ACNB

SEC source: 0001628280-26-062414 · wk-form4_1789653214.xml · nonDerivative · entry 1

Newell Donna M · CIK 0001549564 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 12,909.3393

F1 · deemedExecutionDate: The date of execution was determined in accordance with SEC Rule 16a-3(g)(2) and (g)(4).

F2 · shares: The shares represent stock received as compensation for service as a director pursuant to a director compensation plan.

F3 · balance_after: This amount includes shares of common stock purchased for the same transaction date through the automatic reinvestment of dividends under the ACNB Corporation Dividend Reinvestment and Stock Purchase Plan, which are exempt from the reporting requirements of Section 16 of the Securities Exchange Act of 1934.

SEC source: 0001628280-26-062412 · wk-form4_1789653203.xml · nonDerivative · entry 1

Chiaruttini Alexandra C · CIK 0001828738 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,452.0905

F1 · deemedExecutionDate: The date of execution was determined in accordance with SEC Rule 16a-3(g)(2) and (g)(4).

F2 · shares: The shares represent stock received as compensation for service as a director pursuant to a director compensation plan.

F3 · balance_after: This amount includes shares of common stock purchased for the same transaction date through the automatic reinvestment of dividends under the ACNB Corporation Dividend Reinvestment and Stock Purchase Plan, which are exempt from the reporting requirements of Section 16 of the Securities Exchange Act of 1934.

SEC source: 0001628280-26-062413 · wk-form4_1789653209.xml · nonDerivative · entry 1

Carson Elizabeth F. · CIK 0002055139 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 13,309.3369

F1 · deemedExecutionDate: The date of execution was determined in accordance with SEC Rule 16a-3(g)(2) and (g)(4).

F2 · shares: The shares represent stock received as compensation for service as a director pursuant to a director compensation plan.

F3 · balance_after: This amount includes shares of common stock purchased for the same transaction date through the automatic reinvestment of dividends under the ACNB Corporation Dividend Reinvestment and Stock Purchase Plan, which are exempt from the reporting requirements of Section 16 of the Securities Exchange Act of 1934.

SEC source: 0001628280-26-062409 · wk-form4_1789653185.xml · nonDerivative · entry 1

Lott James J · CIK 0001399227 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 19,395.9598

F1 · deemedExecutionDate: The date of execution was determined in accordance with SEC Rule 16a-3(g)(2) and (g)(4).

F2 · shares: The shares represent stock received as compensation for service as a director pursuant to a director compensation plan.

F3 · balance_after: This amount includes shares of common stock purchased for the same transaction date through the automatic reinvestment of dividends under the ACNB Corporation Dividend Reinvestment and Stock Purchase Plan, which are exempt from the reporting requirements of Section 16 of the Securities Exchange Act of 1934.

SEC source: 0001628280-26-062410 · wk-form4_1789653191.xml · nonDerivative · entry 2

ELSNER FRANK III · CIK 0001271480 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 29,071.0964

F1 · deemedExecutionDate: The date of execution was determined in accordance with SEC Rule 16a-3(g)(2) and (g)(4).

F3 · balance_after: This amount includes shares of common stock purchased for the same transaction date through the automatic reinvestment of dividends under the ACNB Corporation Dividend Reinvestment and Stock Purchase Plan, which are exempt from the reporting requirements of Section 16 of the Securities Exchange Act of 1934.

SEC source: 0001628280-26-062410 · wk-form4_1789653191.xml · nonDerivative · entry 1

ELSNER FRANK III · CIK 0001271480 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 29,052.1094

F1 · deemedExecutionDate: The date of execution was determined in accordance with SEC Rule 16a-3(g)(2) and (g)(4).

F2 · shares: The shares represent stock received as compensation for service as a director pursuant to a director compensation plan.

F3 · balance_after: This amount includes shares of common stock purchased for the same transaction date through the automatic reinvestment of dividends under the ACNB Corporation Dividend Reinvestment and Stock Purchase Plan, which are exempt from the reporting requirements of Section 16 of the Securities Exchange Act of 1934.

SEC source: 0001628280-26-062411 · wk-form4_1789653198.xml · nonDerivative · entry 1

Stock Alan J · CIK 0001343134 · Director · Chairman of the Board

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 88,638.5371

F1 · deemedExecutionDate: The date of execution was determined in accordance with SEC Rule 16a-3(g)(2) and (g)(4).

F2 · shares: The shares represent stock received as compensation for service as a director pursuant to a director compensation plan.

F3 · balance_after: This amount includes shares of common stock purchased for the same transaction date through the automatic reinvestment of dividends under the ACNB Corporation Dividend Reinvestment and Stock Purchase Plan, which are exempt from the reporting requirements of Section 16 of the Securities Exchange Act of 1934.

SEC source: 0001628280-26-062408 · wk-form4_1789653180.xml · nonDerivative · entry 1

Herring Todd L · CIK 0001710848 · Director · Vice Chairman of the Board

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 11,326.637

F1 · deemedExecutionDate: The date of execution was determined in accordance with SEC Rule 16a-3(g)(2) and (g)(4).

F2 · shares: The shares represent stock received as compensation for service as a director pursuant to a director compensation plan.

F3 · balance_after: This amount includes shares of common stock purchased for the same transaction date through the automatic reinvestment of dividends under the ACNB Corporation Dividend Reinvestment and Stock Purchase Plan, which are exempt from the reporting requirements of Section 16 of the Securities Exchange Act of 1934.

SEC source: 0001628280-26-062407 · wk-form4_1789653173.xml · nonDerivative · entry 1

Seibel Donald Arthur Jr · CIK 0001710898 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 5,524.5921

F1 · deemedExecutionDate: The date of execution was determined in accordance with SEC Rule 16a-3(g)(2) and (g)(4).

F2 · shares: The shares represent stock received as compensation for service as a director pursuant to a director compensation plan.

F3 · balance_after: This amount includes shares of common stock purchased for the same transaction date through the automatic reinvestment of dividends under the ACNB Corporation Dividend Reinvestment and Stock Purchase Plan, which are exempt from the reporting requirements of Section 16 of the Securities Exchange Act of 1934.

SEC source: 0001628280-26-062406 · wk-form4_1789653167.xml · nonDerivative · entry 1

Chaney Kimberly S · CIK 0001800429 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 4,236.3758

F1 · deemedExecutionDate: The date of execution was determined in accordance with SEC Rule 16a-3(g)(2) and (g)(4).

F2 · shares: The shares represent stock received as compensation for service as a director pursuant to a director compensation plan.

F3 · balance_after: This amount includes shares of common stock purchased for the same transaction date through the automatic reinvestment of dividends under the ACNB Corporation Dividend Reinvestment and Stock Purchase Plan, which are exempt from the reporting requirements of Section 16 of the Securities Exchange Act of 1934.

SEC source: 0001628280-26-062404 · wk-form4_1789653157.xml · nonDerivative · entry 1

Draganosky Eugene J. · CIK 0002055135 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 13,674.2469

F1 · deemedExecutionDate: The date of execution was determined in accordance with SEC Rule 16a-3(g)(2) and (g)(4).

F2 · shares: The shares represent stock received as compensation for service as a director pursuant to a director compensation plan.

F3 · balance_after: This amount includes shares of common stock purchased for the same transaction date through the automatic reinvestment of dividends under the ACNB Corporation Dividend Reinvestment and Stock Purchase Plan, which are exempt from the reporting requirements of Section 16 of the Securities Exchange Act of 1934.

SEC source: 0001628280-26-062405 · wk-form4_1789653161.xml · nonDerivative · entry 1

Polli John M. · CIK 0002055170 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 36,343.951

F1 · deemedExecutionDate: The date of execution was determined in accordance with SEC Rule 16a-3(g)(2) and (g)(4).

F2 · shares: The shares represent stock received as compensation for service as a director pursuant to a director compensation plan.

F3 · balance_after: This amount includes shares of common stock purchased for the same transaction date through the automatic reinvestment of dividends under the ACNB Corporation Dividend Reinvestment and Stock Purchase Plan, which are exempt from the reporting requirements of Section 16 of the Securities Exchange Act of 1934.

SEC source: 0001628280-26-054805 · wk-form4_1786132034.xml · nonDerivative · entry 1

Seibel Donald Arthur Jr · CIK 0001710898 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 5,312.4081

SEC source: 0001628280-26-043853 · wk-form4_1781725312.xml · nonDerivative · entry 1

Carson Elizabeth F. · CIK 0002055139 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 13,144.6602

F1 · deemedExecutionDate: The date of execution was determined in accordance with SEC Rule 16a-3(g)(2) and (g)(4).

F2 · shares: The shares represent stock received as compensation for service as a director pursuant to a director compensation plan.

F3 · balance_after: This amount includes shares of common stock purchased for the same transaction date through the automatic reinvestment of dividends under the ACNB Corporation Dividend Reinvestment and Stock Purchase Plan, which are exempt from the reporting requirements of Section 16 of the Securities Exchange Act of 1934.

SEC source: 0001628280-26-043852 · wk-form4_1781725304.xml · nonDerivative · entry 1

Seibel Donald Arthur Jr · CIK 0001710898 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 6,812.4081

F1 · deemedExecutionDate: The date of execution was determined in accordance with SEC Rule 16a-3(g)(2) and (g)(4).

F2 · shares: The shares represent stock received as compensation for service as a director pursuant to a director compensation plan.

F3 · balance_after: This amount includes shares of common stock purchased for the same transaction date through the automatic reinvestment of dividends under the ACNB Corporation Dividend Reinvestment and Stock Purchase Plan, which are exempt from the reporting requirements of Section 16 of the Securities Exchange Act of 1934.

SEC source: 0001628280-26-043850 · wk-form4_1781725291.xml · nonDerivative · entry 1

Newell Donna M · CIK 0001549564 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 12,641.6094

F1 · deemedExecutionDate: The date of execution was determined in accordance with SEC Rule 16a-3(g)(2) and (g)(4).

F2 · shares: The shares represent stock received as compensation for service as a director pursuant to a director compensation plan.

F3 · balance_after: This amount includes shares of common stock purchased for the same transaction date through the automatic reinvestment of dividends under the ACNB Corporation Dividend Reinvestment and Stock Purchase Plan, which are exempt from the reporting requirements of Section 16 of the Securities Exchange Act of 1934.

SEC source: 0001628280-26-043851 · wk-form4_1781725297.xml · nonDerivative · entry 2

ELSNER FRANK III · CIK 0001271480 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 28,840.1243

F1 · deemedExecutionDate: The date of execution was determined in accordance with SEC Rule 16a-3(g)(2) and (g)(4).

F3 · balance_after: This amount includes shares of common stock purchased for the same transaction date through the automatic reinvestment of dividends under the ACNB Corporation Dividend Reinvestment and Stock Purchase Plan, which are exempt from the reporting requirements of Section 16 of the Securities Exchange Act of 1934.

SEC source: 0001628280-26-043851 · wk-form4_1781725297.xml · nonDerivative · entry 1

ELSNER FRANK III · CIK 0001271480 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 28,798.0238

F1 · deemedExecutionDate: The date of execution was determined in accordance with SEC Rule 16a-3(g)(2) and (g)(4).

F2 · shares: The shares represent stock received as compensation for service as a director pursuant to a director compensation plan.

F3 · balance_after: This amount includes shares of common stock purchased for the same transaction date through the automatic reinvestment of dividends under the ACNB Corporation Dividend Reinvestment and Stock Purchase Plan, which are exempt from the reporting requirements of Section 16 of the Securities Exchange Act of 1934.

SEC source: 0001628280-26-043849 · wk-form4_1781725286.xml · nonDerivative · entry 1

Herring Todd L · CIK 0001710848 · Director · Vice Chairman of the Board

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 11,053.188

F1 · deemedExecutionDate: The date of execution was determined in accordance with SEC Rule 16a-3(g)(2) and (g)(4).

F2 · shares: The shares represent stock received as compensation for service as a director pursuant to a director compensation plan.

F3 · balance_after: This amount includes shares of common stock purchased for the same transaction date through the automatic reinvestment of dividends under the ACNB Corporation Dividend Reinvestment and Stock Purchase Plan, which are exempt from the reporting requirements of Section 16 of the Securities Exchange Act of 1934.

SEC source: 0001628280-26-043847 · wk-form4_1781725280.xml · nonDerivative · entry 1

Lott James J · CIK 0001399227 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 19,179.6398

F1 · deemedExecutionDate: The date of execution was determined in accordance with SEC Rule 16a-3(g)(2) and (g)(4).

F2 · shares: The shares represent stock received as compensation for service as a director pursuant to a director compensation plan.

F3 · balance_after: This amount includes shares of common stock purchased for the same transaction date through the automatic reinvestment of dividends under the ACNB Corporation Dividend Reinvestment and Stock Purchase Plan, which are exempt from the reporting requirements of Section 16 of the Securities Exchange Act of 1934.

SEC source: 0001628280-26-043846 · wk-form4_1781725272.xml · nonDerivative · entry 1

Polli John M. · CIK 0002055170 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 36,123.7134

F1 · deemedExecutionDate: The date of execution was determined in accordance with SEC Rule 16a-3(g)(2) and (g)(4).

F2 · shares: The shares represent stock received as compensation for service as a director pursuant to a director compensation plan.

F3 · balance_after: This amount includes shares of common stock purchased for the same transaction date through the automatic reinvestment of dividends under the ACNB Corporation Dividend Reinvestment and Stock Purchase Plan, which are exempt from the reporting requirements of Section 16 of the Securities Exchange Act of 1934.

SEC source: 0001628280-26-043845 · wk-form4_1781725264.xml · nonDerivative · entry 1

Chiaruttini Alexandra C · CIK 0001828738 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,230.3605

F1 · deemedExecutionDate: The date of execution was determined in accordance with SEC Rule 16a-3(g)(2) and (g)(4).

F2 · shares: The shares represent stock received as compensation for service as a director pursuant to a director compensation plan.

F3 · balance_after: This amount includes shares of common stock purchased for the same transaction date through the automatic reinvestment of dividends under the ACNB Corporation Dividend Reinvestment and Stock Purchase Plan, which are exempt from the reporting requirements of Section 16 of the Securities Exchange Act of 1934.

SEC source: 0001628280-26-043844 · wk-form4_1781725258.xml · nonDerivative · entry 1

Chaney Kimberly S · CIK 0001800429 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 4,052.5487

F1 · deemedExecutionDate: The date of execution was determined in accordance with SEC Rule 16a-3(g)(2) and (g)(4).

F2 · shares: The shares represent stock received as compensation for service as a director pursuant to a director compensation plan.

F3 · balance_after: This amount includes shares of common stock purchased for the same transaction date through the automatic reinvestment of dividends under the ACNB Corporation Dividend Reinvestment and Stock Purchase Plan, which are exempt from the reporting requirements of Section 16 of the Securities Exchange Act of 1934.

SEC source: 0001628280-26-043842 · wk-form4_1781725250.xml · nonDerivative · entry 1

Draganosky Eugene J. · CIK 0002055135 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 13,509.5702

F1 · deemedExecutionDate: The date of execution was determined in accordance with SEC Rule 16a-3(g)(2) and (g)(4).

F2 · shares: The shares represent stock received as compensation for service as a director pursuant to a director compensation plan.

F3 · balance_after: This amount includes shares of common stock purchased for the same transaction date through the automatic reinvestment of dividends under the ACNB Corporation Dividend Reinvestment and Stock Purchase Plan, which are exempt from the reporting requirements of Section 16 of the Securities Exchange Act of 1934.

SEC source: 0001628280-26-043841 · wk-form4_1781725242.xml · nonDerivative · entry 1

Stock Alan J · CIK 0001343134 · Director · Chairman of the Board

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 88,350.2408

F1 · deemedExecutionDate: The date of execution was determined in accordance with SEC Rule 16a-3(g)(2) and (g)(4).

F2 · shares: The shares represent stock received as compensation for service as a director pursuant to a director compensation plan.

F3 · balance_after: This amount includes shares of common stock purchased for the same transaction date through the automatic reinvestment of dividends under the ACNB Corporation Dividend Reinvestment and Stock Purchase Plan, which are exempt from the reporting requirements of Section 16 of the Securities Exchange Act of 1934.

SEC source: 0001628280-26-018506 · wk-form4_1773762033.xml · nonDerivative · entry 1

Seibel Donald Arthur Jr · CIK 0001710898 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 6,464.912

F1 · deemedExecutionDate: The date of execution was determined in accordance with SEC Rule 16a-3(g)(2) and (g)(4).

F2 · shares: The shares represent stock received as compensation for service as a director pursuant to a director compensation plan.

F3 · balance_after: This amount includes shares of common stock purchased for the same transaction date through the automatic reinvestment of dividends under the ACNB Corporation Dividend Reinvestment and Stock Purchase Plan, which are exempt from the reporting requirements of Section 16 of the Securities Exchange Act of 1934.

SEC source: 0001628280-26-018505 · wk-form4_1773762024.xml · nonDerivative · entry 1

Kelley Scott L · CIK 0001549663 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 27,999.6123

F1 · deemedExecutionDate: The date of execution was determined in accordance with SEC Rule 16a-3(g)(2) and (g)(4).

F2 · shares: The shares represent stock received as compensation for service as a director pursuant to a director compensation plan.

F3 · balance_after: This amount includes shares of common stock purchased for the same transaction date through the automatic reinvestment of dividends under the ACNB Corporation Dividend Reinvestment and Stock Purchase Plan, which are exempt from the reporting requirements of Section 16 of the Securities Exchange Act of 1934.

SEC source: 0001628280-26-018503 · wk-form4_1773762013.xml · nonDerivative · entry 2

FULK BRETT D · CIK 0001224269 · ACNB Bank EVP

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,971.6283

F1 · deemedExecutionDate: The date of execution was determined in accordance with SEC Rule 16a-3(g)(2) and (g)(4).

F3 · shares: The shares disposed were withheld by the Issuer and/or its subsidiary ACNB Bank for payment of the tax liability by withholding of securities, on the first one-third (1/3) vested as of the Grant Date of March 13, 2026, in accordance with SEC Rule 16b-1. For clarification, the executive did not sell the shares.

SEC source: 0001628280-26-018503 · wk-form4_1773762013.xml · nonDerivative · entry 1

FULK BRETT D · CIK 0001224269 · ACNB Bank EVP

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 4,286.8121

F1 · deemedExecutionDate: The date of execution was determined in accordance with SEC Rule 16a-3(g)(2) and (g)(4).

F2 · shares: One-third (1/3) of this Variable Equity Award, granted in the form of restricted stock under the ACNB Bank Variable Compensation Plan and pursuant to the ACNB Corporation 2018 Omnibus Stock Incentive Plan, is 100% vested as of the Grant Date of March 13, 2026, with the next one-third (1/3) 100% vested as of January 1, 2027, and the final one-third (1/3) 100% vested as of January 1, 2028.

SEC source: 0001628280-26-018504 · wk-form4_1773762018.xml · nonDerivative · entry 1

Draganosky Eugene J. · CIK 0002055135 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 13,312.9912

F1 · deemedExecutionDate: The date of execution was determined in accordance with SEC Rule 16a-3(g)(2) and (g)(4).

F2 · shares: The shares represent stock received as compensation for service as a director pursuant to a director compensation plan.

F3 · balance_after: This amount includes shares of common stock purchased for the same transaction date through the automatic reinvestment of dividends under the ACNB Corporation Dividend Reinvestment and Stock Purchase Plan, which are exempt from the reporting requirements of Section 16 of the Securities Exchange Act of 1934.

SEC source: 0001628280-26-018502 · wk-form4_1773762005.xml · nonDerivative · entry 2

ELSNER FRANK III · CIK 0001271480 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 28,483.6342

F1 · deemedExecutionDate: The date of execution was determined in accordance with SEC Rule 16a-3(g)(2) and (g)(4).

F3 · balance_after: This amount includes shares of common stock purchased for the same transaction date through the automatic reinvestment of dividends under the ACNB Corporation Dividend Reinvestment and Stock Purchase Plan, which are exempt from the reporting requirements of Section 16 of the Securities Exchange Act of 1934.

SEC source: 0001628280-26-018502 · wk-form4_1773762005.xml · nonDerivative · entry 1

ELSNER FRANK III · CIK 0001271480 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 28,459.5015

F1 · deemedExecutionDate: The date of execution was determined in accordance with SEC Rule 16a-3(g)(2) and (g)(4).

F2 · shares: The shares represent stock received as compensation for service as a director pursuant to a director compensation plan.

F3 · balance_after: This amount includes shares of common stock purchased for the same transaction date through the automatic reinvestment of dividends under the ACNB Corporation Dividend Reinvestment and Stock Purchase Plan, which are exempt from the reporting requirements of Section 16 of the Securities Exchange Act of 1934.

SEC source: 0001628280-26-018501 · wk-form4_1773761997.xml · nonDerivative · entry 1

Potts Daniel W · CIK 0001350905 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 10,044.1174

F1 · deemedExecutionDate: The date of execution was determined in accordance with SEC Rule 16a-3(g)(2) and (g)(4).

F2 · shares: The shares represent stock received as compensation for service as a director pursuant to a director compensation plan.

F3 · balance_after: This amount includes shares of common stock purchased for the same transaction date through the automatic reinvestment of dividends under the ACNB Corporation Dividend Reinvestment and Stock Purchase Plan, which are exempt from the reporting requirements of Section 16 of the Securities Exchange Act of 1934.

SEC source: 0001628280-26-018498 · wk-form4_1773761970.xml · nonDerivative · entry 1

Chaney Kimberly S · CIK 0001800429 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,808.2801

F1 · deemedExecutionDate: The date of execution was determined in accordance with SEC Rule 16a-3(g)(2) and (g)(4).

F2 · shares: The shares represent stock received as compensation for service as a director pursuant to a director compensation plan.

F3 · balance_after: This amount includes shares of common stock purchased for the same transaction date through the automatic reinvestment of dividends under the ACNB Corporation Dividend Reinvestment and Stock Purchase Plan, which are exempt from the reporting requirements of Section 16 of the Securities Exchange Act of 1934.

SEC source: 0001628280-26-018500 · wk-form4_1773761990.xml · nonDerivative · entry 2

Berwager Emily E · CIK 0001972643 · ACNB Bank SVP

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 6,026.3114

F1 · deemedExecutionDate: The date of execution was determined in accordance with SEC Rule 16a-3(g)(2) and (g)(4).

F3 · shares: The shares disposed were withheld by the Issuer and/or its subsidiary ACNB Bank for payment of the tax liability by withholding of securities, on the first one-third (1/3) vested as of the Grant Date of March 13, 2026, in accordance with SEC Rule 16b-1. For clarification, the executive did not sell the shares.

SEC source: 0001628280-26-018500 · wk-form4_1773761990.xml · nonDerivative · entry 1

Berwager Emily E · CIK 0001972643 · ACNB Bank SVP

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 6,207.3741

F1 · deemedExecutionDate: The date of execution was determined in accordance with SEC Rule 16a-3(g)(2) and (g)(4).

F2 · shares: One-third (1/3) of this Variable Equity Award, granted in the form of restricted stock under the ACNB Bank Variable Compensation Plan and pursuant to the ACNB Corporation 2018 Omnibus Stock Incentive Plan, is 100% vested as of the Grant Date of March 13, 2026, with the next one-third (1/3) 100% vested as of January 1, 2027, and the final one-third (1/3) 100% vested as of January 1, 2028.

SEC source: 0001628280-26-018499 · wk-form4_1773761980.xml · nonDerivative · entry 1

Lott James J · CIK 0001399227 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 18,854.4553

F1 · deemedExecutionDate: The date of execution was determined in accordance with SEC Rule 16a-3(g)(2) and (g)(4).

F2 · shares: The shares represent stock received as compensation for service as a director pursuant to a director compensation plan.

F3 · balance_after: This amount includes shares of common stock purchased for the same transaction date through the automatic reinvestment of dividends under the ACNB Corporation Dividend Reinvestment and Stock Purchase Plan, which are exempt from the reporting requirements of Section 16 of the Securities Exchange Act of 1934.

SEC source: 0001628280-26-018495 · wk-form4_1773761957.xml · nonDerivative · entry 1

Newell Donna M · CIK 0001549564 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 12,259.916

F1 · deemedExecutionDate: The date of execution was determined in accordance with SEC Rule 16a-3(g)(2) and (g)(4).

F2 · shares: The shares represent stock received as compensation for service as a director pursuant to a director compensation plan.

F3 · balance_after: This amount includes shares of common stock purchased for the same transaction date through the automatic reinvestment of dividends under the ACNB Corporation Dividend Reinvestment and Stock Purchase Plan, which are exempt from the reporting requirements of Section 16 of the Securities Exchange Act of 1934.

SEC source: 0001628280-26-018497 · wk-form4_1773761964.xml · nonDerivative · entry 1

Herring Todd L · CIK 0001710848 · Director · Vice Chairman of the Board

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 10,657.2524

F1 · deemedExecutionDate: The date of execution was determined in accordance with SEC Rule 16a-3(g)(2) and (g)(4).

F2 · shares: The shares represent stock received as compensation for service as a director pursuant to a director compensation plan.

F3 · balance_after: This amount includes shares of common stock purchased for the same transaction date through the automatic reinvestment of dividends under the ACNB Corporation Dividend Reinvestment and Stock Purchase Plan, which are exempt from the reporting requirements of Section 16 of the Securities Exchange Act of 1934.

SEC source: 0001628280-26-018493 · wk-form4_1773761942.xml · nonDerivative · entry 1

Chiaruttini Alexandra C · CIK 0001828738 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,963.2191

F1 · deemedExecutionDate: The date of execution was determined in accordance with SEC Rule 16a-3(g)(2) and (g)(4).

F2 · shares: The shares represent stock received as compensation for service as a director pursuant to a director compensation plan.

F3 · balance_after: This amount includes shares of common stock purchased for the same transaction date through the automatic reinvestment of dividends under the ACNB Corporation Dividend Reinvestment and Stock Purchase Plan, which are exempt from the reporting requirements of Section 16 of the Securities Exchange Act of 1934.

SEC source: 0001628280-26-018494 · wk-form4_1773761948.xml · nonDerivative · entry 1

Polli John M. · CIK 0002055170 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 35,860.2887

F1 · deemedExecutionDate: The date of execution was determined in accordance with SEC Rule 16a-3(g)(2) and (g)(4).

F2 · shares: The shares represent stock received as compensation for service as a director pursuant to a director compensation plan.

F3 · balance_after: This amount includes shares of common stock purchased for the same transaction date through the automatic reinvestment of dividends under the ACNB Corporation Dividend Reinvestment and Stock Purchase Plan, which are exempt from the reporting requirements of Section 16 of the Securities Exchange Act of 1934.

SEC source: 0001628280-26-018491 · wk-form4_1773761937.xml · nonDerivative · entry 1

Carson Elizabeth F. · CIK 0002055139 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 12,948.0812

F1 · deemedExecutionDate: The date of execution was determined in accordance with SEC Rule 16a-3(g)(2) and (g)(4).

F2 · shares: The shares represent stock received as compensation for service as a director pursuant to a director compensation plan.

F3 · balance_after: This amount includes shares of common stock purchased for the same transaction date through the automatic reinvestment of dividends under the ACNB Corporation Dividend Reinvestment and Stock Purchase Plan, which are exempt from the reporting requirements of Section 16 of the Securities Exchange Act of 1934.

SEC source: 0001628280-26-018489 · wk-form4_1773761923.xml · nonDerivative · entry 1

Stock Alan J · CIK 0001343134 · Director · Chairman of the Board

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 87,917.3314

F1 · deemedExecutionDate: The date of execution was determined in accordance with SEC Rule 16a-3(g)(2) and (g)(4).

F2 · shares: The shares represent stock received as compensation for service as a director pursuant to a director compensation plan.

F3 · balance_after: This amount includes shares of common stock purchased for the same transaction date through the automatic reinvestment of dividends under the ACNB Corporation Dividend Reinvestment and Stock Purchase Plan, which are exempt from the reporting requirements of Section 16 of the Securities Exchange Act of 1934.

SEC source: 0001628280-26-018490 · wk-form4_1773761931.xml · nonDerivative · entry 2

Hayes Kevin J · CIK 0001972468 · SVP/Secretary & Gen. Counsel

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 4,134.0233

F1 · deemedExecutionDate: The date of execution was determined in accordance with SEC Rule 16a-3(g)(2) and (g)(4).

F3 · shares: The shares disposed were withheld by the Issuer and/or its subsidiary ACNB Bank for payment of the tax liability by withholding of securities, on the first one-third (1/3) vested as of the Grant Date of March 13, 2026, in accordance with SEC Rule 16b-1. For clarification, the executive did not sell the shares.

SEC source: 0001628280-26-018490 · wk-form4_1773761931.xml · nonDerivative · entry 1

Hayes Kevin J · CIK 0001972468 · SVP/Secretary & Gen. Counsel

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 4,326.2713

F1 · deemedExecutionDate: The date of execution was determined in accordance with SEC Rule 16a-3(g)(2) and (g)(4).

F2 · shares: One-third (1/3) of this Variable Equity Award, granted in the form of restricted stock under the ACNB Bank Variable Compensation Plan and pursuant to the ACNB Corporation 2018 Omnibus Stock Incentive Plan, is 100% vested as of the Grant Date of March 13, 2026, with the next one-third (1/3) 100% vested as of January 1, 2027, and the final one-third (1/3) 100% vested as of January 1, 2028

SEC source: 0001628280-26-018488 · wk-form4_1773761915.xml · nonDerivative · entry 2

Bradley Andrew A · CIK 0001977972 · ACNB Bank SVP/Chief Risk Off.

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,695.5759

F3 · shares: The shares disposed were withheld by the Issuer and/or its subsidiary ACNB Bank for payment of the tax liability by withholding of securities, on the first one-third (1/3) vested as of the Grant Date of March 13, 2026, in accordance with SEC Rule 16b-1. For clarification, the executive did not sell the shares.

SEC source: 0001628280-26-018488 · wk-form4_1773761915.xml · nonDerivative · entry 1

Bradley Andrew A · CIK 0001977972 · ACNB Bank SVP/Chief Risk Off.

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,887.775

F1 · deemedExecutionDate: The date of execution was determined in accordance with SEC Rule 16a-3(g)(2) and (g)(4).

F2 · shares: One-third (1/3) of this Variable Equity Award, granted in the form of restricted stock under the ACNB Bank Variable Compensation Plan and pursuant to the ACNB Corporation 2018 Omnibus Stock Incentive Plan, is 100% vested as of the Grant Date of March 13, 2026, with the next one-third (1/3) 100% vested as of January 1, 2027, and the final one-third (1/3) 100% vested as of January 1, 2028

SEC source: 0001628280-26-018486 · wk-form4_1773761902.xml · nonDerivative · entry 2

Laub Laurie A · CIK 0001708167 · ACNB Bank EVP

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 17,693.1077

F1 · deemedExecutionDate: The date of execution was determined in accordance with SEC Rule 16a-3(g)(2) and (g)(4).

F3 · shares: The shares disposed were withheld by the Issuer and/or its subsidiary ACNB Bank for payment of the tax liability by withholding of securities, on the first one-third (1/3) vested as of the Grant Date of March 13, 2026, in accordance with SEC Rule 16b-1. For clarification, the executive did not sell the shares.

SEC source: 0001628280-26-018486 · wk-form4_1773761902.xml · nonDerivative · entry 1

Laub Laurie A · CIK 0001708167 · ACNB Bank EVP

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 18,066.9718

F1 · deemedExecutionDate: The date of execution was determined in accordance with SEC Rule 16a-3(g)(2) and (g)(4).

F2 · shares: One-third (1/3) of this Variable Equity Award, granted in the form of restricted stock under the ACNB Bank Variable Compensation Plan and pursuant to the ACNB Corporation 2018 Omnibus Stock Incentive Plan, is 100% vested as of the Grant Date of March 13, 2026, with the next one-third (1/3) 100% vested as of January 1, 2027, and the final one-third (1/3) 100% vested as of January 1, 2028

SEC source: 0001628280-26-018487 · wk-form4_1773761907.xml · nonDerivative · entry 2

Seibel Douglas A · CIK 0001708277 · ACNB Bank EVP

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 22,060.3198

F1 · deemedExecutionDate: The date of execution was determined in accordance with SEC Rule 16a-3(g)(2) and (g)(4).

F3 · shares: The shares disposed were withheld by the Issuer and/or its subsidiary ACNB Bank for payment of the tax liability by withholding of securities, on the first one-third (1/3) vested as of the Grant Date of March 13, 2026, in accordance with SEC Rule 16b-1. For clarification, the executive did not sell the shares.