Sell4

RICHARDSON ELECTRONICS, LTD.

RELL

Total Value

$887.6K

Net $519.2K sold

Filing Date

Aug 3, 2026

1 transaction

Sales

$519.2K

1 transaction

Trade Summary

On Jul 30, 2026, KLUGE ROBERT H, Insider, sold $887.6K of RICHARDSON ELECTRONICS, LTD. (RELL) across 1 transaction. The filing covers Common Stock and reflects net selling of $519.2K. Reported prices ranged from $4.26 to $17.90. Insider transactions are sourced from SEC Form 4 disclosures and should be reviewed alongside company fundamentals and the insider's broader trading history.

Price at the Time of the Trade

RELL daily price with the insider's sale marked at $17.90.

Sold in the upper half of the 6-month range · the stock trades 6% higher today.

Price data is delayed and provided for context only — not investment advice.

Insider Information

Name: KLUGE ROBERT H
Role: Insider
Location: LAFOX, IL

Filing Details

Filing Date: Aug 3, 2026
Transaction Date: Jul 30, 2026
Accession Number: 0001193125-26-329667
Form Type: 4
Net Trading Amount: -$519.2K

Non-Derivative Transactions

Date	Security	Shares	Price	Type	Value
Jul 30, 2026	Common Stock	10,000	$5.87	Exercise	$58.7K
Jul 30, 2026	Common Stock	5,000	$9.10	Exercise	$45.5K
Jul 30, 2026	Common Stock	5,000	$5.61	Exercise	$28.1K
Jul 30, 2026	Common Stock	5,000	$4.26	Exercise	$21.3K
Jul 30, 2026	Common Stock	4,000	$7.66	Exercise	$30.6K
Jul 30, 2026	Common Stock	29,000	$17.90	Sale	$519.2K

Derivative Transactions

Date	Security	Shares	Exercise Price	Type	Value
Jul 30, 2026	RELL derivative	10,000	$5.87	Exercise	$58.7K
Jul 30, 2026	RELL derivative	5,000	$9.10	Exercise	$45.5K
Jul 30, 2026	RELL derivative	5,000	$5.61	Exercise	$28.1K
Jul 30, 2026	RELL derivative	5,000	$4.26	Exercise	$21.3K
Jul 30, 2026	RELL derivative	4,000	$7.66	Exercise	$30.6K

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Footnotes

(F1)Options Vest 20% per year, beginning 10/09/2018
(F2)Options vest 20% per year, beginning 08/20/2019
(F3)Options vest 20% per year, beginning 07/22/2020
(F4)Options vest 20% per year, beginning 07/21/2021
(F5)Options vest 20% per year, beginning 07/19/2022
(F6)The reported price in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $ 17.90 to $ 17.95 per share, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the issuer, or the staff of the Securities Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

KLUGE ROBERT H

(Last)

(First)

(Middle)

40W267 KESLINGER ROAD PO BOX 393

(Street)

LAFOX

60147

(City)

(State)

(Zip)

2. Issuer Name and Ticker or Trading Symbol
RICHARDSON ELECTRONICS, LTD. [ RELL ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director	10% Owner
	Officer (give title below)	Other (specify below)

3. Date of Earliest Transaction (Month/Day/Year)
07/30/2026

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	Amount	(A) or (D)	Price		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
Common Stock	07/30/2026		M		10,000	A	$5.87	61,365	D
Common Stock	07/30/2026		M		5,000	A	$9.1	66,365	D
Common Stock	07/30/2026		M		5,000	A	$5.61	71,365	D
Common Stock	07/30/2026		M		5,000	A	$4.26	76,365	D
Common Stock	07/30/2026		M		4,000	A	$7.66	80,365	D
Common Stock	07/30/2026		S		29,000	D	$17.9029⁽⁶⁾	51,365	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	8. Price of Derivative Security (Instr. 5)		10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
Employee Stock Option (Right to Buy)	$5.87	07/30/2026		M			10,000	⁽¹⁾	10/09/2027	Common Stock	10,000	$0	0	D
Employee Stock Option (Right to Buy)	$9.1	07/30/2026		M			5,000	⁽²⁾	08/20/2028	Common Stock	5,000	$0	0	D
Employee Stock Option (Right to Buy)	$5.61	07/30/2026		M			5,000	⁽³⁾	07/22/2029	Common Stock	5,000	$0	0	D
Employee Stock Option (Right to Buy)	$4.26	07/30/2026		M			5,000	⁽⁴⁾	07/21/2030	Common Stock	5,000	$0	0	D
Employee Stock Option (Right to Buy)	$7.66	07/30/2026		M			4,000	⁽⁵⁾	07/19/2031	Common Stock	4,000	$0	1,000	D

Explanation of Responses:

1. Options Vest 20% per year, beginning 10/09/2018

2. Options vest 20% per year, beginning 08/20/2019

3. Options vest 20% per year, beginning 07/22/2020

4. Options vest 20% per year, beginning 07/21/2021

5. Options vest 20% per year, beginning 07/19/2022

6. The reported price in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $ 17.90 to $ 17.95 per share, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the issuer, or the staff of the Securities Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

	/s/ Robert J. Ben, attorney-in-fact for Robert H Kluge	08/03/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.

Form 4 as rendered by the SEC from accession 0001193125-26-329667.

RICHARDSON ELECTRONICS, LTD.

Trade Summary

Price at the Time of the Trade

Company Information

Insider Information

Filing Details

Non-Derivative Transactions

Derivative Transactions

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Footnotes

SEC Form 4

SEC Filing

Price at the Time of the Trade

SEC Form 4