ANGELO MARK

SEC source: 0001104659-26-114443 · tm2627250-1_4seq1.xml · derivative · entry 2

ANGELO MARK · CIK 0001271848 · Director · 10% owner

Yorkville Acquisition Sponsor II, LLC · CIK 0002089425 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnote

Disclosed balance after: 12,500

Underlying: Warrants · 12,500 shares

Expires not disclosed

F1 · derivative.exercise_price: On September 30, 2026, the Issuer issued a convertible promissory note (the "Note") in the principal amount of $250,000.00 to Yorkville Acquisition Sponsor II, LLC (the "Sponsor"), in order to provide the Issuer with additional working capital. All amounts due under the Note may be converted into 25,000 units. Each unit consists of one Class A ordinary share ("Ordinary Share") and one-half of one warrant to purchase one Ordinary Share, resulting in 25,000 Ordinary Shares and warrants to purchase 12,500 Ordinary Shares of the Issuer upon the consummation of the business combination. The warrants shall have the same terms and conditions as the warrants issued in the Issuer's initial public offering.

F3 · price: The Ordinary Shares and warrants are described under the heading "Description of Securities" in the Issuer's Registration Statement on Form S-1 (File No. 333-284793).

F1 · derivative.exercise_date: On September 30, 2026, the Issuer issued a convertible promissory note (the "Note") in the principal amount of $250,000.00 to Yorkville Acquisition Sponsor II, LLC (the "Sponsor"), in order to provide the Issuer with additional working capital. All amounts due under the Note may be converted into 25,000 units. Each unit consists of one Class A ordinary share ("Ordinary Share") and one-half of one warrant to purchase one Ordinary Share, resulting in 25,000 Ordinary Shares and warrants to purchase 12,500 Ordinary Shares of the Issuer upon the consummation of the business combination. The warrants shall have the same terms and conditions as the warrants issued in the Issuer's initial public offering.

F2 · derivative.expiration_date: The principal balance of the Note shall be payable by the Issuer on the earlier of the date on which the Issuer consummates its initial business combination or the date that the winding up of the Issuer is effective, and is convertible at the Sponsor's election upon the consummation of the initial business combination.

F4 · ownership.nature: Yorkville Advisors Global, LP ("Yorkville LP") is the manager of the Sponsor and holds voting and investment discretion over the securities held by the Sponsor. YA II PN, Ltd. ("YA II PN") is a member of the Sponsor. Yorkville LP is the investment manager of YA II PN, and Yorkville Advisors Global II, LLC ("Yorkville LLC") is the General Partner of Yorkville LP. Mr. Angelo serves as President of Yorkville LLC and makes all investment decisions for YA II PN. As such, Mr. Angelo may be deemed to have beneficial ownership of the securities held by the Sponsor. Mr. Angelo disclaims any beneficial ownership of the reported securities, except to the extent of his pecuniary interest therein.

SEC source: 0001104659-26-114443 · tm2627250-1_4seq1.xml · derivative · entry 1

ANGELO MARK · CIK 0001271848 · Director · 10% owner

Yorkville Acquisition Sponsor II, LLC · CIK 0002089425 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnote

Disclosed balance after: 25,000

Underlying: Class A Ordinary Shares · 25,000 shares

Expires not disclosed

F1 · derivative.exercise_price: On September 30, 2026, the Issuer issued a convertible promissory note (the "Note") in the principal amount of $250,000.00 to Yorkville Acquisition Sponsor II, LLC (the "Sponsor"), in order to provide the Issuer with additional working capital. All amounts due under the Note may be converted into 25,000 units. Each unit consists of one Class A ordinary share ("Ordinary Share") and one-half of one warrant to purchase one Ordinary Share, resulting in 25,000 Ordinary Shares and warrants to purchase 12,500 Ordinary Shares of the Issuer upon the consummation of the business combination. The warrants shall have the same terms and conditions as the warrants issued in the Issuer's initial public offering.

F3 · price: The Ordinary Shares and warrants are described under the heading "Description of Securities" in the Issuer's Registration Statement on Form S-1 (File No. 333-284793).

F1 · derivative.exercise_date: On September 30, 2026, the Issuer issued a convertible promissory note (the "Note") in the principal amount of $250,000.00 to Yorkville Acquisition Sponsor II, LLC (the "Sponsor"), in order to provide the Issuer with additional working capital. All amounts due under the Note may be converted into 25,000 units. Each unit consists of one Class A ordinary share ("Ordinary Share") and one-half of one warrant to purchase one Ordinary Share, resulting in 25,000 Ordinary Shares and warrants to purchase 12,500 Ordinary Shares of the Issuer upon the consummation of the business combination. The warrants shall have the same terms and conditions as the warrants issued in the Issuer's initial public offering.

F2 · derivative.expiration_date: The principal balance of the Note shall be payable by the Issuer on the earlier of the date on which the Issuer consummates its initial business combination or the date that the winding up of the Issuer is effective, and is convertible at the Sponsor's election upon the consummation of the initial business combination.

F4 · ownership.nature: Yorkville Advisors Global, LP ("Yorkville LP") is the manager of the Sponsor and holds voting and investment discretion over the securities held by the Sponsor. YA II PN, Ltd. ("YA II PN") is a member of the Sponsor. Yorkville LP is the investment manager of YA II PN, and Yorkville Advisors Global II, LLC ("Yorkville LLC") is the General Partner of Yorkville LP. Mr. Angelo serves as President of Yorkville LLC and makes all investment decisions for YA II PN. As such, Mr. Angelo may be deemed to have beneficial ownership of the securities held by the Sponsor. Mr. Angelo disclaims any beneficial ownership of the reported securities, except to the extent of his pecuniary interest therein.

SEC source: 0001271848-26-000005 · form4.xml · derivative · entry 2

ANGELO MARK · CIK 0001271848 · Director · 10% owner

Yorkville BW Acquisition Sponsor, LLC · CIK 0002098097 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · By Yorkville BW Acquisition Sponsor, LLC

Disclosed balance after: 37,500

Underlying: Warrants · 37,500 shares

Expires not disclosed

F1 · security: On August 11, 2026, the Issuer entered into an Amended and Restated Working Capital Note ("Note") promising to pay Yorkville BW Acquisition Sponsor, LLC ( "Sponsor") $750,000. All amounts due under the Note may be converted into 75,000 units. Each unit consists of one Class A ordinary share ("Ordinary Shares") and one-half of one warrant to purchase one Ordinary Share, resulting in 75,000 Ordinary Shares and warrants to purchase 37,500 Ordinary shares of the Issuer at the discretion of the Sponsor upon the consummation of the business combinations. The warrants shall have the same terms and conditions as the warrants issued in the initial public offering. The acquisition of the Note by the Sponsor, and the beneficial acquisition of the Note by the Sponsor's members, is an exempt transaction under Rule 16b-3, promulgated by the U.S. Securities and Exchange Commission pursuant to the Securities Act of 1934, as amended.

F1 · derivative.exercise_price: On August 11, 2026, the Issuer entered into an Amended and Restated Working Capital Note ("Note") promising to pay Yorkville BW Acquisition Sponsor, LLC ( "Sponsor") $750,000. All amounts due under the Note may be converted into 75,000 units. Each unit consists of one Class A ordinary share ("Ordinary Shares") and one-half of one warrant to purchase one Ordinary Share, resulting in 75,000 Ordinary Shares and warrants to purchase 37,500 Ordinary shares of the Issuer at the discretion of the Sponsor upon the consummation of the business combinations. The warrants shall have the same terms and conditions as the warrants issued in the initial public offering. The acquisition of the Note by the Sponsor, and the beneficial acquisition of the Note by the Sponsor's members, is an exempt transaction under Rule 16b-3, promulgated by the U.S. Securities and Exchange Commission pursuant to the Securities Act of 1934, as amended.

F3 · price: The Issuer's Ordinary Shares and warrants are described under the heading "Description of Securities" in the Issuer's Registration Statement on Form S-1 (File No. 333-285075).

F1 · derivative.exercise_date: On August 11, 2026, the Issuer entered into an Amended and Restated Working Capital Note ("Note") promising to pay Yorkville BW Acquisition Sponsor, LLC ( "Sponsor") $750,000. All amounts due under the Note may be converted into 75,000 units. Each unit consists of one Class A ordinary share ("Ordinary Shares") and one-half of one warrant to purchase one Ordinary Share, resulting in 75,000 Ordinary Shares and warrants to purchase 37,500 Ordinary shares of the Issuer at the discretion of the Sponsor upon the consummation of the business combinations. The warrants shall have the same terms and conditions as the warrants issued in the initial public offering. The acquisition of the Note by the Sponsor, and the beneficial acquisition of the Note by the Sponsor's members, is an exempt transaction under Rule 16b-3, promulgated by the U.S. Securities and Exchange Commission pursuant to the Securities Act of 1934, as amended.

F2 · derivative.expiration_date: The principal balance of the Note shall be payable by the Issuer on the earlier of the date on which the Issuer consummates its initial business combination or the date that the winding up of the Issuer is effective, and is convertible at the Sponsor's election upon the consummation of the initial business combination.

F4 · ownership.nature: Yorkville Advisors Global, LP ("Yorkville LP") is the manager of the Sponsor and holds voting and investment discretion over the securities held by the Sponsor. YA II PN, Ltd. ("YA II PN") is a member of the Sponsor. Yorkville LP is the investment manager of YA II PN, and Yorkville Advisors Global II, LLC ("Yorkville LLC") is the General Partner of Yorkville LP. Mr. Angelo serves as President of Yorkville LLC and makes all investment decisions for YA II PN. As such, Mr. Angelo may be deemed to have beneficial ownership of the securities held by the Sponsor. Mr. Angelo disclaims any beneficial ownership of the reported securities, except to the extent of his pecuniary interest therein.

SEC source: 0001271848-26-000005 · form4.xml · derivative · entry 1

ANGELO MARK · CIK 0001271848 · Director · 10% owner

Yorkville BW Acquisition Sponsor, LLC · CIK 0002098097 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · By Yorkville BW Acquisition Sponsor, LLC

Disclosed balance after: 75,000

Underlying: Class A ordinary shares · 75,000 shares

Expires not disclosed

F1 · security: On August 11, 2026, the Issuer entered into an Amended and Restated Working Capital Note ("Note") promising to pay Yorkville BW Acquisition Sponsor, LLC ( "Sponsor") $750,000. All amounts due under the Note may be converted into 75,000 units. Each unit consists of one Class A ordinary share ("Ordinary Shares") and one-half of one warrant to purchase one Ordinary Share, resulting in 75,000 Ordinary Shares and warrants to purchase 37,500 Ordinary shares of the Issuer at the discretion of the Sponsor upon the consummation of the business combinations. The warrants shall have the same terms and conditions as the warrants issued in the initial public offering. The acquisition of the Note by the Sponsor, and the beneficial acquisition of the Note by the Sponsor's members, is an exempt transaction under Rule 16b-3, promulgated by the U.S. Securities and Exchange Commission pursuant to the Securities Act of 1934, as amended.

F1 · derivative.exercise_price: On August 11, 2026, the Issuer entered into an Amended and Restated Working Capital Note ("Note") promising to pay Yorkville BW Acquisition Sponsor, LLC ( "Sponsor") $750,000. All amounts due under the Note may be converted into 75,000 units. Each unit consists of one Class A ordinary share ("Ordinary Shares") and one-half of one warrant to purchase one Ordinary Share, resulting in 75,000 Ordinary Shares and warrants to purchase 37,500 Ordinary shares of the Issuer at the discretion of the Sponsor upon the consummation of the business combinations. The warrants shall have the same terms and conditions as the warrants issued in the initial public offering. The acquisition of the Note by the Sponsor, and the beneficial acquisition of the Note by the Sponsor's members, is an exempt transaction under Rule 16b-3, promulgated by the U.S. Securities and Exchange Commission pursuant to the Securities Act of 1934, as amended.

F3 · price: The Issuer's Ordinary Shares and warrants are described under the heading "Description of Securities" in the Issuer's Registration Statement on Form S-1 (File No. 333-285075).

F1 · derivative.exercise_date: On August 11, 2026, the Issuer entered into an Amended and Restated Working Capital Note ("Note") promising to pay Yorkville BW Acquisition Sponsor, LLC ( "Sponsor") $750,000. All amounts due under the Note may be converted into 75,000 units. Each unit consists of one Class A ordinary share ("Ordinary Shares") and one-half of one warrant to purchase one Ordinary Share, resulting in 75,000 Ordinary Shares and warrants to purchase 37,500 Ordinary shares of the Issuer at the discretion of the Sponsor upon the consummation of the business combinations. The warrants shall have the same terms and conditions as the warrants issued in the initial public offering. The acquisition of the Note by the Sponsor, and the beneficial acquisition of the Note by the Sponsor's members, is an exempt transaction under Rule 16b-3, promulgated by the U.S. Securities and Exchange Commission pursuant to the Securities Act of 1934, as amended.

F2 · derivative.expiration_date: The principal balance of the Note shall be payable by the Issuer on the earlier of the date on which the Issuer consummates its initial business combination or the date that the winding up of the Issuer is effective, and is convertible at the Sponsor's election upon the consummation of the initial business combination.

F4 · ownership.nature: Yorkville Advisors Global, LP ("Yorkville LP") is the manager of the Sponsor and holds voting and investment discretion over the securities held by the Sponsor. YA II PN, Ltd. ("YA II PN") is a member of the Sponsor. Yorkville LP is the investment manager of YA II PN, and Yorkville Advisors Global II, LLC ("Yorkville LLC") is the General Partner of Yorkville LP. Mr. Angelo serves as President of Yorkville LLC and makes all investment decisions for YA II PN. As such, Mr. Angelo may be deemed to have beneficial ownership of the securities held by the Sponsor. Mr. Angelo disclaims any beneficial ownership of the reported securities, except to the extent of his pecuniary interest therein.

SEC source: 0001271848-26-000003 · primary_doc.xml · derivative · entry 2

ANGELO MARK · CIK 0001271848 · Director · 10% owner

Yorkville Acquisition Sponsor LLC · CIK 0002074603 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · Yorkville Acquisition Sponsor, LLC

Disclosed balance after: 16,666

Underlying: Warrants · 16,666 shares

Expires not disclosed

F1 · derivative.exercise_price: On May 4, 2026, the Issuer entered into an Amended and Restated Working Capital Note (the "Note") promising to pay Yorkville Acquisition Sponsor, LLC (the "Sponsor") $500,000. All amounts due under the Note may be converted into 50,000 units. Each unit consists of one Class A ordinary share and one-third of one warrant to purchase one Class A ordinary share, resulting in an aggregate of 50,000 Class A ordinary shares and warrants to purchase an additional 16,666 Class A ordinary shares of the Issuer at the discretion of the Sponsor upon the consummation of the business combinations. The warrants shall have the same terms and conditions as the warrants issued in the Issuer's initial public offering. The acquisition of the Note by the Sponsor, and through it, the beneficial acquisition of the Note by the Sponsor's members, is an exempt transaction under Rule 16b-3, promulgated by the U.S. Securities and Exchange Commission pursuant to the Securities Act of 1934, as amended.

F3 · price: The Issuer's Class A ordinary shares and warrants are described under the heading "Description of Securities" in the Issuer's Registration Statement on Form S-1 (File No. 333-286569).

F1 · derivative.exercise_date: On May 4, 2026, the Issuer entered into an Amended and Restated Working Capital Note (the "Note") promising to pay Yorkville Acquisition Sponsor, LLC (the "Sponsor") $500,000. All amounts due under the Note may be converted into 50,000 units. Each unit consists of one Class A ordinary share and one-third of one warrant to purchase one Class A ordinary share, resulting in an aggregate of 50,000 Class A ordinary shares and warrants to purchase an additional 16,666 Class A ordinary shares of the Issuer at the discretion of the Sponsor upon the consummation of the business combinations. The warrants shall have the same terms and conditions as the warrants issued in the Issuer's initial public offering. The acquisition of the Note by the Sponsor, and through it, the beneficial acquisition of the Note by the Sponsor's members, is an exempt transaction under Rule 16b-3, promulgated by the U.S. Securities and Exchange Commission pursuant to the Securities Act of 1934, as amended.

F2 · derivative.expiration_date: The principal balance of the Note shall be payable by the Issuer on the earlier of the date on which the Issuer consummates its initial business combination or the date that the winding up of the Issuer is effective, and is convertible at the Sponsor's election upon the consummation of the initial business combination.

F4 · ownership.nature: Yorkville Advisors Global, LP ("Yorkville LP") is the manager of the Sponsor and holds voting and investment discretion over the securities held by the Sponsor. YA II PN, Ltd. ("YA II PN") is a member of the Sponsor. Yorkville LP is the investment manager of YA II PN, and Yorkville Advisors Global II, LLC ("Yorkville LLC") is the General Partner of Yorkville LP. Mr. Angelo serves as President of Yorkville LLC and makes all investment decisions for YA II PN. As such, Mr. Angelo may be deemed to have beneficial ownership of the securities held by the Sponsor. Mr. Angelo disclaims any beneficial ownership of the reported securities, except to the extent of his pecuniary interest therein.

SEC source: 0001271848-26-000003 · primary_doc.xml · derivative · entry 1

ANGELO MARK · CIK 0001271848 · Director · 10% owner

Yorkville Acquisition Sponsor LLC · CIK 0002074603 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · Yorkville Acquisition Sponsor, LLC

Disclosed balance after: 50,000

Underlying: Class A ordinary shares · 50,000 shares

Expires not disclosed

F1 · derivative.exercise_price: On May 4, 2026, the Issuer entered into an Amended and Restated Working Capital Note (the "Note") promising to pay Yorkville Acquisition Sponsor, LLC (the "Sponsor") $500,000. All amounts due under the Note may be converted into 50,000 units. Each unit consists of one Class A ordinary share and one-third of one warrant to purchase one Class A ordinary share, resulting in an aggregate of 50,000 Class A ordinary shares and warrants to purchase an additional 16,666 Class A ordinary shares of the Issuer at the discretion of the Sponsor upon the consummation of the business combinations. The warrants shall have the same terms and conditions as the warrants issued in the Issuer's initial public offering. The acquisition of the Note by the Sponsor, and through it, the beneficial acquisition of the Note by the Sponsor's members, is an exempt transaction under Rule 16b-3, promulgated by the U.S. Securities and Exchange Commission pursuant to the Securities Act of 1934, as amended.

F3 · price: The Issuer's Class A ordinary shares and warrants are described under the heading "Description of Securities" in the Issuer's Registration Statement on Form S-1 (File No. 333-286569).

F1 · derivative.exercise_date: On May 4, 2026, the Issuer entered into an Amended and Restated Working Capital Note (the "Note") promising to pay Yorkville Acquisition Sponsor, LLC (the "Sponsor") $500,000. All amounts due under the Note may be converted into 50,000 units. Each unit consists of one Class A ordinary share and one-third of one warrant to purchase one Class A ordinary share, resulting in an aggregate of 50,000 Class A ordinary shares and warrants to purchase an additional 16,666 Class A ordinary shares of the Issuer at the discretion of the Sponsor upon the consummation of the business combinations. The warrants shall have the same terms and conditions as the warrants issued in the Issuer's initial public offering. The acquisition of the Note by the Sponsor, and through it, the beneficial acquisition of the Note by the Sponsor's members, is an exempt transaction under Rule 16b-3, promulgated by the U.S. Securities and Exchange Commission pursuant to the Securities Act of 1934, as amended.

F2 · derivative.expiration_date: The principal balance of the Note shall be payable by the Issuer on the earlier of the date on which the Issuer consummates its initial business combination or the date that the winding up of the Issuer is effective, and is convertible at the Sponsor's election upon the consummation of the initial business combination.

F4 · ownership.nature: Yorkville Advisors Global, LP ("Yorkville LP") is the manager of the Sponsor and holds voting and investment discretion over the securities held by the Sponsor. YA II PN, Ltd. ("YA II PN") is a member of the Sponsor. Yorkville LP is the investment manager of YA II PN, and Yorkville Advisors Global II, LLC ("Yorkville LLC") is the General Partner of Yorkville LP. Mr. Angelo serves as President of Yorkville LLC and makes all investment decisions for YA II PN. As such, Mr. Angelo may be deemed to have beneficial ownership of the securities held by the Sponsor. Mr. Angelo disclaims any beneficial ownership of the reported securities, except to the extent of his pecuniary interest therein.

SEC source: 0001104659-26-076503 · tm2618506-1_4seq1.xml · nonDerivative · entry 1

ANGELO MARK · CIK 0001271848 · Director · 10% owner

YA II PN, Ltd. · CIK 0001463928 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnote

Disclosed balance after: 1,050,000

F1 · kind: On February 27, 2026, YA II PN, Ltd. ("YA II PN") purchased 125,000 Class A ordinary shares on the open market at a price of $10.4785 per share.

F1 · shares: On February 27, 2026, YA II PN, Ltd. ("YA II PN") purchased 125,000 Class A ordinary shares on the open market at a price of $10.4785 per share.

F2 · shares: Yorkville Advisors Global, LP ("Yorkville LP") is the investment manager of YA II PN. Yorkville Advisors Global II, LLC ("Yorkville LLC") is the General Partner Yorkville LP. Mr. Angelo serves as President and Managing Member of Yorkville LP, and as President and Managing Member of Yorkville LLC. All investment decisions for YA II PN are made by Mark Angelo. As such, Mr. Angelo may be deemed to have beneficial ownership of the securities held by YA II PN. Mr. Angelo disclaims any beneficial ownership of the reported securities, except to the extent of his pecuniary interest therein.

F2 · ownership.nature: Yorkville Advisors Global, LP ("Yorkville LP") is the investment manager of YA II PN. Yorkville Advisors Global II, LLC ("Yorkville LLC") is the General Partner Yorkville LP. Mr. Angelo serves as President and Managing Member of Yorkville LP, and as President and Managing Member of Yorkville LLC. All investment decisions for YA II PN are made by Mark Angelo. As such, Mr. Angelo may be deemed to have beneficial ownership of the securities held by YA II PN. Mr. Angelo disclaims any beneficial ownership of the reported securities, except to the extent of his pecuniary interest therein.

SEC source: 0001271848-26-000001 · primary_doc.xml · derivative · entry 1

ANGELO MARK · CIK 0001271848 · Director · 10% owner

Yorkville Acquisition Sponsor LLC · CIK 0002074603 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnote

Disclosed balance after: 1

Underlying: Units · 25,000 shares

Expires not disclosed

F1 · security: On February 11, 2026, the Issuer issued a convertible promissory note (the "Working Capital Note") in the principal amount of $250,000.00 to Yorkville Acquisition Sponsor, LLC (the "Sponsor"), in order to provide the Issuer with additional working capital.

F2 · derivative.exercise_price: Pursuant to the terms of the Working Capital Note, the principal balance shall not accrue interest; shall be payable by the Issuer on the earlier of the date on which the Issuer consummates its initial business combination or the date that the winding up of the Issuer is effective; and is convertible at the Sponsor's election upon the consummation of the Company's initial business combination. Should the Sponsor elect to convert all or a portion of the principal balance, the elected principal balance amount will convert, at a price of $10.00 per unit, into units identical to the private placement units issued in connection with the Issuer's initial public offering, rounded down to the nearest whole number.

F1 · kind: On February 11, 2026, the Issuer issued a convertible promissory note (the "Working Capital Note") in the principal amount of $250,000.00 to Yorkville Acquisition Sponsor, LLC (the "Sponsor"), in order to provide the Issuer with additional working capital.

F1 · price: On February 11, 2026, the Issuer issued a convertible promissory note (the "Working Capital Note") in the principal amount of $250,000.00 to Yorkville Acquisition Sponsor, LLC (the "Sponsor"), in order to provide the Issuer with additional working capital.

F2 · derivative.exercise_date: Pursuant to the terms of the Working Capital Note, the principal balance shall not accrue interest; shall be payable by the Issuer on the earlier of the date on which the Issuer consummates its initial business combination or the date that the winding up of the Issuer is effective; and is convertible at the Sponsor's election upon the consummation of the Company's initial business combination. Should the Sponsor elect to convert all or a portion of the principal balance, the elected principal balance amount will convert, at a price of $10.00 per unit, into units identical to the private placement units issued in connection with the Issuer's initial public offering, rounded down to the nearest whole number.

F3 · derivative.exercise_date: Each unit will consist of (a) one Class A ordinary share and (b) one-third of one warrant to purchase one Class A ordinary share, at an exercise price of $11.50 per share, exercisable beginning 30 days after the completion of the Issuer's initial business combination, and expiring 5 years after the completion of the Issuer's initial business combination or earlier upon redemption or liquidation.

F2 · derivative.expiration_date: Pursuant to the terms of the Working Capital Note, the principal balance shall not accrue interest; shall be payable by the Issuer on the earlier of the date on which the Issuer consummates its initial business combination or the date that the winding up of the Issuer is effective; and is convertible at the Sponsor's election upon the consummation of the Company's initial business combination. Should the Sponsor elect to convert all or a portion of the principal balance, the elected principal balance amount will convert, at a price of $10.00 per unit, into units identical to the private placement units issued in connection with the Issuer's initial public offering, rounded down to the nearest whole number.

F3 · derivative.expiration_date: Each unit will consist of (a) one Class A ordinary share and (b) one-third of one warrant to purchase one Class A ordinary share, at an exercise price of $11.50 per share, exercisable beginning 30 days after the completion of the Issuer's initial business combination, and expiring 5 years after the completion of the Issuer's initial business combination or earlier upon redemption or liquidation.

F2 · derivative.underlying: Pursuant to the terms of the Working Capital Note, the principal balance shall not accrue interest; shall be payable by the Issuer on the earlier of the date on which the Issuer consummates its initial business combination or the date that the winding up of the Issuer is effective; and is convertible at the Sponsor's election upon the consummation of the Company's initial business combination. Should the Sponsor elect to convert all or a portion of the principal balance, the elected principal balance amount will convert, at a price of $10.00 per unit, into units identical to the private placement units issued in connection with the Issuer's initial public offering, rounded down to the nearest whole number.

F3 · derivative.underlying: Each unit will consist of (a) one Class A ordinary share and (b) one-third of one warrant to purchase one Class A ordinary share, at an exercise price of $11.50 per share, exercisable beginning 30 days after the completion of the Issuer's initial business combination, and expiring 5 years after the completion of the Issuer's initial business combination or earlier upon redemption or liquidation.

F2 · derivative.underlying_shares: Pursuant to the terms of the Working Capital Note, the principal balance shall not accrue interest; shall be payable by the Issuer on the earlier of the date on which the Issuer consummates its initial business combination or the date that the winding up of the Issuer is effective; and is convertible at the Sponsor's election upon the consummation of the Company's initial business combination. Should the Sponsor elect to convert all or a portion of the principal balance, the elected principal balance amount will convert, at a price of $10.00 per unit, into units identical to the private placement units issued in connection with the Issuer's initial public offering, rounded down to the nearest whole number.

F3 · derivative.underlying_shares: Each unit will consist of (a) one Class A ordinary share and (b) one-third of one warrant to purchase one Class A ordinary share, at an exercise price of $11.50 per share, exercisable beginning 30 days after the completion of the Issuer's initial business combination, and expiring 5 years after the completion of the Issuer's initial business combination or earlier upon redemption or liquidation.

F4 · ownership.nature: Yorkville Advisors Global, LP ("Yorkville LP") is the manager of the Sponsor and holds voting and investment discretion over the securities held by the Sponsor. YA II PN, Ltd. ("YA II PN") is a member of the Sponsor. Yorkville LP is the investment manager of YA II PN, and Yorkville Advisors Global II, LLC ("Yorkville LLC") is the General Partner of Yorkville LP. Mr. Angelo serves as President of Yorkville LLC and makes all investment decisions for YA II PN. As such, Mr. Angelo may be deemed to have beneficial ownership of the securities held by the Sponsor. Mr. Angelo disclaims any beneficial ownership of the reported securities, except to the extent of his pecuniary interest therein.

SEC source: 0001104659-26-011669 · tm265573-1_4seq1.xml · nonDerivative · entry 2

ANGELO MARK · CIK 0001271848 · Director · 10% owner

YA II PN, Ltd. · CIK 0001463928 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnote

Disclosed balance after: 925,000

F2 · kind: On February 6, 2026, YA II PN purchased 737,691 Class A ordinary shares on the open market at a price of $10.7993 per share.

F2 · shares: On February 6, 2026, YA II PN purchased 737,691 Class A ordinary shares on the open market at a price of $10.7993 per share.

F3 · shares: Yorkville Advisors Global, LP ("Yorkville LP") is the investment manager of YA II PN. Yorkville Advisors Global II, LLC ("Yorkville LLC") is the General Partner Yorkville LP. Mr. Angelo serves as President and Managing Member of Yorkville LP, and as President and Managing Member of Yorkville LLC. All investment decisions for YA II PN are made by Mark Angelo. As such, Mr. Angelo may be deemed to have beneficial ownership of the securities held by YA II PN. Mr. Angelo disclaims any beneficial ownership of the reported securities, except to the extent of his pecuniary interest therein.

F2 · price: On February 6, 2026, YA II PN purchased 737,691 Class A ordinary shares on the open market at a price of $10.7993 per share.

F3 · balance_after: Yorkville Advisors Global, LP ("Yorkville LP") is the investment manager of YA II PN. Yorkville Advisors Global II, LLC ("Yorkville LLC") is the General Partner Yorkville LP. Mr. Angelo serves as President and Managing Member of Yorkville LP, and as President and Managing Member of Yorkville LLC. All investment decisions for YA II PN are made by Mark Angelo. As such, Mr. Angelo may be deemed to have beneficial ownership of the securities held by YA II PN. Mr. Angelo disclaims any beneficial ownership of the reported securities, except to the extent of his pecuniary interest therein.

F3 · ownership.nature: Yorkville Advisors Global, LP ("Yorkville LP") is the investment manager of YA II PN. Yorkville Advisors Global II, LLC ("Yorkville LLC") is the General Partner Yorkville LP. Mr. Angelo serves as President and Managing Member of Yorkville LP, and as President and Managing Member of Yorkville LLC. All investment decisions for YA II PN are made by Mark Angelo. As such, Mr. Angelo may be deemed to have beneficial ownership of the securities held by YA II PN. Mr. Angelo disclaims any beneficial ownership of the reported securities, except to the extent of his pecuniary interest therein.

SEC source: 0001104659-26-011669 · tm265573-1_4seq1.xml · nonDerivative · entry 1

ANGELO MARK · CIK 0001271848 · Director · 10% owner

YA II PN, Ltd. · CIK 0001463928 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnote

Disclosed balance after: 187,309

F1 · kind: On February 4, 2026, YA II PN, Ltd. ("YA II PN") purchased 187,309 Class A ordinary shares on the open market at a price of $10.635 per share.

F1 · shares: On February 4, 2026, YA II PN, Ltd. ("YA II PN") purchased 187,309 Class A ordinary shares on the open market at a price of $10.635 per share.

F3 · shares: Yorkville Advisors Global, LP ("Yorkville LP") is the investment manager of YA II PN. Yorkville Advisors Global II, LLC ("Yorkville LLC") is the General Partner Yorkville LP. Mr. Angelo serves as President and Managing Member of Yorkville LP, and as President and Managing Member of Yorkville LLC. All investment decisions for YA II PN are made by Mark Angelo. As such, Mr. Angelo may be deemed to have beneficial ownership of the securities held by YA II PN. Mr. Angelo disclaims any beneficial ownership of the reported securities, except to the extent of his pecuniary interest therein.

F1 · price: On February 4, 2026, YA II PN, Ltd. ("YA II PN") purchased 187,309 Class A ordinary shares on the open market at a price of $10.635 per share.

F3 · balance_after: Yorkville Advisors Global, LP ("Yorkville LP") is the investment manager of YA II PN. Yorkville Advisors Global II, LLC ("Yorkville LLC") is the General Partner Yorkville LP. Mr. Angelo serves as President and Managing Member of Yorkville LP, and as President and Managing Member of Yorkville LLC. All investment decisions for YA II PN are made by Mark Angelo. As such, Mr. Angelo may be deemed to have beneficial ownership of the securities held by YA II PN. Mr. Angelo disclaims any beneficial ownership of the reported securities, except to the extent of his pecuniary interest therein.

F3 · ownership.nature: Yorkville Advisors Global, LP ("Yorkville LP") is the investment manager of YA II PN. Yorkville Advisors Global II, LLC ("Yorkville LLC") is the General Partner Yorkville LP. Mr. Angelo serves as President and Managing Member of Yorkville LP, and as President and Managing Member of Yorkville LLC. All investment decisions for YA II PN are made by Mark Angelo. As such, Mr. Angelo may be deemed to have beneficial ownership of the securities held by YA II PN. Mr. Angelo disclaims any beneficial ownership of the reported securities, except to the extent of his pecuniary interest therein.

SEC source: 0001271848-26-000002 · primary_doc.xml · derivative · entry 1

ANGELO MARK · CIK 0001271848 · Director · 10% owner

Yorkville BW Acquisition Sponsor, LLC · CIK 0002098097 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnote

Disclosed balance after: 1

Underlying: Units · 50,000 shares

Expires not disclosed

F1 · security: On January 26, 2026, the Issuer issued a convertible promissory note (the "Working Capital Note") in the principal amount of $500,000.00 to Yorkville BW Acquisition Sponsor, LLC (the "Sponsor"), in order to provide the Issuer with additional working capital. The acquisition of the Working Capital Note by the Sponsor, and through it, the beneficial acquisition of the Working Capital Note by the Sponsor's members and interest holders, is an exempt transaction under Rule 16b-3, promulgated by the U.S. Securities and Exchange Commission pursuant to the Securities Exchange Act of 1934, as amended.

F2 · derivative.exercise_price: Pursuant to the terms of the Working Capital Note, the principal balance shall not accrue interest; shall be payable by the Issuer on the earlier of the date on which the Issuer consummates its initial business combination or the date that the winding up of the Issuer is effective; and is convertible at the Sponsor's election upon the consummation of the Company's initial business combination. Should the Sponsor elect to convert all or a portion of the principal balance, the elected principal balance amount will convert, at a price of $10.00 per unit, into units identical to the private placement units issued in connection with the Issuer's initial public offering, rounded down to the nearest whole number.

F1 · kind: On January 26, 2026, the Issuer issued a convertible promissory note (the "Working Capital Note") in the principal amount of $500,000.00 to Yorkville BW Acquisition Sponsor, LLC (the "Sponsor"), in order to provide the Issuer with additional working capital. The acquisition of the Working Capital Note by the Sponsor, and through it, the beneficial acquisition of the Working Capital Note by the Sponsor's members and interest holders, is an exempt transaction under Rule 16b-3, promulgated by the U.S. Securities and Exchange Commission pursuant to the Securities Exchange Act of 1934, as amended.

F1 · price: On January 26, 2026, the Issuer issued a convertible promissory note (the "Working Capital Note") in the principal amount of $500,000.00 to Yorkville BW Acquisition Sponsor, LLC (the "Sponsor"), in order to provide the Issuer with additional working capital. The acquisition of the Working Capital Note by the Sponsor, and through it, the beneficial acquisition of the Working Capital Note by the Sponsor's members and interest holders, is an exempt transaction under Rule 16b-3, promulgated by the U.S. Securities and Exchange Commission pursuant to the Securities Exchange Act of 1934, as amended.

F2 · derivative.exercise_date: Pursuant to the terms of the Working Capital Note, the principal balance shall not accrue interest; shall be payable by the Issuer on the earlier of the date on which the Issuer consummates its initial business combination or the date that the winding up of the Issuer is effective; and is convertible at the Sponsor's election upon the consummation of the Company's initial business combination. Should the Sponsor elect to convert all or a portion of the principal balance, the elected principal balance amount will convert, at a price of $10.00 per unit, into units identical to the private placement units issued in connection with the Issuer's initial public offering, rounded down to the nearest whole number.

F3 · derivative.exercise_date: Each unit will consist of (a) one Class A ordinary share and (b) one-half of one warrant to purchase one Class A ordinary share, at an exercise price of $11.50 per share, which will become exercisable at the later of (i) 12 months from the closing of the Issuer's initial public offering and (ii) 30 days after the completion of the Issuer's initial business combination, and expiring 5 years after the completion of the Issuer's initial business combination, or earlier upon redemption or liquidation.

F2 · derivative.expiration_date: Pursuant to the terms of the Working Capital Note, the principal balance shall not accrue interest; shall be payable by the Issuer on the earlier of the date on which the Issuer consummates its initial business combination or the date that the winding up of the Issuer is effective; and is convertible at the Sponsor's election upon the consummation of the Company's initial business combination. Should the Sponsor elect to convert all or a portion of the principal balance, the elected principal balance amount will convert, at a price of $10.00 per unit, into units identical to the private placement units issued in connection with the Issuer's initial public offering, rounded down to the nearest whole number.

F3 · derivative.expiration_date: Each unit will consist of (a) one Class A ordinary share and (b) one-half of one warrant to purchase one Class A ordinary share, at an exercise price of $11.50 per share, which will become exercisable at the later of (i) 12 months from the closing of the Issuer's initial public offering and (ii) 30 days after the completion of the Issuer's initial business combination, and expiring 5 years after the completion of the Issuer's initial business combination, or earlier upon redemption or liquidation.

F2 · derivative.underlying: Pursuant to the terms of the Working Capital Note, the principal balance shall not accrue interest; shall be payable by the Issuer on the earlier of the date on which the Issuer consummates its initial business combination or the date that the winding up of the Issuer is effective; and is convertible at the Sponsor's election upon the consummation of the Company's initial business combination. Should the Sponsor elect to convert all or a portion of the principal balance, the elected principal balance amount will convert, at a price of $10.00 per unit, into units identical to the private placement units issued in connection with the Issuer's initial public offering, rounded down to the nearest whole number.

F3 · derivative.underlying: Each unit will consist of (a) one Class A ordinary share and (b) one-half of one warrant to purchase one Class A ordinary share, at an exercise price of $11.50 per share, which will become exercisable at the later of (i) 12 months from the closing of the Issuer's initial public offering and (ii) 30 days after the completion of the Issuer's initial business combination, and expiring 5 years after the completion of the Issuer's initial business combination, or earlier upon redemption or liquidation.

F2 · derivative.underlying_shares: Pursuant to the terms of the Working Capital Note, the principal balance shall not accrue interest; shall be payable by the Issuer on the earlier of the date on which the Issuer consummates its initial business combination or the date that the winding up of the Issuer is effective; and is convertible at the Sponsor's election upon the consummation of the Company's initial business combination. Should the Sponsor elect to convert all or a portion of the principal balance, the elected principal balance amount will convert, at a price of $10.00 per unit, into units identical to the private placement units issued in connection with the Issuer's initial public offering, rounded down to the nearest whole number.

F3 · derivative.underlying_shares: Each unit will consist of (a) one Class A ordinary share and (b) one-half of one warrant to purchase one Class A ordinary share, at an exercise price of $11.50 per share, which will become exercisable at the later of (i) 12 months from the closing of the Issuer's initial public offering and (ii) 30 days after the completion of the Issuer's initial business combination, and expiring 5 years after the completion of the Issuer's initial business combination, or earlier upon redemption or liquidation.

F4 · ownership.nature: Yorkville Advisors Global, LP ("Yorkville LP") is the manager of the Sponsor and holds voting and investment discretion over the securities held by the Sponsor. YA II PN, Ltd. ("YA II PN") is a member of the Sponsor. Yorkville LP is the investment manager of YA II PN, and Yorkville Advisors Global II, LLC ("Yorkville LLC") is the General Partner of Yorkville LP. Mr. Angelo serves as President of Yorkville LLC and makes all investment decisions for YA II PN. As such, Mr. Angelo may be deemed to have beneficial ownership of the securities held by the Sponsor. Mr. Angelo disclaims any beneficial ownership of the reported securities, except to the extent of his pecuniary interest therein.

SEC source: 0001213900-25-061173 · ownership.xml · nonDerivative · entry 1

ANGELO MARK · CIK 0001271848 · Director · 10% owner

10b5-1 filing: No plan indicated

Ownership: Indirect · See footnote

Disclosed balance after: 351,825

F1 · price: Simultaneously with the consummation of Yorkville Acquisition Corp.'s (the "Issuer") initial public offering, Yorkville Acquisition Sponsor LLC (the "Sponsor") purchased 351,825 Private Placement Units, each consisting of (i) one Class A ordinary share and (ii) one-third of one redeemable warrant, at a price of $10.00 per placement unit, or $3,518,250 in the aggregate.

F2 · balance_after: Reflects the 351,825 Class A ordinary shares underlying the Private Placement Units.

F3 · ownership.nature: YA II PN, Ltd. ("YA II PN") is the sole managing member of the Sponsor and holds voting and investment discretion over the securities held by the Sponsor. YA II PN is managed by Yorkville Advisors Global, LP ("Yorkville LP"), whose General Partner is Yorkville Advisors Global II, LLC ("Yorkville LLC"). All investment decisions for YA II PN are made by Mark Angelo, President and Managing Member of Yorkville LLC, and, as President and Managing Member of Yorkville LLC, Mr. Angelo may be deemed to have beneficial ownership of the securities held by the Sponsor. Mr. Angelo disclaims any beneficial ownership of the reported shares other than to the extent of any pecuniary interest he may have therein, directly or indirectly.