# EDGAR Filing Document

**Accession Number:** 0001028918
**File Stem:** 0001028918-25-000129
**Filing Date:** 2025-9
**Character Count:** 8638
**Document Hash:** d5b1c2656e4f239553978a8820df20ac
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001028918-25-000129.hdr.sgml**: 20250903

**ACCESSION NUMBER**: 0001028918-25-000129

**CONFORMED SUBMISSION TYPE**: 4

**PUBLIC DOCUMENT COUNT**: 1

**CONFORMED PERIOD OF REPORT**: 20250831

**FILED AS OF DATE**: 20250903

**DATE AS OF CHANGE**: 20250903

**REPORTING-OWNER**: 

**OWNER DATA:**
- **COMPANY CONFORMED NAME:** RICE TOM
- **CENTRAL INDEX KEY:** 0001576227

**ORGANIZATION NAME:**

**FILING VALUES:**
- **FORM TYPE:** 4
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 000-22193
- **FILM NUMBER:** 251290223

**MAIL ADDRESS:**
- **STREET 1:** 17901 VON KARMAN AVENUE
- **STREET 2:** SUITE 1200
- **CITY:** IRVINE
- **STATE:** CA
- **ZIP:** 92614
**ISSUER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** PACIFIC PREMIER BANCORP INC
- **CENTRAL INDEX KEY:** 0001028918
- **STANDARD INDUSTRIAL CLASSIFICATION:** STATE COMMERCIAL BANKS [6022]
- **ORGANIZATION NAME:** 02 Finance
- **EIN:** 330743196
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**BUSINESS ADDRESS:**
- **STREET 1:** 17901 VON KARMAN AVE
- **STREET 2:** SUITE 1200
- **CITY:** IRVINE
- **STATE:** CA
- **ZIP:** 92614
- **BUSINESS PHONE:** 949-864-8000

**MAIL ADDRESS:**
- **STREET 1:** 17901 VON KARMAN AVE
- **STREET 2:** SUITE 1200
- **CITY:** IRVINE
- **STATE:** CA
- **ZIP:** 92614

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

## FORM 4

### STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

[x] 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>RICE TOM<br><sub>(Last) (First) (Middle)</sub><br>17901 VON KARMAN AVE., SUITE 1200<br><sub>(Street)</sub><br>IRVINE, CA 92614<br><sub>(City) (State) (Zip)</sub> | **3. Date of Earliest Transaction (Month/Day/Year)**<br>2025-08-31 | **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>_SEVP/ Chief Innovation Officer_ |
| **2. Issuer Name and Ticker or Trading Symbol**<br>PACIFIC PREMIER BANCORP INC [ PPBI ] | **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 |
| PPBI Common Stock | 2025-08-31 |  | D |  | 30657 | D | <sup>(1)(2)</sup> | 0 | D |  |
| PPBI Common Stock | 2025-08-31 |  | D |  | 82487 | D | <sup>(1)</sup> | 0 | I | By The Rice Family Trust |

---

## 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 |
| PPBI Restricted Stock Unit | <sup>(3)</sup> | 2025-08-31 |  | D<sup>(3)(4)</sup> |  |  | 16092 | <sup>(3)</sup> | <sup>(5)</sup> | PPBI Common Stock | 16092 | $0 | 0 | D |  |
| PPBI Restricted Stock Unit | <sup>(3)</sup> | 2025-08-31 |  | D<sup>(3)(6)</sup> |  |  | 16136 | <sup>(3)</sup> | <sup>(5)</sup> | PPBI Common Stock | 16136 | $0 | 0 | D |  |
| PPBI Restricted Stock Unit | <sup>(3)</sup> | 2025-08-31 |  | D<sup>(3)(7)</sup> |  |  | 16802 | <sup>(3)</sup> | <sup>(5)</sup> | PPBI Common Stock | 16802 | $0 | 0 | D |  |

---

### Footnotes:

(1) Disposed of in connection with the Agreement and Plan of Merger (the "Merger Agreement"), dated April 23, 2025, by and among Columbia Banking System, Inc. ("Columbia"), Pacific Premier Bancorp, Inc. (the "Issuer") and Balboa Merger Sub, Inc., pursuant to which the Issuer was merged with and into Columbia on August 31, 2025 (the "Effective Time"). Pursuant to the Merger Agreement, as of the Effective Time, each share of the Issuer's common stock outstanding immediately prior to the Effective Time was converted into the right to receive 0.9150 of a share of Columbia common stock, with cash (without interest) paid in lieu of fractional shares, if applicable (the "Exchange Ratio").

(2) Includes 30,657 shares of restricted stock ("Issuer RSA"). Pursuant to the Merger Agreement, at the Effective Time, each Issuer RSA was assumed and converted into a restricted stock award in respect of shares of Columbia common stock based on the Exchange Ratio and subject to the same terms and conditions as were applicable to the Issuer RSA immediately prior to the Effective Time.

(3) Each Restricted Stock Unit ("Issuer RSU") represents the right to receive one share of common stock.  Pursuant to the Merger Agreement, at the Effective Time, each Issuer RSU was assumed and converted into a restricted stock unit award in respect of Columbia common stock ("Columbia RSU"), with the number of shares of Columbia common stock subject to each such Columbia RSU award equal to the product of (i) the number of shares of Issuer common stock subject to such Issuer RSU award immediately prior to the Effective Time based on target performance multiplied by (ii) the Exchange Ratio. Except as specifically provided in the Merger Agreement, each such Columbia RSU award will continue to be subject to the same terms and conditions as were applicable to the applicable Issuer RSU immediately prior to the Effective Time.

(4) Includes approximately 2,041 dividend equivalent rights accrued between May 2023 to August 2025. Each dividend equivalent right is the economic equivalent of one share of common stock.

(5) Not applicable.

(6) Includes approximately 483 dividend equivalent rights accrued between May 2025 to August 2025. Each dividend equivalent right is the economic equivalent of one share of common stock.

(7) Includes approximately 1,322 dividend equivalent rights accrued between May 2024 to August 2025. Each dividend equivalent right is the economic equivalent of one share of common stock.

**Signature:** /s/ Tom Rice  
**Date:** 2025-09-03

### 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.**