# EDGAR Filing Document

**Accession Number:** 0001769663
**File Stem:** 0001437749-25-037814
**Filing Date:** 2025-12
**Character Count:** 7648
**Document Hash:** 3f392e96a8dc5eec46e8db43681d8ad7
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001437749-25-037814.hdr.sgml**: 20251215

**ACCESSION NUMBER**: 0001437749-25-037814

**CONFORMED SUBMISSION TYPE**: 4

**PUBLIC DOCUMENT COUNT**: 1

**CONFORMED PERIOD OF REPORT**: 20251212

**FILED AS OF DATE**: 20251215

**DATE AS OF CHANGE**: 20251215

**REPORTING-OWNER**: 

**OWNER DATA:**
- **COMPANY CONFORMED NAME:** Tomczak Jesse
- **CENTRAL INDEX KEY:** 0001781038

**ORGANIZATION NAME:**

**FILING VALUES:**
- **FORM TYPE:** 4
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-38991
- **FILM NUMBER:** 251570980

**MAIL ADDRESS:**
- **STREET 1:** 652 ALBANY SHAKER ROAD
- **CITY:** ALBANY
- **STATE:** NY
- **ZIP:** 12211
**ISSUER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Pioneer Bancorp, Inc./MD
- **CENTRAL INDEX KEY:** 0001769663
- **STANDARD INDUSTRIAL CLASSIFICATION:** SAVINGS INSTITUTIONS, NOT FEDERALLY CHARTERED [6036]
- **ORGANIZATION NAME:** 02 Finance
- **EIN:** 834274253
- **STATE OF INCORPORATION:** MD
- **FISCAL YEAR END:** 1231

**BUSINESS ADDRESS:**
- **STREET 1:** 652 ALBANY-SHAKER ROAD
- **CITY:** ALBANY
- **STATE:** NY
- **ZIP:** 12211
- **BUSINESS PHONE:** (518) 730-3999

**MAIL ADDRESS:**
- **STREET 1:** 652 ALBANY-SHAKER ROAD
- **CITY:** ALBANY
- **STATE:** NY
- **ZIP:** 12211

### 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>Tomczak Jesse<br><sub>(Last) (First) (Middle)</sub><br>652 ALBANY SHAKER ROAD<br><sub>(Street)</sub><br>ALBANY, NY 12211<br><sub>(City) (State) (Zip)</sub> | **3. Date of Earliest Transaction (Month/Day/Year)**<br>2025-12-12 | **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 and CBO_ |
| **2. Issuer Name and Ticker or Trading Symbol**<br>Pioneer Bancorp, Inc./MD [ PBFS ] | **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 | 2025-12-12 |  | S |  | 156 | D | $14.60 | 46239<sup>(1)</sup> | D |  |
| Common Stock | 2025-12-12 |  | S |  | 96 | D | $14.6050 | 46143<sup>(1)</sup> | D |  |
| Common Stock | 2025-12-12 |  | S |  | 128 | D | $14.61 | 46015<sup>(1)</sup> | D |  |
| Common Stock | 2025-12-12 |  | S |  | 339 | D | $14.62 | 45676<sup>(1)</sup> | D |  |
| Common Stock | 2025-12-12 |  | S |  | 2 | D | $14.63 | 45674<sup>(1)</sup> | D |  |
| Common Stock | 2025-12-12 |  | S |  | 62 | D | $14.64 | 45612<sup>(1)</sup> | D |  |
| Common Stock | 2025-12-12 |  | S |  | 889 | D | $14.65 | 44723<sup>(1)</sup> | D |  |
| Common Stock | 2025-12-12 |  | S |  | 277 | D | $14.66 | 44446<sup>(1)</sup> | D |  |
| Common Stock | 2025-12-12 |  | S |  | 27 | D | $14.67 | 44419<sup>(1)</sup> | D |  |
| Common Stock | 2025-12-12 |  | S |  | 624 | D | $14.68 | 43795<sup>(1)</sup> | D |  |
| Common Stock | 2025-12-12 |  | S |  | 748 | D | $14.69 | 43047<sup>(1)</sup> | D |  |
| Common Stock | 2025-12-12 |  | S |  | 401 | D | $14.70 | 42646<sup>(1)</sup> | D |  |
| Common Stock | 2025-12-12 |  | S |  | 83 | D | $14.71 | 42563<sup>(1)</sup> | D |  |
| Common Stock | 2025-12-12 |  | S |  | 294 | D | $14.72 | 42269<sup>(1)</sup> | D |  |
| Common Stock | 2025-12-12 |  | S |  | 4 | D | $14.725 | 42265<sup>(1)</sup> | D |  |
| Common Stock | 2025-12-12 |  | S |  | 128 | D | $14.73 | 42137<sup>(1)</sup> | D |  |
| Common Stock | 2025-12-12 |  | S |  | 318 | D | $14.75 | 41819<sup>(1)</sup> | D |  |
| Common Stock | 2025-12-12 |  | S |  | 548 | D | $14.76 | 41271<sup>(1)</sup> | D |  |
| Common Stock | 2025-12-12 |  | S |  | 36 | D | $14.77 | 41235<sup>(1)</sup> | D |  |
| Common Stock | 2025-12-12 |  | S |  | 200 | D | $14.78 | 41035<sup>(1)</sup> | D |  |
| Common Stock | 2025-12-12 |  | S |  | 3 | D | $14.785 | 41032<sup>(1)</sup> | D |  |
| Common Stock | 2025-12-12 |  | S |  | 32 | D | $14.7950 | 41000<sup>(1)</sup> | D |  |
| Common Stock |  |  |  |  |  |  |  | 4954 | I | By 401(k) |

---

## 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 Options | $9.3900 |  |  |  |  |  |  | 2025-05-21 | 2034-05-21 | Common Stock | 100000<sup>(2)</sup> |  | 100000<sup>(2)</sup> | D |  |

---

### Footnotes:

(1) Includes shares of restricted stock which vest at a rate of 20% per year commencing on May 21, 2025.

(2) Stock option vest at a rate of 20% per year commencing on May 21, 2025.

**Signature:** /s/ Jesse Tomczak  
**Date:** 2025-12-15

### 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.**