# EDGAR Filing Document

**Accession Number:** 0001832487
**File Stem:** 0001437749-25-035584
**Filing Date:** 2025-11
**Character Count:** 7470
**Document Hash:** e1396b1ea7c732b66ef2123dc33da927
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001437749-25-035584.hdr.sgml**: 20251118

**ACCESSION NUMBER**: 0001437749-25-035584

**CONFORMED SUBMISSION TYPE**: 4

**PUBLIC DOCUMENT COUNT**: 1

**CONFORMED PERIOD OF REPORT**: 20251117

**FILED AS OF DATE**: 20251118

**DATE AS OF CHANGE**: 20251118

**REPORTING-OWNER**: 

**OWNER DATA:**
- **COMPANY CONFORMED NAME:** Chong Kellie Hyon-Ok
- **CENTRAL INDEX KEY:** 0001909330

**ORGANIZATION NAME:**

**FILING VALUES:**
- **FORM TYPE:** 4
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 000-56238
- **FILM NUMBER:** 251494238

**MAIL ADDRESS:**
- **STREET 1:** 6021 BECKENHAM WAY
- **CITY:** OAK RIDGE
- **STATE:** NC
- **ZIP:** 27310
**ISSUER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Guerrilla RF, Inc.
- **CENTRAL INDEX KEY:** 0001832487
- **STANDARD INDUSTRIAL CLASSIFICATION:** SEMICONDUCTORS & RELATED DEVICES [3674]
- **ORGANIZATION NAME:** 04 Manufacturing
- **EIN:** 853837067
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**BUSINESS ADDRESS:**
- **STREET 1:** 2000 PISGAH CHURCH ROAD
- **CITY:** GREENSBORO
- **STATE:** NC
- **ZIP:** 27455
- **BUSINESS PHONE:** 3365107840

**MAIL ADDRESS:**
- **STREET 1:** 2000 PISGAH CHURCH ROAD
- **CITY:** GREENSBORO
- **STATE:** NC
- **ZIP:** 27455

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** Laffin Acquisition Corp.
- **DATE OF NAME CHANGE:** 20201116

### 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>Chong Kellie Hyon-Ok<br><sub>(Last) (First) (Middle)</sub><br>6021 BECKENHAM WAY<br><sub>(Street)</sub><br>OAK RIDGE, NC 27310<br><sub>(City) (State) (Zip)</sub> | **3. Date of Earliest Transaction (Month/Day/Year)**<br>2025-11-17 | **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>_Chief Business Officer_ |
| **2. Issuer Name and Ticker or Trading Symbol**<br>Guerrilla RF, Inc. [ GUER ] | **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 |  |  |  |  |  |  |  | 4804 | I | See footnote.<sup>(1)</sup> |
| Common Stock |  |  |  |  |  |  |  | 14229 | 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 |
| Restricted Stock Unit | <sup>(2)</sup> |  |  |  |  |  |  | <sup>(3)</sup> | <sup>(4)</sup> | Common Stock | 4167 |  | 4167 | D |  |
| Stock Option | $12 |  |  |  |  |  |  | <sup>(5)</sup> | 2032-02-21 | Common Stock | 21667 |  | 21667 | D |  |
| Restricted Stock Unit | <sup>(2)</sup> |  |  |  |  |  |  | <sup>(6)</sup> | <sup>(4)</sup> | Common Stock | 11793 |  | 11793 | D |  |
| Stock Option | $3.05 | 2025-11-17 |  | A |  | 25000 |  | <sup>(7)</sup> | 2035-11-17 | Common Stock | 25000 | $0 | 25000 | D |  |

---

### Footnotes:

(1) Represents the Reporting Person's proportionate pecuniary interest in the 24,016 shares of common stock held directly by Ninth Technology, LLC ("Ninth Technology"). The Reporting Person is a member and manager of Ninth Technology. The Reporting Person disclaims beneficial ownership of the shares held by Ninth Technology except to the extent of her proportionate pecuniary interest therein.

(2) Each restricted stock unit represents a contingent right to receive one share of common stock upon vesting of the unit.

(3) The restricted stock units vest on 1/1/2026, subject to the Reporting Person's continued service through the applicable vesting date.

(4) No expiration date.

(5) 16,250 of the shares subject to the option have vested, and the remaining shares vest on 1/24/26, subject to the Reporting Person's continued service as of such vesting date.

(6) The restricted stock units vest as follows: (i) 5,896 units on 1/1/2026; and (ii) 5,897 units on 1/1/2027, in each case subject to the Reporting Person's continued service through the applicable vesting date

(7) The options vest as follows: (i) 6,250 options on 5/21/2026; (ii) 520 options on 6/21/26, and monthly thereafter through 4/21/2029; and (iii) 550 options on 5/21/2029, in each case subject to the Reporting Person's continued service through the applicable vesting date.

**Signature:** /s/ Iain MacSween, Attorney-in-Fact  
**Date:** 2025-11-18

### 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.**