# EDGAR Filing Document

**Accession Number:** 0001823023
**File Stem:** 0001437749-26-013869
**Filing Date:** 2026-4
**Character Count:** 6755
**Document Hash:** 262f7a933f62aec8d31f7e6a9614d673
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001437749-26-013869.hdr.sgml**: 20260429

**ACCESSION NUMBER**: 0001437749-26-013869

**CONFORMED SUBMISSION TYPE**: 4/A

**PUBLIC DOCUMENT COUNT**: 1

**CONFORMED PERIOD OF REPORT**: 20260409

**FILED AS OF DATE**: 20260429

**DATE AS OF CHANGE**: 20260429

**REPORTING-OWNER**: 

**OWNER DATA:**
- **COMPANY CONFORMED NAME:** Biles Linda M
- **CENTRAL INDEX KEY:** 0001823023

**ORGANIZATION NAME:**

**FILING VALUES:**
- **FORM TYPE:** 4/A
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-41391
- **FILM NUMBER:** 26916062

**MAIL ADDRESS:**
- **STREET 1:** 2525 SHADER ROAD
- **CITY:** ORLANDO
- **STATE:** FL
- **ZIP:** 32804
**ISSUER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** M-tron Industries, Inc.
- **CENTRAL INDEX KEY:** 0001902314
- **STANDARD INDUSTRIAL CLASSIFICATION:** ELECTRONIC COMPONENTS, NEC [3679]
- **ORGANIZATION NAME:** 04 Manufacturing
- **EIN:** 460457994
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**BUSINESS ADDRESS:**
- **STREET 1:** 2525 SHADER ROAD
- **CITY:** ORLANDO
- **STATE:** FL
- **ZIP:** 32804
- **BUSINESS PHONE:** (407) 298-2000

**MAIL ADDRESS:**
- **STREET 1:** 2525 SHADER ROAD
- **CITY:** ORLANDO
- **STATE:** FL
- **ZIP:** 32804

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

## FORM 4/A

### 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>Biles Linda M<br><sub>(Last) (First) (Middle)</sub><br>2525 SHADER RD<br><sub>(Street)</sub><br>ORLANDO, FL 32804<br><sub>(City) (State) (Zip)</sub> | **3. Date of Earliest Transaction (Month/Day/Year)**<br>2026-04-09 | **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>_Executive VP - Finance_ |
| **2. Issuer Name and Ticker or Trading Symbol**<br>M-tron Industries, Inc. [ MPTI ] | **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 |  |  |  |  |  |  |  | 28682 | 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 |
| Stock Option (right to buy) | $40.3200 |  |  |  |  |  |  | 2026-04-04<sup>(1)</sup> | 2030-04-04 | Common Stock | 10000 |  | 10000 | D |  |
| Subscription Rights (right to purchase) | 59<sup>(2)</sup> | 2026-04-09 |  | S |  | 24643<sup>(3)</sup> |  | 2026-03-31 | 2026-04-20 | Common Stock | 4928 | $0 | 2700 | D |  |
| Subscription Rights (right to purchase) | 59<sup>(2)</sup> | 2026-04-14 |  | S |  | 2700 |  | 2026-03-31 | 2026-04-20 | Common Stock | 540 | $0 | 0<sup>(3)</sup> | D |  |

---

### Footnotes:

(1) Grant of a stock option of the Issuer vesting as follows: 30% on 4/4/2026, 30% on 4/4/2027, and 40% on 4/4/2028.

(2) On March 30, 2026, holders of the Issuer's common stock, par value $0.01 per share (the "Common Stock"), received one subscription right (the "Rights") for each share of Common Stock held by such holder as of March 27, 2026. When exercisable, five (5) Rights will entitle their holder to purchase one share of Common Stock at an exercise price of $59.00 per share.

(3) The original Form 4, filed on April 16, 2026, is being amended by this Form 4/A solely to add a sale of the Rights in Table II on April 9, 2026, which was inadvertently omitted from the original filing. As a result of that omission, the amount of securities beneficially owned following the transaction reported on Line 3 of Table II has also been corrected to reflect the accurate, adjusted ending balance.

**Signature:** /s/ Linda Biles  
**Date:** 2026-04-29

### 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.**