Transaction · 0001628280-26-019545

SLESSOR MIKE

SLESSOR MIKE, CEO, reported an open-market or private sale at FORMFACTOR INC involving 5495.000000 shares for an estimated $523178.95. Reported holdings after the transaction were 463691.000000 shares. The stored filing text includes a detected 10b5-1 reference.

Open-market sellSEC transaction code SCEO
FORMFORMFACTOR INC
Filing timeMar 18
Trade dateMar 18, 2026
Filing · SECView on SEC
InsiderProfile

Price performance since filing

Close on the filing date, the pre-filing context, and the forward return at standard windows
Price at filing
$96.18
Pre-filing
1mo ago +0.6%1w ago -4.5%1d ago -1.5%
Returns since
7d +12.4%30d +42.7%90d +45.8%180d +12.7%1y +12.7%

FORM price since this filing

30 days of pre-filing context and vertical markers at the filing date plus 7d / 30d / 90d / 180d / 1y afterwards
FORM since 2026-03-18Filed 171 days ago · 30 days of pre-filing context shaded
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Filing datePost-filing windows (7d, 30d, 90d, 180d, 1y)30 days of pre-filing context

Transaction facts

Stored Form 4 columns with their raw values

Non-derivative
Type
Sell
Code S
Identifier
0001628280-26-019545
Common Stock
Transaction date
Mar 18, 2026
Filed Mar 18, 2026, 12:00 AM · 0d delay
Shares
5.49k sh
$9.52k per share
Estimated value
-$52.3M
Computed from shares × price
Holdings after
463k sh
Direct

Filing signal explanations

Badges describe filing facts only — not predictions.

Cluster 14dRepeat 30dPattern $10.0MLarge $100M
Cluster Selling Direct Ownership Large Sale Repeat Seller 10b5-1 Detected
0score
Filing-only score

0

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.

Reported relationships & other filings

Form 4 relationship flags and nearby filing context

Reported roles

CEO

Officer YesDirector Yes10% NoOther No
Footnotes & amended
  1. F1

    The reported sale of shares occurred automatically pursuant to a Rule 10b5-1 trading plan adopted on August 19, 2025.

  2. F2

    Price represents the weighted average sale price for the transaction reported. Price range of shares sold is $93.63 through $94.48. Reporting person undertakes to provide upon request by the SEC

  3. (3 footnotes)

    staff or a security holder of the Issuer, full information regarding the number of shares sold at each separate price.

  4. F3

    Price represents the weighted average sale price for the transaction reported. Price range of shares sold is $94.77 through $95.60. Reporting person undertakes to provide upon request by the SEC

  5. F4

    Price represents the weighted average sale price for the transaction reported. Price range of shares sold is $95.66 through $95.87. Reporting person undertakes to provide upon request by the SEC

Original filing · 0001628280-26-019545
Related transactions

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Same reporting owner
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FORM