Insider filing report for Changes in Beneficial Ownership
- Schedule 13G & 13D forms are used to report a party's ownership of stock which exceeds 5% of a company's total stock issue.
- Schedule 13G is a shorter version of Schedule 13D with fewer reporting requirements.
"Insiders might sell their shares for any number of reasons, but they buy them for only one: they think the price will rise"
- Peter Lynch
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- Peter Lynch
What is insider trading>>
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549 |
SCHEDULE 13D
Under the Securities Exchange Act of 1934
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Bullish (Name of Issuer) |
Ordinary Shares (Title of Class of Securities) |
G16910120 (CUSIP Number) |
Brendan F. Blumer 10/F, 60 Nexus Way, Camana Bay George Town, Grand Cayman, E9, KY1-9006 (345) 640-9996 Karen Ubell 525 Market Street, 32nd Floor San Francisco, CA, 94105 (415) 733-6074 (Name, Address and Telephone Number of Person Authorized to Receive Notices and Communications) |
08/14/2025 (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.


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
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CUSIP No. | G16910120 |
1 |
Name of reporting person
Brendan F. Blumer | ||||||||
2 | Check the appropriate box if a member of a Group (See Instructions)
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3 | SEC 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)
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6 | Citizenship or place of organization
CHINA
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Number of Shares Beneficially Owned by Each Reporting Person With: |
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11 | Aggregate amount beneficially owned by each reporting person
41,134,432.00 | ||||||||
12 | Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)
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13 | Percent of class represented by amount in Row (11)
28.1 % | ||||||||
14 | Type of Reporting Person (See Instructions)
IN |
Comment for Type of Reporting Person:
*All percentage calculations set forth herein are based upon the aggregate of 146,183,739 shares of Ordinary Shares outstanding as of the August 13, 2025, as assumed in the Form 424B4 final prospectus filed by Bullish under the Securities Act of 1933 on August 13, 2025 (the "Prospectus").
SCHEDULE 13D
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Item 1. | Security and Issuer |
(a) | Title of Class of Securities:
Ordinary Shares |
(b) | Name of Issuer:
Bullish |
(c) | Address of Issuer's Principal Executive Offices:
10A Building A, 60 Nexus Way, Camana Bay, George Town, Grand Cayman,
CAYMAN ISLANDS
, KY1-9005. |
Item 2. | Identity and Background |
(a) | Brendan F. Blumer (the "Reporting Person") |
(b) | 10/F, 60 Nexus Way, Camana Bay, George Town, Grand Cayman, Cayman Islands KY1-9006 |
(c) | The Reporting Person co-founded the Issuer and has served as a member of the Board of Directors of the Issuer since inception. The Reporting Person was also Chairman of the Board of Directors of the Issuer prior to completion of the Issuer's initial public offering (the "IPO"). The Reporting Person also serves as Chief Executive Officer of block.one. |
(d) | None. |
(e) | None. |
(f) | Hong Kong SAR - China |
Item 3. | Source and Amount of Funds or Other Consideration |
The information set forth or incorporated by reference in Item 6 of this Statement is incorporated by reference into this Item 3. The Reporting Person directly holds 39,166,869 Ordinary Shares and is the beneficial holder of 1,976,563 Ordinary Shares held by Buttonwood Investments 1, an entity which the Reporting Person controls. Prior to the Issuer's initial public offering (the "IPO"), the Reporting Person directly held 39,166,869 shares of Issuer's Class A Shares (the "Class A Shares") and beneficially held 1,976,563 Class A Shares through Buttonwood Investments 1. The Reporting Person acquired 78,315,718 Class A Shares on August 2, 2024, pursuant to a dividend declared by block.one which distributed such shares to the Reporting Person, as the sole shareholder of block.one. Buttonwood Investments 1 acquired 3,953,126 Class A Shares on February 27, 2025, pursuant to a transaction in which block.one transferred all of its remaining Class A Shares to Buttonwood Investments 1. As disclosed in the Form F-1 Registration Statement filed by the Issuer under the Securities Act of 1933 on August 4, 2025 (the "Registration Statement"), block.one is a Cayman Islands exempted company which, was the controlling shareholder of Bullish until July 2024 at which time the shareholders of block.one, other than the Reporting Person, exchanged their block.one shares for shares of the Issuer's Class A Shares. The descriptions of such transactions provided in the Registration Statement are incorporated herein by reference. On August 1, 2025, the Issuer effected a 1-for-2 reverse stock split pursuant to which all of the Class A Shares owned or beneficially owned by the Reporting Person were exchanged for the number of Class A shares as described in the third sentence of this Item 3(a) to Schedule 13D. In connection with and immediately prior to the closing of the IPO, on August 14, 2025, the Class A Shares discussed above automatically converted into shares of Ordinary Shares on a 1-for-1 basis. block.one granted certain individuals an option to acquire Class A Shares of the Issuer held by block.one pursuant to Call Option Agreements (the "Call Option Agreements") in the form attached to this Schedule 13D as Exhibit 99.2. Pursuant to the transactions described in this Item 3, when block.one transferred its remaining Class A Shares of the Issuer to Buttonwood Investments 1, Buttonwood Investments 1 assumed the rights and obligations of block.one pursuant to the Call Option Agreements. The Call Option Agreements allow Buttonwood Investments 1 to transfer the covered shares to affiliates of Buttonwood Investments 1 but not to non-affiliates. Buttonwood Investments 1 retains voting control over the covered shares. The terms of the Call Option Agreements provided in Exhibit 99.2 are incorporated herein by reference. Buttonwood Investments 1 has entered into Call Option Agreements with third parties for a total of 1,967,563 Ordinary Shares of the Issuer (the "Call Option Shares"). The description of such arrangements provided in the Prospectus are incorporated herein by reference. This Schedule 13D characterizes the Call Option Shares as being subject to shared dispositive power pursuant to the terms of the Call Option Agreements. | |
Item 4. | Purpose of Transaction |
The information set forth or incorporated by reference in Items 3 and 6 of this Statement is incorporated by reference into this Item 4. The Reporting Person intends to continuously review his investment in the Issuer and may in the future determine (1) to acquire additional securities of the Issuer, through open market purchases, private agreements or otherwise, (2) to dispose of all or a portion of the securities of the Issuer owned by him or (3) to take any other available course of action. Notwithstanding anything contained herein, the Reporting Person specifically reserves the right to change his intention with respect to any or all of such matters. In reaching any decision as to his course of action (as well as to the specific elements thereof), the Reporting Person currently expects that he would take into consideration a variety of factors, including, but not limited to, the following: the Issuer's business and prospects; other developments concerning the Issuer and its business generally; other business opportunities available to the Reporting Person; developments with respect to the business of the Reporting Person; changes in law and government regulations; general economic conditions; and money and stock market conditions, including the market price of the securities of the Issuer. Other than as described above, the Reporting Person does not currently have any plans or proposals that relate to, or may result in, any of the matters listed in subparagraphs (a) through (j) of Item 4 of Schedule 13D. The Reporting Person is a member of the Board of Directors of the Issuer and, accordingly, in such capacity, may have influence over the corporate activities of the Issuer, including activities which may relate to items described in subparagraphs (a) through (j) of Item 4 of Schedule 13D. Subject to the Issuer's Insider Trading Policy, the Reporting Person may from time to time buy or sell securities of the Issuer as appropriate for his personal circumstances. | |
Item 5. | Interest in Securities of the Issuer |
(a) | The information set forth in rows 7 through 13 of the cover page to this Schedule 13D is incorporated by reference (the "Reporting Shares"). The Reporting Shares represent approximately 28.1% of the Ordinary Shares of the Issuer. |
(b) | 41,134,432 |
(c) | The Reporting Person has not effected any transactions of the Class A Shares (prior to the closing of the IPO) or the as-converted Ordinary Shares (following the closing of the IPO) during the 60 days preceding the date of this report, except as described in Item 3 of this Schedule 13D which information is incorporated herein by reference. |
(d) | The information provided in Section 3 of this Schedule 13D is incorporated by reference. |
(e) | N/A. |
Item 6. | Contracts, Arrangements, Understandings or Relationships With Respect to Securities of the Issuer |
The information provided in Section 3 of this Schedule 13D is incorporated by reference. Prior to and in connection with the IPO, the Reporting Person and Buttonwood Investments 1 each entered into a lock-up agreement with the underwriters of the IPO, pursuant to which the Reporting Person and Buttonwood Investments 1 each agreed to be subject to a 180-day lockup on the sale and transfer of shares of the Company held by the Reporting Person and Buttonwood Investments 1 as of the effectiveness of the Issuer's registration statement on form F-1 (the "Lock-up Agreement"). The foregoing description of the Lock-up Agreement does not purport to be complete and is qualified in its entirety by reference to the full text of the form of Lock-up Agreement, a copy of which is attached to this Schedule 13D as Exhibit 99.1. The Reporting Person serves as a member of the Board of Directors of the Issuer. Additionally, in such capacity, the Reporting Person may receive compensation from the Issuer for his services as a member of the Board of Directors. Such compensation may include grants of equity awards with respect to the Issuer's Ordinary Shares from time to time. | |
Item 7. | Material to be Filed as Exhibits. |
Exhibit 99.1 - Form of Lock-Up Agreement, attached as Exhibit D to the Form of Underwriting Agreement by and among the underwriters listed in Schedule 1 thereto and certain directors, officers, and existing shareholders of the Issuer (incorporated by reference to Exhibit 1.1 of the Form F-1 Registration Statement filed by the Issuer under the Securities Act of 1933 on August 4, 2025). Exhibit 99.2 - Form of Call Option Agreement, including amendments thereto |
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.
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