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OTC · CIK 0000924515

GTHP GUIDED THERAPEUTICS INC

Insider trading from SEC Form 4. Last filing May 5, 2026. Close $0.18 on Oct 9, 2026, +13% from the 52-week low and -67% from the high.

GUIDED THERAPEUTICS INC (GTHP) has 17 SEC Form 4 filings on file from 4 insiders, the latest filed on May 5, 2026. No insider bought or sold on the open market in the last 90 days; rows filed in that time are grants, exercises, tax withholding and other transactions that carry no view on the price.

5 open-market trades have been scored at GTHP. The newest: Michael C James (director) bought $5,000 of stock on Aug 29, 2025, filed Sep 5, 2025, scored 26 (weak). The largest of the 5 shown: John E Imhoff (director and 10% owner) bought $126k on Mar 18, 2025, scored 37 (weak). 2 insiders bought within 14 days of each other around Aug 29, 2025.

GTHP closed at $0.18 on Oct 9, 2026, 13% above its 52-week low and 67% below its 52-week high.

Last 90 days

Net insider value
$0
no open-market trades
Buys
0
$0 by 0 insiders
Sells
0
$0 by 0 insiders
Insiders on file
4
with a Form 4 at this company

Price and insider trades, last year

GTHPOct 9, 2026 · close 0.18

Daily candles, adjusted for splits and dividends. Green arrows are insider buys, red are sells, sized by value. Click a marked bar to open the signal.Charts by TradingView Lightweight Charts™

Signals

Open-market buys and sells at GUIDED THERAPEUTICS INC, scored.

ScoreInsiderValueHoldingsPrice contextFiled
26WeakMichael C James
director
buy
$5,000
27,778 shares
+5%-
23WeakJohn E Imhoff
director, owner
buy
$30k
166,667 shares
+1%-
37WeakJohn E Imhoff
director, owner
buy
$126k
1,263,069 shares
+8%-
37WeakJohn E Imhoff
director, owner
buy
$126k
1,263,069 shares
+8%-
39WeakMichael C James
director
buy
$41k
412,945 shares
+366%-

Transactions

The newest 50 of 91 rows filed, every code.

DateInsiderTransactionSharesPriceValueHoldings afterFiled
Feb 25, 2026Richard P. Blumberg
director, owner
MOption exercise
Common Stock
+1,000,000--8,924,180May 5, 2026
Mar 26, 2026Richard P. Blumberg
director, owner
JOther
Common Stock
+56,093--8,980,273May 5, 2026
Mar 26, 2026Richard P. Blumberg
director, owner
JOther
Preferred Series F Stock
-260--0May 5, 2026
Mar 26, 2026Richard P. Blumberg
director, owner
JOther
Common Stock
+1,040,000--10,020,273May 5, 2026
Mar 26, 2026Richard P. Blumberg
director, owner
JOther
Common Stock
+19,038--10,039,311May 5, 2026
Mar 26, 2026Richard P. Blumberg
director, owner
JOther
Preferred Series F-2 Stock
-88--0May 5, 2026
Mar 26, 2026Richard P. Blumberg
director, owner
JOther
Common Stock
+352,000--10,391,311May 5, 2026
Feb 25, 2026Richard P. Blumberg
director, owner
DDisposition to issuer
Warrantsderivative
-1,000,000--0May 5, 2026
Feb 25, 2026Richard P. Blumberg
director, owner
AGrant or award
Warrantsderivative
+1,000,000--1,000,000May 5, 2026
Feb 25, 2026Richard P. Blumberg
director, owner
DDisposition to issuer
Warrantsderivative
-1,000,000--0May 5, 2026
Feb 25, 2026Richard P. Blumberg
director, owner
AGrant or award
Warrantsderivative
+1,000,000--1,000,000May 5, 2026
Feb 25, 2026Richard P. Blumberg
director, owner
MOption exercise
Warrantsderivative
-1,000,000$0.20$200k0May 5, 2026
Mar 1, 2026Richard P. Blumberg
director, owner
HExpiration of long derivative
Warrantsderivative
-900,000$0.30$270k2,700,000May 5, 2026
Mar 10, 2026Richard P. Blumberg
director, owner
AGrant or award
Stock Optionsderivative
+110,000$0.00$0110,000May 5, 2026
Dec 18, 2025John E Imhoff
director, owner
CConversion
Common Stock
+195,460$0.07$14k19,658,955Mar 12, 2026
Jan 5, 2026John E Imhoff
director, owner
JOther
Common Stock
+25,338--19,684,293Mar 12, 2026
Feb 2, 2026John E Imhoff
director, owner
CConversion
Common Stock
+312,720$0.07$22k19,997,013Mar 12, 2026
Feb 25, 2026John E Imhoff
director, owner
XIn-the-money exercise
Common Stock
+500,000--20,497,013Mar 12, 2026
Feb 27, 2026John E Imhoff
director, owner
JOther
Preferred Series E Stock
-100--0Mar 12, 2026
Feb 27, 2026John E Imhoff
director, owner
JOther
Common Stock
+400,000--20,897,013Mar 12, 2026
Feb 27, 2026John E Imhoff
director, owner
CConversion
Common Stock
+156,086$0.07$11k21,053,099Mar 12, 2026
Dec 18, 2025John E Imhoff
director, owner
CConversion
Convertible Promissory Notederivative
-195,460--150,000Mar 12, 2026
Feb 2, 2026John E Imhoff
director, owner
CConversion
Convertible Promissory Notederivative
-312,720--130,000Mar 12, 2026
Feb 25, 2026John E Imhoff
director, owner
JOther
Warrantsderivative
-500,000--0Mar 12, 2026
Feb 25, 2026John E Imhoff
director, owner
JOther
Warrantsderivative
+500,000--500,000Mar 12, 2026
Feb 25, 2026John E Imhoff
director, owner
JOther
Warrantsderivative
-500,000--0Mar 12, 2026
Feb 25, 2026John E Imhoff
director, owner
JOther
Warrantsderivative
+500,000--500,000Mar 12, 2026
Feb 25, 2026John E Imhoff
director, owner
XIn-the-money exercise
Warrantsderivative
-500,000--0Mar 12, 2026
Feb 27, 2026John E Imhoff
director, owner
CConversion
Convertible Promissory Notederivative
-156,086$0.07$11k120,000Mar 12, 2026
Feb 25, 2026Michael C James
director
XIn-the-money exercise
Common Stock
+100,000--653,495Mar 4, 2026
Feb 25, 2026Michael C James
director
JOther
Warrantsderivative
-100,000--0Mar 4, 2026
Feb 25, 2026Michael C James
director
JOther
Warrantsderivative
+100,000--100,000Mar 4, 2026
Feb 25, 2026Michael C James
director
JOther
Warrantsderivative
-100,000--0Mar 4, 2026
Feb 25, 2026Michael C James
director
JOther
Warrantsderivative
+100,000--152,778Mar 4, 2026
Feb 25, 2026Michael C James
director
XIn-the-money exercise
Warrantsderivative
-100,000--52,778Mar 4, 2026
Aug 29, 2025Michael C James
director
POpen-market purchase
Common Stock
+27,778$0.18$5,000553,495Sep 5, 2025
Aug 21, 2025John E Imhoff
director, owner
JOther
Common Stock
+104,448--18,096,828Sep 5, 2025
Apr 10, 2025Richard P. Blumberg
director, owner
JOther
Common Stock
+165,481--6,855,206Sep 5, 2025
Aug 21, 2025Alan Grujic
director
JOther
Common Stock
+17,408--1,465,433Sep 5, 2025
Aug 29, 2025Michael C James
director
POpen-market purchase
Warrantsderivative
+27,778--52,778Sep 5, 2025
Aug 21, 2025John E Imhoff
director, owner
JOther
Preferred Series E Stock
-300--100Sep 5, 2025
Apr 10, 2025Richard P. Blumberg
director, owner
JOther
Common Stock
+55,853--6,911,059Sep 5, 2025
Aug 21, 2025Alan Grujic
director
JOther
Preferred Series E Stock
-50--0Sep 5, 2025
Aug 21, 2025Richard P. Blumberg
director, owner
JOther
Common Stock
+81,121--6,992,180Sep 5, 2025
Aug 21, 2025John E Imhoff
director, owner
JOther
Common Stock
+1,200,000--19,296,828Sep 5, 2025
Aug 21, 2025Alan Grujic
director
JOther
Common Stock
+200,000--1,665,433Sep 5, 2025
Aug 29, 2025John E Imhoff
director, owner
POpen-market purchase
Common Stock
+166,667$0.18$30k19,463,495Sep 5, 2025
Aug 29, 2025Alan Grujic
director
POpen-market purchase
Common Stock
+152,108--1,817,541Sep 5, 2025
Aug 21, 2025Richard P. Blumberg
director, owner
JOther
Preferred Series E Stock
-233--0Sep 5, 2025
Aug 29, 2025John E Imhoff
director, owner
POpen-market purchase
Warrantsderivative
+166,667--191,667Sep 5, 2025
50 of 91 rows shown.

Insiders

Everyone who has filed a Form 4 here.

Questions about GTHP

Answered from the filings on this page, as of the latest one.

Are insiders buying GTHP?

No. In the last 90 days no insider at GUIDED THERAPEUTICS INC bought or sold shares on the open market according to SEC Form 4 filings. The rows on file from that period are grants, exercises, tax withholding or other transactions, which carry no view on the price.

Who was the last insider to trade GTHP on the open market?

Michael C James (director) bought $5,000 of GTHP on Aug 29, 2025 and filed the Form 4 on Sep 5, 2025. InsiderTell scored 26 (weak), with 2 insiders on the same side within 14 days.

How many insiders file Form 4 at GUIDED THERAPEUTICS INC?

4 people have filed a Form 4 at GUIDED THERAPEUTICS INC, among them Richard P. Blumberg (director and 10% owner), Alan Grujic (director), John E Imhoff (director and 10% owner). Officers, directors and holders of more than 10% of a share class must report their trades within two business days.

Not investment advice. Scores and forward returns are decision support built from public SEC filings and past prices; they describe what happened after comparable filings, not what will happen after this one. Do your own research and size your risk.

GTHP insider trading: GUIDED THERAPEUTICS INC | InsiderTell