Form 4 for ATRO ASTRONICS CORP

Accepted 2026-06-17 16:14:40 ET · period of report 2026-06-15 · accession 0001628280-26-043894 · 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
	2026-06-17 16:14	2026-06-15	ATRO	Keane Robert S	Dir	J - Other	$0.00	+2,786	2,786	New	$0
MI	2026-06-17 16:14	2026-06-15	ATRO	Keane Robert S	Dir	J - Other	$0.00	+83.0K	248.3K	+50%	$0

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	$.01 PV CL B STK	2026-06-15	J	A	2,786	$0.00	2,786	D	—	—	(F1) Shares issued pursuant to a one-for-five distribution of Class B stock to holders of both Common and Class B stock on the record date of June 15, 2026.
2	Common	$.01 PV CL B STK	2026-06-15	J	A	41,639	$0.00	249,838	I Note	—	—	(F1) Shares issued pursuant to a one-for-five distribution of Class B stock to holders of both Common and Class B stock on the record date of June 15, 2026. (F2) The direct owner is Boston & Saranac LLC, a Delaware limited liability company ("Boston & Saranac"). Boston & Saranac is 100% owned by a trust whose beneficiaries are the Reporting Person and his spouse
3	Common	$.01 PV CL B STK	2026-06-15	J	A	41,377	$0.00	248,263	I Note	—	—	(F1) Shares issued pursuant to a one-for-five distribution of Class B stock to holders of both Common and Class B stock on the record date of June 15, 2026. (F3) Reporting Person is one of multiple potential beneficiaries to the direct owner of these shares, which is a trust (EAK & KRK Trust U/A/D 10-15-97 FBO Elizabeth A. Keane). The entire amount of the trust's interest is reported on this form, however the Reporting Person's proportionate interest is below 25%.