St Dennis Thomas
- Shares
- 28.33K
- % company
- 0.04%
- Price
- Non-cash
- Value
- Non-cash
Filed Jun 16, 2026
Methodology published · Market data, model notes, and corrections process are public · Data policy · Corrections policy
NasdaqGS · Technology · Holders
FormFactor Inc (FORM) Institutional Ownership & Insider Trading History
Recent insider purchases and sales for FORM from Form 4 filings. Institutional holdings surface here when ownership sources publish.
Section freshness
Price Jul 21, 4:00 PM EDT · Statements Mar 27, 8:00 PM EDT
Source timingDetailsHide
Data freshness
Prices update fastest. Fundamentals, analyst data, and news update on their own schedules, so check these timestamps before comparing signals.
Price time means the latest available trade or regular-market close. Other times show when that section was checked or published.
PriceAt close
Last traded •
Source: Market data provider
Fundamentalsevery 1 hr
Provider checked •
Source: Market data provider
Analystevery 1 hr
Provider checked •
Source: Market data provider
Newsevery 15 min
Latest item •
Source: Market data provider
Ownership read
FORM insider sentiment: Net selling.
57 sales and 0 purchases appear in the recent Form 4 filings. Use the filters below to separate real buying and selling from option exercises, gifts, awards, and tax withholding.
Insider flow
FORM
Purchases—
Sales17.55M
Directional bars ignore awards, gifts, conversions, and tax withholding rows.
Top holder
—
Institutional data pending
Insider stance
Net selling
$1.88B sold / — bought
Latest filing
Jun 16, 2026
Most recent holder or insider filing date
Filings shown
120
0 holder / 120 insider
- Holder rows
- Pending
- Market data source
- Latest filing
- Jun 16, 2026
- Most recent holder or insider filing date
- Increased / initiated
- Pending
- 0 decreased
- Insider rows
- 120
- Market data source
Recent insider transactions
FormFactor Inc (FORM) Form 4 filings
Action codes are translated so open-market buys and sales are separate from awards, gifts, conversions, and tax withholding.
St Dennis Thomas
- Shares
- 29.07K
- % company
- 0.04%
- Price
- $151.49
- Value
- $4,404,269
Filed Jun 15, 2026
SLESSOR MIKE
- Shares
- 435.15K
- % company
- 0.56%
- Price
- $123.37
- Value
- $53,684,085
Filed Jun 10, 2026
SLESSOR MIKE
- Shares
- 436.78K
- % company
- 0.56%
- Price
- $122.63
- Value
- $53,561,841
Filed Jun 10, 2026
SLESSOR MIKE
- Shares
- 439.28K
- % company
- 0.56%
- Price
- $121.72
- Value
- $53,468,675
Filed Jun 10, 2026
SLESSOR MIKE
- Shares
- 443.50K
- % company
- 0.57%
- Price
- $121.00
- Value
- $53,663,016
Filed Jun 10, 2026
SLESSOR MIKE
- Shares
- 444.47K
- % company
- 0.57%
- Price
- $119.46
- Value
- $53,096,506
Filed Jun 10, 2026
SLESSOR MIKE
- Shares
- 444.87K
- % company
- 0.57%
- Price
- $119.00
- Value
- $52,939,649
Filed Jun 10, 2026
SLESSOR MIKE
- Shares
- 445.64K
- % company
- 0.57%
- Price
- $117.70
- Value
- $52,451,593
Filed Jun 10, 2026
McKinnis Aric Brendan
- Shares
- —
- % company
- —
- Price
- No cash value
- Value
- No cash value
Filed Jun 2, 2026
McKinnis Aric Brendan
- Shares
- 12.94K
- % company
- 0.02%
- Price
- $125.11
- Value
- $1,618,423
Filed Jun 2, 2026
McKinnis Aric Brendan
- Shares
- 13.13K
- % company
- 0.02%
- Price
- No cash value
- Value
- No cash value
Filed Jun 2, 2026
| # | Insider | % company | Action | Shares | Price | Value | Filing date |
|---|---|---|---|---|---|---|---|
| 1 | St Dennis Thomas | 0.04% | GiftGift transfer. Usually non-cash and not an open-market sale. | 28.33K | Non-cash | Non-cash | Jun 16, 2026 |
| 2 | St Dennis Thomas | 0.04% | SaleOpen-market or direct sale reported on Form 4. | 29.07K | $151.49 | $4,404,269 | Jun 15, 2026 |
| 3 | SLESSOR MIKE | 0.56% | SaleOpen-market or direct sale reported on Form 4. | 435.15K | $123.37 | $53,684,085 | Jun 10, 2026 |
| 4 | SLESSOR MIKE | 0.56% | SaleOpen-market or direct sale reported on Form 4. | 436.78K | $122.63 | $53,561,841 | Jun 10, 2026 |
| 5 | SLESSOR MIKE | 0.56% | SaleOpen-market or direct sale reported on Form 4. | 439.28K | $121.72 | $53,468,675 | Jun 10, 2026 |
| 6 | SLESSOR MIKE | 0.57% | SaleOpen-market or direct sale reported on Form 4. | 443.50K | $121.00 | $53,663,016 | Jun 10, 2026 |
| 7 | SLESSOR MIKE | 0.57% | SaleOpen-market or direct sale reported on Form 4. | 444.47K | $119.46 | $53,096,506 | Jun 10, 2026 |
| 8 | SLESSOR MIKE | 0.57% | SaleOpen-market or direct sale reported on Form 4. | 444.87K | $119.00 | $52,939,649 | Jun 10, 2026 |
| 9 | SLESSOR MIKE | 0.57% | SaleOpen-market or direct sale reported on Form 4. | 445.64K | $117.70 | $52,451,593 | Jun 10, 2026 |
| 10 | McKinnis Aric Brendan | — | Option exerciseDerivative exercise or conversion before any separate sale row. | — | No cash value | No cash value | Jun 2, 2026 |
| 11 | McKinnis Aric Brendan | 0.02% | Tax withholdingShares withheld to cover tax obligations. Usually administrative, not an open-market sale. | 12.94K | $125.11 | $1,618,423 | Jun 2, 2026 |
| 12 | McKinnis Aric Brendan | 0.02% | Option exerciseDerivative exercise or conversion before any separate sale row. | 13.13K | No cash value | No cash value | Jun 2, 2026 |
Showing 12 of 120 matching Form 4 rows. Percent of company uses current shares outstanding when available.
Frequently asked
Common questions.
Who are the largest FORM shareholders?
FormFactor Inc (FORM) institutional holders are ranked by reported share count when ownership data publishes filing rows.
What is institutional ownership of FORM?
FormFactor Inc (FORM) institutional ownership appears when filing-based market data returns holder rows. TECHi does not fill unavailable ownership fields with placeholder shareholders.
Where can I see FormFactor Inc insider transactions?
FormFactor Inc (FORM) has 120 Form 4 insider transactions on file, most recently on Jun 16, 2026, separated into purchases, sales, option exercises, awards, gifts, and tax withholding so administrative transactions are distinguished from open-market trades.
Are FORM insiders buying or selling?
Recent FORM insider activity reads Net selling: 57 sales and 0 purchases. Awards, gifts, conversions, and tax withholding are listed separately because they do not carry the same signal as open-market trades.
Who is the most active FORM insider?
SLESSOR MIKE is the most active FORM insider by absolute share movement, with 26.80 million shares moving across the filing history. Review the action labels before treating that activity as buying or selling.