Transaction · 0001628280-26-057485
FORMFORMFACTOR INC
Slessor Mike
SLESSOR MIKE, CEO, reported an open-market or private sale at FORMFACTOR INC involving 1125.000000 shares for an estimated $148106.25. Reported holdings after the transaction were 490425.000000 shares. The stored filing text includes a detected 10b5-1 reference.
Open-market sellSEC transaction code SCEO
- Trade date
- Aug 14, 2026
- Filing date
- Aug 17, 2026
How reported position traded is calculated
Shares sold ÷ (holdings after + shares sold). Estimated position before: 491,550 shares.
Row-level estimate for this security and ownership context, not the insider’s complete portfolio. Joint ownership, other transactions in the filing, amendments and footnotes can affect interpretation.
FORM price since this filing
Daily closing prices, with the filing date and available return windowsFORM · Daily closing priceLoading daily prices…
Filing dateReturn windows appear as prices become available.
Pre-filing1mo ago -16.2%1w ago -15.0%1d ago -4.7%
Returns since7d -21.9%30d -24.1%90d180d1y
Transaction facts
Stored Form 4 columns with their raw values
- Type
- Sell Code S
- Identifier
- 0001628280-26-057485 Common Stock
- Transaction date
- Aug 14, 2026 Filed Aug 17, 2026, 10:16 PM · 3d delay
- Shares
- 1,125 sh $131.65 per share
- Estimated value
- -$148k Computed from shares × price
- Holdings after
- 490,425 sh Direct
Filing signal explanations
Badges describe filing facts only — not predictions.
Cluster 14dRepeat 30dPattern $100kLarge $1.00M
Direct Ownership Repeat Seller 10b5-1 Detected
Filing-only score
-4 points
Compact filing score computed from stored Form 4 facts. Version v1.
Neutral filing signal
This filing is broadly neutral on the filing-only scale. The Form 4 facts do not strongly tilt positive or negative.
How this score is calculated
- direct_ownership+6 points
direct_or_indirect_ownership = D
Direct ownership reports the insider's personal stake. - tenb5_1_detected-10 points
is_10b5_1 = true
Stored filing content includes detected 10b5-1 language.
Signed filing-only points, not a probability or expected return. Version v1.
Reported relationships & other filings
Form 4 relationship flags and nearby filing context
Reported roles
CEO
Officer YesDirector Yes10% NoOther No
Footnotes & amended
- F1
The reported sale of shares occurred automatically pursuant to a Rule 10b5-1 trading plan adopted on August 19, 2025.
- F2
Price represents the weighted average sale price for the transaction reported. Price range of shares sold is $128.14 through $129.01. Reporting person undertakes to provide upon request by the
- (5 footnotes)
SEC staff or a security holder of the Issuer, full information regarding the number of shares sold at each separate price.
- F3
Price represents the weighted average sale price for the transaction reported. Price range of shares sold is $129.29 through $129.80. Reporting person undertakes to provide upon request by the
- F4
Price represents the weighted average sale price for the transaction reported. Price range of shares sold is $130.255 through $131.00. Reporting person undertakes to provide upon request by the
- F5
Price represents the weighted average sale price for the transaction reported. Price range of shares sold is $131.30 through $131.75. Reporting person undertakes to provide upon request by the
- F6
Price represents the weighted average sale price for the transaction reported. Price range of shares sold is $132.17 through $132.95. Reporting person undertakes to provide upon request by the
- F7
Price represents the weighted average sale price for the transaction reported. Price range of shares sold is $133.255 through $133.53. Reporting person undertakes to provide upon request by the SEC st…
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