FormFactor, Inc. (FORM) Insider Trading
Over the last 3 months, FORM insiders made 0 open-market buys and 28 sales, a net sale of -$7.3M (SEC Form 4). Over the last 6 months, 253 institutions increased and 229 reduced their position (13F).
Insider Activity
Sentiment
0/100
Buys (3m)
0
Sells (3m)
28
Net (3m)
-$7.3M
Insider trades by month Buys Sells
Jan
Feb
Mar
Apr
May
Jun
Context3-month price +57.7%Institutions accumulating (13F)
| Date | Insider | Type | Shares | Price |
|---|---|---|---|---|
| Jun 16, 2026 | St Dennis Thomasdirector | Sell | 2,800 | $151.49 |
| Jun 11, 2026 | SLESSOR MIKEdirector, officer: CEO | Sell | 975 | $121.00 |
| Jun 11, 2026 | SLESSOR MIKEdirector, officer: CEO | Sell | 400 | $119.46 |
| Jun 11, 2026 | SLESSOR MIKEdirector, officer: CEO | Sell | 767 | $119.00 |
| Jun 11, 2026 | SLESSOR MIKEdirector, officer: CEO | Sell | 2,500 | $122.63 |
| Jun 11, 2026 | SLESSOR MIKEdirector, officer: CEO | Sell | 1,629 | $123.37 |
| Jun 11, 2026 | SLESSOR MIKEdirector, officer: CEO | Sell | 1,399 | $117.70 |
| Jun 11, 2026 | SLESSOR MIKEdirector, officer: CEO | Sell | 4,220 | $121.72 |
| Jun 4, 2026 | McKinnis Aric Brendanofficer: CFO, SVP Global Finance | Option | 773 | — |
| Jun 4, 2026 | McKinnis Aric Brendanofficer: CFO, SVP Global Finance | Tax | 193 | $125.11 |
| Jun 4, 2026 | Rhodes Sheridirector | Sell | 6,328 | $125.40 |
| May 22, 2026 | Obregon-Jimenez Rebecadirector | Sell | 3,828 | $126.47 |
| May 21, 2026 | St Dennis Thomasdirector | Sell | 1,000 | $115.84 |
| May 21, 2026 | WHITE BRIAN Cdirector | Sell | 3,250 | $126.00 |
| May 19, 2026 | WHITE BRIAN Cdirector | Grant | 1,347 | — |
| May 19, 2026 | STEVEN-WAISS KELLEYdirector | Grant | 1,347 | — |
| May 19, 2026 | Obregon-Jimenez Rebecadirector | Grant | 1,347 | — |
| May 19, 2026 | Rhodes Sheridirector | Grant | 1,347 | — |
| May 19, 2026 | St Dennis Thomasdirector | Grant | 1,347 | — |
| May 19, 2026 | Titinger Jorgedirector | Grant | 1,347 | — |
| May 15, 2026 | Titinger Jorgedirector | Sell | 4,009 | $128.78 |
| May 15, 2026 | STEVEN-WAISS KELLEYdirector | Sell | 5,400 | $125.60 |
| May 14, 2026 | SLESSOR MIKEdirector, officer: CEO | Sell | 200 | $130.57 |
| May 14, 2026 | SLESSOR MIKEdirector, officer: CEO | Sell | 1,300 | $123.72 |
| May 14, 2026 | SLESSOR MIKEdirector, officer: CEO | Sell | 702 | $136.15 |
| May 14, 2026 | SLESSOR MIKEdirector, officer: CEO | Sell | 2,984 | $124.71 |
| May 14, 2026 | SLESSOR MIKEdirector, officer: CEO | Sell | 100 | $127.47 |
| May 14, 2026 | SLESSOR MIKEdirector, officer: CEO | Sell | 1,388 | $125.58 |
| May 14, 2026 | SLESSOR MIKEdirector, officer: CEO | Sell | 398 | $126.59 |
| May 14, 2026 | SLESSOR MIKEdirector, officer: CEO | Sell | 700 | $122.84 |
Source: FORM SEC Form 4 filings, latest Jun 16, 2026. For informational purposes only — not investment advice.
Institutional activity (13F)
How institutions changed their FORM positions over the last 6 months (SEC Form 13F).
Increased
253
New positions
184
Reduced
229
Sold out
72
Largest moves
| Institution | Action | Shares | Filed |
|---|---|---|---|
| BLACKROCK, INC. | Increased | 12.2M | May 13, 2026 |
| BLACKROCK, INC. | Increased | 11.6M | Feb 12, 2026 |
| VANGUARD GROUP INC | Reduced | 10.2M | Jan 29, 2026 |
| VANGUARD CAPITAL MANAGEMENT LLC | New Position | 6.9M | May 15, 2026 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | New Position | 5.9M | May 8, 2026 |
| EARNEST PARTNERS LLC | Reduced | 5.8M | Feb 12, 2026 |
| EARNEST PARTNERS LLC | Reduced | 4.9M | May 15, 2026 |
| STATE STREET CORP | Increased | 2.9M | May 15, 2026 |
| STATE STREET CORP | Reduced | 2.9M | Feb 13, 2026 |
| BANK OF AMERICA CORP /DE/ | Reduced | 2.5M | Feb 3, 2026 |
| BANK OF AMERICA CORP /DE/ | Reduced | 2.5M | Feb 17, 2026 |
| BANK OF AMERICA CORP /DE/ | Reduced | 2.5M | May 18, 2026 |
| POLAR CAPITAL HOLDINGS PLC | New Position | 2.3M | May 15, 2026 |
| MORGAN STANLEY | Increased | 2.3M | Feb 13, 2026 |
| ALLIANCEBERNSTEIN L.P. | Increased | 2.2M | May 15, 2026 |
Source: SEC Form 13F filings. For informational purposes only — not investment advice.