Richardson Electronics officer plans $744K sale

Fidelity Brokerage Services LLC is identified as broker for the proposed transaction, with an approximate sale date of October 13, 2026.

Rhea-AI Filing Summary

Richardson Electronics, Ltd. officer Wendy Diddell reported plans to sell 38,993 common shares, with an aggregate market value of $743,986.44. The approximate sale date is October 13, 2026, and Fidelity Brokerage Services LLC is identified as the broker.

Diddell also reported selling 23,901 shares on August 4, 2026, for an aggregate market value of $477,975.88 during the preceding three months.

Key Figures

Common shares proposed for sale: 38,993 shares Aggregate market value of proposed sale: $743,986.44 Shares sold in preceding three months: 23,901 shares +1 more

4 metrics

Common shares proposed for sale 38,993 shares Approximate sale date October 13, 2026

Aggregate market value of proposed sale $743,986.44 Proposed sale

Shares sold in preceding three months 23,901 shares Sale on August 4, 2026

Aggregate market value of prior sale $477,975.88 Sale on August 4, 2026

Key Terms

Rule 144, Stock Award, Stock option exercise

3 terms

Rule 144 regulatory

"paragraph (a) of Rule 144"

Rule 144 is a U.S. securities regulation that sets conditions under which restricted or insider-held shares can be legally resold to the public, such as required holding periods, availability of public information, limits on how much can be sold at once, and certain filing requirements. For investors it matters because it determines when previously locked-up shares can enter the market — like a release valve that can increase supply, affect share price, and signal insider intent.

Stock Award financial

"Stock Award | Issuer"

Stock option exercise financial

"Stock option exercise | Issuer"

A stock option exercise is the act of using a previously granted right to buy shares of a company's stock at a specific, predetermined price by paying that price and receiving the shares. It matters to investors because exercising changes who owns the shares (which can dilute existing ownership), can trigger taxable events and shift potential gains or losses, and affects voting power and the company’s outstanding share count—like turning a voucher into an actual product that becomes part of circulating supply.

FAQ

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

How many RELL shares does Wendy Diddell plan to sell?

Wendy Diddell reported plans to sell 38,993 common shares, with an aggregate market value of $743,986.44. The approximate sale date is October 13, 2026, and Fidelity Brokerage Services LLC is identified as broker.

How many RELL shares did Wendy Diddell sell in the prior three months?

Wendy Diddell reported selling 23,901 shares on August 4, 2026, for an aggregate market value of $477,975.88.

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

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Available on EDGAR 10/13/2026 - 04:20 PM EDT Accepted by SEC EDGAR 10/13/2026 - 04:20 PM EDT 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	0001291981
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	RICHARDSON ELECTRONICS, LTD.
SEC File Number	000-12906
Address of Issuer	40W267 KESLINGER RD PO BOX 393 LAFOX ILLINOIS 60147
Phone	630 208-2200
Name of Person for Whose Account the Securities are To Be Sold	Diddell Wendy
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

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	Fidelity Brokerage Services LLC 245 Summer Street Boston MA 02110	38993	743986.44	12841072	10/13/2026	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	07/22/2020	Stock Award	Issuer			3391	07/22/2020	Compensation
Common	07/19/2022	Stock Award	Issuer			3602	07/19/2022	Compensation
Common	07/22/2019	Stock option exercise	Issuer			4000	07/22/2019	Compensation
Common	07/19/2022	Stock option exercise	Issuer			16000	07/19/2022	Compensation
Common	07/19/2023	Stock option exercise	Issuer			12000	07/19/2023	Compensation

* 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
Wendy S Diddell 40w267 keslinger road lafox IL 60147	Richardson Electronics Ltd	08/04/2026	23901	477975.88

144: Remarks and Signature

Remarks
Date of Notice	10/13/2026
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/ Christian Nasser as a duly authorized representative of Fidelity Brokerage Services LLC, as attorney-in-fact for Wendy Diddell
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)