Form 4 for ACNB ACNB CORP

Accepted 2026-03-17 00:00:00 ET · period of report 2026-03-13 · accession 0001628280-26-018487 · SEC index · Original document

Summary rows

Aggregated the way they appear in lists: one row per insider, transaction code and security table.

X	Filed	Traded	Ticker	Insider	Title	Type	Price	Qty	Owned	ΔOwn	Value
	2026-03-17	2026-03-13	ACNB	Seibel Douglas A	ACNB Bank EVP	A - Grant	$46.42	+3,132	22.4K	+16%	+$145.4K
	2026-03-17	2026-03-13	ACNB	Seibel Douglas A	ACNB Bank EVP	F - Tax	$46.42	-297.43	22.1K	-1%	-$13.8K

Purchase Sale Sale after option exercise All abbreviations

#	Table	Security	Date	Code	A/D	Shares	Price	Owned after	Own	Exercise / expiry	Underlying	Footnotes
1	Common	ACNB Corporation Common	2026-03-13	A	A	3,131.93	$46.42	22,357.75	D	—	—	(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
2	Common	ACNB Corporation Common	2026-03-13	F	D	297.43	$46.42	22,060.32	D	—	—	(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.