 units at $2.43) (SEC Form 4)

    4 - Jasper Therapeutics, Inc. (0001788028) (Issuer)

    9/24/25 4:01:38 PM ET
    $JSPR
    Biotechnology: Biological Products (No Diagnostic Substances)
    Health Care

    President and CEO Martell Ron bought $99,630 worth of Voting Common Stock (41,000 units at $2.43), increasing direct ownership by 124% to 74,118 units (SEC Form 4)

    4 - Jasper Therapeutics, Inc. (0001788028) (Issuer)

    9/24/25 4:01:19 PM ET
    $JSPR
    Biotechnology: Biological Products (No Diagnostic Substances)
    Health Care

    $JSPR
    Analyst Ratings

    Analyst ratings in real time. Analyst ratings have a very high impact on the underlying stock. See them live in this feed.

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    Rodman & Renshaw initiated coverage on Jasper Therapeutics with a new price target

    Rodman & Renshaw initiated coverage of Jasper Therapeutics with a rating of Buy and set a new price target of $17.00

    1/13/26 10:20:49 AM ET
    $JSPR
    Biotechnology: Biological Products (No Diagnostic Substances)
    Health Care

    Jasper Therapeutics downgraded by BMO Capital Markets with a new price target

    BMO Capital Markets downgraded Jasper Therapeutics from Outperform to Market Perform and set a new price target of $4.00

    7/8/25 8:30:26 AM ET
    $JSPR
    Biotechnology: Biological Products (No Diagnostic Substances)
    Health Care

    Jasper Therapeutics downgraded by RBC Capital Mkts with a new price target

    RBC Capital Mkts downgraded Jasper Therapeutics from Outperform to Sector Perform and set a new price target of $5.00

    7/8/25 8:30:05 AM ET
    $JSPR
    Biotechnology: Biological Products (No Diagnostic Substances)
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    SEC Filings

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    Jasper Therapeutics Inc. filed SEC Form 8-K: Other Events, Financial Statements and Exhibits

    8-K - Jasper Therapeutics, Inc. (0001788028) (Filer)

    1/8/26 7:06:57 AM ET
    $JSPR
    Biotechnology: Biological Products (No Diagnostic Substances)
    Health Care

    Jasper Therapeutics Inc. filed SEC Form 8-K: Leadership Update, Other Events, Financial Statements and Exhibits

    8-K - Jasper Therapeutics, Inc. (0001788028) (Filer)

    1/7/26 4:35:06 PM ET
    $JSPR
    Biotechnology: Biological Products (No Diagnostic Substances)
    Health Care

    SEC Form SCHEDULE 13G filed by Jasper Therapeutics Inc.

    SCHEDULE 13G - Jasper Therapeutics, Inc. (0001788028) (Subject)

    12/2/25 10:23:49 AM ET
    $JSPR
    Biotechnology: Biological Products (No Diagnostic Substances)
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    Leadership Updates

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    Jasper Therapeutics Announces Appointment of Svetlana Lucas Ph.D., to its Board of Directors

    REDWOOD CITY, Calif., June 19, 2024 (GLOBE NEWSWIRE) -- Jasper Therapeutics, Inc. (NASDAQ:JSPR) (Jasper), a clinical stage biotechnology company focused on development of briquilimab, a novel antibody therapy targeting c-Kit (CD117) to address mast cell driven diseases such as chronic spontaneous urticaria (CSU), chronic inducible urticaria (CIndU) and asthma, today announced the appointment of Svetlana Lucas, Ph.D., to Jasper's Board of Directors (the Board), effective as of June 18, 2024. Separately, Anna French, D. Phil., stepped down from the Board, effective as of June 18, 2024. "We are pleased to welcome Svetlana, an experienced and accomplished biopharmaceutical executive, to our B

    6/19/24 8:00:00 AM ET
    $JSPR
    Biotechnology: Biological Products (No Diagnostic Substances)
    Health Care

    Jasper Therapeutics Announces Appointment of Thomas G. Wiggans as Chairperson of the Board of Directors

    REDWOOD CITY, Calif., Nov. 01, 2023 (GLOBE NEWSWIRE) -- Jasper Therapeutics, Inc. (NASDAQ:JSPR) (Jasper), a biotechnology company focused on the development of briquilimab, a novel antibody therapy targeting c-Kit (CD117) to address mast cell driven diseases such as chronic spontaneous urticaria (CSU) and chronic inducible urticaria (CIndU), as well as lower to intermediate risk myelodysplastic syndromes (LR-MDS) and novel stem cell transplant conditioning regimens, today announced the appointment of Thomas G. Wiggans, a veteran biopharmaceutical executive, as Chairperson of Jasper's Board of Directors (the Board), effective immediately. Bill Lis is stepping down as Chairperson and will re

    11/1/23 8:00:00 AM ET
    $DERM
    $JSPR
    Biotechnology: Pharmaceutical Preparations
    Health Care
    Biotechnology: Biological Products (No Diagnostic Substances)

    Jasper Therapeutics Strengthens Management Team with Key Appointments

    Patricia Carlos Appointed Senior Vice President of Regulatory Affairs and Quality Annette Marcantonio Appointed Vice President of Clinical Operations REDWOOD CITY, Calif., Aug. 02, 2023 (GLOBE NEWSWIRE) -- Jasper Therapeutics, Inc. (NASDAQ:JSPR) (Jasper), a biotechnology company focused on the development of briquilimab, a novel antibody therapy targeting c-Kit (CD117) to address diseases such as chronic spontaneous urticaria (CSU), lower to intermediate risk myelodysplastic syndromes (LR-MDS) as well as novel stem cell transplant conditioning regimes, today announced the appointment of two seasoned pharma industry executives to its regulatory affairs, quality and clinical operations

    8/2/23 8:00:00 AM ET
    $JSPR
    Biotechnology: Biological Products (No Diagnostic Substances)
    Health Care

    $JSPR
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    Jasper Therapeutics Reports Positive Updated Data from Briquilimab Studies in Chronic Spontaneous Urticaria

    67% of additional patients (n=6) enrolled in the BEACON study achieved a complete response at 12 weeks with a mean UAS7 reduction of 31 points  75% of CSU participants (n=36) enrolled in the open label extension study achieved a complete response or well controlled disease at 12 weeks With a median duration of follow up of more than 200 days on 63 participants in the open label extension study, KIT related AEs were low in frequency and predominantly low-grade events that resolved while on study BEACON and open label extension data sets are now sufficient to select doses for the Phase 2b study of briquilimab in CSU planned to commence in the second half of 2026 Company to host conference

    1/8/26 7:00:00 AM ET
    $JSPR
    Biotechnology: Biological Products (No Diagnostic Substances)
    Health Care

    Jasper Therapeutics Reports Positive Preliminary Data from ETESIAN Study of Briquilimab in Asthma and Findings from BEACON Study Internal Investigation

    Reductions in airway hyperresponsiveness and suppressed eosinophilic response at both 6 weeks and 12 weeks observed after a single 180mg dose of Briquilimab in the ETESIAN Study Preliminary data from ETESIAN study supports further development of briquilimab in asthma Jasper also announces completion of internal BEACON study investigation noting no deviations or issues with drug product utilized Jasper to host conference call and webinar today at 8:00 a.m. ET REDWOOD CITY, Calif., Dec. 02, 2025 (GLOBE NEWSWIRE) -- Jasper Therapeutics, Inc. (NASDAQ:JSPR) (Jasper), a clinical stage biotechnology company focused on development of briquilimab, a novel antibody therapy targeting KIT (CD117)

    12/2/25 7:00:00 AM ET
    $JSPR
    Biotechnology: Biological Products (No Diagnostic Substances)
    Health Care

    Jasper Therapeutics Reports Positive Data from 180mg Cohort in SPOTLIGHT Study of Briquilimab in Chronic Inducible Urticaria

    11 of 12 participants (92%) enrolled in the 180mg cohort achieved a complete response 12 of 12 participants (100%) in the 180mg cohort achieved a clinical response Tryptase levels below the lower limit of quantification observed in 10 of 12 participants (83%) No serious adverse events and no grade 3 or higher adverse events reported in the 180mg cohort Company to host conference call and webinar on Monday, June 16, at 8:00 a.m. EDT REDWOOD CITY, Calif., June 14, 2025 (GLOBE NEWSWIRE) -- Jasper Therapeutics, Inc. (NASDAQ:JSPR) (Jasper), a clinical stage biotechnology company focused on development of briquilimab, a novel antibody therapy targeting KIT (CD117) to address mast cell drive

    6/14/25 10:00:23 AM ET
    $JSPR
    Biotechnology: Biological Products (No Diagnostic Substances)
    Health Care

    $JSPR
    Large Ownership Changes

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    Amendment: SEC Form SC 13G/A filed by Jasper Therapeutics Inc.

    SC 13G/A - Jasper Therapeutics, Inc. (0001788028) (Subject)

    11/14/24 6:01:49 PM ET
    $JSPR
    Biotechnology: Biological Products (No Diagnostic Substances)
    Health Care

    Amendment: SEC Form SC 13G/A filed by Jasper Therapeutics Inc.

    SC 13G/A - Jasper Therapeutics, Inc. (0001788028) (Subject)

    11/14/24 3:32:57 PM ET
    $JSPR
    Biotechnology: Biological Products (No Diagnostic Substances)
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    Amendment: SEC Form SC 13G/A filed by Jasper Therapeutics Inc.

    SC 13G/A - Jasper Therapeutics, Inc. (0001788028) (Subject)

    11/4/24 12:05:53 PM ET
    $JSPR
    Biotechnology: Biological Products (No Diagnostic Substances)
    Health Care