FORM
FormFactor (FORM)
NASDAQ
$143.61-$13.05 (-8.33%)
Price as of Jun 23, 2026 10:42 AM EDT
  • $12.2B
    Market Cap
  • 373.01%
    1-Year Change
  • Semiconductor Equipment & Materials
    Industry

Top Holders

Institutional
Mutual Funds
Holder
Ownership %
Shares Held
Change (Shares, %)
Report Date
BLACKROCK, INC.
15.71%
12.2M
+677,935 (+5.54%)
Mar 31, 2026
BLACKROCK FUNDING, INC. /DE
15.60%
12.2M
+229,552 (+1.89%)
Dec 31, 2024
BLACKROCK INC.
15.05%
11.7M
-138,385 (-1.18%)
Jun 30, 2024
VANGUARD GROUP INC
13.11%
10.2M
-78,334 (-0.77%)
Dec 31, 2025
N/A
7.54%
5.9M
+5.9M (+100.00%)
Mar 31, 2026
EARNEST PARTNERS LLC
6.25%
4.9M
-899,827 (-18.46%)
Mar 31, 2026
WELLINGTON MANAGEMENT CO LLP
3.82%
3.0M
+45,237 (+1.52%)
Dec 31, 2021

Current Ownership Distribution

  • Institutions1.4B (73.79%)
  • Mutual Funds479.3M (26.03%)
  • Insiders3.3M (0.18%)
  • Other0 (0.00%)

Insider Transactions

  • 0.18% (3.3M)
    Current InsiderOwnership (%, shares)
  • 0
    Number of InsiderBuying (last 12 months)
  • $0.00
    Amount of InsiderBuying (last 12 months)
  • 7
    Number of InsiderSelling (last 12 months)
  • $346.7M
    Amount of InsiderSelling (last 12 months)
Insider Name & Title
Type
Date
Transaction Value
Shares
Share Price
Shares After Transactions
St Dennis Thomas
Gift
Jun 16, 2026
$0.00
740
$0.00
28,333
St Dennis Thomas
Sell
Jun 15, 2026
$424,172.00
2,800
$151.49
29,073
SLESSOR MIKE
CEO
Sell
Mar 18, 2026
$178,790.00
1,900
$94.10
469,186
SLESSOR MIKE
CEO
Sell
Mar 18, 2026
$523,178.95
5,495
$95.21
463,691
SLESSOR MIKE
CEO
Sell
Mar 18, 2026
$271,107.36
2,832
$95.73
460,859
McKinnis Aric Brendan
CFO, SVP Global Finance
Sell
Mar 05, 2026
$313,034.04
3,462
$90.42
11,140
McKinnis Aric Brendan
CFO, SVP Global Finance
Exempt
Mar 02, 2026
$0.00
773
$0.00
773
McKinnis Aric Brendan
CFO, SVP Global Finance
Exempt
Mar 02, 2026
$0.00
773
$0.00
14,795
McKinnis Aric Brendan
CFO, SVP Global Finance
In Kind
Mar 02, 2026
$19,242.10
193
$99.70
14,602
WHITE BRIAN C
Sell
Feb 24, 2026
$230,023.00
2,300
$100.01
10,556
BREWER KEVIN J
Sell
Feb 11, 2026
$288,600.00
3,000
$96.20
8,105
Rhodes Sheri
Sell
Feb 10, 2026
$706,973.29
7,634
$92.61
10,356
St Dennis Thomas
Sell
Feb 10, 2026
$524,894.35
5,601
$93.71
33,356
St Dennis Thomas
Sell
Feb 10, 2026
$172,460.30
1,830
$94.24
31,526
Titinger Jorge
Sell
Feb 09, 2026
$177,680.00
2,000
$88.84
17,498
WHITE BRIAN C
Sell
Feb 09, 2026
$500,225.00
5,500
$90.95
12,856
SLESSOR MIKE
CEO
Exempt
Feb 09, 2026
$0.00
5,908
$0.00
11,816
SLESSOR MIKE
CEO
Exempt
Feb 09, 2026
$0.00
5,908
$0.00
483,038
SLESSOR MIKE
CEO
In Kind
Feb 09, 2026
$311,965.44
3,288
$94.88
479,750
SLESSOR MIKE
CEO
Exempt
Feb 06, 2026
$0.00
6,031
$0.00
60,310
SLESSOR MIKE
CEO
Exempt
Feb 06, 2026
$0.00
6,031
$0.00
480,487
SLESSOR MIKE
CEO
In Kind
Feb 06, 2026
$303,103.53
3,357
$90.29
477,130
SLESSOR MIKE
CEO
Exempt
Feb 05, 2026
$0.00
3,644
$0.00
476,551
SLESSOR MIKE
CEO
In Kind
Feb 05, 2026
$175,707.65
2,095
$83.87
474,456
SLESSOR MIKE
CEO
Exempt
Feb 05, 2026
$0.00
3,644
$0.00
21,864
SLESSOR MIKE
CEO
Sell
Jan 15, 2026
$533,175.68
6,976
$76.43
479,019
SLESSOR MIKE
CEO
Sell
Jan 15, 2026
$472,090.88
6,112
$77.24
472,907
SLESSOR MIKE
CEO
Sell
Dec 17, 2025
$315,001.14
5,606
$56.19
527,664
SLESSOR MIKE
CEO
Sell
Dec 17, 2025
$117,219.66
2,063
$56.82
525,601
SLESSOR MIKE
CEO
Sell
Nov 19, 2025
$235,291.35
4,739
$49.65
536,934