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NKGen Biotech

Biotech & Life Sciences · Santa Ana, United States · Founded 2017 · Public via SPAC 2023

Maximizing immune integrity through the development of unique natural killer (NK) cell therapies MoreLess

NKGen Biotech is a clinical-stage biotechnology company that focuses on developing and commercializing cell therapies to address neurodegenerative and oncological diseases. The company was founded in 2017 by Sangwoo Park and is headquartered in Santa Ana, California. Its history traces back to 2002 with the founding of its parent company, ATGen, which later became NKMax. In April 2021, NKMax America rebranded as NKGen Biotech to better align with its core focus. A significant milestone occurred in 2023 when NKGen Biotech became a publicly traded company on Nasdaq (NKGN) through a merger with Graf Acquisition Corp. IV.

The company's business model is centered on the research, clinical development, and eventual commercialization of its proprietary natural killer (NK) cell therapies. The primary clients are patients with serious or life-threatening conditions, particularly those with neurodegenerative diseases like Alzheimer's and Parkinson's, and various forms of cancer who have not responded to conventional treatments. Revenue generation is anticipated through the successful development and regulatory approval of its therapeutic products. NKGen operates a 25,000-square-foot cGMP-compliant manufacturing facility in Santa Ana, which supports its clinical trials and future commercial production.

NKGen's core technology is its proprietary SuperNK™ (SNK) platform, which is designed to expand and activate a patient's own NK cells (autologous) or donor NK cells (allogeneic) to enhance their ability to target and destroy diseased cells. The lead product candidate, SNK01 (troculeucel), is an autologous therapy derived from a patient's own blood. These cells are enhanced in a lab before being re-infused. A key feature of SNK01 is that it is not genetically modified, which may reduce the risk of certain side effects compared to other cell therapies like CAR-T. SNK01 is being investigated in clinical trials for its potential to cross the blood-brain barrier to reduce neuroinflammation and protein aggregates associated with Alzheimer's disease. Early phase 1 trial results have shown the therapy to be well-tolerated and demonstrated stable or improved outcomes in a high percentage of subjects.

In addition to SNK01 for neurodegenerative diseases, NKGen is developing SNK02, an allogeneic 'off-the-shelf' therapy derived from healthy donors for treating solid tumors. This product is notable because it is being studied without the need for lymphodepletion, a harsh pre-treatment regimen typically required for cell therapies. The company is also exploring combination therapies, pairing its NK cells with other treatments like checkpoint inhibitors. Through its Expanded Access Program (EAP), NKGen provides its investigational therapy, troculeucel, to a limited number of patients with neurodegenerative diseases who cannot participate in clinical trials.

The company is led by Chairman and CEO Paul Y. Song, M.D., who was appointed CEO in January 2023 and took on the Chairman role in March 2024. Dr. Song is a board-certified radiation oncologist with extensive experience in biopharma and clinical development, having previously co-founded FuseBio Therapeutics. His leadership marked a strategic shift to increase focus on neurodegenerative diseases. The founder, Sangwoo Park, stepped down as chairperson in March 2024 but continues to serve as a director on the board.

Keywords: NK cell therapy, neurodegenerative diseases, oncology, autologous therapy, allogeneic therapy, clinical-stage biotechnology, Alzheimer's treatment, Parkinson's treatment, solid tumors, SNK01, troculeucel, SNK02, cell therapy manufacturing, immunotherapy, natural killer cells, clinical trials, cGMP facility, expanded access program, immuno-oncology, cell-based therapeutics

Valuation $39M
Total funding $10–50M

Company overview

NKGen Biotech company information

The essential company record, classifications and operating signals in one place.

Status
Operational
Founded
2017
Headquarters
Santa Ana, United States
Employees
53
Open positions
None listed
Dealroom signal
33.4
Investment activity
1 companies · latest Sep 2025
Capital deployed
Preferred round
ACQUISITION
client focusb2bsub industryPharmaceuticalsub industryBioTechnologybusiness modelManufacturingindustryHealthsectorBiotechnologysectorBiotech and PharmasectorSPAC TargetsectorSPAC IPO AnnouncedsectorHard TechsectorDT and LSsectorscience-based

Valuation & funding

NKGen Biotech funding history

Company financing events and reported valuations.

Deal typeDateAmountValuationInvestorsSource
POST IPO CONVERTIBLEOther financing May 2026 $607K Undisclosed
POST IPO DEBTDebt Feb 2026 $343K Undisclosed
POST IPO DEBTDebt Jan 2026 $26M Undisclosed
POST IPO EQUITYOther financing Sep 2025 $2.5M Undisclosed
POST IPO EQUITYOther financing Jul 2025 $2M Undisclosed
POST IPO EQUITYOther financing May 2025 Paul Y Song
POST IPO CONVERTIBLEOther financing Apr 2024 Undisclosed
SPAC IPOExit Mar 2023 Graf Acquisition Corp. IV
SEEDEquity / VC Dec 2019 Undisclosed
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Financials

Revenue, earnings and profit over time

Reported history and available estimates. Estimated years are marked “E”; sparse fields are left blank rather than inferred.

YearRevenueGrowthEBITDAMarginProfitMarginR&D
2026 $0 −$29M −$83M $16M
2025 $0 −$29M −$83M $16M
2024 $0 −$29M −$83M $16M
2023 $0 -100% −$29M $16M
2022 $77K -81.9% −$23M -29598.7%
2021 $426K −$21M -4859.4%
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Growth signals

NKGen Biotech website traffic

Latest recorded traffic for NKGen Biotech is 2.7K monthly website visits, down 6.9% over the last three months. NKGen Biotech's team declined 1.9% over the past year.

Latest monthly visits2.7K 3-month web change-6.9% 1-year team growth-1.9%
Monthly website visits45 observations · Oct 2022–Jul 2026
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Hiring

Open positions at NKGen Biotech

Current openings linked to this company in Dealroom.

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Comparisons

NKGen Biotech compared with similar companies

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Capital deployed

NKGen Biotech investments and acquisitions

Recent portfolio relationships for companies that also act as investors or acquirers.

Talent graph

NKGen Biotech's talent

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Team profiled 6 named & role-tagged
Founders Hidden — book a demo/100 quality score
Key operators 2 quality Hidden — book a demo/100
Potential founders Hidden — book a demo likely future founders
Startup mafia Hidden — book a demo alumni-founded startups
Talent movements Hidden — book a demo in · Hidden — book a demo out past 12 months

Source: Dealroom Talent Intelligence.

Investors

2 investors on NKGen Biotech's cap table

Sourced from Dealroom's funding and investor records.

Series B+ 2 investors entered at this stage
Graf Acquisition Corp. IV
Paul Y Song

Global footprint

Where NKGen Biotech has talent and traffic

Workforce by country
3 countries with
team presence
🇺🇸 United States91.4%
🇨🇦 Canada5.7%
🇰🇷 South Korea2.9%
3 countries shown

In the news

Latest news about NKGen Biotech

Recent press, funding announcements, and product moves mentioning NKGen Biotech — open to read from the original sources.

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Market sentiment

What the market is saying about NKGen Biotech

An AI-synthesized read of the highest-engagement posts about NKGen Biotech on X over the past 7 days. We rank by likes & retweets, ignore corporate channels, and surface the themes that broke out from real people.

Reading the room on X — pulling top posts and synthesizing themes…

Source: X recent search ranked by engagement (likes + retweets) · Synthesis by Claude · Cached for 1 hour

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