BSAA

SEC source: 0001213900-26-104721 · ownership.xml · derivative · entry 3

Chen Yun · CIK 0002153415 · 10% owner

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnote

Disclosed balance after: 0

Underlying: Class A ordinary shares · 27,700 shares

Expires not disclosed

F3 · derivative.exercise_price: Each holder of a right will receive one-tenth (1/10) of one Class A ordinary share upon consummation of the Issuer's initial business combination. The rights will expire worthless if the Issuer does not consummate an initial business combination within the required time period.

F1 · kind: On September 29, 2026, Naoda Investments Limited, of which Mr. Yun Chen serves as the sole director, sold 100% of its interests in BEST SPAC I (Holdings) Corp., the sponsor of BEST SPAC I Acquisition Corp. (the "Issuer"), to A SPAC (Holdings) Group Corp. for $1. Mr. Chen was previously deemed a beneficial owner of the Issuer's securities by virtue of having shared voting and dispositive power with Kam Chi Kin over the securities held by the sponsor. Mr. Chen did not previously file a Form 3 with respect to such indirect beneficial ownership. As of the date of this report, Mr. Chen no longer has any voting or dispositive power over the Issuer's securities held by BEST SPAC I (Holdings) Corp.

F1 · price: On September 29, 2026, Naoda Investments Limited, of which Mr. Yun Chen serves as the sole director, sold 100% of its interests in BEST SPAC I (Holdings) Corp., the sponsor of BEST SPAC I Acquisition Corp. (the "Issuer"), to A SPAC (Holdings) Group Corp. for $1. Mr. Chen was previously deemed a beneficial owner of the Issuer's securities by virtue of having shared voting and dispositive power with Kam Chi Kin over the securities held by the sponsor. Mr. Chen did not previously file a Form 3 with respect to such indirect beneficial ownership. As of the date of this report, Mr. Chen no longer has any voting or dispositive power over the Issuer's securities held by BEST SPAC I (Holdings) Corp.

F3 · derivative.exercise_date: Each holder of a right will receive one-tenth (1/10) of one Class A ordinary share upon consummation of the Issuer's initial business combination. The rights will expire worthless if the Issuer does not consummate an initial business combination within the required time period.

F3 · derivative.expiration_date: Each holder of a right will receive one-tenth (1/10) of one Class A ordinary share upon consummation of the Issuer's initial business combination. The rights will expire worthless if the Issuer does not consummate an initial business combination within the required time period.

F1 · balance_after: On September 29, 2026, Naoda Investments Limited, of which Mr. Yun Chen serves as the sole director, sold 100% of its interests in BEST SPAC I (Holdings) Corp., the sponsor of BEST SPAC I Acquisition Corp. (the "Issuer"), to A SPAC (Holdings) Group Corp. for $1. Mr. Chen was previously deemed a beneficial owner of the Issuer's securities by virtue of having shared voting and dispositive power with Kam Chi Kin over the securities held by the sponsor. Mr. Chen did not previously file a Form 3 with respect to such indirect beneficial ownership. As of the date of this report, Mr. Chen no longer has any voting or dispositive power over the Issuer's securities held by BEST SPAC I (Holdings) Corp.

F1 · ownership.nature: On September 29, 2026, Naoda Investments Limited, of which Mr. Yun Chen serves as the sole director, sold 100% of its interests in BEST SPAC I (Holdings) Corp., the sponsor of BEST SPAC I Acquisition Corp. (the "Issuer"), to A SPAC (Holdings) Group Corp. for $1. Mr. Chen was previously deemed a beneficial owner of the Issuer's securities by virtue of having shared voting and dispositive power with Kam Chi Kin over the securities held by the sponsor. Mr. Chen did not previously file a Form 3 with respect to such indirect beneficial ownership. As of the date of this report, Mr. Chen no longer has any voting or dispositive power over the Issuer's securities held by BEST SPAC I (Holdings) Corp.

SEC source: 0001213900-26-104721 · ownership.xml · derivative · entry 2

Chen Yun · CIK 0002153415 · 10% owner

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnote

Disclosed balance after: 0

Underlying: Class A ordinary shares · 1,375,000 shares

Expires not disclosed

F2 · derivative.exercise_price: The Class B ordinary shares will automatically convert into Class A ordinary shares at the time of the Issuer's initial business combination, or earlier at the option of the holder, on a one-for-one basis, subject to adjustment. The Class B ordinary shares have no expiration date.

F1 · kind: On September 29, 2026, Naoda Investments Limited, of which Mr. Yun Chen serves as the sole director, sold 100% of its interests in BEST SPAC I (Holdings) Corp., the sponsor of BEST SPAC I Acquisition Corp. (the "Issuer"), to A SPAC (Holdings) Group Corp. for $1. Mr. Chen was previously deemed a beneficial owner of the Issuer's securities by virtue of having shared voting and dispositive power with Kam Chi Kin over the securities held by the sponsor. Mr. Chen did not previously file a Form 3 with respect to such indirect beneficial ownership. As of the date of this report, Mr. Chen no longer has any voting or dispositive power over the Issuer's securities held by BEST SPAC I (Holdings) Corp.

F1 · price: On September 29, 2026, Naoda Investments Limited, of which Mr. Yun Chen serves as the sole director, sold 100% of its interests in BEST SPAC I (Holdings) Corp., the sponsor of BEST SPAC I Acquisition Corp. (the "Issuer"), to A SPAC (Holdings) Group Corp. for $1. Mr. Chen was previously deemed a beneficial owner of the Issuer's securities by virtue of having shared voting and dispositive power with Kam Chi Kin over the securities held by the sponsor. Mr. Chen did not previously file a Form 3 with respect to such indirect beneficial ownership. As of the date of this report, Mr. Chen no longer has any voting or dispositive power over the Issuer's securities held by BEST SPAC I (Holdings) Corp.

F2 · derivative.exercise_date: The Class B ordinary shares will automatically convert into Class A ordinary shares at the time of the Issuer's initial business combination, or earlier at the option of the holder, on a one-for-one basis, subject to adjustment. The Class B ordinary shares have no expiration date.

F2 · derivative.expiration_date: The Class B ordinary shares will automatically convert into Class A ordinary shares at the time of the Issuer's initial business combination, or earlier at the option of the holder, on a one-for-one basis, subject to adjustment. The Class B ordinary shares have no expiration date.

F1 · balance_after: On September 29, 2026, Naoda Investments Limited, of which Mr. Yun Chen serves as the sole director, sold 100% of its interests in BEST SPAC I (Holdings) Corp., the sponsor of BEST SPAC I Acquisition Corp. (the "Issuer"), to A SPAC (Holdings) Group Corp. for $1. Mr. Chen was previously deemed a beneficial owner of the Issuer's securities by virtue of having shared voting and dispositive power with Kam Chi Kin over the securities held by the sponsor. Mr. Chen did not previously file a Form 3 with respect to such indirect beneficial ownership. As of the date of this report, Mr. Chen no longer has any voting or dispositive power over the Issuer's securities held by BEST SPAC I (Holdings) Corp.

F1 · ownership.nature: On September 29, 2026, Naoda Investments Limited, of which Mr. Yun Chen serves as the sole director, sold 100% of its interests in BEST SPAC I (Holdings) Corp., the sponsor of BEST SPAC I Acquisition Corp. (the "Issuer"), to A SPAC (Holdings) Group Corp. for $1. Mr. Chen was previously deemed a beneficial owner of the Issuer's securities by virtue of having shared voting and dispositive power with Kam Chi Kin over the securities held by the sponsor. Mr. Chen did not previously file a Form 3 with respect to such indirect beneficial ownership. As of the date of this report, Mr. Chen no longer has any voting or dispositive power over the Issuer's securities held by BEST SPAC I (Holdings) Corp.

SEC source: 0001213900-26-104721 · ownership.xml · nonDerivative · entry 1

Chen Yun · CIK 0002153415 · 10% owner

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnote

Disclosed balance after: 0

F1 · kind: On September 29, 2026, Naoda Investments Limited, of which Mr. Yun Chen serves as the sole director, sold 100% of its interests in BEST SPAC I (Holdings) Corp., the sponsor of BEST SPAC I Acquisition Corp. (the "Issuer"), to A SPAC (Holdings) Group Corp. for $1. Mr. Chen was previously deemed a beneficial owner of the Issuer's securities by virtue of having shared voting and dispositive power with Kam Chi Kin over the securities held by the sponsor. Mr. Chen did not previously file a Form 3 with respect to such indirect beneficial ownership. As of the date of this report, Mr. Chen no longer has any voting or dispositive power over the Issuer's securities held by BEST SPAC I (Holdings) Corp.

F1 · price: On September 29, 2026, Naoda Investments Limited, of which Mr. Yun Chen serves as the sole director, sold 100% of its interests in BEST SPAC I (Holdings) Corp., the sponsor of BEST SPAC I Acquisition Corp. (the "Issuer"), to A SPAC (Holdings) Group Corp. for $1. Mr. Chen was previously deemed a beneficial owner of the Issuer's securities by virtue of having shared voting and dispositive power with Kam Chi Kin over the securities held by the sponsor. Mr. Chen did not previously file a Form 3 with respect to such indirect beneficial ownership. As of the date of this report, Mr. Chen no longer has any voting or dispositive power over the Issuer's securities held by BEST SPAC I (Holdings) Corp.

F1 · balance_after: On September 29, 2026, Naoda Investments Limited, of which Mr. Yun Chen serves as the sole director, sold 100% of its interests in BEST SPAC I (Holdings) Corp., the sponsor of BEST SPAC I Acquisition Corp. (the "Issuer"), to A SPAC (Holdings) Group Corp. for $1. Mr. Chen was previously deemed a beneficial owner of the Issuer's securities by virtue of having shared voting and dispositive power with Kam Chi Kin over the securities held by the sponsor. Mr. Chen did not previously file a Form 3 with respect to such indirect beneficial ownership. As of the date of this report, Mr. Chen no longer has any voting or dispositive power over the Issuer's securities held by BEST SPAC I (Holdings) Corp.

F1 · ownership.nature: On September 29, 2026, Naoda Investments Limited, of which Mr. Yun Chen serves as the sole director, sold 100% of its interests in BEST SPAC I (Holdings) Corp., the sponsor of BEST SPAC I Acquisition Corp. (the "Issuer"), to A SPAC (Holdings) Group Corp. for $1. Mr. Chen was previously deemed a beneficial owner of the Issuer's securities by virtue of having shared voting and dispositive power with Kam Chi Kin over the securities held by the sponsor. Mr. Chen did not previously file a Form 3 with respect to such indirect beneficial ownership. As of the date of this report, Mr. Chen no longer has any voting or dispositive power over the Issuer's securities held by BEST SPAC I (Holdings) Corp.

SEC source: 0001213900-25-070635 · ownership.xml · derivative · entry 1

BEST SPAC I (Holdings) Corp. · CIK 0002051637 · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,375,000

Underlying: Class A ordinary shares · 206,250 shares

Expires not disclosed

F1 · derivative.exercise_price: On July 30, 2025, BEST SPAC I (Holdings) Corp. forfeited for no consideration an aggregate of 206,250 shares of Class B ordinary shares, which were subsequently cancelled by BEST SPAC I Acquisition Corp. The Issuer's Class B ordinary shares are convertible into the Issuer's Class A ordinary shares on a one-for-one basis at the Reporting Person's election and has no expiration date. Mr. Yun Chen and Mr. Kam Chi Kin share voting and dispositive power over the securities held by the Reporting Person.

F1 · kind: On July 30, 2025, BEST SPAC I (Holdings) Corp. forfeited for no consideration an aggregate of 206,250 shares of Class B ordinary shares, which were subsequently cancelled by BEST SPAC I Acquisition Corp. The Issuer's Class B ordinary shares are convertible into the Issuer's Class A ordinary shares on a one-for-one basis at the Reporting Person's election and has no expiration date. Mr. Yun Chen and Mr. Kam Chi Kin share voting and dispositive power over the securities held by the Reporting Person.

F1 · price: On July 30, 2025, BEST SPAC I (Holdings) Corp. forfeited for no consideration an aggregate of 206,250 shares of Class B ordinary shares, which were subsequently cancelled by BEST SPAC I Acquisition Corp. The Issuer's Class B ordinary shares are convertible into the Issuer's Class A ordinary shares on a one-for-one basis at the Reporting Person's election and has no expiration date. Mr. Yun Chen and Mr. Kam Chi Kin share voting and dispositive power over the securities held by the Reporting Person.

F1 · derivative.exercise_date: On July 30, 2025, BEST SPAC I (Holdings) Corp. forfeited for no consideration an aggregate of 206,250 shares of Class B ordinary shares, which were subsequently cancelled by BEST SPAC I Acquisition Corp. The Issuer's Class B ordinary shares are convertible into the Issuer's Class A ordinary shares on a one-for-one basis at the Reporting Person's election and has no expiration date. Mr. Yun Chen and Mr. Kam Chi Kin share voting and dispositive power over the securities held by the Reporting Person.

F1 · derivative.expiration_date: On July 30, 2025, BEST SPAC I (Holdings) Corp. forfeited for no consideration an aggregate of 206,250 shares of Class B ordinary shares, which were subsequently cancelled by BEST SPAC I Acquisition Corp. The Issuer's Class B ordinary shares are convertible into the Issuer's Class A ordinary shares on a one-for-one basis at the Reporting Person's election and has no expiration date. Mr. Yun Chen and Mr. Kam Chi Kin share voting and dispositive power over the securities held by the Reporting Person.

SEC source: 0001213900-25-055653 · ownership.xml · derivative · entry 2

BEST SPAC I (Holdings) Corp. · CIK 0002051637 · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 277,000

Underlying: Class A ordinary shares · 27,700 shares

Expires not disclosed

F2 · derivative.exercise_price: The rights convert automatically into Class A ordinary shares at the completion of the Issuer's initial business combination.

F1 · price: Reflects the 277,000 units owned by BEST SPAC I (Holdings) Corp., the Issuer's sponsor. Each unit consists of one Class A ordinary shares and one right to receive one-tenth (1/10) of one Class A ordinary share upon consummation of the Issuer's initial business combination. The units were purchased at $10.00 per unit for an aggregate purchase price of $2,770,000. Mr. Yun Chen and Mr. Kam Chi Kin share voting and dispositive power over our securities held by the sponsor.

F2 · price: The rights convert automatically into Class A ordinary shares at the completion of the Issuer's initial business combination.

F2 · derivative.exercise_date: The rights convert automatically into Class A ordinary shares at the completion of the Issuer's initial business combination.

F2 · derivative.expiration_date: The rights convert automatically into Class A ordinary shares at the completion of the Issuer's initial business combination.

SEC source: 0001213900-25-055653 · ownership.xml · nonDerivative · entry 1

BEST SPAC I (Holdings) Corp. · CIK 0002051637 · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 277,000

F1 · price: Reflects the 277,000 units owned by BEST SPAC I (Holdings) Corp., the Issuer's sponsor. Each unit consists of one Class A ordinary shares and one right to receive one-tenth (1/10) of one Class A ordinary share upon consummation of the Issuer's initial business combination. The units were purchased at $10.00 per unit for an aggregate purchase price of $2,770,000. Mr. Yun Chen and Mr. Kam Chi Kin share voting and dispositive power over our securities held by the sponsor.