Vesting

Participants are 100% vested immediately in the value of their contributions, Company matching contributions, earnings thereon and rollovers from other qualified plans.

The Company retirement savings contribution, including earnings thereon, becomes 100% vested upon completion of three years of service, or upon reaching 65 years of age, permanent disability, or death while employed by the Company. Forfeited non-vested accounts are applied to reduce future Company contributions.

Investment Options

Participants may elect to invest their account balances in any of the available investment options provided by the Plan through the PCA Defined Contribution Master Trust (the “Master Trust”). Participants may change their investment options on any business day, subject to certain short-term trading restrictions outlined in the Plan document.

The portion of the Plan’s interest in the Master Trust currently invested in the PCA Common Stock Fund, and any future employee or employer contributions used to acquire PCA common stock, is invested in the Employee Stock Ownership Plan (“ESOP”) component of the Plan. Plan participants have the ability to instruct the Plan’s trustee to distribute directly to them future cash dividends paid on shares of PCA common stock credited to their PCA common stock ESOP. The election to receive cash dividends is made through the PCA Benefits Center, and dividends will be reported as taxable income.

Benefit Payments

In the event of retirement (as defined in the Plan), death, permanent disability, or termination of employment, the vested balance in the participant’s account will generally be distributed to the participant or the participant’s beneficiary in a single lump-sum cash payment. The portion of the participant’s account invested in the PCA Common Stock Fund will be distributed in cash unless an election is made to be distributed in kind. In-service withdrawals of rollover contributions and related earnings and certain predecessor plan account balances, as defined, are available for any reason. Participants aged 55 or older may withdraw the entire value, or any portion thereof, of their Company matching contributions and the vested value of their Company retirement savings contribution at any time. Participants who have attained the age of 59 1/2 may withdraw the entire value, or any portion thereof, of their account balance at any time. A participant’s entire account balance shall be distributed no later than April 1 following the later of the calendar year in which the participant attains age 72 or the calendar year in which the participant’s termination of employment occurs.

Administrative Expenses

Participant accounts were charged $15.00 per quarter for administrative expenses during 2025. Effective January 1, 2026, the quarterly fee for the Plan changed to $12.50 per quarter. If administrative expenses exceed the amount paid by participants, the Company will pay the difference. Administrative expenses primarily include recordkeeper fees, investment management expenses, and professional service fees.

Notes Receivable from Participants

A participant may borrow an amount up to the lesser of $50,000 or 50% of his or her vested account balance. The minimum loan amount is $1,000. Such loans bear interest at the prime rate as published by The Wall Street Journal and are secured by the participant’s account balance in the Plan. Loans must be repaid within 60 months, with principal and interest payments made primarily through payroll deductions. There may be primary residence loans that exceed the 60-month repayment period but only if they were transferred in from another plan. There may also be loans with repayment schedules affected by COVID-related relief that exceed the 60-month repayment period. Employees on an unpaid leave may continue to repay loans via check, money order, or online debit during their period of absence. Participants also have the ability to elect to make a one-time repayment of their outstanding loan balance, of which the payment can be made via check, money order, or online debit. Participants may take up to two general purpose loans at a time. A loan is considered in default and becomes a taxable event when a loan is not current at the end of the cure period, the quarter following the quarter in which the payment was missed.

Interest rates on loans outstanding in the Plan at both December 31, 2025 and 2024 ranged from 3.25% to 9.75%.

Forfeited Accounts

At December 31, 2025 and 2024, forfeited non-vested accounts totaled approximately $331,000 and $412,000, respectively. These accounts will be used to reduce future employer contributions. In 2025, employer contributions were reduced by approximately $384,000 for forfeited non-vested accounts.

Plan Termination

Although it has not expressed any intent to do so, the Company has the right under the Plan to discontinue its contributions at any time and to terminate the Plan subject to the provisions of ERISA. In the event of Plan termination, participants will become 100% vested in the Company’s retirement savings contributions, and earnings thereon.

Purchases and sales of securities in the Master Trust are recorded on the settlement date. Interest income within the Master Trust is recorded on the accrual basis. Dividends within the Master Trust are recorded on the ex-dividend date. Net appreciation/depreciation in the Master Trust includes the gains and losses on investments bought and sold as well as held during the year.

The preparation of financial statements in conformity with accounting principles generally accepted in the United States of America requires the Plan Administrator to make estimates and assumptions that affect the amounts reported in the financial statements and accompanying notes. Actual results could differ from those estimates.

Participant contributions are allocated to participant accounts when the Company remits payroll deductions from eligible Plan participants. Participant and employer contributions are recorded in the year in which participant compensation is earned.

Benefit payments are recorded when paid.

Notes receivable from participants represent participant loans that are recorded at their unpaid principal balance plus any accrued but unpaid interest. Interest income on notes receivable from participants is recorded when it is earned. Related fees are recorded as administrative expenses and are expensed when they are incurred. If a participant ceases to make loan repayments and the provisions of the Plan document deem the participant loan to be a distribution, the participant loan balance is reduced and a benefit payment is recorded.

participating plans. Each participating plan’s interest in the Master Trust is based on the aggregate account balances of the participants in the respective participating plan. The Master Trust specifically identifies contributions, benefit payments, and plan-specific expenses attributable to each participating plan. Investment gains (losses) are allocated to each participating plan in the Master Trust on a daily basis based on each plan’s divided interest in the Master Trust. At December 31, 2025 and 2024, the Plan’s interest in the net assets of the Master Trust was $1,678,681,108 and $1,533,228,179, respectively.

Fair Value Measurement

Fair value is defined as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date (i.e., an exit price). The fair value hierarchy prioritizes the inputs to valuation techniques used to measure fair value. The hierarchy gives the highest priority to unadjusted quoted prices in active markets for identical assets and liabilities (Level 1) and the lowest priority to unobservable inputs (Level 3). The three levels of the fair value hierarchy are described below:

Level 1 — Unadjusted quoted prices in active markets that are accessible to the reporting entity at the measurement date for identical assets and liabilities.

Level 2 — Inputs other than quoted prices in active markets for identical assets and liabilities that are observable either directly or indirectly for substantially the full term of the asset or liability. Level 2 inputs include the following:

Level 3 — Unobservable inputs for the asset or liability (i.e., supported by little or no market activity). Level 3 inputs include management’s own assumption about the assumptions that market participants would use in pricing the asset or liability (including assumptions about risk).

Assets that are measured at fair value using the net asset value (“NAV”) per share as a practical expedient are not categorized within the fair value hierarchy.

The level in the fair value hierarchy within which the fair value measurement is classified is determined based on the lowest level of input that is significant to the fair value measurement in its entirety.

The following is a description of the valuation techniques and inputs used for each major class of asset measured to estimate fair value by the Master Trust.

Self-directed brokerage account: Valued at the closing price reported on the active market on which the individual securities are traded.

Company common stock: Valued using the share value calculated from the observable market price of the PCA common stock.

Collective trust funds, target date collective funds, and short-term investment funds: Valued using the NAV per share practical expedient since these assets do not have readily determinable fair values and are subsequently excluded from the fair value hierarchy. In general, there are no restrictions on the redemption of these funds, which is permitted daily upon proper notice, and there are no unfunded commitments associated with these funds.

Synthetic Guaranteed Investment Contracts

During the years ended December 31, 2025 and 2024, the Plan, through the PCA Stable Value Fund within the Master Trust, held investments in a portfolio of synthetic guaranteed investment contracts. The contracts in the PCA Stable Value Fund are fully benefit-responsive and therefore they are reported at contract value. Contract value is the relevant measure for fully benefit-responsive investment contracts because this is the amount that participants would receive if they were to initiate permitted transactions under the terms of the Master Trust and Plan. The contract value is calculated from the contributions made under the contracts plus interest credited less participant withdrawals and fees.

The PCA Stable Value Fund primarily invests in synthetic security-backed investment contracts and cash funds. Synthetic security-backed investment contracts are issued by insurance companies and other financial institutions (the “wrap contracts”) that are backed by a portfolio of bonds, fixed income common/collective trust funds, or other fixed income securities (the “underlying assets”) that are owned by the Master Trust and Plan.

The wrap contract issuers provide a rate of return that has a zero percent floor guarantee and provide full benefit responsiveness, provided that all terms of the wrap contracts have been met. Under the contracts, realized and unrealized gains and losses on the underlying assets are not immediately recognized in the net assets of the Master Trust and Plan, but are amortized over the maturity or duration of the underlying assets, through adjustments to the future interest crediting rate of the wrap contracts.

As of December 31, 2025 and 2024, there were no reserves against the wrap contract’s carrying values due to credit risks of the issuers. Certain events limit the ability of the Master Trust and Plan to transact at contract value with the wrap contract issuers. Such events may include, but are not limited to, Plan sponsor events that cause significant withdrawals from the PCA Stable Value Fund. However, the Master Trust and Plan’s management is not aware of the occurrence, or likely occurrence of any such events, which would limit the Master Trust and Plan’s ability to transact at contract value with the wrap contract issuers. The wrap contracts cannot be terminated by the issuer at a value other than contract value except under a limited number of very specific circumstances such as termination of the Master Trust or Plan or loss of qualified status of the Master Trust or Plan, material misrepresentations by the Master Trust or Plan sponsor or investment manager, the failure of the Plan’s trust to qualify for exemption from federal income taxes or any required prohibited transaction exemption under ERISA, failure by these same parties to meet material obligations under the contracts, or other similar types of events. However, the Master Trust and Plan’s management is unaware of any such events occurring that would allow the wrap contract issuers to terminate the contracts held by the Master Trust and Plan.

Accounting principles generally accepted in the United States require plan management to evaluate uncertain tax positions taken by the Plan. The financial statement effects of a tax position are recognized when the position is more likely than not, based on the technical merits, to be sustained upon examination by the IRS. The Plan Administrator has analyzed the tax positions taken by the Plan and has concluded that as of December 31, 2025 and 2024, there are no uncertain positions taken or expected to be taken. The Plan has recognized no interest or penalties related to uncertain tax positions. The Plan is subject to routine audits by taxing jurisdictions; however, there are currently no audits for any tax periods in progress.