PETER J. GUNDERMANN - 20 Nov 2025 Form 4/A - Amendment Insider Report for ASTRONICS CORP (ATRO)

Role: PRESIDENT/CEO, Director
Signature: /S/JULIE DAVIS, AS POWER OF ATTORNEY FOR PETER J. GUNDERMANN
Issuer symbol: ATRO
Transactions as of: 20 Nov 2025
Transactions value $: -$577,740
Form type: 4/A - Amendment
Filing time: 24 Nov 2025, 16:04:06 UTC
Date Of Original Report: 03 Apr 2025
Previous filing: 13 Nov 2025
Next filing: 08 Dec 2025
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
GUNDERMANN PETER J	PRESIDENT/CEO, Director	130 COMMERCE WAY, EAST AURORA	/S/JULIE DAVIS, AS POWER OF ATTORNEY FOR PETER J. GUNDERMANN	24 Nov 2025	0001182854

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	ATRO	$.01 PV Com Stk	Options Exercise	$380K	+13.7K	+16.72%	$27.72	95.6K	20 Nov 2025	Direct	F1
transaction	ATRO	$.01 PV Com Stk	Tax liability	-$578K	-11.7K	-12.24%	$49.35	83.9K	20 Nov 2025	Direct	F2
transaction	ATRO	$.01 PV CL B STK	Options Exercise	$122K	+4.42K	+0.59%	$27.72	748K	20 Nov 2025	Direct	F1

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
transaction	ATRO	Option	Options Exercise	-$380K	-13.7K	-100%	$27.72	0	20 Nov 2025	$.01 PV Com Stk	13.7K	$27.72	Direct
transaction	ATRO	Option	Options Exercise	-$122K	-4.42K	-100%	$27.72	0	20 Nov 2025	$.01 PV CL B STK	4.42K	$27.72	Direct
holding	ATRO	Option						14.5K	20 Nov 2025	$.01 PV Com Stk	14.5K	$31.76	Direct
holding	ATRO	Option						2.17K	20 Nov 2025	$.01 PV CL B STK	2.17K	$31.76	Direct
holding	ATRO	Option						26.3K	20 Nov 2025	$.01 PV Com Stk	26.3K	$35.61	Direct
holding	ATRO	Option						3.95K	20 Nov 2025	$.01 PV CL B STK	3.95K	$35.61	Direct
holding	ATRO	Option						34.8K	20 Nov 2025	$.01 PV Com Stk	34.8K	$31.57	Direct
holding	ATRO	Option						61.2K	20 Nov 2025	$.01 PV Com Stk	61.2K	$30.04	Direct
holding	ATRO	Option						98.9K	20 Nov 2025	$.01 PV Com Stk	98.9K	$14.45	Direct
holding	ATRO	Option						116K	20 Nov 2025	$.01 PV Com Stk	116K	$11.13	Direct
holding	ATRO	Option						125K	20 Nov 2025	$.01 PV Com Stk	125K	$9.74	Direct
holding	ATRO	Option						83.9K	20 Nov 2025	$.01 PV Com Stk	83.9K	$15.15	Direct
holding	ATRO	Restricted Stock Unit						9.21K	20 Nov 2025	$.01 PV Com Stk	9.21K		Direct	F3, F4
holding	ATRO	Restricted Stock Unit						26.5K	20 Nov 2025	$.01 PV Com Stk	26.5K		Direct	F3, F5
holding	ATRO	Option						75.8K	20 Nov 2025	$.01 PV Com Stk	75.8K	$16.55	Direct
holding	ATRO	Restricted Stock Unit						25.3K	20 Nov 2025	$.01 PV Com Stk	25.3K		Direct	F3, F6

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	Shares acquired upon exercise of stock options.
F2	Shares withheld by Astronics Corp. to satisfy applicable withholding tax upon exercising option.
F3	Each restricted stock unit represents the right to receive, at settlement, one share of common stock.
F4	Vesting of these restricted stock units depends on Astronics Corp.'s average annual adjusted EBITDA for the period January 1, 2023- December 31, 2025. The "target" number of restricted stock units is reported. Between 75% and 115% of the target number of units may vest on February 23, 2026, with the vesting percentage determined based on actual performance.
F5	Vesting of these restricted stock units depends on Astronics Corp.'s average annual adjusted EBITDA for the period January 1, 2024- December 31, 2026. The "target" number of restricted stock units is reported. Between 50% and 150% of the target number of units may vest on February 23, 2027, with the vesting percentage determined based on actual performance.
F6	Vesting of these restricted stock units depends on Astronics Corp.'s average annual adjusted EBITDA for the period January 1, 2025- December 31, 2027. The "target" number of restricted stock units is reported. Between 50% and 150% of the target number of units may vest on February 27, 2028, with the vesting percentage determined based on actual performance.