PEGA · Pegasystems Inc · Insider Trading

Sold pursuant to a pre-arranged trading plan adopted by the Dianne Ledingham Family Legacy Trust on June 15, 2026 under Rule 10b5-1 of the Securities Exchange Act of 1934, as amended.

Transfers of shares from the Alan N. Trefler Grantor Retained Annuity Trust I of 2024 and the Alan N. Trefler Grantor Retained Annuity Trust II of 2024 to the Alan N. Trefler Irrevocable Non-GST Trust of 2022.

Reflects exempt transfers between the reporting person and the trust described in the Nature of Indirect Beneficial Ownership column.

Transfers of shares from the Alan N. Trefler Grantor Retained Annuity Trust I of 2024 and the Alan N. Trefler Grantor Retained Annuity Trust II of 2024 to the Alan N. Trefler Irrevocable Non-GST Trust of 2022.

Reflects exempt transfers between the reporting person and the trust described in the Nature of Indirect Beneficial Ownership column.

Transfers of shares from the Alan N. Trefler Grantor Retained Annuity Trust I of 2024 and the Alan N. Trefler Grantor Retained Annuity Trust II of 2024 to the Alan N. Trefler Irrevocable Non-GST Trust of 2022.

Represents the weighted average of sale prices, ranging from $35.7400 to $35.8350. The individual has provided the Company, and undertakes to provide to the staff of the Security and Exchange Commission or any security holder of the Company, upon request, full information regarding the number of shares sold at each separate price.

Each restricted stock unit represents the right to receive, following vesting, one share of common stock.

25% of the restricted stock units vested on the Date Exercisable in Table II, and the remaining 75% vest in equal quarterly installments over the following three years.

Each restricted stock unit represents the right to receive, following vesting, one share of common stock.

25% of the restricted stock units vested on the Date Exercisable in Table II, and the remaining 75% vest in equal quarterly installments over the following three years.

Each restricted stock unit represents the right to receive, following vesting, one share of common stock.

25% of the restricted stock units vested on the Date Exercisable in Table II, and the remaining 75% vest in equal quarterly installments over the following three years.

Each restricted stock unit represents the right to receive, following vesting, one share of common stock.

25% of the restricted stock units vested on the Date Exercisable in Table II, and the remaining 75% vest in equal quarterly installments over the following three years.

Each restricted stock unit represents the right to receive, following vesting, one share of common stock.

25% of the restricted stock units vested on the Date Exercisable in Table II, and the remaining 75% vest in equal quarterly installments over the following three years.

Each restricted stock unit represents the right to receive, following vesting, one share of common stock.

25% of the restricted stock units vested on the Date Exercisable in Table II, and the remaining 75% vest in equal quarterly installments over the following three years.

Each restricted stock unit represents the right to receive, following vesting, one share of common stock.

25% of the restricted stock units vested on the Date Exercisable in Table II, and the remaining 75% vest in equal quarterly installments over the following three years.

Each restricted stock unit represents the right to receive, following vesting, one share of common stock.

25% of the restricted stock units vested on the Date Exercisable in Table II, and the remaining 75% vest in equal quarterly installments over the following three years.

Each restricted stock unit represents the right to receive, following vesting, one share of common stock.

25% of the restricted stock units vested on the Date Exercisable in Table II, and the remaining 75% vest in equal quarterly installments over the following three years.

Each restricted stock unit represents the right to receive, following vesting, one share of common stock.

25% of the restricted stock units vested on the Date Exercisable in Table II, and the remaining 75% vest in equal quarterly installments over the following three years.

Each restricted stock unit represents the right to receive, following vesting, one share of common stock.

25% of the restricted stock units vested on the Date Exercisable in Table II, and the remaining 75% vest in equal quarterly installments over the following three years.

Each restricted stock unit represents the right to receive, following vesting, one share of common stock.

25% of the restricted stock units vested on the Date Exercisable in Table II, and the remaining 75% vest in equal quarterly installments over the following three years.

Each restricted stock unit represents the right to receive, following vesting, one share of common stock.

25% of the restricted stock units vested on the Date Exercisable in Table II, and the remaining 75% vest in equal quarterly installments over the following three years.

Each restricted stock unit represents the right to receive, following vesting, one share of common stock.

25% of the restricted stock units vested on the Date Exercisable in Table II, and the remaining 75% vest in equal quarterly installments over the following three years.

Each restricted stock unit represents the right to receive, following vesting, one share of common stock.

25% of the restricted stock units vested on the Date Exercisable in Table II, and the remaining 75% vest in equal quarterly installments over the following three years.