FORM
FormFactor (FORM)
NASDAQ
$114.23+$0.06 (+0.06%)
Price as of Aug 21, 2026 7:53 PM EDT
  • $8.9B
    Market Cap
  • 291.50%
    1-Year Change
  • Semiconductor Equipment & Materials
    Industry

Top Holders

Institutional
Mutual Funds
Holder
Ownership %
Shares Held
Change (Shares, %)
Report Date
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
BLACKROCK, INC.
13.45%
10.5M
-1.8M (-16.82%)
Jun 30, 2026
VANGUARD GROUP INC
13.11%
10.2M
-78,334 (-0.77%)
Dec 31, 2025
VANGUARD PORTFOLIO MANAGEMENT LLC
6.72%
5.2M
-637,805 (-12.17%)
Jun 30, 2026
N/A
6.72%
5.2M
-637,805 (-12.17%)
Jun 30, 2026
EARNEST PARTNERS LLC
4.83%
3.8M
-1.1M (-29.55%)
Jun 30, 2026

Current Ownership Distribution

  • Institutions1.4B (73.98%)
  • Mutual Funds500.9M (25.84%)
  • Insiders3.3M (0.17%)
  • Other0 (0.00%)

Insider Transactions

  • 0.17% (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)
  • $713.2M
    Amount of InsiderSelling (last 12 months)
Insider Name & Title
Type
Date
Transaction Value
Shares
Share Price
Shares After Transactions
SLESSOR MIKE
CEO
Sell
Aug 14, 2026
$319,483.04
2,482
$128.72
497,724
SLESSOR MIKE
CEO
Sell
Aug 14, 2026
$374,658.60
2,892
$129.55
494,832
SLESSOR MIKE
CEO
Sell
Aug 14, 2026
$428,432.28
3,282
$130.54
491,550
SLESSOR MIKE
CEO
Sell
Aug 14, 2026
$148,106.25
1,125
$131.65
490,425
SLESSOR MIKE
CEO
Sell
Aug 14, 2026
$733,387.50
5,535
$132.50
484,890
SLESSOR MIKE
CEO
Sell
Aug 14, 2026
$91,464.38
686
$133.33
484,204
SLESSOR MIKE
CEO
Award
Aug 07, 2026
$0.00
141,792
$0.00
141,792
SLESSOR MIKE
CEO
Exempt
Aug 07, 2026
$0.00
141,792
$0.00
0
SLESSOR MIKE
CEO
Exempt
Aug 07, 2026
$0.00
5,908
$0.00
0
SLESSOR MIKE
CEO
Exempt
Aug 07, 2026
$0.00
141,792
$0.00
576,494
SLESSOR MIKE
CEO
In Kind
Aug 07, 2026
$9.3M
78,908
$117.39
497,586
SLESSOR MIKE
CEO
Exempt
Aug 07, 2026
$0.00
5,908
$0.00
503,494
SLESSOR MIKE
CEO
In Kind
Aug 07, 2026
$385,978.32
3,288
$117.39
500,206
McKinnis Aric Brendan
CFO, SVP Global Finance
Award
Aug 06, 2026
$0.00
6,924
$0.00
6,924
SLESSOR MIKE
CEO
Award
Aug 06, 2026
$0.00
27,696
$0.00
27,696
SLESSOR MIKE
CEO
Exempt
Aug 06, 2026
$0.00
6,031
$0.00
48,248
SLESSOR MIKE
CEO
Exempt
Aug 06, 2026
$0.00
6,031
$0.00
438,059
SLESSOR MIKE
CEO
In Kind
Aug 06, 2026
$386,759.97
3,357
$115.21
434,702
SLESSOR MIKE
CEO
Exempt
Aug 05, 2026
$0.00
3,644
$0.00
14,576
SLESSOR MIKE
CEO
Exempt
Aug 05, 2026
$0.00
3,644
$0.00
434,056
SLESSOR MIKE
CEO
In Kind
Aug 05, 2026
$232,084.32
2,028
$114.44
432,028
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