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KYNB · Current Report (Form 8-K) · Filed November 6, 2025

Kyntra Bio Inc — Current Report (Form 8-K)

Form
8-K
Filed
November 6, 2025
Period
Nov 6, 2025
Ticker
KYNB
Accession
0001193125-25-269529
Boardroom Alpha · Filing insights

FibroGen closes China sale to AstraZeneca; receives $6.4m holdback plus $0.4m, on a sale of approximately $220 million.

About Kyntra Bio Inc
Market cap
$28M
1Y TSR
+5.3%
3Y TSR
−72.8%
Board grade
C-
Sector
Healthcare
CEO
Thane Wettig
Last annual meeting: Jun 12, 2026 · View full Kyntra Bio Inc profile →
8-K

 

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 06, 2025

 

 

FIBROGEN, INC.

(Exact name of Registrant as Specified in Its Charter)

 

 

Delaware

001-36740

77-0357827

(State or Other Jurisdiction
of Incorporation)

(Commission File Number)

(IRS Employer
Identification No.)

 

 

 

 

 

350 Bay Street

Suite 100 #6009

 

San Francisco, California

 

94133

(Address of Principal Executive Offices)

 

(Zip Code)

 

Registrant’s Telephone Number, Including Area Code: 415 978-1200

 

 

 

 

(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 class

 

Trading
Symbol(s)

 


Name of each exchange on which registered

Common Stock, $0.01 par value

 

FGEN

 

The Nasdaq Global Select Market

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.

 


Item 8.01 Other Events.

On November 6, 2025, FibroGen, Inc. (the “Company”) received a $6.4 million payment from AstraZeneca Treasury Limited (“AstraZeneca”). This amount is in full satisfaction of the first holdback set forth in the share purchase agreement entered into between the Company and AstraZeneca on February 20, 2025 (the “Share Purchase Agreement”), plus $0.4 million that was an additional payment following the final net cash adjustments after closing.

On August 29, 2025, the Company closed the sale of its China operations through FibroGen International (Hong Kong) Ltd. to AstraZeneca pursuant to the Share Purchase Agreement for a total consideration of approximately $220 million comprised of $85 million in enterprise value and approximately $135 million in net cash held in China. The total consideration included $210 million paid at closing, and $10.0 million payable by AstraZeneca after closing and subject to the following holdbacks and conditions: (i) a $6.0 million holdback to offset final net cash adjustments, which was released today, following a customary adjustment process, and (ii) a $4.0 million holdback to satisfy any indemnity claims, which will be released, net of any claims paid or unresolved, nine months after the closing.

 

 

 

 

 


 

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

 

 

 

FIBROGEN, INC.

 

 

 

 

Date:

November 6, 2025

By:

/s/ John Alden

 

 

 

John Alden
General Counsel

 

 


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Reference

Frequently asked questions

When did Kyntra Bio Inc file this 8-K?
Kyntra Bio Inc (KYNB) filed this Current Report (Form 8-K) with the SEC on November 6, 2025. The accession number assigned by EDGAR is 0001193125-25-269529.
What does an 8-K disclose?
Form 8-K is the SEC's current-report form, used to disclose material events between periodic reports (10-K / 10-Q). Triggers include CEO/CFO departures, acquisitions, bankruptcies, earnings releases, auditor changes, changes in fiscal year, and amendments to corporate governance. Each 8-K is keyed to one or more Item numbers (1.01 through 9.01).
What is the key takeaway from this filing?
FibroGen closes China sale to AstraZeneca; receives $6.4m holdback plus $0.4m, on a sale of approximately $220 million. This is Boardroom Alpha's one-line summary of the current report; see the full filing text above for the formal disclosure.
What Item codes does an 8-K cover?
An 8-K's Item codes (1.01 through 9.01) specify what kind of event is being disclosed — e.g. Item 1.01 for entering a material agreement, Item 5.02 for departure/election of directors and executive officers, Item 8.01 for other events. The Item codes for this 8-K appear in the filing text above.
Where can I find Kyntra Bio Inc's prior current reports on EDGAR?
The SEC EDGAR browser lists every 8-K Kyntra Bio Inc has filed under CIK 921299, sortable by date. Use the "View on SEC EDGAR" link in the page header, or browse directly via https://www.sec.gov/cgi-bin/browse-edgar.
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