← All stocks

QUANTUM CORP /DE/

QMCO Net selling
CIK 0000709283 #2733 in the set updated 19 Sep 2026
Bought (120 mo)
$13.15M
out of their own pocket, the only kind of buying there is
Sold (120 mo)
$71.86M
$0.00 on a plan · $14.04M straight out of an exercise
Sold at will
$57.82M
125 of 131 sales
Net
−$58.71M
−$44.67M against sales at will

By person

47 insiders · 205 transactions
Insider
Role
Bought
Sold
Net
Holding
Worth
Change
PACIFIC INVESTMENT MANAGEMENT CO LLC entity
10% owner
$23.90M (7) scheduled
−$23.90M
0
$0.00
−100.0%
Smith Jeffrey C
10% owner
$10.47M (16)
−$10.47M
7,518,996
$80.66M
−60.4%
Starboard Value LP entity
10% owner
$10.47M (16)
−$10.47M
7,518,996
$80.66M
−60.4%
BR Dialectic Capital Management, LLC entity
10% owner
$5.09M (1)
−$5.09M
0
$0.00
−100.0%
FICHTHORN JOHN
Director
$294.35K (4)
$5.09M (1)
−$4.80M
15,645,692
$167.85M
+555.7%
BRC Group Holdings, Inc. entity
10% owner
$11.73M (45)
$7.76M (3)
+$3.97M
22,176,082
$237.91M
+29.1%
Lerner James J
President & CEO
$408.35K (4)
$2.96M (15)
−$2.55M
110,848
$1.19M
Singer Eric
10% owner
$2.08M (3)
−$2.08M
7,089,609
$76.06M
−3.7%
DODSON J MICHAEL
Senior Vice President, CFO
$509.03K (8)
$1.28M (11)
−$771.97K
870,372
$9.34M
+6,336%
King Elizabeth
Chief Revenue Officer
$529.38K (5)
−$529.38K
285,114
$3.06M
+2,696%
Clark Robert S.
SVP, Product Operations
$505.20K (1)
−$505.20K
74,703
$801.42K
−33.3%
Martella Donald E. Jr.
SVP, Engineering
$444.92K (4)
−$444.92K
81,407
$873.34K
−7.5%
Moorehead Lewis W.
Chief Accounting Officer
$49.45K (3)
$355.36K (11)
−$305.91K
24,971
$267.89K
Cabrera Brian E
SVP Chief Admin Ofcr & Secy
$197.61K (11)
−$197.61K
28,736
$308.28K
Ahmad Fuad
SVP, Chief Financial Officer
$147.82K (2)
−$147.82K
170,998
$1.83M
Rothman Marc E
Director
$114.00K (1)
+$114.00K
297,625
$3.19M
+3,422%
GACEK JON W
President and CEO
$103.28K (2)
−$103.28K
407,207
$4.37M
+11.2%
Meyrath Hugues
President & CEO
$97.81K (2)
−$97.81K
118,468
$1.27M
Hurley John
Chief Revenue Officer
$93.36K (3)
−$93.36K
341,519
$3.66M
+3,244%
Gianella Kenneth P.
Chief Financial Officer
$92.07K (3)
−$92.07K
32,402
$347.61K
HALL SHAWN D
Senior VP, GC & Secretary
$78.20K (1)
−$78.20K
119,999
$1.29M
MacPherson Regan J
Chief Legal&Compliance Officer
$57.24K (1)
−$57.24K
81,089
$869.93K
+11,386%
RAU RAGHAVENDRA
Director
$49.97K (1)
+$49.97K
257,874
$2.77M
Spanjaard Henk Jan
Chief Revenue Officer
$35.11K (2)
−$35.11K
14,903
$159.88K
Nash Laura A.
Chief Accounting Officer
$22.39K (9)
−$22.39K
10,770
$115.54K
Craythorne Anthony
Chief Revenue Officer
$15.86K (1)
−$15.86K
13,522
$145.07K
Dialectic Technology SPV LLC entity
10% owner
14,104,620
$151.32M
Powers Gregg J
Director
931,892
$10.00M
+9.4%
ROBERSON DAVID EARLE
Director
431,784
$4.63M
+22.7%
KRALL DAVID
Director
394,875
$4.24M
+8.2%
DINARDO LOUIS
Director
285,392
$3.06M
+11.7%
FULLER DALE L
Director
263,890
$2.83M
+12.8%
BRITTS WILLIAM C
SVP, Worldwide Sales & Mktg.
206,646
$2.22M
+19.9%
Jacoby Rebecca
Director
158,624
$1.70M
Dennis Patrick
President and CEO
125,000
$1.34M
Press Clifford
Director
118,940
$1.28M
Auvil Paul R. III
Director
101,735
$1.09M
Stedman Geoff G.
SVP, Mktg. & Storage Solutions
100,461
$1.08M
+38.9%
SANCHEZ ADALIO T
Director
84,072
$901.93K
MUTCH JOHN
Director
50,000
$536.41K
White Yue Zhou
Director
41,139
$441.34K
Jaworksi Don
Director
39,675
$425.64K
Tracy John R.
Director
27,000
$289.66K
White William Hillis
Chief Financial Officer
25,000
$268.20K
Pinchev Alex
Director
20,344
$218.25K
Clancy James C
Director
13,000
$139.47K
Blevins Tony J
Director
13,000
$139.47K

No percentages here. This company's share count has moved by a factor of 8.1 over the window, from 4,848,482 to 39,374,500 shares. A split, a merger or a large issue changes what the company is, and a holding measured at one point in that run is not a fraction of it at another.

Insider
Date
Role
Action
Shares
Price
Amount
Dialectic Technology SPV LLC
4 Jun 2026
10% owner
Exercised, kept
11,020,645
$5.19
$57.24M
FICHTHORN JOHN
4 Jun 2026
Director
Exercised, kept indirect
11,020,645
$5.19
$57.24M
DODSON J MICHAEL
22 Apr 2022
Senior Vice President, CFO
Exercised, kept
10,000
$2.25
$22.50K
Rothman Marc E
22 Apr 2022
Director
Exercised, kept
49,431
$2.25
$111.22K
RAU RAGHAVENDRA
22 Apr 2022
Director
Exercised, kept
44,445
$2.25
$100.00K
Lerner James J
22 Apr 2022
President & CEO
Exercised, kept
4,445
$2.25
$10.00K
Jacoby Rebecca
22 Apr 2022
Director
Exercised, kept
16,592
$2.25
$37.33K
Moorehead Lewis W.
22 Apr 2022
Chief Accounting Officer
Exercised, kept
10,422
$2.25
$23.45K

What was left out

Form 4 filings counted 290
Amendments (4/A) skipped 20
Filings about a different issuer 0
Unreadable filings 0
Joint filings 26
Sales on a Rule 10b5-1 plan 0
Sales straight out of an exercise 6
Sales at will 125
Transactions with no price 3
Shares from compensation/vesting 37,793,222
Sales filed before the plan box existed 91
History held since 5 Dec 2016