ACNB director granted 210.6 shares at $65.29

ACNB director Alexandra C. Chiaruttini received additional common shares as board compensation, bringing her directly owned holdings to just over 3,452 shares.

Rhea-AI Filing Summary

ACNB CORP (ACNB) reported that director Alexandra C. Chiaruttini acquired 210.5989 shares of ACNB Corporation Common on September 15, 2026 as stock received as compensation for service as a director under a director compensation plan, at a reported price of $65.29 per share. Following this grant and including shares purchased the same day through automatic dividend reinvestment under the ACNB Corporation Dividend Reinvestment and Stock Purchase Plan, she holds 3,452.0905 directly owned shares. No Rule 10b5-1 trading plan is reported.

Insider Trade Summary

Grant/Award: 210.5989 shares

Grant/Award 1 txn

Insider Chiaruttini Alexandra C

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 — 3,452.0905 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 director compensation: 210.5989 shares Reported value per share: $65.29 per share Shares owned after transaction: 3,452.0905 shares

3 metrics

Shares acquired as director compensation 210.5989 shares Grant of ACNB Corporation Common on September 15, 2026

Reported value per share $65.29 per share Director stock compensation acquisition on September 15, 2026

Shares owned after transaction 3,452.0905 shares Directly owned ACNB Corporation Common following the September 15, 2026 transactions

Key Terms

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

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

"through the 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

"which are 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.

Rule 16a-3(g)(2) regulatory

"The 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 director Alexandra C. Chiaruttini report on this Form 4 for ACNB?

She acquired 210.5989 shares of ACNB Corporation Common on September 15, 2026 as stock compensation for service as a director under a director compensation plan.

At what price were the new ACNB (ACNB) shares attributed to Alexandra C. Chiaruttini valued?

The reported value for the acquired shares is $65.29 per share, as shown for the September 15, 2026 stock compensation transaction in ACNB Corporation Common.

How many ACNB (ACNB) shares does Alexandra C. Chiaruttini own after this reported transaction?

After the reported transactions, she directly owns 3,452.0905 shares of ACNB Corporation Common, including shares acquired the same day through automatic dividend reinvestment.

What is the nature of the ACNB (ACNB) shares acquired by Alexandra C. Chiaruttini?

The acquired shares represent stock received as compensation for service as a director, granted pursuant to an ACNB Corporation director compensation plan.

Were dividend reinvestment shares included in Alexandra C. Chiaruttini’s ACNB (ACNB) total?

Yes. The post-transaction total includes shares purchased through automatic reinvestment of dividends under the ACNB Corporation Dividend Reinvestment and Stock Purchase Plan for the same transaction date.

Was Alexandra C. Chiaruttini’s ACNB (ACNB) transaction made under a Rule 10b5-1 trading plan?

No. The Form 4 indicates that no Rule 10b5-1 plan is affirmed for this transaction, and the footnotes do not state that it was made under such a plan.

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^*

Chiaruttini Alexandra C

(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)		Other (specify below)

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	3,452.0905(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:

	Kevin J. Hayes as POA for Alexandra C. Chiaruttini	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)