# EDGAR Filing Document

**Accession Number:** 0001690429
**File Stem:** 0001193125-26-029164
**Filing Date:** 2026-1
**Character Count:** 6907
**Document Hash:** 9e4a53af346f7aa62b684c4ae8faf3fa
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001193125-26-029164.hdr.sgml**: 20260129

**ACCESSION NUMBER**: 0001193125-26-029164

**CONFORMED SUBMISSION TYPE**: 4

**PUBLIC DOCUMENT COUNT**: 1

**CONFORMED PERIOD OF REPORT**: 20260127

**FILED AS OF DATE**: 20260129

**DATE AS OF CHANGE**: 20260129

**REPORTING-OWNER**: 

**OWNER DATA:**
- **COMPANY CONFORMED NAME:** Ruppert Jens Frank
- **CENTRAL INDEX KEY:** 0001690429

**ORGANIZATION NAME:**

**FILING VALUES:**
- **FORM TYPE:** 4
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 000-12906
- **FILM NUMBER:** 26577471

**MAIL ADDRESS:**
- **STREET 1:** 40W267 KESLINGER ROAD, P.O. BOX 393
- **CITY:** LAFOX
- **STATE:** IL
- **ZIP:** 60147
**ISSUER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** RICHARDSON ELECTRONICS, LTD.
- **CENTRAL INDEX KEY:** 0000355948
- **STANDARD INDUSTRIAL CLASSIFICATION:** WHOLESALE-ELECTRONIC PARTS & EQUIPMENT, NEC [5065]
- **ORGANIZATION NAME:** 07 Trade & Services
- **EIN:** 362096643
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 0530

**BUSINESS ADDRESS:**
- **STREET 1:** 40W267 KESLINGER RD
- **STREET 2:** PO BOX 393
- **CITY:** LAFOX
- **STATE:** IL
- **ZIP:** 60147
- **BUSINESS PHONE:** 630 208-2200

**MAIL ADDRESS:**
- **STREET 1:** 40W267 KESLINGER ROAD
- **STREET 2:** P.O. BOX 393
- **CITY:** LAFOX
- **STATE:** IL
- **ZIP:** 60147

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** RICHARDSON ELECTRONICS LTD/DE
- **DATE OF NAME CHANGE:** 19920703

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

## FORM 4

### STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

[ ] 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**<sup>*</sup><br>Ruppert Jens Frank<br><sub>(Last) (First) (Middle)</sub><br>40W267 KESLINGER ROAD PO BOX 393<br><sub>(Street)</sub><br>LAFOX, IL 60147<br><sub>(City) (State) (Zip)</sub> | **3. Date of Earliest Transaction (Month/Day/Year)**<br>2026-01-27 | **5. Relationship of Reporting Person(s) to Issuer**<br>(Check all applicable)<br>[ ] Director [ ] 10% Owner<br>[X] Officer (give title below) [ ] Other (specify below)<br>_EVP Canvys_ |
| **2. Issuer Name and Ticker or Trading Symbol**<br>RICHARDSON ELECTRONICS, LTD. [ RELL ] | **4. If Amendment, Date of Original Filed (Month/Day/Year)**<br>  | **6. Individual or Joint/Group Filing (Check Applicable Line)**<br>[X] Form filed by One Reporting Person<br>[ ] Form filed by More than One Reporting Person |

---

## Table I - Non-Derivative Securities

---

|  |  |  |  |  |  |  |  |  |  |  |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1. Title of Security | 2. Transaction Date | 2A. Deemed Execution Date | 3. Transaction Code (V) | 3. Transaction Code (V) | 4. Securities Acquired (A) or Disposed of (D) | 4. Securities Acquired (A) or Disposed of (D) | 4. Securities Acquired (A) or Disposed of (D) | 5. Amount of Securities Beneficially Owned | 6. Ownership Form | 7. Nature of Indirect Beneficial Ownership |
| 1. Title of Security | 2. Transaction Date | 2A. Deemed Execution Date | Code | V | Amount | (A) or (D) | Price | 5. Amount of Securities Beneficially Owned | 6. Ownership Form | 7. Nature of Indirect Beneficial Ownership |
| Common Stock | 2026-01-27 |  | M |  | 6000 | A | $9.10 | 45500 | D |  |
| Common Stock | 2026-01-27 |  | M |  | 2000 | A | $5.61 | 47500 | D |  |
| Common Stock | 2026-01-27 |  | M |  | 5000 | A | $4.26 | 52500 | D |  |
| Common Stock | 2026-01-27 |  | M |  | 4000 | A | $7.66 | 56500 | D |  |
| Common Stock | 2026-01-27 |  | S |  | 8000 | D | $12.1864 | 48500 | D |  |
| Common Stock | 2026-01-27 |  | S |  | 7900 | D | $12.00 | 40600 | D |  |
| Common Stock | 2026-01-27 |  | S |  | 1100 | D | $11.99 | 39500 | D |  |

---

## Table II - Derivative Securities

---

|  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1. Title of Derivative Security | 2. Conversion or Exercise Price | 3. Transaction Date | 3A. Deemed Execution Date | 4. Transaction Code (V) | 4. Transaction Code (V) | 5. Number of Derivative Securities Acquired (A) or Disposed of (D) | 5. Number of Derivative Securities Acquired (A) or Disposed of (D) | 6. Date Exercisable and Expiration Date | 6. Date Exercisable and Expiration Date | 7. Title and Amount of Underlying Securities | 7. Title and Amount of Underlying Securities | 8. Price of Derivative Security | 9. Number of Derivative Securities Beneficially Owned | 10. Ownership Form | 11. Nature of Indirect Beneficial Ownership |
| 1. Title of Derivative Security | 2. Conversion or Exercise Price | 3. Transaction Date | 3A. Deemed Execution Date | Code | V | (A) | (D) | Date Exercisable | Expiration Date | Title | Amount or Number of Shares | 8. Price of Derivative Security | 9. Number of Derivative Securities Beneficially Owned | 10. Ownership Form | 11. Nature of Indirect Beneficial Ownership |
| Employe Stock Option (Right to Buy) | $9.10 | 2026-01-27 |  | M |  |  | 6000 | <sup>(1)</sup> | 2028-08-20 | Common Stock | 6000 | $0 | 0 | D |  |
| Employe Stock Option (Right to Buy) | $5.61 | 2026-01-27 |  | M |  |  | 2000 | <sup>(2)</sup> | 2029-07-22 | Common Stock | 2000 | $0 | 0 | D |  |
| Employe Stock Option (Right to Buy) | $4.26 | 2026-01-27 |  | M |  |  | 5000 | <sup>(3)</sup> | 2030-07-21 | Common Stock | 5000 | $0 | 0 | D |  |
| Employe Stock Option (Right to Buy) | $7.66 | 2026-01-27 |  | M |  |  | 4000 | <sup>(4)</sup> | 2031-07-19 | Common Stock | 4000 | $0 | 1000 | D |  |

---

### Footnotes:

(1) Options vest 20% per year, beginning 08/20/2019

(2) Options vest 20% per year, beginning 07/22/2020

(3) Options vest 20% per year, beginning 07/21/2021

(4) Options vest 20% per year, beginning 07/19/2022

**Signature:** /s/ Robert J. Ben, attorney-in-fact Jens F. Ruppert  
**Date:** 2026-01-29

### Remarks:

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.**