QMCO

Quantum Corp /de/

Insider trading activity for Quantum Corp /de/, 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

-$15.9K

net selling

Bought(0 · 0 insiders): $0
Sold(1 · 1 insiders): $15.9K

Past 6 months

-$84.1K

net selling

Bought(0 · 0 insiders): $0
Sold(3 · 3 insiders): $84.1K

Past 12 months

-$84.7K

net selling

Bought(0 · 0 insiders): $0
Sold(4 · 3 insiders): $84.7K

Transaction history

The 55 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
Oct 1	White Yue Zhou	Director	AGRANT	12,000	—	—	+29.2%	Open the original filing on SEC.gov
Oct 1	Blevins Tony J	Director	AGRANT	12,000	—	—	+92.3%	Open the original filing on SEC.gov
Oct 1	Tracy John R.	Director	AGRANT	12,000	—	—	+44.4%	Open the original filing on SEC.gov
Oct 1	Fichthorn John	Director, 10% Owner	AGRANT	12,000	—	—	+41.5%	Open the original filing on SEC.gov
Oct 1	Clancy James C	Chief Operating Officer	AGRANT◆	400,000	—	—	—	Open the original filing on SEC.gov
Oct 1	Clancy James C	Chief Operating Officer	AGRANT	150,000	—	—	+1,154%	Open the original filing on SEC.gov
Oct 1	Meyrath Hugues	President & CEO	AGRANT◆	500,000	—	—	—	Open the original filing on SEC.gov
Oct 1	Patel Hiral	Chief Accounting Officer	AGRANT	50,000	—	—	—	Open the original filing on SEC.gov
Oct 1	Jaworksi Don	Director	AGRANT	12,000	—	—	+30.3%	Open the original filing on SEC.gov
Oct 1	Craythorne Anthony	Chief Revenue Officer	AGRANT◆	200,000	—	—	—	Open the original filing on SEC.gov
Aug 3	Craythorne Anthony	Chief Revenue Officer	SSELL	1,478	$10.73	$15.9K	-9.8%	Open the original filing on SEC.gov
Jul 2	Nash Laura A.	Chief Accounting Officer	SSELL	260	$10.51	$2.7K	-2.4%	Open the original filing on SEC.gov
Jul 2	Meyrath Hugues	President & CEO	SSELL	6,232	$10.51	$65.5K	-5.0%	Open the original filing on SEC.gov
Jun 4	Fichthorn John	Director, 10% Owner	CCONV◆	57.2M	—	—	—	Open the original filing on SEC.gov
Jun 4	Fichthorn John	Director, 10% Owner	AGRANT	3.1M	$5.19	$16M	+28.0%	Open the original filing on SEC.gov
Jun 4	Fichthorn John	Director, 10% Owner	CCONV	11M	$5.19	$57.2M	—	Open the original filing on SEC.gov
Jun 4	Dialectic Technology…	10% Owner	CCONV◆	—	—	—	—	Open the original filing on SEC.gov
Jun 4	Dialectic Technology…	10% Owner	AGRANT	3.1M	$5.19	$16M	+28.0%	Open the original filing on SEC.gov
Jun 4	Dialectic Technology…	10% Owner	CCONV	11M	$5.19	$57.2M	—	Open the original filing on SEC.gov
Jun 1	Fichthorn John	Director, 10% Owner	JOTHER◆	105,911	—	—	—	Open the original filing on SEC.gov
Jun 1	Dialectic Technology…	10% Owner	JOTHER◆	105,911	—	—	—	Open the original filing on SEC.gov
Apr 2	Nash Laura A.	Chief Accounting Officer	SSELL	109	$5.44	$593	-1.0%	Open the original filing on SEC.gov
Apr 1	Nash Laura A.	Chief Accounting Officer	AGRANT◆	49,500	—	—	—	Open the original filing on SEC.gov
Apr 1	Meyrath Hugues	President & CEO	AGRANT◆	850,000	—	—	—	Open the original filing on SEC.gov
Apr 1	Craythorne Anthony	Chief Revenue Officer	AGRANT◆	148,500	—	—	—	Open the original filing on SEC.gov
Mar 4	White William Hillis	Chief Financial Officer	AGRANT	25,000	—	—	—	Open the original filing on SEC.gov
Jan 1	White Yue Zhou	Director	AGRANT	12,000	—	—	+41.2%	Open the original filing on SEC.gov
Jan 1	Tracy John R.	Director	AGRANT	12,000	—	—	+80.0%	Open the original filing on SEC.gov
Jan 1	Meyrath Hugues	President & CEO	AGRANT◆	50,000	—	—	—	Open the original filing on SEC.gov
Jan 1	Meyrath Hugues	President & CEO	AGRANT	62,500	—	—	+100.5%	Open the original filing on SEC.gov
Jan 1	Jaworksi Don	Director	AGRANT	12,000	—	—	+43.4%	Open the original filing on SEC.gov
Jan 1	Fichthorn John	Director, 10% Owner	AGRANT	12,000	—	—	+78.6%	Open the original filing on SEC.gov
Jan 1	Craythorne Anthony	Chief Revenue Officer	AGRANT	15,000	—	—	—	Open the original filing on SEC.gov
Jan 1	Clancy James C	Director	AGRANT	12,000	—	—	+1,200%	Open the original filing on SEC.gov
Jan 1	Blevins Tony J	Director	AGRANT	12,000	—	—	+1,200%	Open the original filing on SEC.gov
Dec 18, 2025	Dialectic Technology…	10% Owner	JOTHER◆	—	—	—	—	Open the original filing on SEC.gov
Dec 18, 2025	Fichthorn John	Director, 10% Owner	JOTHER◆	0	—	—	—	Open the original filing on SEC.gov
Nov 1, 2025	Meyrath Hugues	President & CEO	AGRANT◆	50,000	—	—	—	Open the original filing on SEC.gov
Nov 1, 2025	Meyrath Hugues	President & CEO	AGRANT	37,500	—	—	+151.8%	Open the original filing on SEC.gov
Nov 1, 2025	Clancy James C	Director	AGRANT	1,000	—	—	—	Open the original filing on SEC.gov
Nov 1, 2025	Blevins Tony J	Director	AGRANT	1,000	—	—	—	Open the original filing on SEC.gov
Oct 2, 2025	Nash Laura A.	Chief Accounting Officer	SSELL	611	$10.86	$6.6K	-5.2%	Open the original filing on SEC.gov
Oct 2, 2025	Meyrath Hugues	President & CEO	SSELL	2,975	$10.86	$32.3K	-10.8%	Open the original filing on SEC.gov
Oct 1, 2025	Nash Laura A.	Chief Accounting Officer	SSELL	118	$9.91	$1.2K	-1.0%	Open the original filing on SEC.gov
Oct 1, 2025	Nash Laura A.	Chief Accounting Officer	AGRANT	500	—	—	+4.4%	Open the original filing on SEC.gov
Sep 23, 2025	Fichthorn John	Director, 10% Owner	JOTHER◆	2.7M	—	—	—	Open the original filing on SEC.gov
Sep 12, 2025	Nash Laura A.	Chief Accounting Officer	SSELL	284	$7.40	$2.1K	-2.4%	Open the original filing on SEC.gov
May 1, 2025	Fichthorn John	Director	AGRANT	4,405	—	—	+40.5%	Open the original filing on SEC.gov
Apr 21, 2025	Moorehead Lewis W.	Chief Accounting Officer	SSELL	179	$9.65	$1.7K	-0.7%	Open the original filing on SEC.gov
Apr 21, 2025	Moorehead Lewis W.	Chief Accounting Officer	AGRANT	333	—	—	+1.3%	Open the original filing on SEC.gov
Apr 21, 2025	Lerner James J	President & CEO	SSELL	2,784	$9.65	$26.9K	-2.5%	Open the original filing on SEC.gov
Apr 21, 2025	Lerner James J	President & CEO	AGRANT	5,828	—	—	+5.4%	Open the original filing on SEC.gov
Apr 21, 2025	Cabrera Brian E	SVP Chief Admin Ofcr &…	SSELL	1,078	$9.65	$10.4K	-3.6%	Open the original filing on SEC.gov
Apr 21, 2025	Cabrera Brian E	SVP Chief Admin Ofcr &…	AGRANT	1,874	—	—	+6.7%	Open the original filing on SEC.gov
Apr 15, 2025	Pacific Investment…	10% Owner	SSELL	962,127	$10.25	$9.9M	-100.0%	Open the original filing on SEC.gov

AGRANT—

White Yue Zhou · DirectorOct 1

12,000 sh · +29.2% own

AGRANT—

Blevins Tony J · DirectorOct 1

12,000 sh · +92.3% own

AGRANT—

Tracy John R. · DirectorOct 1

12,000 sh · +44.4% own

AGRANT—

Fichthorn John · Director, 10%…Oct 1

12,000 sh · +41.5% own

AGRANT◆—

Clancy James C · Chief Operating…Oct 1

400,000 sh

AGRANT—

Clancy James C · Chief Operating…Oct 1

150,000 sh · +1,154% own

AGRANT◆—

Meyrath Hugues · President & CEOOct 1

500,000 sh

AGRANT—

Patel Hiral · Chief Accounting…Oct 1

50,000 sh

AGRANT—

Jaworksi Don · DirectorOct 1

12,000 sh · +30.3% own

AGRANT◆—

Craythorne Anthony · Chief Revenue…Oct 1

200,000 sh

SSELL$15.9K

Craythorne Anthony · Chief Revenue…Aug 3

1,478 sh @ $10.73 · -9.8% own

SSELL$2.7K

Nash Laura A. · Chief Accounting…Jul 2

260 sh @ $10.51 · -2.4% own

SSELL$65.5K

Meyrath Hugues · President & CEOJul 2

6,232 sh @ $10.51 · -5.0% own

CCONV◆—

Fichthorn John · Director, 10%…Jun 4

57.2M sh

AGRANT$16M

Fichthorn John · Director, 10%…Jun 4

3.1M sh @ $5.19 · +28.0% own

CCONV$57.2M

Fichthorn John · Director, 10%…Jun 4

11M sh @ $5.19

CCONV◆—

Dialectic Technology… · 10% OwnerJun 4

— sh

AGRANT$16M

Dialectic Technology… · 10% OwnerJun 4

3.1M sh @ $5.19 · +28.0% own

CCONV$57.2M

Dialectic Technology… · 10% OwnerJun 4

11M sh @ $5.19

JOTHER◆—

Fichthorn John · Director, 10%…Jun 1

105,911 sh

JOTHER◆—

Dialectic Technology… · 10% OwnerJun 1

105,911 sh

SSELL$593

Nash Laura A. · Chief Accounting…Apr 2

109 sh @ $5.44 · -1.0% own

AGRANT◆—

Nash Laura A. · Chief Accounting…Apr 1

49,500 sh

AGRANT◆—

Meyrath Hugues · President & CEOApr 1

850,000 sh

AGRANT◆—

Craythorne Anthony · Chief Revenue…Apr 1

148,500 sh

AGRANT—

White William Hillis · Chief Financial…Mar 4

25,000 sh

AGRANT—

White Yue Zhou · DirectorJan 1

12,000 sh · +41.2% own

AGRANT—

Tracy John R. · DirectorJan 1

12,000 sh · +80.0% own

AGRANT◆—

Meyrath Hugues · President & CEOJan 1

50,000 sh

AGRANT—

Meyrath Hugues · President & CEOJan 1

62,500 sh · +100.5% own

AGRANT—

Jaworksi Don · DirectorJan 1

12,000 sh · +43.4% own

AGRANT—

Fichthorn John · Director, 10%…Jan 1

12,000 sh · +78.6% own

AGRANT—

Craythorne Anthony · Chief Revenue…Jan 1

15,000 sh

AGRANT—

Clancy James C · DirectorJan 1

12,000 sh · +1,200% own

AGRANT—

Blevins Tony J · DirectorJan 1

12,000 sh · +1,200% own

JOTHER◆—

Dialectic Technology… · 10% OwnerDec 18, 2025

— sh

JOTHER◆—

Fichthorn John · Director, 10%…Dec 18, 2025

0 sh

AGRANT◆—

Meyrath Hugues · President & CEONov 1, 2025

50,000 sh

AGRANT—

Meyrath Hugues · President & CEONov 1, 2025

37,500 sh · +151.8% own

AGRANT—

Clancy James C · DirectorNov 1, 2025

1,000 sh

AGRANT—

Blevins Tony J · DirectorNov 1, 2025

1,000 sh

SSELL$6.6K

Nash Laura A. · Chief Accounting…Oct 2, 2025

611 sh @ $10.86 · -5.2% own

SSELL$32.3K

Meyrath Hugues · President & CEOOct 2, 2025

2,975 sh @ $10.86 · -10.8% own

SSELL$1.2K

Nash Laura A. · Chief Accounting…Oct 1, 2025

118 sh @ $9.91 · -1.0% own

AGRANT—

Nash Laura A. · Chief Accounting…Oct 1, 2025

500 sh · +4.4% own

JOTHER◆—

Fichthorn John · Director, 10%…Sep 23, 2025

2.7M sh

SSELL$2.1K

Nash Laura A. · Chief Accounting…Sep 12, 2025

284 sh @ $7.40 · -2.4% own

AGRANT—

Fichthorn John · DirectorMay 1, 2025

4,405 sh · +40.5% own

SSELL$1.7K

Moorehead Lewis W. · Chief Accounting…Apr 21, 2025

179 sh @ $9.65 · -0.7% own

AGRANT—

Moorehead Lewis W. · Chief Accounting…Apr 21, 2025

333 sh · +1.3% own

SSELL$26.9K

Lerner James J · President & CEOApr 21, 2025

2,784 sh @ $9.65 · -2.5% own

AGRANT—

Lerner James J · President & CEOApr 21, 2025

5,828 sh · +5.4% own

SSELL$10.4K

Cabrera Brian E · SVP Chief Admin…Apr 21, 2025

1,078 sh @ $9.65 · -3.6% own

AGRANT—

Cabrera Brian E · SVP Chief Admin…Apr 21, 2025

1,874 sh · +6.7% own

SSELL$9.9M

Pacific Investment… · 10% OwnerApr 15, 2025

962,127 sh @ $10.25 · -100.0% own

Filing record

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

3 of 38 filings we hold were filed after the two-business-day deadline. The furthest past the deadline was 62 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
Sep 23, 2025	Dec 28, 2025	Fichthorn JohnDirector, 10% Owner	62days · about 3 months	—	Filing ↗
Jun 1	Jun 7	Dialectic Technology SPV…10% Owner	2days	$57.2M	Filing ↗
Jun 1	Jun 7	Fichthorn JohnDirector, 10% Owner	2days	$57.2M	Filing ↗

Fichthorn JohnDirector, 10% Owner

62days · about 3 months

Traded Sep 23, 2025 · filed Dec 28, 2025Filing ↗

Dialectic Technology SPV…10% Owner

2days

Traded Jun 1 · filed Jun 7Filing ↗

Fichthorn JohnDirector, 10% Owner

2days

Traded Jun 1 · filed Jun 7Filing ↗

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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