• Live Feeds
    • Press Releases
    • Insider Trading
    • FDA Approvals
    • Analyst Ratings
    • Insider Trading
    • SEC filings
    • Market insights
  • Analyst Ratings
  • Alerts
  • Subscriptions
  • 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
  • Settings
  • RSS Feeds
PublishGo to App
    Quantisnow Logo

    © 2026 quantisnow.com
    Democratizing insights since 2022

    Services
    Live news feedsRSS FeedsAlertsPublish with Us
    Company
    AboutQuantisnow PlusContactJobsAI superconnector for talent & startupsNEWLLM Arena
    Legal
    Terms of usePrivacy policyCookie policy

    SEC Form 3 filed by new insider Marino Glenn P

    7/2/25 4:15:03 PM ET
    $SBXD
    Get the next $SBXD alert in real time by email
    SEC FORM 3 SEC Form 3
    FORM 3 UNITED STATES SECURITIES AND EXCHANGE COMMISSION
    Washington, D.C. 20549

    INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

    Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
    or Section 30(h) of the Investment Company Act of 1940
    OMB APPROVAL
    OMB Number: 3235-0104
    Estimated average burden
    hours per response: 0.5
    1. Name and Address of Reporting Person*
    MARINO GLENN P

    (Last) (First) (Middle)
    1250 S. CAPITAL OF TEXAS HIGHWAY
    BUILDING 2, SUITE 285

    (Street)
    AUSTIN TX 78746

    (City) (State) (Zip)
    2. Date of Event Requiring Statement (Month/Day/Year)
    06/25/2025
    3. Issuer Name and Ticker or Trading Symbol
    SilverBox Corp IV [ SBXD ]
    4. Relationship of Reporting Person(s) to Issuer
    (Check all applicable)
    X Director 10% Owner
    Officer (give title below) Other (specify below)
    5. If Amendment, Date of Original Filed (Month/Day/Year)
    6. Individual or Joint/Group Filing (Check Applicable Line)
    X Form filed by One Reporting Person
    Form filed by More than One Reporting Person
    Table I - Non-Derivative Securities Beneficially Owned
    1. Title of Security (Instr. 4) 2. Amount of Securities Beneficially Owned (Instr. 4) 3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5) 4. Nature of Indirect Beneficial Ownership (Instr. 5)
    Table II - Derivative Securities Beneficially Owned
    (e.g., puts, calls, warrants, options, convertible securities)
    1. Title of Derivative Security (Instr. 4) 2. Date Exercisable and Expiration Date (Month/Day/Year) 3. Title and Amount of Securities Underlying Derivative Security (Instr. 4) 4. Conversion or Exercise Price of Derivative Security 5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5) 6. Nature of Indirect Beneficial Ownership (Instr. 5)
    Date Exercisable Expiration Date Title Amount or Number of Shares
    Explanation of Responses:
    No securities are beneficially owned.
    /s/ Glenn P. Marino 07/02/2025
    ** Signature of Reporting Person Date
    Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
    * If the form is filed by more than one reporting person, see Instruction 5 (b)(v).
    ** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
    Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
    Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
    Get the next $SBXD alert in real time by email

    Crush Q1 2026 with the Best AI Superconnector

    Stay ahead of the competition with Standout.work - your AI-powered talent-to-startup matching platform.

    AI-Powered Inbox
    Context-aware email replies
    Strategic Decision Support
    Get Started with Standout.work

    Recent Analyst Ratings for
    $SBXD

    DatePrice TargetRatingAnalyst
    More analyst ratings

    $SBXD
    Insider Trading

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

    View All

    SEC Form 3 filed by new insider Marino Glenn P

    3 - SilverBox Corp IV (0002015947) (Issuer)

    7/2/25 4:15:03 PM ET
    $SBXD

    $SBXD
    Press Releases

    Fastest customizable press release news feed in the world

    View All

    Parataxis Holdings LLC Announces Definitive Agreement with Sinsiway Co. Ltd. (KOSDAQ: 290560), to Bring Institutionally-Backed, Ethereum Treasury Company to the South Korean Public Markets

    Parataxis Holdings LLC ("Parataxis Holdings"), an affiliate of Parataxis Capital Management LLC ("Parataxis Capital" or "PCM"), together with other affiliated entities, has entered into a definitive agreement with Sinsiway Co. Ltd. (KOSDAQ: 290560) ("Sinsiway" or the "Company") in a transaction valued up to KRW 35 billion, which would result in Parataxis Holdings affiliates holding a controlling interest in the Company (the "Transaction"). Following the closing of the Transaction, the Company intends to change its corporate name to Parataxis ETH, Inc. and remain listed on the KOSDAQ. The Transaction is subject to closing conditions. The Transaction would result in the creation of South Kor

    12/4/25 4:05:00 PM ET
    $SBXD

    Parataxis Holdings Reaches Key Milestones at Parataxis Korea, South Korea's First Institutionally-Backed Public Bitcoin Treasury and Mining Platform

    Highlights accelerated strategy execution, reaching over 150 Bitcoin through disciplined accumulation Closes KRW 10 billion capital raise, supported by both Korean and U.S. institutional investors Intends to complete strategic U.S. mining acquisition, establishing a vertically-integrated BTC yield platform expected to generate strong EBITDA margins Parataxis Holdings LLC ("Parataxis Holdings" or the "Company"), an institutional digital asset management platform combining Bitcoin ("BTC") exposure, proprietary growth opportunities, and accretive yield generation, today provided corporate updates highlighting significant operational progress at its South Korean investment, Parataxis Kore

    10/15/25 8:00:00 AM ET
    $SBXD

    Bitcoin-Native, Institutional Digital Asset Management Platform Parataxis Holdings to Go Public via Combination with SilverBox Corp IV

    Proposed Transaction to Create Proprietary Digital Asset Management Platform with Established Institutional Leadership Team Poised to Capitalize on Digital Asset Growth Establishes Defensible, Scalable Strategy in Underserved, Highly Attractive South Korean Market with First Mover Advantage in Bitcoin Treasury Strategies Positions Parataxis Holdings to Launch Yield-Enhanced Bitcoin Treasury Strategy in U.S. and South Korean Markets Transaction Would Provide Access of Up to $640 Million of Gross Proceeds Available to Support Acceleration of Digital Asset Purchases and Support Long-Term Strategy Implies Pro Forma Equity Value of Up to $800 Million at $10.00 Per Share, Assumin

    8/6/25 4:30:00 PM ET
    $SBXD

    $SBXD
    SEC Filings

    View All

    Amendment: SEC Form SCHEDULE 13G/A filed by SilverBox Corp IV

    SCHEDULE 13G/A - SilverBox Corp IV (0002015947) (Subject)

    2/13/26 5:02:09 PM ET
    $SBXD

    SEC Form SCHEDULE 13G filed by SilverBox Corp IV

    SCHEDULE 13G - SilverBox Corp IV (0002015947) (Subject)

    2/12/26 6:40:07 AM ET
    $SBXD

    SEC Form SCHEDULE 13G filed by SilverBox Corp IV

    SCHEDULE 13G - SilverBox Corp IV (0002015947) (Subject)

    2/11/26 4:19:50 PM ET
    $SBXD

    $SBXD
    Large Ownership Changes

    This live feed shows all institutional transactions in real time.

    View All

    Amendment: SEC Form SC 13G/A filed by SilverBox Corp IV

    SC 13G/A - SilverBox Corp IV (0002015947) (Subject)

    11/14/24 4:05:53 PM ET
    $SBXD

    SEC Form SC 13G filed by SilverBox Corp IV

    SC 13G - SilverBox Corp IV (0002015947) (Subject)

    11/14/24 4:04:20 PM ET
    $SBXD

    SEC Form SC 13G filed by SilverBox Corp IV

    SC 13G - SilverBox Corp IV (0002015947) (Subject)

    11/13/24 4:07:07 PM ET
    $SBXD