Form 144: Mike Slessor reports 61,358-share sales

Form 144 filing reporting sales of Common stock by Mike Slessor.

Rhea-AI Filing Summary

Form 144 filing reporting sales of Common stock by Mike Slessor. The filing lists three dispositions: 01/06/2026 sale of 39,606 shares for $2,574,390.00, 01/15/2026 sale of 13,088 shares for $1,005,295.82, and 02/18/2026 sale of 8,664 shares for $815,576.98. The securities previously issued as restricted stock include grants dated 05/07/2024 (3,800 shares) and 08/01/2024 (6,427 shares).

Insights

Equity Markets Analyst

Insider reported multiple sales totaling 61,358 shares across three dates.

Mike Slessor reported three sales: 39,606 shares on 01/06/2026, 13,088 shares on 01/15/2026, and 8,664 shares on 02/18/2026, with aggregate proceeds shown in the filing.

These entries are routine regulatory disclosures of dispositions of previously restricted shares. The filing lists restricted stock grant dates of 05/07/2024 (3,800 shares) and 08/01/2024 (6,427 shares); timing and motivation for the sales are not provided in the excerpt.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What sales are reported in the Form 144 for FORM?

The filing reports three sales totaling 61,358 shares. Specifically, 39,606 shares on 01/06/2026 for $2,574,390.00, 13,088 shares on 01/15/2026 for $1,005,295.82, and 8,664 shares on 02/18/2026 for $815,576.98.

Who is the reporting person on this Form 144?

The reporting person is Mike Slessor. The filing lists his address as 7005 Southfront Road, Livermore, CA 94551 and shows the three dispositions with dates and proceeds as reported in the excerpt.

Were the sold shares originally issued as restricted stock?

The excerpt lists restricted stock grant dates and amounts. It shows restricted stock grants dated 05/07/2024 for 3,800 shares and 08/01/2024 for 6,427 shares; the filing ties those grants to the issuer in the excerpt.

How much proceeds did the reported sales generate?

Aggregate proceeds shown equal $4,395,262.80. This total is the sum of the three reported proceeds: $2,574,390.00, $1,005,295.82, and $815,576.98 as listed in the filing excerpt.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Accepted by SEC EDGAR 03/18/2026 - 04:22 PM Learn about SEC filing dates

Form 144 Filer Information	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 144 NOTICE OF PROPOSED SALE OF SECURITIES PURSUANT TO RULE 144 UNDER THE SECURITIES ACT OF 1933
FORM 144

144: Filer Information

Filer CIK	0001590177
Filer CCC	XXXXXXXX
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer	FORMFACTOR, INC.
SEC File Number	000-50307
Address of Issuer	7005 Southfront Road Livermore CALIFORNIA 94551
Phone	(925) 290-4000
Name of Person for Whose Account the Securities are To Be Sold	MIKE SLESSOR
See the definition of "person" in paragraph (a) of Rule 144. Information is to be given not only as to the person for whose account the securities are to be sold but also as to all other persons included in that definition. In addition, information shall be given as to sales by all persons whose sales are required by paragraph (e) of Rule 144 to be aggregated with sales for the account of the person filing this notice.
Relationship to Issuer	Officer
Relationship to Issuer	Director

144: Securities Information

Title of the Class of Securities To Be Sold	Name and Address of the Broker	Number of Shares or Other Units To Be Sold	Aggregate Market Value	Number of Shares or Other Units Outstanding	Approximate Date of Sale	Name the Securities Exchange
Common	Morgan Stanley Smith Barney LLC Executive Financial Services 1 New York Plaza 8th Floor New York NY 10004	10227	973087.80	77917947	03/18/2026	NASDAQ

Furnish the following information with respect to the acquisition of the securities to be sold and with respect to the payment of all or any part of the purchase price or other consideration therefor:

144: Securities To Be Sold

Title of the Class	Date you Acquired	Nature of Acquisition Transaction	Name of Person from Whom Acquired	Is this a Gift?	Date Donor Acquired	Amount of Securities Acquired	Date of Payment	Nature of Payment *
Common	08/01/2024	Restricted Stock	ISSUER			6427	08/01/2024	Not Applicable
Common	05/07/2024	Restricted Stock	ISSUER			3800	05/07/2024	Not Applicable

* If the securities were purchased and full payment therefor was not made in cash at the time of purchase, explain in the table or in a note thereto the nature of the consideration given. If the consideration consisted of any note or other obligation, or if payment was made in installments describe the arrangement and state when the note or other obligation was discharged in full or the last installment paid.

Furnish the following information as to all securities of the issuer sold during the past 3 months by the person for whose account the securities are to be sold.

144: Securities Sold During The Past 3 Months

Name and Address of Seller	Title of Securities Sold	Date of Sale	Amount of Securities Sold	Gross Proceeds
MIKE SLESSOR 7005 Southfront Road Livermore CA 94551	Common	02/18/2026	8664	815576.98
MIKE SLESSOR 7005 Southfront Road Livermore CA 94551	Common	01/15/2026	13088	1005295.82
MIKE SLESSOR 7005 Southfront Road Livermore CA 94551	Common	01/06/2026	39606	2574390.00

144: Remarks and Signature

Remarks
Date of Notice	03/18/2026
Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1	08/19/2025
ATTENTION:
The person for whose account the securities to which this notice relates are to be sold hereby represents by signing this notice that he does not know any material adverse information in regard to the current and prospective operations of the Issuer of the securities to be sold which has not been publicly disclosed. If such person has adopted a written trading plan or given trading instructions to satisfy Rule 10b5-1 under the Exchange Act, by signing the form and indicating the date that the plan was adopted or the instruction given, that person makes such representation as of the plan adoption or instruction date.
Signature	/s/ Mike (Michael) David Slessor
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)