• Live Feeds
    • Press Releases
    • Insider Trading
    • FDA Approvals
    • Analyst Ratings
    • Insider Trading
    • SEC filings
    • Market insights
  • Analyst Ratings
  • Alerts
  • Subscriptions
  • AI Executive AssistantNEW
  • Settings
  • RSS Feeds
Quantisnow Logo
  • Live Feeds
    • Press Releases
    • Insider Trading
    • FDA Approvals
    • Analyst Ratings
    • Insider Trading
    • SEC filings
    • Market insights
  • Analyst Ratings
  • Alerts
  • Subscriptions
  • AI Executive AssistantNEW
  • Settings
  • RSS Feeds
PublishGo to AppAI Helper
    Quantisnow Logo

    © 2025 quantisnow.com
    Democratizing insights since 2022

    Services
    Live news feedsRSS FeedsAlertsPublish with Us
    Company
    AboutQuantisnow PlusContactJobsAI employees for your businessNEW
    Legal
    Terms of usePrivacy policyCookie policy

    SEC Form SCHEDULE 13D filed by NKGen Biotech Inc.

    5/12/25 4:15:04 PM ET
    $NKGN
    Biotechnology: Biological Products (No Diagnostic Substances)
    Health Care
    Get the next $NKGN alert in real time by email



    SECURITIES AND EXCHANGE COMMISSION
    Washington, D.C. 20549


    SCHEDULE 13D

    Under the Securities Exchange Act of 1934

    NKGen Biotech, Inc.

    (Name of Issuer)


    Common Stock

    (Title of Class of Securities)


    65488A101

    (CUSIP Number)


    Paul Y. Song
    3001 Daimler Street,
    Santa Ana, CA, 92705
    949-396-6830

    (Name, Address and Telephone Number of Person Authorized to Receive Notices and Communications)
    05/05/2025

    (Date of Event Which Requires Filing of This Statement)


    If the filing person has previously filed a statement on Schedule 13G to report the acquisition that is the subject of this Schedule 13D, and is filing this schedule because of §§ 240.13d-1(e), 240.13d-1(f) or 240.13d-1(g), check the following box. Checkbox not checked

    The information required on the remainder of this cover page shall not be deemed to be “filed” for the purpose of Section 18 of the Securities Exchange Act of 1934 (“Act”) or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act (however, see the Notes).






    SCHEDULE 13D

    CUSIP No.
    65488A101


    1 Name of reporting person

    Paul Y. Song
    2Check the appropriate box if a member of a Group (See Instructions)

    Checkbox not checked  (a)
    Checkbox not checked  (b)
    3SEC use only
    4 Source of funds (See Instructions)

    PF
    5 Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)

    Checkbox not checked
    6Citizenship or place of organization

    UNITED STATES
    Number of Shares Beneficially Owned by Each Reporting Person With:
    7Sole Voting Power

    63,738,042.00
    8Shared Voting Power

    0.00
    9Sole Dispositive Power

    63,738,042.00
    10Shared Dispositive Power

    0.00
    11Aggregate amount beneficially owned by each reporting person

    63,738,042.00
    12Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)

    Checkbox not checked
    13Percent of class represented by amount in Row (11)

    54.3 %
    14Type of Reporting Person (See Instructions)

    IN

    Comment for Type of Reporting Person:
    (1) Consists of (a) 21,020,030 shares of common stock of the Issuer, (b) 41,699,449 shares of common stock of the Issuer that could currently be acquired upon exercise of warrants, and (c) 1,018,563 shares of common stock of the Issuer that could currently be acquired upon exercise of warrants.


    SCHEDULE 13D

    Item 1.Security and Issuer
    (a)Title of Class of Securities:

    Common Stock
    (b)Name of Issuer:

    NKGen Biotech, Inc.
    (c)Address of Issuer's Principal Executive Offices:

    3001 Daimler Street, Santa Ana, CALIFORNIA , 92705.
    Item 2.Identity and Background
    (a)
    Paul Y. Song
    (b)
    c/o NKGen Biotech, Inc., 3001 Daimler Street, Santa Ana, California 92705.
    (c)
    President / CEO of NKGen Biotech, Inc., 3001 Daimler Street, Santa Ana, California 92705
    (d)
    No
    (e)
    No
    (f)
    United States of America
    Item 3.Source and Amount of Funds or Other Consideration
     
    The purchase of 20,849,725 shares of common stock of NKGen Biotech, Inc. and the accompanying issuance of a warrant to purchase 41,699,449 additional shares (the "Warrant") were made pursuant to a private placement as detailed in the Stock Purchase Agreement dated May 5, 2025. The total purchase price for the shares was $2,650,000.00, paid in cash from the Purchaser to the Company; no part of the purchase price was represented by borrowed funds or other consideration obtained for the purpose of acquiring, holding, trading, or voting the securities, and there were no loans or financing arrangements involved in the transaction. The Warrant was issued as additional consideration in connection with the share purchase and entitles the Purchaser to acquire further shares at an exercise price of $0.1271 per share. The transaction was a direct private placement between Reporting Person and NKGen Biotech, Inc., with no other parties providing funds or consideration.
    Item 4.Purpose of Transaction
     
    The securities were acquired for investment purposes and to align with the strategic direction of the Company. The Reporting Person, as President and CEO of NKGen Biotech, Inc., currently exercises influence over management, operations, and corporate policy. Except as described herein, the Reporting Person does not currently have any plans or proposals that relate to or would result in any of the actions enumerated in this Item 4, although the Reporting Person reserves the right to formulate such plans or proposals in the future.
    Item 5.Interest in Securities of the Issuer
    (a)
    63,738,042 (54.3%)
    (b)
    63,738,042
    (c)
    N/A
    (d)
    N/A
    (e)
    N/A
    Item 6.Contracts, Arrangements, Understandings or Relationships With Respect to Securities of the Issuer
     
    Except for the Stock Purchase Agreement and Warrant, there are no contracts, arrangements, understandings or relationships among the Reporting Person, or between the Reporting Person and any other person, with respect to the securities of the Issuer.
    Item 7.Material to be Filed as Exhibits.
     
    99.1 Stock Purchase Agreement (incorporated by reference to Exhibit 10.1 to the Issuer's Current Report on Form 8-K filed with the Securities and Exchange Commission on May 8, 2025) 99.2 Common Stock Purchase Warrant (incorporated by reference to Exhibit 4.1 to the Issuer's Current Report on Form 8-K filed with the Securities and Exchange Commission on May 8, 2025)

        SIGNATURE 
     
    After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

     
    Paul Y. Song
     
    Signature:/s/ Paul Y. Song
    Name/Title:Paul Y. Song, Chief Executive Officer
    Date:05/12/2025
    Get the next $NKGN alert in real time by email

    Crush Q3 2025 with the Best AI Executive Assistant

    Stay ahead of the competition with Tailforce.ai - your AI-powered business intelligence partner.

    AI-Powered Inbox
    Context-aware email replies
    Strategic Decision Support
    Get Started with Tailforce.ai

    Recent Analyst Ratings for
    $NKGN

    DatePrice TargetRatingAnalyst
    More analyst ratings

    $NKGN
    Press Releases

    Fastest customizable press release news feed in the world

    See more
    • NKGen Biotech to Present at the Alzheimer's Association International Conference 2025

      SANTA ANA, Calif., July 22, 2025 (GLOBE NEWSWIRE) -- NKGen Biotech, Inc. (OTC:NKGN) ("NKGen" or the "Company"), a clinical-stage biotechnology company focused on the development and commercialization of innovative autologous and allogeneic natural killer ("NK") cell therapeutics, today announced that it will present on the mechanism of action for troculeucel, enhanced non-genetically modified NK cell therapy, in Alzheimer's disease during a poster presentation at the upcoming Alzheimer's Association International Conference 2025 ("AAIC 2025") to be held in Toronto, Canada and online from July 27-31, 2025. Presentation details are as follows: Poster Title:Mechanism of Action of Troculeu

      7/22/25 8:05:00 AM ET
      $NKGN
      Biotechnology: Biological Products (No Diagnostic Substances)
      Health Care
    • NKGen Receives FDA Expanded Access Protocol Authorization for Landmark Treatment of Several Neurodegenerative Diseases

      Troculeucel, a cryopreserved, autologous enhanced natural killer cell therapy, has demonstrated preliminary clinical benefit without any drug-related adverse events in two Phase I clinical trials in Alzheimer's Disease.Company receives expanded access protocol authorization from the U.S. Food and Drug Administration (FDA) for troculeucel granted to treat patients with known diagnoses of multiple neurodegenerative diseases. IND approval allows for up to 20 patients to be enrolled; first patient enrollment is anticipated in Q3 2025. SANTA ANA, Calif., July 21, 2025 (GLOBE NEWSWIRE) -- NKGen Biotech, Inc. (OTC:NKGN) ("NKGen" or the "Company"), a clinical-stage biotechnology company foc

      7/21/25 8:00:00 AM ET
      $NKGN
      Biotechnology: Biological Products (No Diagnostic Substances)
      Health Care
    • NKGen Biotech and HekaBio Enter Strategic Partnership to Bring Novel NK Cell Therapy to Japan

      In connection with HekaBio's recently announced strategic investment in NKGen, the partnership will expedite the regulatory, manufacturing, and commercial development of NKGen's autologous NK cell therapy, troculeucel, in Japan. Under Japan's Regenerative Medicine guidelines, cell therapies enjoy a regulatory environment with multiple paths for expedited commercialization. Troculeucel is well positioned to be the first-in-class forerunner for the treatment of several intractable neurodegenerative diseases. SANTA ANA, Calif., July 17, 2025 (GLOBE NEWSWIRE) -- NKGen Biotech, Inc. (OTC:NKGN) ("NKGen" or the "Company"), a clinical-stage biotechnology company focused on the development and

      7/17/25 4:05:00 PM ET
      $NKGN
      Biotechnology: Biological Products (No Diagnostic Substances)
      Health Care

    $NKGN
    Insider Purchases

    Insider purchases reveal critical bullish sentiment about the company from key stakeholders. See them live in this feed.

    See more
    • Large owner Cfic-2015 Nv Family Investments, Llc bought $2,500,000 worth of shares (19,669,552 units at $0.13), increasing direct ownership by 944% to 21,752,885 units (SEC Form 4)

      4 - NKGen Biotech, Inc. (0001845459) (Issuer)

      6/2/25 12:11:05 PM ET
      $NKGN
      Biotechnology: Biological Products (No Diagnostic Substances)
      Health Care
    • Chief Executive Officer Song Paul Y. bought $2,650,000 worth of shares (20,849,725 units at $0.13), increasing direct ownership by 12,184% to 21,020,846 units (SEC Form 4)

      4 - NKGen Biotech, Inc. (0001845459) (Issuer)

      5/7/25 4:05:15 PM ET
      $NKGN
      Biotechnology: Biological Products (No Diagnostic Substances)
      Health Care

    $NKGN
    Insider Trading

    Insider transactions reveal critical sentiment about the company from key stakeholders. See them live in this feed.

    See more
    • Large owner Cfic-2015 Nv Family Investments, Llc bought $2,500,000 worth of shares (19,669,552 units at $0.13), increasing direct ownership by 944% to 21,752,885 units (SEC Form 4)

      4 - NKGen Biotech, Inc. (0001845459) (Issuer)

      6/2/25 12:11:05 PM ET
      $NKGN
      Biotechnology: Biological Products (No Diagnostic Substances)
      Health Care
    • Chief Executive Officer Song Paul Y. bought $2,650,000 worth of shares (20,849,725 units at $0.13), increasing direct ownership by 12,184% to 21,020,846 units (SEC Form 4)

      4 - NKGen Biotech, Inc. (0001845459) (Issuer)

      5/7/25 4:05:15 PM ET
      $NKGN
      Biotechnology: Biological Products (No Diagnostic Substances)
      Health Care
    • Large owner Graf Acquisition Partners Iv Llc disposed of 63,634 shares (SEC Form 4)

      4 - NKGen Biotech, Inc. (0001845459) (Issuer)

      12/26/24 7:20:39 PM ET
      $NKGN
      Biotechnology: Biological Products (No Diagnostic Substances)
      Health Care

    $NKGN
    SEC Filings

    See more
    • NKGen Biotech Inc. filed SEC Form 8-K: Entry into a Material Definitive Agreement, Regulation FD Disclosure, Financial Statements and Exhibits

      8-K - NKGen Biotech, Inc. (0001845459) (Filer)

      7/17/25 4:33:25 PM ET
      $NKGN
      Biotechnology: Biological Products (No Diagnostic Substances)
      Health Care
    • SEC Form 25-NSE filed by NKGen Biotech Inc.

      25-NSE - NKGen Biotech, Inc. (0001845459) (Subject)

      7/17/25 1:25:20 PM ET
      $NKGN
      Biotechnology: Biological Products (No Diagnostic Substances)
      Health Care
    • NKGen Biotech Inc. filed SEC Form 8-K: Entry into a Material Definitive Agreement, Unregistered Sales of Equity Securities, Regulation FD Disclosure, Other Events, Financial Statements and Exhibits

      8-K - NKGen Biotech, Inc. (0001845459) (Filer)

      7/16/25 5:25:42 PM ET
      $NKGN
      Biotechnology: Biological Products (No Diagnostic Substances)
      Health Care

    $NKGN
    Leadership Updates

    Live Leadership Updates

    See more
    • NKGen Appoints Dr. Anita Fletcher as National Principal Investigator for Phase 2a Troculeucel Trial Evaluating Moderate Alzheimer's Disease with AdventHealth Orlando as First East Coast Site

      SANTA ANA, Calif., Feb. 19, 2025 (GLOBE NEWSWIRE) -- NKGen Biotech, Inc. (NASDAQ:NKGN) ("NKGen" or the "Company"), a clinical-stage biotechnology company focused on the development and commercialization of innovative autologous and allogeneic natural killer ("NK") cell therapeutics, today announced that Anita Fletcher, M.D. has been appointed as the National Principal Investigator ("PI") for its Phase 2a clinical trial of troculeucel, expanded enhanced autologous NK cell therapy, for the treatment of moderate Alzheimer's disease (NCT06189963). In addition to Dr. Fletcher's appointment as National PI, NKGen is pleased to announce AdventHealth Research Institute, Neuroscience Research in Orl

      2/19/25 8:00:00 AM ET
      $NKGN
      Biotechnology: Biological Products (No Diagnostic Substances)
      Health Care
    • NKGen Biotech Appoints Dr. Marco Gottardis to its Board of Directors

      SANTA ANA, Calif., July 15, 2024 (GLOBE NEWSWIRE) -- NKGen Biotech, Inc. (NASDAQ:NKGN) ("NKGen" or the "Company"), a clinical-stage biotechnology company focused on the development and commercialization of innovative autologous, allogeneic and CAR-NK natural killer ("NK") cell therapeutics, today announced the appointment of Dr. Marco Gottardis as a director and member of the Company's Audit Committee, Compensation Committee and Nominating and Corporate Governance Committee, effective July 11, 2024. Dr. Gottardis is the owner of, and has served as a consultant at, Gottardis Biotech LLC, a biopharmaceuticals and research and development consultancy firm, since February 2023. Dr. Gottardi

      7/15/24 8:05:00 AM ET
      $JNJ
      $NKGN
      Biotechnology: Pharmaceutical Preparations
      Health Care
      Biotechnology: Biological Products (No Diagnostic Substances)

    $NKGN
    Financials

    Live finance-specific insights

    See more
    • NKGen Biotech, Inc. Reports Third Quarter 2023 Financial Results and Business Highlights

      – SNK01 Phase I autologous clinical program demonstrated improvement in neuroinflammation and cognitive function in patients with Alzheimer's Disease, expect to initiate Phase I/IIa by year end – SNK02 Phase I allogeneic clinical program continues to progress; anticipated preliminary solid tumor data readout and IND filing for Parkinson's Disease in 1Q24 SANTA ANA, Calif., Nov. 14, 2023 (GLOBE NEWSWIRE) -- NKGen Biotech Inc. (NASDAQ:NKGN) (NKGen or the Company), a clinical-stage biotechnology company focused on the development and commercialization of innovative autologous, allogeneic, and CAR-NK natural killer (NK) cell therapeutics, today announced its financial results for the

      11/14/23 4:48:03 PM ET
      $NKGN
      Biotechnology: Biological Products (No Diagnostic Substances)
      Health Care

    $NKGN
    Large Ownership Changes

    This live feed shows all institutional transactions in real time.

    See more
    • SEC Form SC 13G filed by NKGen Biotech Inc.

      SC 13G - NKGen Biotech, Inc. (0001845459) (Subject)

      8/22/24 5:22:55 PM ET
      $NKGN
      Biotechnology: Biological Products (No Diagnostic Substances)
      Health Care
    • SEC Form SC 13G/A filed by NKGen Biotech Inc. (Amendment)

      SC 13G/A - NKGen Biotech, Inc. (0001845459) (Subject)

      5/10/24 2:42:14 PM ET
      $NKGN
      Biotechnology: Biological Products (No Diagnostic Substances)
      Health Care