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Jasper Therapeutics, Inc.

For the period ended Nov 2, 2026. Filed Nov 4, 2026.

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A notice of a major event between regular reports, such as results, a deal or a change of executives. It is often the first formal record of the news.

Nov 2, 2026 · Filed Nov 4, 2026

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JSPR$16.86Day change unavailableStored close · as of Nov 6, 2026
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UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

Date of Report (Date of earliest event reported): November 2, 2026

JASPER THERAPEUTICS, INC.

(Exact name of Registrant as specified in its charter)

Delaware001-3913884-2984849
(State or Other Jurisdiction of Incorporation)(Commission File Number)(I.R.S. Employer Identification No.)

2200 Bridge Pkwy Suite #102

Redwood City, CA 94065

(650)549-1400

(Address, Including Zip Code, and Telephone Number, Including Area Code, of Registrant’s Principal Executive Offices)

Not Applicable

(Former name or former address, if changed since last report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

☐Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)
☐Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)
☐Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))
☐Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act:

Title of each classTrading Symbol(s)Name of each exchange on which registered
Voting Common Stock, par value $0.0001 per shareJSPRThe Nasdaq Stock Market LLC

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).

Emerging growth company☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act.☐

To the extent required by Item 3.03 of Form 8-K, the information set forth in Item 5.03 of this Current Report on Form 8-K is incorporated by reference into this Item 3.03.

On November 2, 2026, Jasper Therapeutics, Inc. (the “Company”) filed a Certificate of Third Amendment to its Second Amended and Restated Certificate of Incorporation, as amended (the “Certificate of Amendment”), with the Secretary of State of the State of Delaware to effect a 1-for-30 reverse stock split (the “Reverse Stock Split”) of the shares of the Company’s voting common stock, par value $0.0001 per share (“Common Stock”).

As previously disclosed, at the Company’s

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