ACNB CORP (ACNB) EVP receives stock grant, shares withheld for taxes

Rhea-AI Filing Summary

ACNB CORP executive Douglas A. Seibel received a stock award and had shares withheld for taxes. On March 13, 2026, he was granted 3,131.9259 shares of ACNB Corporation Common at $46.42 per share as a variable equity award under company stock plans.

On the same date, 297.4283 shares were disposed of by withholding to cover tax liabilities, and the footnotes clarify the executive did not sell these shares. After these transactions, Seibel directly owned 22,060.3198 shares of ACNB Corporation Common.

Insider Trade Summary

Net Buyer: 2,834.4976 shares

Net Buy 2 txns

Insider Seibel Douglas A

Role Insider

Type	Security	Shares	Price	Value
Grant/Award	ACNB Corporation Common	3,131.9259	$46.42	$145K
Exercise Price or Tax Liability	ACNB Corporation Common	297.4283	$46.42	$14K

Holdings After Transaction: ACNB Corporation Common — 22,060.3198 shares (Direct)

Footnotes (3)

1. F1. The date of execution was determined in accordance with SEC Rule 16a-3(g)(2) and (g)(4).
2. F2. 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
3. F3. 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.

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Form 4 Insider Transactions: What Each Field Means →

Accepted by SEC EDGAR 03/17/2026 - 11:38 AM Learn about SEC filing dates

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Seibel Douglas A

(Last) (First) (Middle)

16 LINCOLN SQUARE

(Street)

GETTYSBURG PA 17325

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
ACNB CORP [ ACNB ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director		10% Owner
	Officer (give title below)	X	Other (specify below)
			ACNB Bank EVP

3. Date of Earliest Transaction (Month/Day/Year)
03/13/2026

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
ACNB Corporation Common	03/13/2026	03/16/2026(1)	A		3,131.9259(2)	A	$46.42	22,357.7481	D
ACNB Corporation Common	03/13/2026	03/16/2026(1)	F		297.4283(3)	D	$46.42	22,060.3198	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

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

2. 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

3. 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.

Remarks:

	/s/ Douglas A. Seibel	03/17/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.