ACNB chair awarded 211 shares for board service

ACNB CORP (ACNB) reported that director and Chairman of the Board Alan J. Stock received an award of 210.5989 shares of ACNB Corporation Common on September 15, 2026 as a grant of stock compensation for board service.

Rhea-AI Filing Summary

ACNB CORP (ACNB) reported that director and Chairman of the Board Alan J. Stock received an award of 210.5989 shares of ACNB Corporation Common on September 15, 2026 as a grant of stock compensation for board service. No Rule 10b5-1 trading plan is reported.

Following this award, his directly held position reported in this filing is 88,638.5371 shares, which includes shares acquired the same day through automatic dividend reinvestment under the ACNB Corporation Dividend Reinvestment and Stock Purchase Plan.

Insider Trade Summary

Grant/Award: 210.5989 shares

Grant/Award 1 txn

Insider Stock Alan J

Role Director

Type	Security	Shares	Price	Value
Grant/Award	ACNB Corporation Common F1, F2, F3	210.5989	$65.29	$14K

Holdings After Transaction: ACNB Corporation Common — 88,638.5371 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. The shares represent stock received as compensation for service as a director pursuant to a director compensation plan.
3. F3. 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.

Key Figures

Shares acquired as stock award: 210.5989 shares Award valuation price: $65.29 per share Shares held after transaction: 88,638.5371 shares

3 metrics

Shares acquired as stock award 210.5989 shares Grant of ACNB Corporation Common on September 15, 2026

Award valuation price $65.29 per share Valuation of stock compensation for director service

Shares held after transaction 88,638.5371 shares Direct holdings of Alan J. Stock after September 15, 2026 award and dividend reinvestment

Key Terms

director compensation plan, Dividend Reinvestment and Stock Purchase Plan, Section 16 of the Securities Exchange Act of 1934, SEC Rule 16a-3(g)(2) and (g)(4)

4 terms

director compensation plan financial

"stock received as compensation for service as a director pursuant to a director compensation plan"

Dividend Reinvestment and Stock Purchase Plan financial

"automatic reinvestment of dividends under the ACNB Corporation Dividend Reinvestment and Stock Purchase Plan"

A dividend reinvestment and stock purchase plan lets investors automatically use cash dividends to buy additional shares and often make extra share purchases directly from the company, usually at low or no commission. Think of it as an automatic savings plan for stock: dividends and optional contributions are turned into more shares, helping ownership grow through compounding and making regular investing simple and low-cost—key for long-term investors.

Section 16 of the Securities Exchange Act of 1934 regulatory

"exempt from the reporting requirements of Section 16 of the Securities Exchange Act of 1934"

A provision of federal securities law that requires company insiders—directors, officers and large shareholders—to publicly report their stock holdings and trades and to surrender any “short-swing” profits from purchases and sales within a six-month window. It acts like a rule that forces leaders to announce their trades and prevents quick buy-sell windfalls, giving investors transparency into insider activity and reducing opportunities for unfair gain.

SEC Rule 16a-3(g)(2) and (g)(4) regulatory

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

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What insider transaction did ACNB (ACNB) disclose for Alan J. Stock?

ACNB disclosed that director and Chairman of the Board Alan J. Stock received an award of 210.5989 shares of ACNB Corporation Common as stock compensation for his service as a director on September 15, 2026.

At what price was the ACNB (ACNB) stock compensation award valued?

The reported stock compensation award to Alan J. Stock was valued at $65.29 per share for 210.5989 shares of ACNB Corporation Common.

How many ACNB (ACNB) shares does Alan J. Stock hold after this transaction?

After the September 15, 2026 stock award and related dividend reinvestment, Alan J. Stock is reported as directly holding 88,638.5371 shares of ACNB Corporation Common.

Was Alan J. Stock’s ACNB (ACNB) stock award made under a Rule 10b5-1 plan?

No. The Form 4 indicates the Rule 10b5-1 checkbox is not marked, and there is no footnote stating that the September 15, 2026 stock award was made under a Rule 10b5-1 trading plan.

What is the source of the ACNB (ACNB) shares received by Alan J. Stock?

The filing states the shares represent stock received as compensation for service as a director under a director compensation plan. It also notes that his reported holdings include shares purchased the same date through automatic dividend reinvestment.

Are all ACNB (ACNB) shares in this filing subject to Section 16 reporting?

No. A footnote explains that some shares were purchased through 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.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Available on EDGAR 09/17/2026 - 09:53 AM Accepted by SEC EDGAR 09/17/2026 - 09:53 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^*

Stock Alan J

(Last) (First) (Middle)

16 LINCOLN SQUARE

(Street)

GETTYSBURG PENNSYLVANIA 17325

(City) (State) (Zip)

UNITED STATES

(Country)

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)	X	Other (specify below)
			Chairman of the Board

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
09/15/2026

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

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

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

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	09/15/2026	09/16/2026(1)	A		210.5989(2)	A	$65.29	88,638.5371(3)	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. 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 Alan J. Stock	09/17/2026
	** 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.
* Form 4: SEC 1474 (03-26)