GTHP

Guided Therapeutics INC

Insider trading activity for Guided Therapeutics INC, straight from SEC Form 4 filings. Net figures below count open-market buys and sales only — grants, option exercises and tax withholding are excluded because they are compensation, not decisions to trade.

Past 3 months

net buying

Bought(0 · 0 insiders): $0
Sold(0 · 0 insiders): $0

Past 6 months

net buying

Bought(0 · 0 insiders): $0
Sold(0 · 0 insiders): $0

Past 12 months

net buying

Bought(0 · 0 insiders): $0
Sold(0 · 0 insiders): $0

Transaction history

The 77 most recent Form 4 transactions.

Open in screener →

Insider transactions, newest first: date, security, transaction type, size and a link to the filing each row came from.
Date	Insider	Role	Type	Shares	Price	Value	Δ Own	Filing
Mar 31	Imhoff John E	Director, 10% Owner	CCONV◆	157,417	$0.07	$11K	—	Open the original filing on SEC.gov
Mar 31	Imhoff John E	Director, 10% Owner	CCONV	157,417	$0.07	$11K	+0.8%	Open the original filing on SEC.gov
Mar 26	Imhoff John E	Director, 10% Owner	JOTHER	40,000	—	—	+0.2%	Open the original filing on SEC.gov
Mar 26	Imhoff John E	Director, 10% Owner	JOTHER	10	—	—	-100.0%	Open the original filing on SEC.gov
Mar 26	Imhoff John E	Director, 10% Owner	JOTHER	2,157	—	—	+<0.1%	Open the original filing on SEC.gov
Mar 26	Blumberg Richard P.	Director, 10% Owner	JOTHER	352,000	—	—	+3.5%	Open the original filing on SEC.gov
Mar 26	Blumberg Richard P.	Director, 10% Owner	JOTHER	88	—	—	-100.0%	Open the original filing on SEC.gov
Mar 26	Blumberg Richard P.	Director, 10% Owner	JOTHER	19,038	—	—	+0.2%	Open the original filing on SEC.gov
Mar 26	Blumberg Richard P.	Director, 10% Owner	JOTHER	1M	—	—	+11.6%	Open the original filing on SEC.gov
Mar 26	Blumberg Richard P.	Director, 10% Owner	JOTHER	260	—	—	-100.0%	Open the original filing on SEC.gov
Mar 26	Blumberg Richard P.	Director, 10% Owner	JOTHER	56,093	—	—	+0.6%	Open the original filing on SEC.gov
Mar 10	Grujic Alan	Director	AGRANT◆	110,000	—	—	—	Open the original filing on SEC.gov
Mar 10	Imhoff John E	Director, 10% Owner	AGRANT◆	110,000	—	—	—	Open the original filing on SEC.gov
Mar 10	James Michael C	Director	AGRANT◆	110,000	—	—	—	Open the original filing on SEC.gov
Mar 10	Blumberg Richard P.	Director, 10% Owner	AGRANT◆	110,000	—	—	—	Open the original filing on SEC.gov
Mar 1	Blumberg Richard P.	Director, 10% Owner	HEXPL◆	900,000	$0.3	$270K	—	Open the original filing on SEC.gov
Feb 27	Imhoff John E	Director, 10% Owner	CCONV◆	156,086	$0.07	$10.9K	—	Open the original filing on SEC.gov
Feb 27	Imhoff John E	Director, 10% Owner	CCONV	156,086	$0.07	$10.9K	+0.8%	Open the original filing on SEC.gov
Feb 27	Imhoff John E	Director, 10% Owner	JOTHER	400,000	—	—	+1.9%	Open the original filing on SEC.gov
Feb 27	Imhoff John E	Director, 10% Owner	JOTHER	100	—	—	-100.0%	Open the original filing on SEC.gov
Feb 25	James Michael C	Director	XXITM◆	100,000	—	—	—	Open the original filing on SEC.gov
Feb 25	James Michael C	Director	JOTHER◆	100,000	—	—	—	Open the original filing on SEC.gov
Feb 25	James Michael C	Director	JOTHER◆	100,000	—	—	—	Open the original filing on SEC.gov
Feb 25	James Michael C	Director	JOTHER◆	100,000	—	—	—	Open the original filing on SEC.gov
Feb 25	James Michael C	Director	JOTHER◆	100,000	—	—	—	Open the original filing on SEC.gov
Feb 25	James Michael C	Director	XXITM	100,000	—	—	+18.1%	Open the original filing on SEC.gov
Feb 25	Imhoff John E	Director, 10% Owner	XXITM◆	500,000	—	—	—	Open the original filing on SEC.gov
Feb 25	Imhoff John E	Director, 10% Owner	JOTHER◆	500,000	—	—	—	Open the original filing on SEC.gov
Feb 25	Imhoff John E	Director, 10% Owner	JOTHER◆	500,000	—	—	—	Open the original filing on SEC.gov
Feb 25	Imhoff John E	Director, 10% Owner	JOTHER◆	500,000	—	—	—	Open the original filing on SEC.gov
Feb 25	Imhoff John E	Director, 10% Owner	JOTHER◆	500,000	—	—	—	Open the original filing on SEC.gov
Feb 25	Imhoff John E	Director, 10% Owner	XXITM	500,000	—	—	+2.5%	Open the original filing on SEC.gov
Feb 25	Blumberg Richard P.	Director, 10% Owner	MEXER◆	1M	$0.2	$200K	—	Open the original filing on SEC.gov
Feb 25	Blumberg Richard P.	Director, 10% Owner	AGRANT◆	1M	—	—	—	Open the original filing on SEC.gov
Feb 25	Blumberg Richard P.	Director, 10% Owner	DTOISS◆	1M	—	—	—	Open the original filing on SEC.gov
Feb 25	Blumberg Richard P.	Director, 10% Owner	AGRANT◆	1M	—	—	—	Open the original filing on SEC.gov
Feb 25	Blumberg Richard P.	Director, 10% Owner	DTOISS◆	1M	—	—	—	Open the original filing on SEC.gov
Feb 25	Blumberg Richard P.	Director, 10% Owner	MEXER	1M	—	—	+12.6%	Open the original filing on SEC.gov
Feb 2	Imhoff John E	Director, 10% Owner	CCONV◆	312,720	—	—	—	Open the original filing on SEC.gov
Feb 2	Imhoff John E	Director, 10% Owner	CCONV	312,720	$0.07	$21.9K	+1.6%	Open the original filing on SEC.gov
Jan 5	Imhoff John E	Director, 10% Owner	JOTHER	25,338	—	—	+0.1%	Open the original filing on SEC.gov
Dec 18, 2025	Imhoff John E	Director, 10% Owner	CCONV◆	195,460	—	—	—	Open the original filing on SEC.gov
Dec 18, 2025	Imhoff John E	Director, 10% Owner	CCONV	195,460	$0.07	$13.7K	+1.0%	Open the original filing on SEC.gov
Aug 29, 2025	Grujic Alan	Director	PDBUY◆	152,108	—	—	—	Open the original filing on SEC.gov
Aug 29, 2025	Grujic Alan	Director	PBUY	152,108	—	—	+9.1%	Open the original filing on SEC.gov
Aug 29, 2025	Imhoff John E	Director, 10% Owner	PDBUY◆	166,667	—	—	—	Open the original filing on SEC.gov
Aug 29, 2025	Imhoff John E	Director, 10% Owner	PBUY	166,667	$0.18	$30K	+0.9%	Open the original filing on SEC.gov
Aug 29, 2025	James Michael C	Director	PDBUY◆	27,778	—	—	—	Open the original filing on SEC.gov
Aug 29, 2025	James Michael C	Director	PBUY	27,778	$0.18	$5K	+5.3%	Open the original filing on SEC.gov
Aug 21, 2025	Grujic Alan	Director	JOTHER	200,000	—	—	+13.7%	Open the original filing on SEC.gov
Aug 21, 2025	Grujic Alan	Director	JOTHER	50	—	—	-100.0%	Open the original filing on SEC.gov
Aug 21, 2025	Grujic Alan	Director	JOTHER	17,408	—	—	+1.2%	Open the original filing on SEC.gov
Aug 21, 2025	Imhoff John E	Director, 10% Owner	JOTHER	1.2M	—	—	+6.6%	Open the original filing on SEC.gov
Aug 21, 2025	Imhoff John E	Director, 10% Owner	JOTHER	300	—	—	-75.0%	Open the original filing on SEC.gov
Aug 21, 2025	Imhoff John E	Director, 10% Owner	JOTHER	104,448	—	—	+0.6%	Open the original filing on SEC.gov
Aug 21, 2025	Blumberg Richard P.	Director, 10% Owner	JOTHER	932,000	—	—	+13.3%	Open the original filing on SEC.gov
Aug 21, 2025	Blumberg Richard P.	Director, 10% Owner	JOTHER	233	—	—	-100.0%	Open the original filing on SEC.gov
Aug 21, 2025	Blumberg Richard P.	Director, 10% Owner	JOTHER	81,121	—	—	+1.2%	Open the original filing on SEC.gov
Jun 3, 2025	Grujic Alan	Director	AGRANT◆	110,000	—	—	—	Open the original filing on SEC.gov
Jun 3, 2025	Imhoff John E	Director	AGRANT◆	110,000	—	—	—	Open the original filing on SEC.gov
Jun 3, 2025	James Michael C	Director	AGRANT◆	110,000	—	—	—	Open the original filing on SEC.gov
Jun 3, 2025	Blumberg Richard P.	Director, 10% Owner	AGRANT◆	110,000	—	—	—	Open the original filing on SEC.gov
Apr 10, 2025	Imhoff John E	Director, 10% Owner	JOTHER↺	6,365	—	—	+<0.1%	Open the original filing on SEC.gov
Apr 10, 2025	Blumberg Richard P.	Director, 10% Owner	JOTHER	55,853	—	—	+0.8%	Open the original filing on SEC.gov
Apr 10, 2025	Blumberg Richard P.	Director, 10% Owner	JOTHER	165,481	—	—	+2.5%	Open the original filing on SEC.gov
Mar 18, 2025	Imhoff John E	Director, 10% Owner	PDBUY◆↺	263,069	—	—	—	Open the original filing on SEC.gov
Mar 18, 2025	Imhoff John E	Director, 10% Owner	PDBUY◆↺	1M	—	—	—	Open the original filing on SEC.gov
Mar 18, 2025	Imhoff John E	Director, 10% Owner	PBUY↺	263,069	$0.1	$26.3K	+1.5%	Open the original filing on SEC.gov
Mar 18, 2025	Imhoff John E	Director, 10% Owner	PBUY↺	1M	$0.1	$100K	+6.0%	Open the original filing on SEC.gov
Mar 13, 2025	Imhoff John E	Director, 10% Owner	PBUY↺	150	—	—	+60.0%	Open the original filing on SEC.gov
Mar 11, 2025	Imhoff John E	Director, 10% Owner	JOTHER↺	2.3M	$0.1266	$286K	+15.6%	Open the original filing on SEC.gov
Mar 11, 2025	Imhoff John E	Director, 10% Owner	JOTHER↺	286	—	—	-100.0%	Open the original filing on SEC.gov
Mar 7, 2025	Imhoff John E	Director, 10% Owner	PBUY↺	286	—	—	—	Open the original filing on SEC.gov
Mar 6, 2025	Imhoff John E	Director, 10% Owner	JOTHER↺	4.8M	$0.5	$2.4M	+49.7%	Open the original filing on SEC.gov
Mar 6, 2025	Imhoff John E	Director, 10% Owner	JOTHER↺	2,400.75	—	—	-100.0%	Open the original filing on SEC.gov
Mar 6, 2025	Imhoff John E	Director, 10% Owner	JOTHER↺	900,000	—	—	+10.3%	Open the original filing on SEC.gov
Mar 6, 2025	Imhoff John E	Director, 10% Owner	JOTHER↺	300	—	—	-100.0%	Open the original filing on SEC.gov

CCONV◆$11K

Imhoff John E · Director, 10%…Mar 31

157,417 sh @ $0.07

CCONV$11K

Imhoff John E · Director, 10%…Mar 31

157,417 sh @ $0.07 · +0.8% own

JOTHER—

Imhoff John E · Director, 10%…Mar 26

40,000 sh · +0.2% own

JOTHER—

Imhoff John E · Director, 10%…Mar 26

10 sh · -100.0% own

JOTHER—

Imhoff John E · Director, 10%…Mar 26

2,157 sh · +<0.1% own

JOTHER—

Blumberg Richard P. · Director, 10%…Mar 26

352,000 sh · +3.5% own

JOTHER—

Blumberg Richard P. · Director, 10%…Mar 26

88 sh · -100.0% own

JOTHER—

Blumberg Richard P. · Director, 10%…Mar 26

19,038 sh · +0.2% own

JOTHER—

Blumberg Richard P. · Director, 10%…Mar 26

1M sh · +11.6% own

JOTHER—

Blumberg Richard P. · Director, 10%…Mar 26

260 sh · -100.0% own

JOTHER—

Blumberg Richard P. · Director, 10%…Mar 26

56,093 sh · +0.6% own

AGRANT◆—

Grujic Alan · DirectorMar 10

110,000 sh

AGRANT◆—

Imhoff John E · Director, 10%…Mar 10

110,000 sh

AGRANT◆—

James Michael C · DirectorMar 10

110,000 sh

AGRANT◆—

Blumberg Richard P. · Director, 10%…Mar 10

110,000 sh

HEXPL◆$270K

Blumberg Richard P. · Director, 10%…Mar 1

900,000 sh @ $0.3

CCONV◆$10.9K

Imhoff John E · Director, 10%…Feb 27

156,086 sh @ $0.07

CCONV$10.9K

Imhoff John E · Director, 10%…Feb 27

156,086 sh @ $0.07 · +0.8% own

JOTHER—

Imhoff John E · Director, 10%…Feb 27

400,000 sh · +1.9% own

JOTHER—

Imhoff John E · Director, 10%…Feb 27

100 sh · -100.0% own

XXITM◆—

James Michael C · DirectorFeb 25

100,000 sh

JOTHER◆—

James Michael C · DirectorFeb 25

100,000 sh

JOTHER◆—

James Michael C · DirectorFeb 25

100,000 sh

JOTHER◆—

James Michael C · DirectorFeb 25

100,000 sh

JOTHER◆—

James Michael C · DirectorFeb 25

100,000 sh

XXITM—

James Michael C · DirectorFeb 25

100,000 sh · +18.1% own

XXITM◆—

Imhoff John E · Director, 10%…Feb 25

500,000 sh

JOTHER◆—

Imhoff John E · Director, 10%…Feb 25

500,000 sh

JOTHER◆—

Imhoff John E · Director, 10%…Feb 25

500,000 sh

JOTHER◆—

Imhoff John E · Director, 10%…Feb 25

500,000 sh

JOTHER◆—

Imhoff John E · Director, 10%…Feb 25

500,000 sh

XXITM—

Imhoff John E · Director, 10%…Feb 25

500,000 sh · +2.5% own

MEXER◆$200K

Blumberg Richard P. · Director, 10%…Feb 25

1M sh @ $0.2

AGRANT◆—

Blumberg Richard P. · Director, 10%…Feb 25

1M sh

DTOISS◆—

Blumberg Richard P. · Director, 10%…Feb 25

1M sh

AGRANT◆—

Blumberg Richard P. · Director, 10%…Feb 25

1M sh

DTOISS◆—

Blumberg Richard P. · Director, 10%…Feb 25

1M sh

MEXER—

Blumberg Richard P. · Director, 10%…Feb 25

1M sh · +12.6% own

CCONV◆—

Imhoff John E · Director, 10%…Feb 2

312,720 sh

CCONV$21.9K

Imhoff John E · Director, 10%…Feb 2

312,720 sh @ $0.07 · +1.6% own

JOTHER—

Imhoff John E · Director, 10%…Jan 5

25,338 sh · +0.1% own

CCONV◆—

Imhoff John E · Director, 10%…Dec 18, 2025

195,460 sh

CCONV$13.7K

Imhoff John E · Director, 10%…Dec 18, 2025

195,460 sh @ $0.07 · +1.0% own

PDBUY◆—

Grujic Alan · DirectorAug 29, 2025

152,108 sh

PBUY—

Grujic Alan · DirectorAug 29, 2025

152,108 sh · +9.1% own

PDBUY◆—

Imhoff John E · Director, 10%…Aug 29, 2025

166,667 sh

PBUY$30K

Imhoff John E · Director, 10%…Aug 29, 2025

166,667 sh @ $0.18 · +0.9% own

PDBUY◆—

James Michael C · DirectorAug 29, 2025

27,778 sh

PBUY$5K

James Michael C · DirectorAug 29, 2025

27,778 sh @ $0.18 · +5.3% own

JOTHER—

Grujic Alan · DirectorAug 21, 2025

200,000 sh · +13.7% own

JOTHER—

Grujic Alan · DirectorAug 21, 2025

50 sh · -100.0% own

JOTHER—

Grujic Alan · DirectorAug 21, 2025

17,408 sh · +1.2% own

JOTHER—

Imhoff John E · Director, 10%…Aug 21, 2025

1.2M sh · +6.6% own

JOTHER—

Imhoff John E · Director, 10%…Aug 21, 2025

300 sh · -75.0% own

JOTHER—

Imhoff John E · Director, 10%…Aug 21, 2025

104,448 sh · +0.6% own

JOTHER—

Blumberg Richard P. · Director, 10%…Aug 21, 2025

932,000 sh · +13.3% own

JOTHER—

Blumberg Richard P. · Director, 10%…Aug 21, 2025

233 sh · -100.0% own

JOTHER—

Blumberg Richard P. · Director, 10%…Aug 21, 2025

81,121 sh · +1.2% own

AGRANT◆—

Grujic Alan · DirectorJun 3, 2025

110,000 sh

AGRANT◆—

Imhoff John E · DirectorJun 3, 2025

110,000 sh

AGRANT◆—

James Michael C · DirectorJun 3, 2025

110,000 sh

AGRANT◆—

Blumberg Richard P. · Director, 10%…Jun 3, 2025

110,000 sh

JOTHER↺—

Imhoff John E · Director, 10%…Apr 10, 2025

6,365 sh · +<0.1% own

JOTHER—

Blumberg Richard P. · Director, 10%…Apr 10, 2025

55,853 sh · +0.8% own

JOTHER—

Blumberg Richard P. · Director, 10%…Apr 10, 2025

165,481 sh · +2.5% own

PDBUY◆↺—

Imhoff John E · Director, 10%…Mar 18, 2025

263,069 sh

PDBUY◆↺—

Imhoff John E · Director, 10%…Mar 18, 2025

1M sh

PBUY↺$26.3K

Imhoff John E · Director, 10%…Mar 18, 2025

263,069 sh @ $0.1 · +1.5% own

PBUY↺$100K

Imhoff John E · Director, 10%…Mar 18, 2025

1M sh @ $0.1 · +6.0% own

PBUY↺—

Imhoff John E · Director, 10%…Mar 13, 2025

150 sh · +60.0% own

JOTHER↺$286K

Imhoff John E · Director, 10%…Mar 11, 2025

2.3M sh @ $0.1266 · +15.6% own

JOTHER↺—

Imhoff John E · Director, 10%…Mar 11, 2025

286 sh · -100.0% own

PBUY↺—

Imhoff John E · Director, 10%…Mar 7, 2025

286 sh

JOTHER↺$2.4M

Imhoff John E · Director, 10%…Mar 6, 2025

4.8M sh @ $0.5 · +49.7% own

JOTHER↺—

Imhoff John E · Director, 10%…Mar 6, 2025

2,400.75 sh · -100.0% own

JOTHER↺—

Imhoff John E · Director, 10%…Mar 6, 2025

900,000 sh · +10.3% own

JOTHER↺—

Imhoff John E · Director, 10%…Mar 6, 2025

300 sh · -100.0% own

Filing record

How quickly insiders here report their trades. Section 16 allows two business days from the transaction.

13 of 13 filings we hold were filed after the two-business-day deadline. The furthest past the deadline was 99 business days late.

Form 4 filings made after the two-business-day deadline, with the transaction date, the filing date and the number of business days between them.
Traded	Filed	Insider	Past deadline	Largest line	Source
Apr 10, 2025	Sep 4, 2025	Blumberg Richard P.Director, 10% Owner	99days · about 5 months	—	Filing ↗
Dec 18, 2025	Mar 11	Imhoff John EDirector, 10% Owner	53days · about 3 months	$21.9K	Filing ↗
Feb 25	May 4	Blumberg Richard P.Director, 10% Owner	46days · about 2 months	$270K	Filing ↗
Mar 10	Apr 6	James Michael CDirector	17days	—	Filing ↗
Mar 10	Apr 6	Grujic AlanDirector	17days	—	Filing ↗

Blumberg Richard P.Director, 10% Owner

99days · about 5 months

Traded Apr 10, 2025 · filed Sep 4, 2025Filing ↗

Imhoff John EDirector, 10% Owner

53days · about 3 months

Traded Dec 18, 2025 · filed Mar 11Filing ↗

Blumberg Richard P.Director, 10% Owner

46days · about 2 months

Traded Feb 25 · filed May 4Filing ↗

James Michael CDirector

17days

Traded Mar 10 · filed Apr 6Filing ↗

Grujic AlanDirector

17days

Traded Mar 10 · filed Apr 6Filing ↗

Counted in business days from the transaction date, or the deemed execution date where the filing reports one, excluding weekends and federal holidays. How this is measured · All late filings

Insiders at this company

Everyone who has filed a Form 4 for this issuer.

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