KYNB 8-K
Kyntra Bio, Inc. (KYNB)
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
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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:
Securities registered pursuant to Section 12(b) of the Act:
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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 5.03 Amendments to Articles of Incorporation or Bylaws; Change in Fiscal Year.
On December 29, 2025, FibroGen, Inc. (the “Company”) filed a Certificate of Amendment of the Amended and Restated Certificate of Incorporation (the “Certificate of Amendment”) with the Secretary of State of the State of Delaware changing the name of the Company from “FibroGen, Inc.” to “Kyntra Bio, Inc.”
The Certificate of Amendment shall be effective at 4:30 p.m. Eastern Time on January 7, 2026. The Board also approved the amendment of the Company’s Bylaws, effective at 4:30 p.m. Eastern Time on January 7, 2026, solely to update the title of the Bylaws to reflect the Company’s new name, Kyntra Bio, Inc.
The foregoing descriptions of the Certificate of Amendment and amendment of the Bylaws are qualified in their entirety by the full text of the Certificate of Amendment, and Bylaw amendment, respectively filed as Exhibit 3.1 and Exhibit 3.2 hereto and incorporated herein by reference.
Item 8.01 Other Events.
On January 7, 2026, the Company issued a press release announcing its name change to Kyntra Bio. A copy of the Company’s press release of such announcement is attached as Exhibit 99.1 to this Current Report on Form 8-K.
The Company’s common stock (formerly trading under the symbol “FGEN”) will begin trading at the market open on January 8, 2026 under the new trading symbol “KYNB.”
The CUSIP number for the common stock will remain unchanged (31572Q881).
The information in this Item 8.01, including Exhibit 99.1, shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, or otherwise subject to the liabilities of that Section or Sections 11 and 12(a)(2) of the Securities Act of 1933, as amended. The information contained in this Item 8.01 shall not be incorporated by reference into any filing with the U.S. Securities and Exchange Commission made by FibroGen, Inc. or Kyntra Bio, Inc., whether made before or after the date hereof, regardless of any general incorporation language in such filing.
Item 9.01 Financial Statements and Exhibits.
(d) Exhibits
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Exhibit No. |
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Description |
3.1 |
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Certificate of Amendment of the Amended and Restated Certificate of Incorporation. |
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3.2 |
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Certificate of Amendment of the Amended and Restated Bylaws. |
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99.1 |
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104 |
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Cover Page Interactive Data File (embedded within the Inline XBRL document). |
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 thereunto duly authorized.
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FibroGen, Inc. |
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Date: |
January 7, 2026 |
By: |
/s/ John Alden |
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John Alden |
Exhibit 3.1
Certificate of Amendment
of the Amended and Restated Certificate of Incorporation
of FibroGen, Inc.
FibroGen, Inc., a corporation organized and existing under and by virtue of the General Corporation Law of the State of Delaware, hereby certifies that:
First: The current name of the corporation is FibroGen, Inc.
Second: The date of filing of the original Certificate of Incorporation of FibroGen, Inc. with the Secretary of State of the State of Delaware was September 29, 1993 and the date of filings of the Amended and Restated Certificate of Incorporation of the Company with the Secretary of State of the State of Delaware was November 19, 2014 and Certificate of Amendment of the Amended and Restated Certificate of Incorporation on June 10, 2025.
THIRD: The FIRST Article of the Amended and Restated Certificate of Incorporation is hereby further amended to read in its entirety as follows:
“The name of this corporation is Kyntra Bio, Inc. (the “Company”).”
FOURTH: This Certificate of Amendment shall be effective at 4:30 p.m. Eastern Time on January 7, 2026.
IN WITNESS WHEREOF, said corporation has caused this Certificate of Amendment to be signed by its Chief Executive Officer this 29th day of December, 2025.
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/s/ Thane Wettig |
Thane Wettig |
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Chief Executive Officer |
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Exhibit 3.2
FIRST AMENDMENT TO AMENDED AND RESTATED BYLAWS
OF
FIBROGEN, INC.
(to be renamed “Kyntra Bio, Inc.”)
This First Amendment to the Amended and Restated Bylaws (this “Amendment”) of FibroGen, Inc., a Delaware corporation (the “Corporation”), is adopted by the Board of Directors pursuant to the authority granted under the Corporation’s Amended and Restated Bylaws and the General Corporation Law of the State of Delaware.
AMENDED AND RESTATED BYLAWS
OF
KYNTRA BIO, INC.
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/s/ John Alden |
John Alden |
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Secretary |
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Exhibit 99.1
FibroGen Rebrands as Kyntra Bio to Reflect a New Era of Focus and Momentum
SAN FRANCISCO, January 7, 2026 (GLOBE NEWSWIRE) – FibroGen, Inc. (Nasdaq: FGEN), today announced it is rebranding the company to Kyntra Bio, representing the next step of the transformation of the Company and its focus on oncology and rare disease assets. The Company’s common stock will begin trading under the new Nasdaq symbol “KYNB” at stock market open on January 8, 2026.
“2025 was a transformational year, highlighted by the sale of FibroGen China, the payoff of our senior secured term loan, and the extension of our cash runway into 2028. We begin this year as Kyntra Bio, a name that captures our company journey and evolution and reflects our purposeful move to a company obsessed with creating outsized impact for patients and shareholders,” said Thane Wettig, Chief Executive Officer of Kyntra Bio. “Today, with a sharpened direction, Kyntra Bio is laser-focused on our mid- and late-stage assets – specifically, FG-3246, our first-in-class, CD46 targeting antibody drug conjugate, and FG-3180, our companion PET imaging agent, currently in a Phase 2 monotherapy trial in prostate cancer, and roxadustat, our Phase 3 ready asset, for which we recently received Orphan Drug Designation in myelodysplastic syndromes. We are thrilled to move forward with renewed purpose into this bold era for our company and are excited for what is in front of us.”
Recent Highlights and Upcoming Milestones
FG-3246 (CD46 Targeting ADC) and FG-3180 (CD46 Targeting PET Imaging Agent)
Exhibit 99.1
Roxadustat
In addition to the new name, the Company is refreshing its corporate website to better reflect the Company’s strategy moving forward. The CUSIP number for the Company’s common stock is not affected by the name change.
About Kyntra Bio
Kyntra Bio is a biopharmaceutical company focused on development of novel therapies in oncology and rare disease. Roxadustat (爱瑞卓®, EVRENZOTM) is currently approved in Europe, Japan, and numerous other countries for the treatment of anemia in chronic kidney disease (CKD) patients on dialysis and not on dialysis. The Company continues to evaluate the development plan for the Phase 3 trial of roxadustat in anemia associated with lower-risk myelodysplastic syndrome (LR-MDS) in the U.S. FG-3246 (also known as FOR46), a first-in-class antibody-drug conjugate (ADC) targeting CD46, is in Phase 2 development for the treatment of metastatic castration-resistant prostate cancer. This program also includes the development of FG-3180, an associated CD46-targeted PET biomarker. For more information, please visit www.kyntrabio.com.
Forward-Looking Statements
This release contains forward-looking statements regarding Kyntra Bio’s strategy, future plans and prospects, including statements regarding its commercial products and clinical programs and those of its collaboration partners Fortis and UCSF. These forward-looking statements include, but are not limited to, statements regarding the efficacy, safety, and potential clinical or commercial success of Kyntra Bio products and product candidates, statements under the caption “Recent Highlights and Upcoming Milestones”, statements about regulatory interactions, the payoff of the Morgan Stanley Tactical Value term loan, statements regarding cash, such as the expectation that cash, cash equivalents and accounts receivable will be sufficient to fund Kyntra Bio’s operating plans into 2028, and statements about Kyntra Bio’s plans and objectives. These forward-looking statements are typically identified by use of terms such as “may,” “will”, “should,” “on track,” “could,” “expect,” “plan,” “anticipate,” “believe,” “estimate,” “predict,” “potential,” “continue” and similar words, although some forward-looking statements are expressed differently. Kyntra Bio’s actual results may differ materially from those indicated in these forward-looking statements due to risks and uncertainties related to the continued progress and timing of its various programs, including the enrollment and results from ongoing and potential future clinical trials, and other matters that are
Exhibit 99.1
described in Kyntra Bio’s most recent Annual Report on Form 10-K and Quarterly Report on Form 10-Q, each as filed with the Securities and Exchange Commission (SEC), including the risk factors set forth therein. Investors are cautioned not to place undue reliance on these forward-looking statements, which speak only as of the date of this release, and Kyntra Bio undertakes no obligation to update any forward-looking statement in this press release, except as required by law.
For Investor Inquiries:
David DeLucia, CFA
Senior Vice President and Chief Financial Officer