PKG · Packaging Corp Of America

The price listed is the weighted average sale price. The reporting person undertakes to provide full information regarding the number of shares sold at each separate price upon request.

Share award for equity portion of directors fees.

Share award for equity portion of directors fees.

Share award for equity portion of directors fees.

The beginning share balance increased from the previously reported amount due to reinvestment of dividends in transactions exempt from reporting pursuant to Rule 16a-11 under the Securities Exchange Act of 1934.

Share award for equity portion of directors fees.

Share award for equity portion of directors fees.

Share award for equity portion of directors fees.

Share award for equity portion of directors fees.

Share award for equity portion of directors fees.

Payout in shares of accumulated dividends on vesting performance units.

Pursuant to the terms of the Company's Long-Term Equity Incentive Plan, the Company withheld shares to cover the withholding tax obligation associated with equity awards vesting on the transaction date.

On March 27, 2026, the compensation subcommittee of the compensation committee of the registrant's board of directors certified attainment of the performance measure under the TSR performance units awarded to the reporting person on February 22, 2023. Performance was achieved at 200%. The units paid out on the date of certification.

Payout in shares of accumulated dividends on vesting performance units.

Payout in shares of accumulated dividends on vesting performance units.

Pursuant to the terms of the Company's Long-Term Equity Incentive Plan, the Company withheld shares to cover the withholding tax obligation associated with equity awards vesting on the transaction date.

Payout in shares of accumulated dividends on vesting performance units.

Payout in shares of accumulated dividends on vesting performance units.

Pursuant to the terms of the Company's Long-Term Equity Incentive Plan, the Company withheld shares to cover the withholding tax obligation associated with equity awards vesting on the transaction date.

Pursuant to the terms of the Company's Long-Term Equity Incentive Plan, the Company withheld shares to cover the withholding tax obligation associated with equity awards vesting on the transaction date.

On March 27, 2026, the compensation subcommittee of the compensation committee of the registrant's board of directors certified attainment of the performance measure under the TSR performance units awarded to the reporting person on February 22, 2023. Performance was achieved at 200%. The units paid out on the date of certification.

On March 27, 2026, the compensation subcommittee of the compensation committee of the registrant's board of directors certified attainment of the performance measure under the TSR performance units awarded to the reporting person on February 22, 2023. Performance was achieved at 200%. The units paid out on the date of certification.

On March 27, 2026, the compensation subcommittee of the compensation committee of the registrant's board of directors certified attainment of the performance measure under the TSR performance units awarded to the reporting person on February 22, 2023. Performance was achieved at 200%. The units paid out on the date of certification.

On March 27, 2026, the compensation subcommittee of the compensation committee of the registrant's board of directors certified attainment of the performance measure under the TSR performance units awarded to the reporting person on February 22, 2023. Performance was achieved at 200%. The units paid out on the date of certification.

Payout in shares of accumulated dividends on vesting performance units.

On March 27, 2026, the compensation subcommittee of the compensation committee of the registrant's board of directors certified attainment of the performance measure under the TSR performance units awarded to the reporting person on February 22, 2023. Performance was achieved at 200%. The units paid out on the date of certification.

Pursuant to the terms of the Company's Long-Term Equity Incentive Plan, the Company withheld shares to cover the withholding tax obligation associated with equity awards vesting on the transaction date.

Pursuant to the terms of the Company's Long-Term Equity Incentive Plan, the Company withheld shares to cover the withholding tax obligation associated with equity awards vesting on the transaction date.

On March 6, 2026, the compensation subcommittee of the compensation committee of the registrant's board of directors certified attainment of the performance measure under the performance units awarded to the reporting person on February 23, 2022. The units paid out on the date of certification.

On March 6, 2026, the compensation subcommittee of the compensation committee of the registrant's board of directors certified attainment of the performance measure under the ROIC performance units awarded to the reporting person on February 23, 2022. The units paid out on the date of certification.

On March 6, 2026, the compensation subcommittee of the compensation committee of the registrant's board of directors certified attainment of the performance measure under the ROIC performance units awarded to the reporting person on February 23, 2022. The units paid out on the date of certification.

Pursuant to the terms of the Company's Long-Term Equity Incentive Plan, the Company withheld shares to cover the withholding tax obligation associated with equity awards vesting on the transaction date.

Payout in shares of accumulated dividends on vesting performance units.

Payout in shares of accumulated dividends on vesting performance units.

Payout in shares of accumulated dividends on vesting performance units.

Pursuant to the terms of the Company's Long-Term Equity Incentive Plan, the Company withheld shares to cover the withholding tax obligation associated with equity awards vesting on the transaction date.

Pursuant to the terms of the Company's Long-Term Equity Incentive Plan, the Company withheld shares to cover the withholding tax obligation associated with equity awards vesting on the transaction date.

Pursuant to the terms of the Company's Long-Term Equity Incentive Plan, the Company withheld shares to cover the withholding tax obligation associated with equity awards vesting on the transaction date.

Payout in shares of accumulated dividends on vesting performance units.

Pursuant to the terms of the Company's Long-Term Equity Incentive Plan, the Company withheld shares to cover the withholding tax obligation associated with equity awards vesting on the transaction date.

On March 6, 2026, the compensation subcommittee of the compensation committee of the registrant's board of directors certified attainment of the performance measure under the ROIC performance units awarded to the reporting person on February 23, 2022. The units paid out on the date of certification.

Payout in shares of accumulated dividends on vesting performance units.

Payout in shares of accumulated dividends on vesting performance units.

Pursuant to the terms of the Company's Long-Term Equity Incentive Plan, the Company withheld shares to cover the withholding tax obligation associated with equity awards vesting on the transaction date.

On March 6, 2026, the compensation subcommittee of the compensation committee of the registrant's board of directors certified attainment of the performance measure under the ROIC performance units awarded to the reporting person on February 23, 2022. The units paid out on the date of certification.

On March 6, 2026, the compensation subcommittee of the compensation committee of the registrant's board of directors certified attainment of the performance measure under the ROIC performance units awarded to the reporting person on February 23, 2022. The units paid out on the date of certification.

Represents restricted stock units ("RSUs") issued to the reporting person. Each RSU represents a contingent right to receive one share of the registrant's common stock.

Represents restricted stock units ("RSUs") issued to the reporting person. Each RSU represents a contingent right to receive one share of the registrant's common stock.

Represents restricted stock units ("RSUs") issued to the reporting person. Each RSU represents a contingent right to receive one share of the registrant's common stock.