# EDGAR Filing Document

**Accession Number:** 0001034584
**File Stem:** 0001140361-26-010773
**Filing Date:** 2026-3
**Character Count:** 9150
**Document Hash:** 57476e6d0b1924680e48baed7c441554
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001140361-26-010773.hdr.sgml**: 20260323

**ACCESSION NUMBER**: 0001140361-26-010773

**CONFORMED SUBMISSION TYPE**: 4

**PUBLIC DOCUMENT COUNT**: 1

**CONFORMED PERIOD OF REPORT**: 20260310

**FILED AS OF DATE**: 20260323

**DATE AS OF CHANGE**: 20260323

**REPORTING-OWNER**: 

**OWNER DATA:**
- **COMPANY CONFORMED NAME:** GENERAL ATOMIC TECHNOLOGIES CORP
- **CENTRAL INDEX KEY:** 0001034584

**ORGANIZATION NAME:**

**FILING VALUES:**
- **FORM TYPE:** 4
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-34852
- **FILM NUMBER:** 26783098

**BUSINESS ADDRESS:**
- **STREET 1:** 3550 GENERAL ATOMICS CT.
- **CITY:** SAN DIEGO
- **STATE:** CA
- **ZIP:** 92121
- **BUSINESS PHONE:** 6194552151
**REPORTING-OWNER**: 

**OWNER DATA:**
- **COMPANY CONFORMED NAME:** Synchron
- **CENTRAL INDEX KEY:** 0001719869

**ORGANIZATION NAME:**

**FILING VALUES:**
- **FORM TYPE:** 4
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-34852
- **FILM NUMBER:** 26783099

**BUSINESS ADDRESS:**
- **STREET 1:** 3550 GENERAL ATOMICS COURT
- **CITY:** SAN DIEGO
- **STATE:** CA
- **ZIP:** 92121
- **BUSINESS PHONE:** 858 455 3000

**MAIL ADDRESS:**
- **STREET 1:** 3550 GENERAL ATOMICS COURT
- **CITY:** SAN DIEGO
- **STATE:** CA
- **ZIP:** 92121
**REPORTING-OWNER**: 

**OWNER DATA:**
- **COMPANY CONFORMED NAME:** Tenaya Corp
- **CENTRAL INDEX KEY:** 0001715926

**ORGANIZATION NAME:**

**FILING VALUES:**
- **FORM TYPE:** 4
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-34852
- **FILM NUMBER:** 26783097

**BUSINESS ADDRESS:**
- **STREET 1:** 3550 GENERAL ATOMICS COURT
- **CITY:** SAN DIEGO
- **STATE:** CA
- **ZIP:** 92121
- **BUSINESS PHONE:** 858 455 3000

**MAIL ADDRESS:**
- **STREET 1:** 3550 GENERAL ATOMICS COURT
- **CITY:** SAN DIEGO
- **STATE:** CA
- **ZIP:** 92121
**ISSUER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** RARE ELEMENT RESOURCES LTD
- **CENTRAL INDEX KEY:** 0001419806
- **STANDARD INDUSTRIAL CLASSIFICATION:** GOLD & SILVER ORES [1040]
- **ORGANIZATION NAME:** 01 Energy & Transportation
- **EIN:** 000000000
- **STATE OF INCORPORATION:** A1
- **FISCAL YEAR END:** 1231

**BUSINESS ADDRESS:**
- **STREET 1:** P.O. BOX 271049
- **CITY:** LITTLETON
- **STATE:** CO
- **ZIP:** 80127
- **BUSINESS PHONE:** 720-278-2460

**MAIL ADDRESS:**
- **STREET 1:** P.O. BOX 271049
- **CITY:** LITTLETON
- **STATE:** CO
- **ZIP:** 80127

### 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>Synchron<br><sub>(Last) (First) (Middle)</sub><br>3550 GENERAL ATOMICS COURT<br><sub>(Street)</sub><br>SAN DIEGO, CA 92121<br><sub>(City) (State) (Zip)</sub> | **3. Date of Earliest Transaction (Month/Day/Year)**<br>2026-03-10 | **5. Relationship of Reporting Person(s) to Issuer**<br>(Check all applicable)<br>[ ] Director [X] 10% Owner<br>[ ] Officer (give title below) [ ] Other (specify below)<br>_ _ |
| **2. Issuer Name and Ticker or Trading Symbol**<br>RARE ELEMENT RESOURCES LTD [ REEMF ] | **4. If Amendment, Date of Original Filed (Month/Day/Year)**<br>  | **6. Individual or Joint/Group Filing (Check Applicable Line)**<br>[ ] Form filed by One Reporting Person<br>[X] Form filed by More than One Reporting Person |

---

---

| | | |
|:---|:---|:---|
| **1. Name and Address of Reporting Person**<sup>*</sup><br>GENERAL ATOMIC TECHNOLOGIES CORP<br><sub>(Last) (First) (Middle)</sub><br>3550 GENERAL ATOMICS COURT,<br><sub>(Street)</sub><br>SAN DIEGO,, CA 92121-1122<br><sub>(City) (State) (Zip)</sub> | **3. Date of Earliest Transaction (Month/Day/Year)**<br>2026-03-10 | **5. Relationship of Reporting Person(s) to Issuer**<br>(Check all applicable)<br>[ ] Director [X] 10% Owner<br>[ ] Officer (give title below) [X] Other (specify below)<br>_See Remarks_ |
| **2. Issuer Name and Ticker or Trading Symbol**<br>RARE ELEMENT RESOURCES LTD [ REEMF ] | **4. If Amendment, Date of Original Filed (Month/Day/Year)**<br>  | **6. Individual or Joint/Group Filing (Check Applicable Line)**<br>[ ] Form filed by One Reporting Person<br>[X] Form filed by More than One Reporting Person |

---

---

| | | |
|:---|:---|:---|
| **1. Name and Address of Reporting Person**<sup>*</sup><br>Tenaya Corp<br><sub>(Last) (First) (Middle)</sub><br>3550 GENERAL ATOMICS COURT,<br><sub>(Street)</sub><br>SAN DIEGO,, CA 92121-1122<br><sub>(City) (State) (Zip)</sub> | **3. Date of Earliest Transaction (Month/Day/Year)**<br>2026-03-10 | **5. Relationship of Reporting Person(s) to Issuer**<br>(Check all applicable)<br>[ ] Director [X] 10% Owner<br>[ ] Officer (give title below) [X] Other (specify below)<br>_See Remarks_ |
| **2. Issuer Name and Ticker or Trading Symbol**<br>RARE ELEMENT RESOURCES LTD [ REEMF ] | **4. If Amendment, Date of Original Filed (Month/Day/Year)**<br>  | **6. Individual or Joint/Group Filing (Check Applicable Line)**<br>[ ] Form filed by One Reporting Person<br>[X] 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 Shares | 2026-03-10 |  | P |  | 100149060 | A | $24035774.4 | 460889576 | D<sup>(1)</sup> |  |

---

## 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 |
|  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |

---

### Footnotes:

(1) The Common Shares are held of record by Synchron, a wholly-owned subsidiary of General Atomic Technologies Corporation ("GATC"), which is a wholly-owned subsidiary of Tenaya Corporation ("Tenaya").

**Remarks:**
GATC may be deemed to beneficially own all of the Common Shares beneficially owned by Synchron as its sole shareholder. Tenaya may be deemed to beneficially own all of the Common Shares beneficially owned by Synchron as the sole shareholder of GATC.

**Signature:** SYNCHRON /s/ Kristopher S. George Name: Kristopher S. George Title: Assistant Treasurer  
**Date:** 2026-03-23

**Signature:** GENERAL ATOMIC TECHNOLOGIES CORPORATION /s/ Kristopher S. George Name: Kristopher S. George Title: Assistant Treasurer  
**Date:** 2026-03-23

**Signature:** TENAYA CORPORATION /s/ Kristopher S. George Name: Kristopher S. George Title: Assistant Treasurer  
**Date:** 2026-03-23

### 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.**