Exhibit 10.24

DONEGAL MUTUAL INSURANCE COMPANY

DONEGAL GROUP INC.

LONG-TERM EXECUTIVE INCENTIVE PLAN

Purpose

The Long-Term Executive Incentive Plan (this “Plan”) provides for the payment of performance-based bonuses to Plan participants based upon the Donegal Insurance Group’s achievement of profitable performance over a three-year period. The key performance measure for this Plan is the adjusted statutory combined ratio, as defined in this Plan.

The Compensation Committee of the Boards of Directors of Donegal Mutual Insurance Company and Donegal Group Inc. (the “Committee”) shall have the sole and absolute discretion to interpret and apply the terms of this Plan, including, but not limited to, the determination of the achievement of the performance objective of Appendix 1.

Scope

The calculation of the adjusted statutory combined ratio will be based on the combined statutory financial results for the 2020, 2021 and 2022 calendar years for the Donegal Insurance Group, which includes the following legal entities for the purposes of this Plan:

Donegal Mutual Insurance Company

Atlantic States Insurance Company

Michigan Insurance Company

Mountain States Commercial Insurance Company

Mountain States Indemnity Company

Peninsula Indemnity Company

Peninsula Insurance Company

Southern Insurance Company of Virginia

Southern Mutual Insurance Company

Performance Measures

Adjusted Statutory Combined Ratio—statutory combined ratio based on three-year financial results excluding any catastrophe adjustment(s), all executive incentive plan bonus payments and/or accruals and a stock option expense adjustment (see definitions below).

Bonus Formula

Each participant in this Plan shall be eligible to receive a bonus by multiplying the participant’s 2022 base salary, as defined in this Plan, by the bonus percentage shown in Appendix 1 that correlates to the average statutory combined ratio over the three-year period.

The calculation methodology is illustrated below:

Key Definitions

Base Salary—total wages as reported on a participant’s W-2 for 2022, excluding any taxable fringe benefits, short or long-term disability pay, gains from exercise of stock options and prior-year bonus.

Statutory Combined Ratio—sum of the net loss and loss expense ratio (net losses and loss expenses incurred divided by net premiums earned), the expense ratio (underwriting expenses less installment fee income divided by net premiums written) and the dividend ratio (policyholder dividends incurred divided by net premiums earned).

Catastrophe Adjustment—an adjustment will be provided to the statutory combined ratio for the purpose of this Plan to limit the net effect of up to two catastrophe events per year. For purposes of this provision, a catastrophe event is defined as an event for which the Property Claims Services unit of Insurance Services Office issues a catastrophe serial number and for which the net effect to the Donegal Insurance Group exceeds $5 million when aggregating losses incurred, loss expenses incurred and reinstatement premiums. The statutory combined ratio for the purposes of this Plan will be charged with:

In the event that more than two catastrophe events, as defined above, occur within a given calendar year, the statutory combined ratio for the purposes of this Plan will be charged with all of the net effect of the third and subsequent catastrophe events in that calendar year.

Stock Option Expense Adjustment—an adjustment will be provided to statutory combined ratio for the purpose of this Plan to remove the effect of stock option compensation expense included in the statutory financial statements.

Additional Provisions

Appendix 1

LONG-TERM EXECUTIVE INCENTIVE PLAN

Calendar Years 2020, 2021 and 2022

The participants eligible for the 2020-2022 Long-Term Executive Incentive Plan are as follows: