Dr. Raluca Dinu - 20 Mar 2026 Form 4 Insider Report for QT IMAGING HOLDINGS, INC. (QTI)

Reporting relationship: Chief Executive Officer, Director
Issuer ticker: QTI
Reported as of: 20 Mar 2026
Net transaction value: $0
SEC form: 4
Accepted by SEC: 24 Mar 2026, 21:30:54 UTC
Prior SEC filing: 02 Sep 2025
Source filing: View source filing
Reporting owner signature: /s/ Dr. Raluca Dinu

Key filing fact

Dr. Raluca Dinu filed Form 4 for QT IMAGING HOLDINGS, INC. (QTI) on 24 Mar 2026.

Key facts

This page summarizes Dr. Raluca Dinu's Form 4 filing for QT IMAGING HOLDINGS, INC. (QTI).
3 reported transactions and 0 derivative rows are listed below.
Accepted by SEC: 24 Mar 2026, 21:30.

Change

Previous filing in this sequence was filed on 02 Sep 2025.
Current net transaction value: $0.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001430575 Primary reporting owner

Dinu Raluca

Relationship: Chief Executive Officer, Director
Address: C/O QT IMAGING HOLDINGS, INC., 3 HAMILTON LANDING SUITE 160, NOVATO
Signature: /s/ Dr. Raluca Dinu
Signature date: 24 Mar 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

QTI transaction

Common Stock

Award

Transaction value
Shares: +3,500
Change %: +0.9%
Price: $0.000000^*
Shares after: 392,845
Date: 20 Mar 2026
Ownership: Direct
Footnotes: F2

QTI transaction

Common Stock

Award

Transaction value
Shares: +500,000
Change %: +127%
Price: $0.000000^*
Shares after: 892,845
Date: 20 Mar 2026
Ownership: Direct
Footnotes: F3

QTI transaction

Common Stock

Award

Transaction value
Shares: +16,000
Change %: +1.8%
Price: $0.000000^*
Shares after: 908,845
Date: 20 Mar 2026
Ownership: Direct
Footnotes: F4

QTI holding

Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 389,345
Date: 20 Mar 2026
Ownership: Direct
Footnotes: F1

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 4 footnotes

Footnote F1

The number of shares beneficially owned reflects the 3-for-1 reverse stock split effected October 23, 2025.

Footnote F2

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.

Footnote F3

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.

Footnote F4

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.