FORM
FormFactor (FORM)
NASDAQ
$94.77-$17.41 (-15.52%)
Price as of Oct 22, 2026 6:00 PM EDT
  • $8.8B
    Market Cap
  • 171.69%
    1-Year Change
  • Semiconductor Equipment & Materials
    Industry

Top Holders

Institutional
Mutual Funds
Holder
Ownership %
Shares Held
Change (Shares, %)
Report Date
BLACKROCK FUNDING, INC. /DE
15.57%
12.2M
+229,552 (+1.89%)
Dec 31, 2024
BLACKROCK INC.
15.01%
11.7M
-138,385 (-1.18%)
Jun 30, 2024
BLACKROCK, INC.
13.42%
10.5M
-1.8M (-16.82%)
Jun 30, 2026
VANGUARD GROUP INC
13.08%
10.2M
-78,334 (-0.77%)
Dec 31, 2025
VANGUARD PORTFOLIO MANAGEMENT LLC
6.71%
5.2M
-637,805 (-12.17%)
Jun 30, 2026
N/A
6.71%
5.2M
-637,805 (-12.17%)
Jun 30, 2026
EARNEST PARTNERS LLC
4.82%
3.8M
-1.1M (-29.55%)
Jun 30, 2026

Current Ownership Distribution

  • Institutions1.4B (72.62%)
  • Mutual Funds538.0M (27.21%)
  • 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)
  • 8
    Number of InsiderSelling (last 12 months)
  • $1.0B
    Amount of InsiderSelling (last 12 months)
Insider Name & Title
Type
Date
Transaction Value
Shares
Share Price
Shares After Transactions
SLESSOR MIKE
CEO
Sell
Oct 14, 2026
$272,684.85
2,195
$124.23
464,499
SLESSOR MIKE
CEO
Sell
Oct 14, 2026
$965,648.08
7,703
$125.36
456,796
SLESSOR MIKE
CEO
Sell
Oct 14, 2026
$151,104.00
1,200
$125.92
455,596
SLESSOR MIKE
CEO
Sell
Sep 16, 2026
$910,919.62
8,737
$104.26
475,467
SLESSOR MIKE
CEO
Sell
Sep 16, 2026
$817,097.76
7,773
$105.12
467,694
SLESSOR MIKE
CEO
Sell
Sep 16, 2026
$105,800.00
1,000
$105.80
466,694
STEVEN-WAISS KELLEY
Sell
Sep 03, 2026
$201,810.21
2,100
$96.10
24,426
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