John E. Imhoff - 30 Sep 2026 Form 4 Insider Report for GUIDED THERAPEUTICS INC (GTHP)

Reporting relationship: Director, 10%+ Owner
Issuer ticker: GTHP
Reported as of: 30 Sep 2026
Net transaction value: $0
SEC form: 4
Accepted by SEC: 27 Oct 2026, 16:27:58 UTC
Prior SEC filing: 07 Apr 2026
Source filing: View source filing
Reporting owner signature: /s/ John E. Imhoff

Filing notes and source

Key filing fact

John E. Imhoff filed Form 4 for GUIDED THERAPEUTICS INC (GTHP) on 27 Oct 2026.

Key facts

This page summarizes John E. Imhoff's Form 4 filing for GUIDED THERAPEUTICS INC (GTHP).
2 reported transactions and 1 derivative row are listed below.
Accepted by SEC: 27 Oct 2026, 16:27.

Change

Previous filing in this sequence was filed on 07 Apr 2026.
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 0001348439 Primary reporting owner

Imhoff John E

Relationship: Director, 10%+ Owner
Address: 5835 PEACHTREE CORNERS EAST, SUITE B, PEACHTREE CORNERS
Signature: /s/ John E. Imhoff
Signature date: 27 Oct 2026

Reported non-derivative transactions

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

GTHP transaction

Common Stock

Conversion of derivative security

Transaction value
Shares: +1,650,215
Change %: +7.8%
Price: $0.0700^*
Shares after: 22,902,888
Date: 30 Sep 2026
Ownership: Direct
Footnotes: F1

Reported derivative securities

Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.

GTHP transaction Derivative

Convertible Promissory Note

Conversion of derivative security

Transaction value
Shares: -1,650,215
Change %: -100%
Price
Shares after: 0
Date: 30 Sep 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 1,650,215
Exercise price: $0.0700
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 1 footnote

Footnote F1

On September 30, 2026, Dr. Imhoff converted $115,515.07 outstanding under a September 25, 2025 Convertible Promissory Note, consisting of $110,000 of principal and $5,515.07 of accrued interest, into 1,650,215 shares of common stock at a conversion price of $0.07 per share. The note was convertible at the holder's election upon nonpayment of a scheduled monthly installment of $10,000 plus accrued interest, payable beginning November 30, 2025. By mutual agreement with the Company, the amount converted included $60,000 of deferred installments due April through September 2026 and $50,000 of installments scheduled for October 2026 through February 2027. Following the conversion, the note has been paid in full.