Tearsheet

Investment Highlights Why It Matters Detailed financial logic regarding cash flow yields vs trend-riding momentum.

0 Megatrend and thematic drivers
Megatrends include Precision Medicine, and Aging Population & Chronic Disease. Themes include Biopharmaceutical R&D, Targeted Therapies, Show more.
Weak multi-year price returns
2Y Excs Rtn is -50%, 3Y Excs Rtn is -90%
Not profitable at operating income level
Op Inc LTMOperating Income, Last Twelve Months is -45 Mil, Op Mgn LTMOperating Margin = Operating Income / Revenue Reflects profitability before taxes and before impact of capital structure (interest payments). is -704%
1   Weak revenue growth
Rev Chg LTMRevenue Change % Last Twelve Months (LTM) is -78%, Rev Chg 3Y AvgRevenue Change % averaged over trailing 3 years is -61%, Rev Chg QQuarterly Revenue Change % is -59%
2   Significant share based compensation
SBC/Rev LTMShare Based Compensation / Revenue (Sales), Last Twelve Months (LTM) is 102%
3   Not cash flow generative
CFO/Rev LTMCash Flow from Operations / Revenue (Sales), Last Twelve Months (LTM) is -74%, FCF/Rev LTMFree Cash Flow / Revenue (Sales), Last Twelve Months (LTM) is -75%
4   Key risks
KYNB key risks include [1] a history of regulatory rejection and late-stage trial failures for its key drug candidate, Show more.
0 Megatrend and thematic drivers
Megatrends include Precision Medicine, and Aging Population & Chronic Disease. Themes include Biopharmaceutical R&D, Targeted Therapies, Show more.
1 Weak multi-year price returns
2Y Excs Rtn is -50%, 3Y Excs Rtn is -90%
2 Not profitable at operating income level
Op Inc LTMOperating Income, Last Twelve Months is -45 Mil, Op Mgn LTMOperating Margin = Operating Income / Revenue Reflects profitability before taxes and before impact of capital structure (interest payments). is -704%
3 Weak revenue growth
Rev Chg LTMRevenue Change % Last Twelve Months (LTM) is -78%, Rev Chg 3Y AvgRevenue Change % averaged over trailing 3 years is -61%, Rev Chg QQuarterly Revenue Change % is -59%
4 Significant share based compensation
SBC/Rev LTMShare Based Compensation / Revenue (Sales), Last Twelve Months (LTM) is 102%
5 Not cash flow generative
CFO/Rev LTMCash Flow from Operations / Revenue (Sales), Last Twelve Months (LTM) is -74%, FCF/Rev LTMFree Cash Flow / Revenue (Sales), Last Twelve Months (LTM) is -75%
6 Key risks
KYNB key risks include [1] a history of regulatory rejection and late-stage trial failures for its key drug candidate, Show more.

Valuation, Metrics & Events

Price Chart

Why The Stock Moved

Qualitative Assessment

AI Analysis | Feedback

Kyntra Bio, Inc. (KYNB) stock has lost about 30% since it went public on 1/9/2026 because of the following key factors:

1. Persistent Investor Skepticism Due to Company's Legacy.

Kyntra Bio (KYNB) began trading under its new name and ticker on January 8, 2026, following its rebranding from FibroGen. This transition aimed to reflect a sharpened focus on oncology and rare disease assets. However, the company carried a historical burden from FibroGen's past, which included significant market value collapse due to late-stage trial failures, regulatory setbacks, and a data manipulation scandal, likely contributing to sustained investor caution despite the new identity.

2. Negative Market Reaction to Clinical Data.

On February 23, 2026, Kyntra Bio announced positive data from an investigator-sponsored Phase 1b/2 study of FG-3246 for metastatic castration-resistant prostate cancer, which was to be presented at ASCO GU 2026. Despite the positive framing, the company's stock experienced a notable decline of 9.57% on that day. This market response indicates that investors may have found the detailed results, such as a 21% composite response rate in the broader, biomarker-unselected patient cohort and concerns about tolerability, to be less compelling than initially anticipated or that expectations were higher.

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Stock Movement Drivers

Fundamental Drivers

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Market Drivers

11/30/2025 to 3/29/2026
ReturnCorrelation
KYNB  
Market (SPY)-5.3%46.1%
Sector (XLV)-8.7%22.0%

Fundamental Drivers

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Market Drivers

8/31/2025 to 3/29/2026
ReturnCorrelation
KYNB  
Market (SPY)0.6%46.1%
Sector (XLV)5.2%22.0%

Fundamental Drivers

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Market Drivers

2/28/2025 to 3/29/2026
ReturnCorrelation
KYNB  
Market (SPY)9.8%46.1%
Sector (XLV)-2.1%22.0%

Fundamental Drivers

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Market Drivers

2/28/2023 to 3/29/2026
ReturnCorrelation
KYNB  
Market (SPY)69.4%46.1%
Sector (XLV)18.4%22.0%

Return vs. Risk

Price Returns Compared

 202120222023202420252026Total [1]
Returns
KYNB Return------29%-29%
Peers Return-33%-38%-29%-55%-48%8%-93%
S&P 500 Return27%-19%24%23%16%-5%72%

Monthly Win Rates [3]
KYNB Win Rate-----0% 
Peers Win Rate31%44%44%36%50%53% 
S&P 500 Win Rate75%42%67%75%67%33% 

Max Drawdowns [4]
KYNB Max Drawdown------29% 
Peers Max Drawdown-40%-52%-49%-60%-61%-24% 
S&P 500 Max Drawdown-1%-25%-1%-2%-15%-5% 


[1] Cumulative total returns since the beginning of 2021
[2] Peers: VRTX, AKTS, ALPS, DCOY, DFTX.
[3] Win Rate = % of calendar months in which monthly returns were positive
[4] Max drawdown represents maximum peak-to-trough decline within a year
[5] 2026 data is for the year up to 3/27/2026 (YTD)

How Low Can It Go

KYNB has limited trading history. Below is the Health Care sector ETF (XLV) in its place.

Unique KeyEventXLVS&P 500
2022 Inflation Shock2022 Inflation Shock  
2022 Inflation Shock% Loss% Loss-16.1%-25.4%
2022 Inflation Shock% Gain to Breakeven% Gain to Breakeven19.1%34.1%
2022 Inflation ShockTime to BreakevenTime to Breakeven599 days464 days
2020 Covid Pandemic2020 Covid Pandemic  
2020 Covid Pandemic% Loss% Loss-28.8%-33.9%
2020 Covid Pandemic% Gain to Breakeven% Gain to Breakeven40.4%51.3%
2020 Covid PandemicTime to BreakevenTime to Breakeven116 days148 days
2018 Correction2018 Correction  
2018 Correction% Loss% Loss-15.8%-19.8%
2018 Correction% Gain to Breakeven% Gain to Breakeven18.8%24.7%
2018 CorrectionTime to BreakevenTime to Breakeven326 days120 days
2008 Global Financial Crisis2008 Global Financial Crisis  
2008 Global Financial Crisis% Loss% Loss-40.6%-56.8%
2008 Global Financial Crisis% Gain to Breakeven% Gain to Breakeven68.3%131.3%
2008 Global Financial CrisisTime to BreakevenTime to Breakeven1,100 days1,480 days

Compare to VRTX, AKTS, ALPS, DCOY, DFTX

In The Past

SPDR Select Sector Fund's stock fell -16.1% during the 2022 Inflation Shock from a high on 4/8/2022. A -16.1% loss requires a 19.1% gain to breakeven.

Preserve Wealth

Limiting losses and compounding gains is essential to preserving wealth.

Asset Allocation

Actively managed asset allocation strategies protect wealth. Learn more.

About Kyntra Bio, Inc. (KYNB)

FibroGen, Inc., a biopharmaceutical company, discovers, develops, and commercializes therapeutics to treat serious unmet medical needs. The company is developing Roxadustat, an oral small molecule inhibitor of hypoxia inducible factor prolyl hydroxylases, which has completed Phase III clinical development for the treatment of anemia in chronic kidney disease in the United States, Europe, China, and Japan; and in Phase II/III development in China for anemia associated with myelodysplastic syndromes. It is also developing Pamrevlumab, a human monoclonal antibody that inhibits the activity of connective tissue growth factor that is in Phase III clinical development for the treatment of idiopathic pulmonary fibrosis, pancreatic cancer, liver fibrosis, and diabetic kidney disease, as well as Phase III trial for the treatment of Duchenne muscular dystrophy. The company has collaboration agreements with Astellas Pharma Inc. and AstraZeneca AB. FibroGen, Inc. was incorporated in 1993 and is headquartered in San Francisco, California.

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Thane Wettig

Chief Executive Officer

Thane Wettig joined FibroGen, which later rebranded to Kyntra Bio, Inc., in June 2020 as Chief Commercial Officer and was appointed interim CEO in July 2023, before becoming the permanent Chief Executive Officer. Prior to joining FibroGen, he served as Chief Commercial Officer and Metabolic Franchise Head at Intarcia Therapeutics. Before 2018, Wettig was the Chief Marketing Officer for Eli Lilly's diabetes segment, where he played a significant role in the development and launch of several major diabetes medicines. He also contributed to the design and management of the successful diabetes alliance between Eli Lilly and Boehringer-Ingelheim. Under his leadership, Kyntra Bio completed the sale of FibroGen China to AstraZeneca, which Wettig described as a transformational event for the company.

David DeLucia

Senior Vice President and Chief Financial Officer

David DeLucia was appointed Chief Financial Officer of FibroGen (now Kyntra Bio, Inc.) on December 16, 2024. He joined the company in 2022 and previously served as Vice President, Head of Corporate Financial Planning and Analysis, Investor Relations, and Treasury. Before his tenure at FibroGen, DeLucia held various financial and corporate development roles at TherapeuticsMD. Earlier in his career, he worked as a buy-side investor at J.P. Morgan Asset Management, specializing in small and mid-cap healthcare companies. He holds the Chartered Financial Analyst (CFA) designation and dual degrees in Finance & Accounting and Economics from the University of Michigan Ross School of Business.

John Alden

General Counsel

John Alden serves as the General Counsel for Kyntra Bio, Inc.

Carol Gaddum

Vice President of Product Development

Carol Gaddum is the Vice President of Product Development at Kyntra Bio, Inc.

AI Analysis | Feedback

For Kyntra Bio, Inc. (symbol: KYNB), the key risks to the business are:

1. Clinical Trial and Regulatory Approval Risks

As a biopharmaceutical company, Kyntra Bio's success is heavily reliant on the successful development and regulatory approval of its drug candidates. The company is currently advancing FG-3246, an antibody-drug conjugate for metastatic castration-resistant prostate cancer, which is in Phase 2 development with interim results expected in the second half of 2026. Kyntra Bio is also pursuing the development of Roxadustat for anemia in lower-risk myelodysplastic syndromes (LR-MDS) in the U.S., having submitted a pivotal Phase 3 clinical trial protocol. The company, formerly FibroGen, Inc., has a history of late-stage trial failures and regulatory setbacks for Roxadustat in the U.S., including a rejection by the Food and Drug Administration (FDA) in 2021 due to safety concerns and a failed Phase 3 trial in 2023 for a broader myelodysplastic syndrome indication. Any further setbacks, trial failures, or adverse regulatory decisions for FG-3246 or Roxadustat would significantly jeopardize the company's future prospects and ability to bring products to market.

2. Financial Health and Funding Risk

Kyntra Bio faces significant financial challenges, having reported substantial net losses from continuing operations, including $58.2 million for the full year 2025. The company's revenue from continuing operations has also declined significantly, from $29.6 million in 2024 to $6.4 million in 2025. Financial health assessments categorize the company as having "poor financial strength" with a distressed Altman Z-Score, which implies a high risk of bankruptcy. While Kyntra Bio anticipates its cash, cash equivalents, and investments of $109.4 million as of December 31, 2025, to fund operations into 2028, the substantial capital required for ongoing and future clinical trials, particularly the planned Phase 3 for Roxadustat, suggests a continued high reliance on securing additional funding in the future.

3. Competition and Market Acceptance Risk

The biopharmaceutical industry is highly competitive. For Roxadustat, Kyntra Bio faces an already established competitive landscape. A rival, Akebia Therapeutics, received FDA approval for a competing anemia drug in March 2024, thereby capturing the U.S. market for anemia in dialysis patients with chronic kidney disease. Although Kyntra Bio is now targeting a narrower indication with Roxadustat in LR-MDS in the U.S., the presence of approved alternatives poses a challenge. Similarly, FG-3246, while a potential first-in-class antibody-drug conjugate, is entering the highly competitive oncology market, particularly for metastatic castration-resistant prostate cancer, where numerous existing and emerging treatments are available. Even if Kyntra Bio's drug candidates receive regulatory approval, securing significant market acceptance and adoption by physicians and patients is not guaranteed.

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For Kyntra Bio, Inc. (KYNB), the addressable market for its main product candidate, FG-3246, is estimated to be over $5 billion annually in the U.S. alone. FG-3246 is an antibody-drug conjugate (ADC) currently in Phase 2 development for metastatic castration-resistant prostate cancer (mCRPC).

Kyntra Bio also has Roxadustat, which is approved in Europe, Japan, China, and other countries for the treatment of anemia in chronic kidney disease (CKD) patients on and not on dialysis. The company is also evaluating a Phase 3 trial for Roxadustat in the U.S. for anemia associated with lower-risk myelodysplastic syndromes (LR-MDS). However, the addressable market size for Roxadustat for these indications and regions is not explicitly quantified in the provided information.

AI Analysis | Feedback

Kyntra Bio, Inc. (KYNB), formerly known as FibroGen, Inc., officially rebranded and began trading under its new symbol on January 8, 2026. The company has undergone a strategic transformation to focus on oncology and rare disease therapies, which will be key drivers of its future revenue growth.

Here are 3-5 expected drivers of future revenue growth for Kyntra Bio, Inc. over the next 2-3 years:

  1. Advancement and Potential Commercialization of Roxadustat for Anemia in Myelodysplastic Syndromes (MDS): Roxadustat, an oral small molecule inhibitor, is considered Phase III-ready for the treatment of anemia associated with lower-risk myelodysplastic syndromes. The company received Orphan Drug Designation from the FDA for this indication in December 2025, which could provide seven years of U.S. regulatory exclusivity upon approval. A potential Phase III trial is expected to commence in the second half of 2026.
  2. Clinical Development and Potential Market Entry of FG-3246 in Prostate Cancer: Kyntra Bio is prioritizing the development of FG-3246, a CD46-targeting antibody drug conjugate, along with its companion PET imaging agent FG-3180. The company has initiated a Phase 2 monotherapy trial for FG-3246 in metastatic castration-resistant prostate cancer (mCRPC), with interim results anticipated in the latter half of 2026. Positive data from an investigator-sponsored Phase 1b/2 study in combination with enzalutamide have already shown promising clinical activity in a targeted patient population.
  3. Leveraging Existing Roxadustat Approvals for Chronic Kidney Disease (CKD) Anemia in Approved Territories: While the company has refocused its strategy, Roxadustat is already approved in Europe, Japan, and other international markets for the treatment of anemia in chronic kidney disease patients. Continued sales and market penetration in these established regions will serve as a foundational revenue stream, contributing to the company's financial stability as new pipeline assets advance.
  4. Pipeline Expansion and Strategic Partnerships in Oncology and Rare Diseases: Kyntra Bio's strategic shift explicitly targets oncology and rare disease therapeutics. Beyond FG-3246, the pipeline includes anti-GAL-9 antibodies (FG-3165 and FG-3175) targeting solid tumors, indicating a broader commitment to developing novel therapies in these high-value areas. Successful advancement of these and future pipeline assets, potentially through new collaborations or expanded existing agreements (such as with Astellas Pharma Inc. and AstraZeneca AB for certain indications), could drive significant long-term revenue growth.

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Share Issuance

  • Stock options were awarded to Kyntra Bio's CEO and CFO in February 2026, with the CEO receiving 60,000 options and the CFO receiving 26,000 options, both at an $8.50 strike price.

Inbound Investments

  • In August 2025, the company completed the sale of its Chinese subsidiary, FibroGen China, to AstraZeneca for approximately $220 million. This transaction was transformative, extending the company's cash runway into 2028 and allowing for the repayment of a term loan.

Outbound Investments

  • FibroGen licensed FG-3246 from Fortis Therapeutics in May 2023 as part of its strategy to rebuild its pipeline after several clinical failures.

Capital Expenditures

  • In October 2024, the company paid $10 million to terminate its lease for its longtime Mission Bay headquarters, citing a reduced need for office space.
  • Research and development (R&D) expenses for the third quarter of 2025 were $1.2 million, a 94% decrease compared to $20 million in the third quarter of 2024, reflecting significant cost reductions and portfolio prioritization.
  • Total operating costs and expenses, including stock-based compensation, were guided to be between $50 million and $60 million for the full year 2025, representing a 70% reduction from the full year 2024.

Trade Ideas

Select ideas related to KYNB.

Unique KeyDateTickerCompanyCategoryTrade Strategy6M Fwd Rtn12M Fwd Rtn12M Max DD
QDEL_2282026_Insider_Buying_45D_2Buy_200K02282026QDELQuidelOrthoInsiderInsider Buys 45DStrong Insider Buying
Companies with multiple insider buys in the last 45 days
0.0%0.0%0.0%
CHE_2272026_Dip_Buyer_FCFYield02272026CHEChemedDip BuyDB | FCFY OPMDip Buy with High FCF Yield and High Margin
Buying dips for companies with high FCF yield and meaningfully high operating margin
0.0%0.0%0.0%
LLY_2272026_Monopoly_xInd_xCD_Getting_Cheaper02272026LLYEli LillyMonopolyMY | Getting CheaperMonopoly-Like with P/S Decline
Large cap with monopoly-like margins or cash flow generation and getting cheaper based on P/S multiple
0.0%0.0%0.0%
HAE_2202026_Dip_Buyer_FCFYield02202026HAEHaemoneticsDip BuyDB | FCFY OPMDip Buy with High FCF Yield and High Margin
Buying dips for companies with high FCF yield and meaningfully high operating margin
3.5%3.5%0.0%
IQV_2132026_Dip_Buyer_ValueBuy02132026IQVIQVIADip BuyDB | P/E OPMDip Buy with Low PE and High Margin
Buying dips for companies with tame PE and meaningfully high operating margin
7.1%7.1%-3.0%

Recent Active Movers

Peer Comparisons

Peers to compare with:

Financials

KYNBVRTXAKTSALPSDCOYDFTXMedian
NameKyntra B.Vertex P.Aktis On.ALPS Decoy Th.Definium. 
Mkt Price6.59433.0715.191.006.3017.8810.89
Mkt Cap-109.8--0.0-54.9
Rev LTM612,001--003
Op Inc LTM-454,554---5-166-25
FCF LTM-53,194---4-132-5
FCF 3Y Avg-1541,832---9-92-50
CFO LTM-53,631---4-132-5
CFO 3Y Avg-1532,225---9-92-50

Growth & Margins

KYNBVRTXAKTSALPSDCOYDFTXMedian
NameKyntra B.Vertex P.Aktis On.ALPS Decoy Th.Definium. 
Rev Chg LTM-78.3%8.9%-----34.7%
Rev Chg 3Y Avg-60.6%10.4%-----25.1%
Rev Chg Q-59.3%9.5%-----24.9%
QoQ Delta Rev Chg LTM-22.4%2.4%-----10.0%
Op Mgn LTM-704.1%37.9%-----333.1%
Op Mgn 3Y Avg-602.9%24.7%-----289.1%
QoQ Delta Op Mgn LTM-245.5%38.7%-----103.4%
CFO/Rev LTM-74.1%30.3%-----21.9%
CFO/Rev 3Y Avg-404.4%20.5%-----191.9%
FCF/Rev LTM-74.7%26.6%-----24.1%
FCF/Rev 3Y Avg-406.7%17.0%-----194.8%

Valuation

KYNBVRTXAKTSALPSDCOYDFTXMedian
NameKyntra B.Vertex P.Aktis On.ALPS Decoy Th.Definium. 
Mkt Cap-109.8--0.0-54.9
P/S-9.2----9.2
P/EBIT-23.6---0.0-11.8
P/E-27.8---0.1-13.9
P/CFO-30.2---0.1-15.1
Total Yield-3.6%---1,979.5%--987.9%
Dividend Yield-0.0%--0.0%-0.0%
FCF Yield 3Y Avg-1.7%---9,205.1%--4,601.7%
D/E-0.0--0.0-0.0
Net D/E--0.0---19.0--9.5

Returns

KYNBVRTXAKTSALPSDCOYDFTXMedian
NameKyntra B.Vertex P.Aktis On.ALPS Decoy Th.Definium. 
1M Rtn-4.9%-12.8%-24.5%4.2%-22.9%2.5%-8.9%
3M Rtn-28.5%-6.4%∞%1.0%-20.1%18.8%-6.4%
6M Rtn-28.5%12.3%∞%5.3%-86.2%18.8%5.3%
12M Rtn-28.5%-12.1%253,066.7%5.3%-95.9%18.8%-3.4%
3Y Rtn-28.5%38.7%408.0%5.3%-99.8%18.8%12.1%
1M Excs Rtn2.4%-2.0%-14.8%8.8%-15.3%11.2%0.2%
3M Excs Rtn-20.4%1.7%∞%15.0%-9.3%26.9%1.7%
6M Excs Rtn-25.0%17.0%∞%8.9%-83.1%22.4%8.9%
12M Excs Rtn-40.0%-24.9%337,444.1%-6.2%-107.4%7.3%-15.6%
3Y Excs Rtn-90.3%-16.4%376.9%-56.5%-161.6%-43.0%-49.7%

Comparison Analyses

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Financials

Segment Financials

Revenue by Segment
$ Mil20252024202320222021
Development and commercialization of novel therapeutics to treat serious unmet medical needs3047   
Development and other revenue  247081
Drug product revenue, net  1119
License revenue  2311614
Product revenue, net  834872
Total3047141235176


Short Interest

Short Interest: As Of Date3132026
Short Interest: Shares Quantity0.1 Mil
Short Interest: % Change Since 22820261.1%
Average Daily Volume0.0 Mil
Days-to-Cover Short Interest4.0 days
Basic Shares Quantity4.0 Mil
Short % of Basic Shares2.8%

SEC Filings

Expand for More
Report DateFiling DateFiling
12/31/202503/16/202610-K
09/30/202511/10/202510-Q
06/30/202508/11/202510-Q
03/31/202505/12/202510-Q
12/31/202403/17/202510-K
09/30/202411/12/202410-Q
06/30/202408/06/202410-Q
03/31/202405/06/202410-Q
12/31/202302/26/202410-K
09/30/202311/06/202310-Q
06/30/202308/07/202310-Q
03/31/202305/08/202310-Q
12/31/202202/27/202310-K
09/30/202211/07/202210-Q
06/30/202208/08/202210-Q
03/31/202205/09/202210-Q