Insider Profile · SEC Form 4 Activity · Trailing 90 Days

Fichthorn John

Over the trailing 90 days, Fichthorn John (Director at QUANTUM CORP /DE/) bought $73.3M of stock in QMCO, per 4 SEC Form 4 transactions.

Role: Director
Companies: QMCO
Window: Trailing 90 days · 4 transactions · CIK 1411509
Net activity: +$73.3M ($73.3M bought · $0 sold)
Source: Official filings on sec.gov ↗

By Company (Trailing 90 Days)

Symbol	Company	Txns	Bought	Sold	Net
QMCO	QUANTUM CORP /DE/	4	$73.3M	—	$73.3M

Transactions (4)

Date	Symbol	Type	Shares	Value	Description
2026-06-04	QMCO	Buy	11.0M	$57.2M	Conversion of derivative security
2026-06-04	QMCO	Buy	3.1M	$16.0M	Grant, award or other acquisition
2026-06-04	QMCO	Sell	57.2M	$0	Conversion of derivative security
2026-06-01	QMCO	Buy	105.9K	$0	Other acquisition or disposition

Activity shown covers the trailing 90 days of SEC Form 4 filings. "Buy" and "sell" follow the SEC acquired/disposed codes and include compensation events (grants, option exercises, tax withholding) unless noted. Historical fact, not investment advice.

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