# EDGAR Filing Document

**Accession Number:** 0000891532
**File Stem:** 0001493152-23-000264
**Filing Date:** 2023-1
**Character Count:** 8207
**Document Hash:** 0d7657841cc33a34cff7b19181a7dbad
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001493152-23-000264.hdr.sgml**: 20230104

**ACCESSION NUMBER**: 0001493152-23-000264

**CONFORMED SUBMISSION TYPE**: 4

**PUBLIC DOCUMENT COUNT**: 1

**CONFORMED PERIOD OF REPORT**: 20230103

**FILED AS OF DATE**: 20230104

**DATE AS OF CHANGE**: 20230104

**REPORTING-OWNER**: 

**OWNER DATA:**
- **COMPANY CONFORMED NAME:** ZWECKER MARK A
- **CENTRAL INDEX KEY:** 0001256439

**FILING VALUES:**
- **FORM TYPE:** 4
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-11596
- **FILM NUMBER:** 23504985

**MAIL ADDRESS:**
- **STREET 1:** 8302 DUNWOODY PLACE
- **STREET 2:** SUITE 250
- **CITY:** ATLANTA
- **STATE:** GA
- **ZIP:** 30350
**ISSUER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** PERMA FIX ENVIRONMENTAL SERVICES INC
- **CENTRAL INDEX KEY:** 0000891532
- **STANDARD INDUSTRIAL CLASSIFICATION:** HAZARDOUS WASTE MANAGEMENT [4955]
- **IRS NUMBER:** 581954497
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**BUSINESS ADDRESS:**
- **STREET 1:** 8302 DUNWOODY PLACE
- **STREET 2:** SUITE 250
- **CITY:** ATLANTA
- **STATE:** GA
- **ZIP:** 30350
- **BUSINESS PHONE:** 7705879898

**MAIL ADDRESS:**
- **STREET 1:** 8302 DUNWOODY PLACE
- **STREET 2:** SUITE 250
- **CITY:** ATLANTA
- **STATE:** GA
- **ZIP:** 30350

### 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>ZWECKER MARK A<br><sub>(Last) (First) (Middle)</sub><br>8302 DUNWOODY PLACE,<br>SUITE 250<br><sub>(Street)</sub><br>ATLANTA,, GA 30350<br><sub>(City) (State) (Zip)</sub> | **3. Date of Earliest Transaction (Month/Day/Year)**<br>2023-01-03 | **5. Relationship of Reporting Person(s) to Issuer**<br>(Check all applicable)<br>[X] Director [ ] 10% Owner<br>[ ] Officer (give title below) [ ] Other (specify below)<br>_ _ |
| **2. Issuer Name and Ticker or Trading Symbol**<br>PERMA FIX ENVIRONMENTAL SERVICES INC [ PESI ] | **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 | 2023-01-03 |  | A |  | 4603 | A | $2.6475 | 216193 | 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 | $2.7850 |  |  |  |  |  |  | <sup>(1)</sup> | 2023-09-12 | Common Stock | 2400 |  | 2400 | D |  |
| Stock Option | $3.7000 |  |  |  |  |  |  | <sup>(2)</sup> | 2024-09-18 | Common Stock | 2400 |  | 2400 | D |  |
| Stock Option | $4.1900 |  |  |  |  |  |  | <sup>(3)</sup> | 2025-09-17 | Common Stock | 2400 |  | 2400 | D |  |
| Stock Option | $4.6000 |  |  |  |  |  |  | <sup>(4)</sup> | 2026-07-28 | Common Stock | 2400 |  | 2400 | D |  |
| Stock Option | $3.5500 |  |  |  |  |  |  | <sup>(5)</sup> | 2027-07-27 | Common Stock | 2400 |  | 2400 | D |  |
| Stock Option | $4.3000 |  |  |  |  |  |  | <sup>(6)</sup> | 2028-07-26 | Common Stock | 2400 |  | 2400 | D |  |
| Stock Option | $3.3100 |  |  |  |  |  |  | <sup>(7)</sup> | 2029-07-25 | Common Stock | 2400 |  | 2400 | D |  |
| Stock Option | $6.7000 |  |  |  |  |  |  | <sup>(8)</sup> | 2030-07-22 | Common Stock | 2400 |  | 2400 | D |  |
| Stock Option | $5.9300 |  |  |  |  |  |  | <sup>(9)</sup> | 2031-07-20 | Common Stock | 10000 |  | 10000 | D |  |
| Stock Option | $7.0500 |  |  |  |  |  |  | <sup>(10)</sup> | 2032-07-21 | Common Stock | 10000 |  | 10000 | D |  |

---

### Footnotes:

(1) Non-Qualified Stock Option granted 09/12/2013 under the Company's 2003 Outside Directors Stock Plan. The Option vests fully six months from date of grant.

(2) Non-Qualified Stock Option granted 09/18/2014 under the Company's 2003 Outside Directors Stock Plan. The Option vests fully six months from date of grant.

(3) Non-Qualified Stock Option granted 09/17/2015 under the Company's 2003 Outside Directors Stock Plan. The Option vests fully six months from date of grant.

(4) Non-Qualified Stock Option granted 07/28/2016 under the Company's 2003 Outside Directors Stock Plan. The Option vests fully six months from date of grant.

(5) Non-Qualified Stock Option granted 07/27/2017 under the Company's 2003 Outside Directors Stock Plan. The Option vests fully six months from date of grant.

(6) Non-Qualified Stock Option granted 07/26/2018 under the Company's 2003 Outside Directors Stock Plan. The Option vests fully six months from date of grant.

(7) Non-Qualified Stock Option granted 07/25/2019 under the Company's 2003 Outside Directors Stock Plan. The Option vests fully six months from date of grant.

(8) Non-Qualified Stock Option granted 07/22/2020 under the Company's 2003 Outside Directors Stock Plan. The Option vests fully six months from date of grant.

(9) Non-Qualified Stock Option granted 07/20/2021 under the Company's 2003 Outside Directors Stock Plan. The Option vests over a four year period, at 1/4 increment per year.

(10) Non-Qualified Stock Option granted 07/21/2022 under the Company's 2003 Outside Directors Stock Plan. The Option vests over a four year period, at 1/4 increment per year.

**Signature:** /s/ Mark Zwecker  
**Date:** 2023-01-04

### 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.**