Dinu Raluca

SEC source: 0001430575-26-000007 · form4.xml · nonDerivative · entry 1

Dinu Raluca · CIK 0001430575 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,393,066

F1 · shares: Subject to the Reporting Person's continued service to QT Imaging Holdings, Inc. (the "Company"), three-sixteenths of this Restricted Stock Unit ("RSU") will vest on November 15, 2026, and the remaining thirteen-sixteenths will vest in thirteen equal quarterly installments on each subsequent February 15, May 15, August 15, and November 15, such that the RSU will be fully vested on February 15, 2030; all shares under this RSU shall immediately vest in the event of a Change of Control (as defined in the QT Imaging Holdings, Inc. Amended and Restated 2024 Equity Incentive Plan) of the Company.

SEC source: 0001430575-26-000005 · form4.xml · nonDerivative · entry 1

Dinu Raluca · CIK 0001430575 · Director · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 154,895

F1 · shares: Subject to the Reporting Person's continued service to Hadron Energy, Inc. (the "Company"), fifty percent of the Restricted Stock Unit ("RSU") shall vest on August 15, 2026, and the remaining fifty percent will vest in two equal installments on November 15 and February 15, such that the grant will be fully vested on February 15, 2027.

SEC source: 0001451693-26-000012 · primary_doc.xml · derivative · entry 6

Katz Avi S · CIK 0001451693 · Director · Chairman · 10% owner

GigAcquisitions7 Corp. · CIK 0002023728 · 10% owner

Dinu Raluca · CIK 0001430575 · Director · 10% owner

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

10b5-1 filing: No plan indicated

Ownership: Indirect · GigAcquisitions7 Corp.

Disclosed balance after: 0

Underlying: Warrants · 29,300 shares

Expires 2026-05-22

F5 · derivative.exercise_price: In connection with the closing of the Merger, the principal balance of the convertible promissory note was paid in full.

F5 · price: In connection with the closing of the Merger, the principal balance of the convertible promissory note was paid in full.

F4 · ownership.nature: The Common Stock are held directly by GigAcquisitions7 Corp. (the "Sponsor"). The shares held by the Sponsor are beneficially owned by Dr. Katz, the Issuer's Chairman of the Board of Directors, and Dr. Dinu, the Issuer's Director. Dr. Katz and Dr. Dinu are the members of the Sponsor, who both have the voting and dispositive power over the shares held by the Sponsor.

SEC source: 0001451693-26-000012 · primary_doc.xml · derivative · entry 5

Katz Avi S · CIK 0001451693 · Director · Chairman · 10% owner

GigAcquisitions7 Corp. · CIK 0002023728 · 10% owner

Dinu Raluca · CIK 0001430575 · Director · 10% owner

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

10b5-1 filing: No plan indicated

Ownership: Indirect · GigAcquisitions7 Corp.

Disclosed balance after: 0

Underlying: Class A ordinary shares · 29,300 shares

Expires 2026-05-22

F5 · derivative.exercise_price: In connection with the closing of the Merger, the principal balance of the convertible promissory note was paid in full.

F5 · price: In connection with the closing of the Merger, the principal balance of the convertible promissory note was paid in full.

F4 · ownership.nature: The Common Stock are held directly by GigAcquisitions7 Corp. (the "Sponsor"). The shares held by the Sponsor are beneficially owned by Dr. Katz, the Issuer's Chairman of the Board of Directors, and Dr. Dinu, the Issuer's Director. Dr. Katz and Dr. Dinu are the members of the Sponsor, who both have the voting and dispositive power over the shares held by the Sponsor.

SEC source: 0001451693-26-000012 · primary_doc.xml · derivative · entry 4

Katz Avi S · CIK 0001451693 · Director · Chairman · 10% owner

GigAcquisitions7 Corp. · CIK 0002023728 · 10% owner

Dinu Raluca · CIK 0001430575 · Director · 10% owner

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

10b5-1 filing: No plan indicated

Ownership: Indirect · GigAcquisitions7 Corp.

Disclosed balance after: 0

Underlying: Common Stock · 9,932,246 shares

Expires 2026-05-22

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · derivative.exercise_price: The closing price of the Company's Common Stock on the effective date of the Merger was $5.16.

F2 · price: The closing price of the Company's Common Stock on the effective date of the Merger was $5.16.

F4 · ownership.nature: The Common Stock are held directly by GigAcquisitions7 Corp. (the "Sponsor"). The shares held by the Sponsor are beneficially owned by Dr. Katz, the Issuer's Chairman of the Board of Directors, and Dr. Dinu, the Issuer's Director. Dr. Katz and Dr. Dinu are the members of the Sponsor, who both have the voting and dispositive power over the shares held by the Sponsor.

SEC source: 0001451693-26-000012 · primary_doc.xml · nonDerivative · entry 3

Katz Avi S · CIK 0001451693 · Director · Chairman · 10% owner

GigAcquisitions7 Corp. · CIK 0002023728 · 10% owner

Dinu Raluca · CIK 0001430575 · Director · 10% owner

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

10b5-1 filing: No plan indicated

Ownership: Indirect · By GigAcquisitions7 Corp.

Disclosed balance after: 9,932,246

F4 · shares: The Common Stock are held directly by GigAcquisitions7 Corp. (the "Sponsor"). The shares held by the Sponsor are beneficially owned by Dr. Katz, the Issuer's Chairman of the Board of Directors, and Dr. Dinu, the Issuer's Director. Dr. Katz and Dr. Dinu are the members of the Sponsor, who both have the voting and dispositive power over the shares held by the Sponsor.

F2 · price: The closing price of the Company's Common Stock on the effective date of the Merger was $5.16.

F4 · ownership.nature: The Common Stock are held directly by GigAcquisitions7 Corp. (the "Sponsor"). The shares held by the Sponsor are beneficially owned by Dr. Katz, the Issuer's Chairman of the Board of Directors, and Dr. Dinu, the Issuer's Director. Dr. Katz and Dr. Dinu are the members of the Sponsor, who both have the voting and dispositive power over the shares held by the Sponsor.

SEC source: 0001451693-26-000012 · primary_doc.xml · nonDerivative · entry 2

Katz Avi S · CIK 0001451693 · Director · Chairman · 10% owner

GigAcquisitions7 Corp. · CIK 0002023728 · 10% owner

Dinu Raluca · CIK 0001430575 · Director · 10% owner

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

10b5-1 filing: No plan indicated

Ownership: Indirect · By Spouse, Dr. Raluca Dinu

Disclosed balance after: 87,500

F3 · shares: Received by Dr. Raluca Dinu in exchange for 1,750.04 shares of Hadron held by Dr. Dinu, in connection with the Merger of Hadron into a subsidiary of the Company pursuant to the exchange ratio set forth in the business combination agreement between Hadron and the Company. The acquisition of these shares is an exempt transaction under Rule 16b-3, promulgated by the U.S. Securities and Exchange pursuant to the Securities and Exchange Act of 1934, as amended.

F2 · price: The closing price of the Company's Common Stock on the effective date of the Merger was $5.16.

SEC source: 0001451693-26-000012 · primary_doc.xml · nonDerivative · entry 1

Katz Avi S · CIK 0001451693 · Director · Chairman · 10% owner

GigAcquisitions7 Corp. · CIK 0002023728 · 10% owner

Dinu Raluca · CIK 0001430575 · Director · 10% owner

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

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 87,500

F1 · shares: Received by Dr. Avi S. Katz in exchange for 1,750.04 shares of Hadron Energy, Inc. ("Hadron") held by Dr. Katz, in connection with the merger of Hadron into a subsidiary of GigCapital7 Corp. (the "Company") (the "Merger") pursuant to the exchange ratio set forth in the business combination agreement between Hadron and the Company. The acquisition of these shares is an exempt transaction under Rule 16b-3, promulgated by the U.S. Securities and Exchange pursuant to the Securities and Exchange Act of 1934, as amended.

F2 · price: The closing price of the Company's Common Stock on the effective date of the Merger was $5.16.

SEC source: 0001451693-26-000011 · form4.xml · derivative · entry 2

Katz Avi S · CIK 0001451693 · Director · CEO; Chairmain · 10% owner

GigAcquisitions7 Corp. · CIK 0002023728 · 10% owner

Dinu Raluca · CIK 0001430575 · Director · 10% owner

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

10b5-1 filing: No plan indicated

Ownership: Indirect · GigAcquisitions7 Corp.

Disclosed balance after: 29,300

Underlying: Warrants · 29,300 shares

Expires not disclosed

F1 · derivative.exercise_price: On April 16, 2026, the Issuer entered into an Amended and Restated Convertible Promissory Note (the "Note") promising to pay Sponsor, $293,000.00. All amounts due under the Note may be converted into 29,300 units. Each unit consisting of one Class A ordinary share and one warrant to purchase one Class A ordinary share, resulting in the aggregate of 29,300 Class A ordinary shares and warrants to purchase an additional 29,300 Class A ordinary shares of the Issuer at the discretion of the Sponsor upon the consummation of the business combination. The warrants shall have the same terms and conditions as 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 sole members, 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.

F3 · price: The Issuer's Class A ordinary shares and warrants as described under the heading "Description of Securities" in the Issuer's Registration Statement on Form S-1 (File No. 333-280015).

F1 · derivative.exercise_date: On April 16, 2026, the Issuer entered into an Amended and Restated Convertible Promissory Note (the "Note") promising to pay Sponsor, $293,000.00. All amounts due under the Note may be converted into 29,300 units. Each unit consisting of one Class A ordinary share and one warrant to purchase one Class A ordinary share, resulting in the aggregate of 29,300 Class A ordinary shares and warrants to purchase an additional 29,300 Class A ordinary shares of the Issuer at the discretion of the Sponsor upon the consummation of the business combination. The warrants shall have the same terms and conditions as 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 sole members, 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.expiration_date: The principal balance of the Note shall be payable by the Issuer on the earlier of: (i) the date on which Issuer consummates its initial business combination or (ii) the date that the winding up of the Issuer is effective. Payee may elect to convert the Note upon consummation of an initial business combination of the Issuer or at Payee's option at any time prior to the payment in full.

F4 · ownership.nature: The Class B ordinary shares are held directly by GigAcquisitions7 Corp. (the "Sponsor"). The shares held by the Sponsor are beneficially owned by Dr. Katz, GigCapital7 Corp.'s Chief Executive Officer and Chairman of the Board of Directors, and Dr. Raluca Dinu, GigCapital7 Corp.'s Director. Dr. Katz and Dr. Dinu are the sole members of the Sponsor, who both have the voting and dispositive power over the shares held by the Sponsor.

SEC source: 0001451693-26-000011 · form4.xml · derivative · entry 1

Katz Avi S · CIK 0001451693 · Director · CEO; Chairmain · 10% owner

GigAcquisitions7 Corp. · CIK 0002023728 · 10% owner

Dinu Raluca · CIK 0001430575 · Director · 10% owner

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

10b5-1 filing: No plan indicated

Ownership: Indirect · GigAcquisitions7 Corp.

Disclosed balance after: 29,300

Underlying: Class A ordinary shares · 29,300 shares

Expires not disclosed

F1 · derivative.exercise_price: On April 16, 2026, the Issuer entered into an Amended and Restated Convertible Promissory Note (the "Note") promising to pay Sponsor, $293,000.00. All amounts due under the Note may be converted into 29,300 units. Each unit consisting of one Class A ordinary share and one warrant to purchase one Class A ordinary share, resulting in the aggregate of 29,300 Class A ordinary shares and warrants to purchase an additional 29,300 Class A ordinary shares of the Issuer at the discretion of the Sponsor upon the consummation of the business combination. The warrants shall have the same terms and conditions as 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 sole members, 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.

F3 · price: The Issuer's Class A ordinary shares and warrants as described under the heading "Description of Securities" in the Issuer's Registration Statement on Form S-1 (File No. 333-280015).

F1 · derivative.exercise_date: On April 16, 2026, the Issuer entered into an Amended and Restated Convertible Promissory Note (the "Note") promising to pay Sponsor, $293,000.00. All amounts due under the Note may be converted into 29,300 units. Each unit consisting of one Class A ordinary share and one warrant to purchase one Class A ordinary share, resulting in the aggregate of 29,300 Class A ordinary shares and warrants to purchase an additional 29,300 Class A ordinary shares of the Issuer at the discretion of the Sponsor upon the consummation of the business combination. The warrants shall have the same terms and conditions as 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 sole members, 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.expiration_date: The principal balance of the Note shall be payable by the Issuer on the earlier of: (i) the date on which Issuer consummates its initial business combination or (ii) the date that the winding up of the Issuer is effective. Payee may elect to convert the Note upon consummation of an initial business combination of the Issuer or at Payee's option at any time prior to the payment in full.

F4 · ownership.nature: The Class B ordinary shares are held directly by GigAcquisitions7 Corp. (the "Sponsor"). The shares held by the Sponsor are beneficially owned by Dr. Katz, GigCapital7 Corp.'s Chief Executive Officer and Chairman of the Board of Directors, and Dr. Raluca Dinu, GigCapital7 Corp.'s Director. Dr. Katz and Dr. Dinu are the sole members of the Sponsor, who both have the voting and dispositive power over the shares held by the Sponsor.

SEC source: 0001430575-26-000003 · form4.xml · nonDerivative · entry 4

Dinu Raluca · CIK 0001430575 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 908,845

F4 · shares: Subject to the Reporting Person's continued service to the Company, one-third of this Restricted Stock Unit will vest on May 15, 2027, and the remaining two-thirds will vest in eight equal quarterly installments on each subsequent August 15, November 15, February 15, and May 15, such that the grant will be fully vested on May 15, 2029; all shares under this Restricted Stock Unit shall immediately vest in the event of a Change of Control (as defined in the QT Imaging Holdings, Inc. 2024 Equity Incentive Plan) of the Company.

SEC source: 0001430575-26-000003 · form4.xml · nonDerivative · entry 3

Dinu Raluca · CIK 0001430575 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 892,845

F3 · shares: Subject to the Reporting Person's continued service to the Company, the Restricted Stock Unit shall vest quarterly over sixteen equal quarterly installments beginning on May 15, 2026 and on each subsequent August 15, November 15, February 15, and May 15, such that the grant will be fully vested on February 15, 2030; all shares under this Restricted Stock Unit shall immediately vest in the event of a Change of Control (as defined in the QT Imaging Holdings, Inc. 2024 Equity Incentive Plan) of the Company.

SEC source: 0001430575-26-000003 · form4.xml · nonDerivative · entry 2

Dinu Raluca · CIK 0001430575 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 392,845

F2 · shares: Subject to the Reporting Person's continued service to QT Imaging Holdings, Inc. (the "Company"), twenty-five percent of this Restricted Stock Unit will vest on each of May 15, 2026, August 15, 2026, November 15, 2026, and February 15, 2027; all shares under this Restricted Stock Unit shall immediately vest in the event of a Change of Control (as defined in the QT Imaging Holdings, Inc. 2024 Equity Incentive Plan) of the Company.

SEC source: 0002023730-26-000003 · form4.xml · derivative · entry 3

Katz Avi S · CIK 0001451693 · Director · CEO; Chairmain · 10% owner

GigAcquisitions7 Corp. · CIK 0002023728 · 10% owner

Dinu Raluca · CIK 0001430575 · Director · 10% owner

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

10b5-1 filing: No plan indicated

Ownership: Indirect · GigAcquisitions7 Corp.

Disclosed balance after: 14,800

Underlying: Warrants · 14,800 shares

Expires not disclosed

F4 · derivative.exercise_price: On January 30, 2026, the Issuer entered into a Convertible Promissory Note (the "Note") promising to pay Sponsor, $148,000.00. All amounts due under the Note may be converted into 14,800 units. Each unit consisting of one Class A ordinary share and one warrant to purchase one Class A ordinary share, resulting in the aggregate of 14,800 Class A ordinary shares and warrants to purchase an additional 14,800 Class A ordinary shares of the Issuer at the discretion of the Sponsor upon the consummation of the business combination. The warrants shall have the same terms and conditions as 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 sole members, 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.

F6 · price: The Issuer's Class A ordinary shares and warrants as described under the heading "Description of Securities" in the Issuer's Registration Statement on Form S-1 (File No. 333-280015).

F4 · derivative.exercise_date: On January 30, 2026, the Issuer entered into a Convertible Promissory Note (the "Note") promising to pay Sponsor, $148,000.00. All amounts due under the Note may be converted into 14,800 units. Each unit consisting of one Class A ordinary share and one warrant to purchase one Class A ordinary share, resulting in the aggregate of 14,800 Class A ordinary shares and warrants to purchase an additional 14,800 Class A ordinary shares of the Issuer at the discretion of the Sponsor upon the consummation of the business combination. The warrants shall have the same terms and conditions as 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 sole members, 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.

F5 · derivative.expiration_date: The principal balance of the Note shall be payable by the Issuer on the earlier of: (i) the date on which Issuer consummates its initial business combination or (ii) the date that the winding up of the Issuer is effective. Payee may elect to convert the Note upon consummation of an initial business combination of the Issuer or at Payee's option at any time prior to the payment in full.

F3 · ownership.nature: The Class B ordinary shares are held directly by GigAcquisitions7 Corp. (the "Sponsor"). The shares held by the Sponsor are beneficially owned by Dr. Katz, GigCapital7 Corp.'s Chief Executive Officer and Chairman of the Board of Directors, and Dr. Raluca Dinu, GigCapital7 Corp.'s Director. Dr. Katz and Dr. Dinu are the sole members of the Sponsor, who both have the voting and dispositive power over the shares held by the Sponsor.

SEC source: 0002023730-26-000003 · form4.xml · derivative · entry 2

Katz Avi S · CIK 0001451693 · Director · CEO; Chairmain · 10% owner

GigAcquisitions7 Corp. · CIK 0002023728 · 10% owner

Dinu Raluca · CIK 0001430575 · Director · 10% owner

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

10b5-1 filing: No plan indicated

Ownership: Indirect · GigAcquisitions7 Corp.

Disclosed balance after: 14,800

Underlying: Class A ordinary shares · 14,800 shares

Expires not disclosed

F4 · derivative.exercise_price: On January 30, 2026, the Issuer entered into a Convertible Promissory Note (the "Note") promising to pay Sponsor, $148,000.00. All amounts due under the Note may be converted into 14,800 units. Each unit consisting of one Class A ordinary share and one warrant to purchase one Class A ordinary share, resulting in the aggregate of 14,800 Class A ordinary shares and warrants to purchase an additional 14,800 Class A ordinary shares of the Issuer at the discretion of the Sponsor upon the consummation of the business combination. The warrants shall have the same terms and conditions as 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 sole members, 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.

F6 · price: The Issuer's Class A ordinary shares and warrants as described under the heading "Description of Securities" in the Issuer's Registration Statement on Form S-1 (File No. 333-280015).

F4 · derivative.exercise_date: On January 30, 2026, the Issuer entered into a Convertible Promissory Note (the "Note") promising to pay Sponsor, $148,000.00. All amounts due under the Note may be converted into 14,800 units. Each unit consisting of one Class A ordinary share and one warrant to purchase one Class A ordinary share, resulting in the aggregate of 14,800 Class A ordinary shares and warrants to purchase an additional 14,800 Class A ordinary shares of the Issuer at the discretion of the Sponsor upon the consummation of the business combination. The warrants shall have the same terms and conditions as 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 sole members, 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.

F5 · derivative.expiration_date: The principal balance of the Note shall be payable by the Issuer on the earlier of: (i) the date on which Issuer consummates its initial business combination or (ii) the date that the winding up of the Issuer is effective. Payee may elect to convert the Note upon consummation of an initial business combination of the Issuer or at Payee's option at any time prior to the payment in full.

F3 · ownership.nature: The Class B ordinary shares are held directly by GigAcquisitions7 Corp. (the "Sponsor"). The shares held by the Sponsor are beneficially owned by Dr. Katz, GigCapital7 Corp.'s Chief Executive Officer and Chairman of the Board of Directors, and Dr. Raluca Dinu, GigCapital7 Corp.'s Director. Dr. Katz and Dr. Dinu are the sole members of the Sponsor, who both have the voting and dispositive power over the shares held by the Sponsor.

SEC source: 0002023730-26-000003 · form4.xml · derivative · entry 1

Katz Avi S · CIK 0001451693 · Director · CEO; Chairmain · 10% owner

GigAcquisitions7 Corp. · CIK 0002023728 · 10% owner

Dinu Raluca · CIK 0001430575 · Director · 10% owner

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

10b5-1 filing: No plan indicated

Ownership: Indirect · GigAcquisitions7 Corp.

Disclosed balance after: 9,932,246

Underlying: Class A ordinary shares · 175,000 shares

Expires not disclosed

F1 · derivative.exercise_price: The Class B ordinary shares are convertible for the Issuer's Class A ordinary shares as described under the heading "Description of Securities" in the Issuer's Registration Statement on Form S-1 (File No. 333-280015) and have no expiration date.

F2 · kind: The reporting person sold 175,000 shares of Class B ordinary shares for an aggregate of $148,750, which the reporting person holds indirectly through GigAcquisitions7 Corp.

F1 · price: The Class B ordinary shares are convertible for the Issuer's Class A ordinary shares as described under the heading "Description of Securities" in the Issuer's Registration Statement on Form S-1 (File No. 333-280015) and have no expiration date.

F2 · price: The reporting person sold 175,000 shares of Class B ordinary shares for an aggregate of $148,750, which the reporting person holds indirectly through GigAcquisitions7 Corp.

F1 · derivative.exercise_date: The Class B ordinary shares are convertible for the Issuer's Class A ordinary shares as described under the heading "Description of Securities" in the Issuer's Registration Statement on Form S-1 (File No. 333-280015) and have no expiration date.

F1 · derivative.expiration_date: The Class B ordinary shares are convertible for the Issuer's Class A ordinary shares as described under the heading "Description of Securities" in the Issuer's Registration Statement on Form S-1 (File No. 333-280015) and have no expiration date.

F3 · ownership.nature: The Class B ordinary shares are held directly by GigAcquisitions7 Corp. (the "Sponsor"). The shares held by the Sponsor are beneficially owned by Dr. Katz, GigCapital7 Corp.'s Chief Executive Officer and Chairman of the Board of Directors, and Dr. Raluca Dinu, GigCapital7 Corp.'s Director. Dr. Katz and Dr. Dinu are the sole members of the Sponsor, who both have the voting and dispositive power over the shares held by the Sponsor.

SEC source: 0001062993-25-015178 · form4.xml · derivative · entry 1

Dinu Raluca · CIK 0001430575 · Director · 10% owner

10b5-1 filing: No plan indicated

Ownership: Indirect · GigAcquisitions7 Corp.

Disclosed balance after: 10,107,246

Underlying: Class A ordinary shares · 100,000 shares

Expires not disclosed

F1 · derivative.exercise_price: The Class B ordinary shares are convertible for the Issuer's Class A ordinary shares as described under the heading "Description of Securities" in the Issuer's Registration Statement on Form S-1 (File No. 333-280015) and have no expiration date.

F2 · kind: The reporting person transferred 100,000 shares of Class B ordinary shares for no consideration to a non-affiliated charitable organization, which the reporting person holds indirectly through GigAcquisitions7 Corp.

F1 · price: The Class B ordinary shares are convertible for the Issuer's Class A ordinary shares as described under the heading "Description of Securities" in the Issuer's Registration Statement on Form S-1 (File No. 333-280015) and have no expiration date.

F1 · derivative.exercise_date: The Class B ordinary shares are convertible for the Issuer's Class A ordinary shares as described under the heading "Description of Securities" in the Issuer's Registration Statement on Form S-1 (File No. 333-280015) and have no expiration date.

F1 · derivative.expiration_date: The Class B ordinary shares are convertible for the Issuer's Class A ordinary shares as described under the heading "Description of Securities" in the Issuer's Registration Statement on Form S-1 (File No. 333-280015) and have no expiration date.

F3 · ownership.nature: The Class B ordinary shares are held directly by GigAcquisitions7 Corp. (the "Sponsor"). The shares held by the Sponsor are beneficially owned by Dr. Raluca Dinu, GigCapital7 Corp.'s Director and Dr. Katz, GigCapital7 Corp.'s Chairman of the Board of Directors. Dr. Katz and Dr. Dinu are the members of the Sponsor, who both have the voting and dispositive power over the shares held by the Sponsor.

SEC source: 0001062993-25-014339 · form4.xml · derivative · entry 1

Dinu Raluca · CIK 0001430575 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 25,000

Underlying: Common Stock · 25,000 shares

Expires 2035-08-11

F1 · derivative.exercise_date: One-third of the grant will vest on August 15, 2026, and the remaining two-thirds will vest in eight equal quarterly installments on each subsequent November 15, February 15, May 15, and August 15, such that the grant will be fully vested on August 15, 2028, subject to continued service with the Issuer through each vesting date.

SEC source: 0001062993-25-007842 · form4.xml · derivative · entry 2

Dinu Raluca · CIK 0001430575 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 233,750

Underlying: Common Stock · 233,750 shares

Expires 2035-04-21

F2 · derivative.exercise_date: The grant will vest in four equal quarterly installments beginning on May 15, 2025, and continuing on August 15, 2025, November 15, 2025 and February 15, 2026, such that the grant will be fully vested on February 15, 2026, subject to continued service with the Issuer through each vesting date.

SEC source: 0001062993-25-007842 · form4.xml · derivative · entry 1

Dinu Raluca · CIK 0001430575 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 75,000

Underlying: Common Stock · 75,000 shares

Expires 2035-04-21

F1 · derivative.exercise_date: One-third of the grant will vest on February 15, 2026, and the remaining two thirds will vest in eight equal quarterly installments on each subsequent May 15, August 15, November 15 and February 15, such that the grant will be fully vested on February 15, 2028, subject to continued service with the Issuer through each vesting date.

SEC source: 0001062993-25-007325 · form4.xml · derivative · entry 2

Dinu Raluca · CIK 0001430575 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 784,929

Underlying: Common Stock · 784,929 shares

Expires 2035-04-09

F1 · shares: These shares and warrants represent 50% of the shares and warrants that were purchased jointly with the Reporting Person's spouse, Dr. Avi S. Katz, who is also a director of the Issuer and is separately reporting the other 50% of such purchased shares and warrants.

SEC source: 0001062993-25-007325 · form4.xml · nonDerivative · entry 1

Dinu Raluca · CIK 0001430575 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,168,035

F1 · shares: These shares and warrants represent 50% of the shares and warrants that were purchased jointly with the Reporting Person's spouse, Dr. Avi S. Katz, who is also a director of the Issuer and is separately reporting the other 50% of such purchased shares and warrants.

SEC source: 0001062993-25-006250 · form4.xml · derivative · entry 2

Dinu Raluca · CIK 0001430575 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 546,325

Underlying: Common Stock · 75,435 shares

Expires 2030-05-22

SEC source: 0001062993-25-006250 · form4.xml · nonDerivative · entry 1

Dinu Raluca · CIK 0001430575 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 775,570

SEC source: 0001062993-24-019201 · form4.xml · derivative · entry 2

Dinu Raluca · CIK 0001430575 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 470,890

Underlying: Common Stock · 470,890 shares

Expires 2030-05-12

SEC source: 0001062993-24-019201 · form4.xml · nonDerivative · entry 1

Dinu Raluca · CIK 0001430575 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 657,959

SEC source: 0001062993-24-016503 · form4.xml · nonDerivative · entry 1

Dinu Raluca · CIK 0001430575 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 187,069

F1 · kind: Distribution of shares of Common Stock to direct and indirect members of GigAcqusitions5, LLC (the "Sponsor").

SEC source: 0001062993-24-013605 · form4.xml · derivative · entry 3

Dinu Raluca · CIK 0001430575 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 40,000

Underlying: Common Stock · 40,000 shares

Expires 2034-07-03

F1 · derivative.exercise_date: One-third of the option will vest on February 15, 2025, and the remaining two thirds will vest in eight equal quarterly installments on each subsequent May 15, August 15, November 15 and February 15, such that the option will be fully vested on February 15, 2027, subject to the Reporting Person's continued service to the Issuer, through each vesting date.

SEC source: 0001062993-24-013605 · form4.xml · derivative · entry 2

Dinu Raluca · CIK 0001430575 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 550,000

Underlying: Common Stock · 550,000 shares

Expires 2034-07-03

F1 · derivative.exercise_date: One-third of the option will vest on February 15, 2025, and the remaining two thirds will vest in eight equal quarterly installments on each subsequent May 15, August 15, November 15 and February 15, such that the option will be fully vested on February 15, 2027, subject to the Reporting Person's continued service to the Issuer, through each vesting date.

SEC source: 0001062993-24-013243 · form4.xml · derivative · entry 2

Dinu Raluca · CIK 0001430575 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 26,592

Underlying: Common Stock · 26,592 shares

Expires 2029-03-04

F2 · kind: Distribution of Private Warrants to direct and indirect members of the Sponsor.

SEC source: 0001062993-24-013243 · form4.xml · nonDerivative · entry 1

Dinu Raluca · CIK 0001430575 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 26,592

F1 · kind: Distribution of shares of Common Stock to direct and indirect members of GigAcqusitions5, LLC (the "Sponsor").

SEC source: 0001062993-24-013809 · form4a.xml · derivative · entry 2

Dinu Raluca · CIK 0001430575 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 25,115

Underlying: Common Stock · 25,115 shares

Expires 2029-03-04

F2 · kind: Distribution of Private Warrants to direct and indirect members of the Sponsor.

SEC source: 0001062993-24-013809 · form4a.xml · nonDerivative · entry 1

Dinu Raluca · CIK 0001430575 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 25,115

F1 · kind: Distribution of shares of Common Stock to direct and indirect members of GigAcqusitions5, LLC (the "Sponsor").

SEC source: 0001628280-24-010974 · wk-form4_1710364169.xml · nonDerivative · entry 6

Dinu Raluca · CIK 0001430575 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 523,374

F6 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $2.60 to $2.68, inclusive. The reporting person undertakes to provide to BigBear.ai Holdings, Inc. (the "Company"), any security holder of the Company, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

SEC source: 0001628280-24-010974 · wk-form4_1710364169.xml · nonDerivative · entry 5

Dinu Raluca · CIK 0001430575 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 573,374

F5 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $2.50 to $2.56, inclusive. The reporting person undertakes to provide to BigBear.ai Holdings, Inc. (the "Company"), any security holder of the Company, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

SEC source: 0001628280-24-010974 · wk-form4_1710364169.xml · nonDerivative · entry 4

Dinu Raluca · CIK 0001430575 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 623,374

F4 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $2.35 to $2.41, inclusive. The reporting person undertakes to provide to BigBear.ai Holdings, Inc. (the "Company"), any security holder of the Company, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

SEC source: 0001628280-24-010974 · wk-form4_1710364169.xml · nonDerivative · entry 3

Dinu Raluca · CIK 0001430575 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 673,374

F3 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $2.40 to $2.45, inclusive. The reporting person undertakes to provide to BigBear.ai Holdings, Inc. (the "Company"), any security holder of the Company, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

SEC source: 0001628280-24-010974 · wk-form4_1710364169.xml · nonDerivative · entry 2

Dinu Raluca · CIK 0001430575 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 723,374

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $2.35 to $2.40, inclusive. The reporting person undertakes to provide to BigBear.ai Holdings, Inc. (the "Company"), any security holder of the Company, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

SEC source: 0001628280-24-010974 · wk-form4_1710364169.xml · nonDerivative · entry 1

Dinu Raluca · CIK 0001430575 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 747,298

F1 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $2.50 to $2.57, inclusive. The reporting person undertakes to provide to BigBear.ai Holdings, Inc. (the "Company"), any security holder of the Company, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

SEC source: 0001062993-24-001878 · form4.xml · nonDerivative · entry 2

Dinu Raluca · CIK 0001430575 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 113,905

F2 · shares: Subject to the Reporting Person's continued service to the Company, the Restricted Stock Units ("RSUs") shall vest on January 1, 2025; all RSUs shall immediately vest in the event of a Change of Control (as defined in the UpHealth, Inc. 2021 Equity Incentive Plan) of the Company.

SEC source: 0001628280-23-041721 · wk-form4_1702900660.xml · nonDerivative · entry 1

Dinu Raluca · CIK 0001430575 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 773,374

F1 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $1.92 to $1.93, inclusive. The reporting person undertakes to provide to BigBear.ai Holdings, Inc. (the "Company"), any security holder of the Company, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

SEC source: 0001628280-23-041641 · wk-form4_1702641166.xml · nonDerivative · entry 1

Dinu Raluca · CIK 0001430575 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 786,403

F1 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $1.80 to $1.82, inclusive. The reporting person undertakes to provide to BigBear.ai Holdings, Inc. (the "Company"), any security holder of the Company, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

SEC source: 0001628280-23-040536 · wk-form4_1701691152.xml · derivative · entry 2

Dinu Raluca · CIK 0001430575 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 7,083 shares

Expires 2026-12-07

F2 · price: The price reported in Column 8 is a weighted average price. These warrants were sold in multiple transactions at prices ranging from $0.34 to $0.37, inclusive. The reporting person undertakes to provide to BigBear.ai Holdings, Inc. (the "Company"), any security holder of the Company, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of warrants sold at each separate price within the range set forth in this footnote.

SEC source: 0001628280-23-040536 · wk-form4_1701691152.xml · nonDerivative · entry 1

Dinu Raluca · CIK 0001430575 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 836,403

F1 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $1.90 to $1.97, inclusive. The reporting person undertakes to provide to BigBear.ai Holdings, Inc. (the "Company"), any security holder of the Company, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

SEC source: 0001628280-23-040227 · wk-form4_1701292672.xml · nonDerivative · entry 2

Dinu Raluca · CIK 0001430575 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 871,463

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $1.90 to $1.92, inclusive. The reporting person undertakes to provide to BigBear.ai Holdings, Inc. (the "Company"), any security holder of the Company, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

SEC source: 0001628280-23-040227 · wk-form4_1701292672.xml · nonDerivative · entry 1

Dinu Raluca · CIK 0001430575 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 896,463

F1 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $1.90 to $1.94, inclusive. The reporting person undertakes to provide to BigBear.ai Holdings, Inc. (the "Company"), any security holder of the Company, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

SEC source: 0001628280-23-039826 · wk-form4_1700656775.xml · nonDerivative · entry 1

Dinu Raluca · CIK 0001430575 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 924,463

F1 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $1.81 to $1.87, inclusive. The reporting person undertakes to provide to BigBear.ai Holdings, Inc. (the "Company"), any security holder of the Company, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

F2 · balance_after: The reported amount (i) corrects an understatement of the amount held after a transaction reported on a Form 4 filed by the reporting person on May 24, 2022, June 15, 2022, March 17, 2023, March 21, 2023, and July 5, 2023 (which did not give effect to the grant of 13,000 RSUs that were timely reported in the previous Form 4 filing) and (ii) includes 600 shares of common stock that were part of the 266,600 shares sold on March 17, 2023 but which transaction was inadvertently reported as a sale of 266,000 shares in the Form 4 filed on March 21, 2023.

SEC source: 0001628280-23-024361 · wk-form4_1688597736.xml · nonDerivative · entry 1

Dinu Raluca · CIK 0001430575 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 925,063

F1 · shares: Each restricted stock unit ("RSU") represents a right to receive one share of the issuer's Common Stock, subject to the Reporting Person's continued service through the vesting date. The reported RSUs were granted on July 2, 2023, vest on July 2, 2024, and shall be settled within sixty days of the vesting date.

F2 · balance_after: The reported amount corrects an overstatement of the amount held after a transaction reported on a Form 4 filed by the reporting person on March 21, 2023 (which did not give effect to the sale of 33,400 shares sold and timely reported in the previous Form 4 filing).

SEC source: 0000899243-23-009370 · doc4.xml · nonDerivative · entry 1

Dinu Raluca · CIK 0001430575 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 902,907

F1 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $1.75 to $1.93, inclusive. The reporting person undertakes to provide to BigBear.ai Holdings, Inc. (the "Company"), any security holder of the Company, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

SEC source: 0000899243-23-008985 · doc4.xml · nonDerivative · entry 2

Dinu Raluca · CIK 0001430575 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,135,507

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $1.70 to $1.73, inclusive.