QUANTUM CORP /DE/ (QMCO) IPO — S-1 Filing, Stock & Insider Activity

QUANTUM CORP /DE/ IPO — Status & S-1 Filing

Ticker: QMCO
Status: Registered — S-1 filed with the SEC
S-1 filed: 2025-11-17
Expected price range: not yet disclosed (set in a later S-1/A or pricing amendment)
SEC CIK: 0000709283 · View the S-1 on SEC EDGAR →

Track every registration update on the InsiderAlpha IPO tracker.

Updated Jul 16, 2026 · Last SEC filing 2026-07-07

QUANTUM CORP /DE/ (QMCO) has filed 4 SEC Form 4 insider transactions in the last 90 days, with the most recent on 2026-07-07. 3 Form 8-K material event filings were reported by QMCO in the last 90 days. InsiderAlpha tracks every QMCO SEC filing — Form 4, Form 144, and 8-K — in real time, including Rule 10b5-1 plan detection.

About QUANTUM CORP /DE/ (QMCO)

SIC classification	Computer Storage Devices (SIC 3572)
SEC CIK	0000709283

90-Day SEC Filing Activity

Form 4 filings (90d)	4
Form 8-K filings (90d)	3
Latest Form 4 filing	2026-07-07

Recent QMCO Insider Transactions (Form 4)

Date	Insider	Role	Transaction	Shares	Price	Value	Filing
2026-07-02	Nash Laura A.	Chief Accounting Officer	S — Open-market sale	260	$10.51	$3K	SEC
2026-07-02	Meyrath Hugues	President & CEO	S — Open-market sale	6.2K	$10.51	$65K	SEC
2026-06-04	Dialectic Technology SPV LLC	Insider	A — Grant or award	3.08M	$5.19	$16.02M	SEC
2026-06-04	FICHTHORN JOHN	Director	J — Other acquisition / disposition	11.02M	$5.19	$57.24M	SEC
2026-06-04	Dialectic Technology SPV LLC	Insider	J — Other acquisition / disposition	11.02M	$5.19	$57.24M	SEC
2026-06-04	FICHTHORN JOHN	Director	A — Grant or award	3.08M	$5.19	$16.02M	SEC
2026-04-02	Nash Laura A.	Chief Accounting Officer	S — Open-market sale	109	$5.44	$593	SEC
2026-03-04	White William Hillis	Chief Financial Officer	A — Grant or award	25.0K	$0.00	—	SEC
2025-10-02	Meyrath Hugues	President CEO	S — Open-market sale	3.0K	$10.86	$32K	SEC
2025-10-02	Nash Laura A.	Chief Accounting Officer	S — Open-market sale	611	$10.86	$7K	SEC
2025-10-01	Nash Laura A.	Chief Accounting Officer	S — Open-market sale	118	$9.91	$1K	SEC
2025-10-01	Nash Laura A.	Chief Accounting Officer	A — Grant or award	500	$0.00	—	SEC
2025-09-12	Nash Laura A.	Chief Accounting Officer	S — Open-market sale	284	$7.40	$2K	SEC
2025-04-15	PACIFIC INVESTMENT MANAGEMENT CO LLC	Insider	S — Open-market sale	962.1K	$10.25	$9.86M	SEC
2024-11-08	Lerner James J	President & CEO	S — Open-market sale	6.5K	$4.43	$29K	SEC

All transactions sourced from SEC EDGAR Form 4 filings for QUANTUM CORP /DE/ (QMCO). Updated in real time as new filings are submitted to the SEC.

Most-Active QMCO Insiders — Last 90 Days

Insider	Form 4 filings	Total transaction value
Dialectic Technology SPV LLC	4	$73.26M
FICHTHORN JOHN	4	$73.26M
Meyrath Hugues	1	$65K
Nash Laura A.	1	$3K

Recent QMCO Form 8-K Material Events

2026-06-25 — Item 2.02, 9.01 [SEC]
2026-06-05 — Item 1.02, 5.08, 8.01 [SEC]
2026-06-02 — Item 1.01, 2.02, 2.03, 3.02, 8.01, 9.01 [SEC]
2026-02-17 — Item 2.02, 9.01 · Earnings · neutral [SEC]
Quantum Corporation reported financial results for the fiscal quarter ended December 31, 2025 on February 17, 2026. The 8-K provides minimal substantive detail, merely referencing an earnings release furnished as an exhibit without disclosing actual financial metrics, performance

Recent Insider Filings

2026-07-07 — Nash Laura A. (Chief Accounting Officer)
2026-07-07 — Meyrath Hugues (President & CEO)
2026-06-09 — FICHTHORN JOHN (Director)
2026-06-09 — Dialectic Technology SPV LLC (Insider)
2026-04-03 — Nash Laura A. (Chief Accounting Officer)

Form 4 Transaction Code Reference

SEC Form 4 transactions are reported with a one-letter code indicating the type of transaction. Common codes you'll see in QMCO insider filings:

P	Open-market purchase by the insider
S	Open-market sale by the insider
A	Grant, award, or other acquisition from the issuer
M	Exercise or conversion of derivative security (e.g. options)
F	Payment of exercise price or tax liability via share withholding
G	Bona-fide gift of securities
D	Disposition to the issuer (e.g. share buyback participation)
J	Other acquisition or disposition
X	Exercise of in-the-money or at-the-money derivative security
C	Conversion of derivative security
V	Transaction voluntarily reported earlier than required

QMCO Insider Trading — FAQ

What is the latest insider trade for QMCO?: QUANTUM CORP /DE/ (QMCO) had 4 insider filings in the last 90 days, with the most recent on 2026-07-07. InsiderAlpha tracks every Form 4, 10-K, 10-Q, and 8-K filing in real time.
How many insiders are buying QMCO stock?: 0 insider purchases of QMCO were filed in the last 90 days.
How many insiders are selling QMCO stock?: 0 insider sales of QMCO were filed in the last 90 days.
Where can I see QMCO SEC filings (Form 4, 10-K, 10-Q, 8-K)?: InsiderAlpha aggregates every QMCO SEC filing — Form 4 insider transactions, 10-K and 10-Q quarterly reports, and 8-K material event disclosures — in one timeline.

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