ACNB CORP (ACNB) director granted stock compensation shares

Rhea-AI Filing Summary

Seibel Donald Arthur Jr reported acquisition or exercise transactions in this Form 4 filing.

ACNB CORP director Donald Arthur Seibel Jr. reported receiving 296.2085 shares of ACNB Corporation Common on March 13 as a stock award. The shares were valued at $46.42 each and were granted as compensation for his service as a director under a director compensation plan.

After this grant, Seibel directly holds 6,464.912 shares. He also has indirect ownership of 12,712.658 shares held through a trust, giving him both direct and trust-based exposure to ACNB CORP stock.

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

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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 Donald Arthur Jr

(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)

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

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		296.2085(2)	A	$46.42	6,464.912(3)	D
ACNB Corporation Common								12,712.658(3)	I	Trust

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

3. 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.

Remarks:

	/s/ Kevin J. Hayes as POA for Donald Arthur Seibel, Jr.	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).
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FAQ

What insider transaction did ACNB (ACNB) disclose for Donald Arthur Seibel Jr.?

ACNB CORP disclosed that director Donald Arthur Seibel Jr. received 296.2085 shares of ACNB Corporation Common on March 13 as a stock award. The grant was compensation for board service, not an open-market stock purchase or sale.

How many ACNB CORP shares did the director receive and at what value?

The director received 296.2085 shares of ACNB Corporation Common, valued at $46.42 per share. This was a stock grant under a director compensation plan, providing additional equity exposure without the director buying shares in the open market.

What are Donald Arthur Seibel Jr.’s total ACNB share holdings after this Form 4?

After the reported grant, Seibel directly holds 6,464.912 ACNB shares. The filing also shows 12,712.658 shares held indirectly through a trust, indicating a combined direct and trust-based position in ACNB stock reported in this Form 4.

Was the ACNB director’s Form 4 transaction a stock purchase or a compensation grant?

The Form 4 shows a compensation grant, not a purchase. The 296.2085 shares were received as stock-based compensation for serving as a director under ACNB’s director compensation plan, rather than being bought in the open market by the director.

How are the indirect ACNB shareholdings of the director structured?

The filing reports 12,712.658 ACNB shares as indirect holdings classified as “Trust.” This means those shares are held in a trust associated with the director, providing indirect ownership in addition to his directly held shares reported in the same filing.