Peter J. Gundermann - 03 Mar 2026 Form 4 Insider Report for ASTRONICS CORP (ATRO)

Reporting relationship: PRESIDENT/CEO, Director
Issuer ticker: ATRO
Reported as of: 03 Mar 2026
Net transaction value: $0
SEC form: 4
Accepted by SEC: 05 Mar 2026, 16:23:18 UTC
Prior SEC filing: 23 Feb 2026
Next SEC filing: 17 Jun 2026
Source filing: View source filing
Reporting owner signature: /S/JULIE DAVIS, AS POWER OF ATTORNEY FOR PETER J. GUNDERMANN

Key filing fact

Peter J. Gundermann filed Form 4 for ASTRONICS CORP (ATRO) on 05 Mar 2026.

Key facts

This page summarizes Peter J. Gundermann's Form 4 filing for ASTRONICS CORP (ATRO).
3 reported transactions and 16 derivative rows are listed below.
Accepted by SEC: 05 Mar 2026, 16:23.

Change

Previous filing in this sequence was filed on 23 Feb 2026.
Current net transaction value: $0.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001182854 Primary reporting owner

GUNDERMANN PETER J

Relationship: PRESIDENT/CEO, Director
Address: 130 COMMERCE WAY, EAST AURORA
Signature: /S/JULIE DAVIS, AS POWER OF ATTORNEY FOR PETER J. GUNDERMANN
Signature date: 05 Mar 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

ATRO transaction

$.01 PV Com Stk

Options Exercise

Transaction value
Shares: +13,550
Change %: +16%
Price: $81.35^*
Shares after: 97,457
Date: 03 Mar 2026
Ownership: Direct

ATRO transaction

$.01 PV Com Stk

Tax liability

Transaction value
Shares: -3,489
Change %: -3.6%
Price: $81.35^*
Shares after: 93,968
Date: 03 Mar 2026
Ownership: Direct
Footnotes: F1

ATRO holding

$.01 PV CL B STK

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 747,911
Date: 03 Mar 2026
Ownership: Direct

Reported derivative securities

Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.

ATRO transaction Derivative

Restricted Stock Unit

Options Exercise

Transaction value
Shares: -13,550
Change %: -100%
Price: $0.000000^*
Shares after: 0
Date: 03 Mar 2026
Ownership: Direct
Underlying class: $.01 PV Com Stk
Underlying amount: 13,550
Exercise price
Footnotes: F2, F6

ATRO holding Derivative

Option

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 14,460
Date: 03 Mar 2026
Ownership: Direct
Underlying class: $.01 PV Com Stk
Underlying amount: 14,460
Exercise price: $31.76

ATRO holding Derivative

Option

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 2,169
Date: 03 Mar 2026
Ownership: Direct
Underlying class: $.01 PV CL B STK
Underlying amount: 2,169
Exercise price: $31.76

ATRO holding Derivative

Option

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 26,300
Date: 03 Mar 2026
Ownership: Direct
Underlying class: $.01 PV Com Stk
Underlying amount: 26,300
Exercise price: $35.61

ATRO holding Derivative

Option

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 3,945
Date: 03 Mar 2026
Ownership: Direct
Underlying class: $.01 PV CL B STK
Underlying amount: 3,945
Exercise price: $35.61

ATRO holding Derivative

Option

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 34,790
Date: 03 Mar 2026
Ownership: Direct
Underlying class: $.01 PV Com Stk
Underlying amount: 34,790
Exercise price: $31.57

ATRO holding Derivative

Option

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 61,200
Date: 03 Mar 2026
Ownership: Direct
Underlying class: $.01 PV Com Stk
Underlying amount: 61,200
Exercise price: $30.04

ATRO holding Derivative

Option

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 98,900
Date: 03 Mar 2026
Ownership: Direct
Underlying class: $.01 PV Com Stk
Underlying amount: 98,900
Exercise price: $14.45

ATRO holding Derivative

Option

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 115,800
Date: 03 Mar 2026
Ownership: Direct
Underlying class: $.01 PV Com Stk
Underlying amount: 115,800
Exercise price: $11.13

ATRO holding Derivative

Option

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 125,000
Date: 03 Mar 2026
Ownership: Direct
Underlying class: $.01 PV Com Stk
Underlying amount: 125,000
Exercise price: $9.74

ATRO holding Derivative

Option

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 83,900
Date: 03 Mar 2026
Ownership: Direct
Underlying class: $.01 PV Com Stk
Underlying amount: 83,900
Exercise price: $15.15

ATRO holding Derivative

Restricted Stock Unit

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 26,450
Date: 03 Mar 2026
Ownership: Direct
Underlying class: $.01 PV Com Stk
Underlying amount: 26,450
Exercise price
Footnotes: F2, F3

ATRO holding Derivative

Option

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 75,800
Date: 03 Mar 2026
Ownership: Direct
Underlying class: $.01 PV Com Stk
Underlying amount: 75,800
Exercise price: $16.55

ATRO holding Derivative

Restricted Stock Unit

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 25,250
Date: 03 Mar 2026
Ownership: Direct
Underlying class: $.01 PV Com Stk
Underlying amount: 25,250
Exercise price
Footnotes: F2, F4

ATRO holding Derivative

Option

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 29,750
Date: 03 Mar 2026
Ownership: Direct
Underlying class: $.01 PV Com Stk
Underlying amount: 29,750
Exercise price: $51.72

ATRO holding Derivative

Restricted Stock Unit

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 12,150
Date: 03 Mar 2026
Ownership: Direct
Underlying class: $.01 PV Com Stk
Underlying amount: 12,150
Exercise price
Footnotes: F2, F5

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 6 footnotes

Footnote F1

Shares withheld by Astronics Corp. to satisfy applicable withholding tax upon vesting of restricted stock units.

Footnote F2

Each restricted stock unit represents the right to receive, at settlement, one share of common stock.

Footnote F3

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.

Footnote F4

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.

Footnote F5

Vesting of these restricted stock units depends on Astronics Corp.'s average annual adjusted EBITDA for the period January 1, 2026- December 31, 2028. The "target" number of restricted stock units is reported. Between 50% and 150% of the target number of units may vest on February 19, 2029, with the vesting percentage determined based on actual performance.

Footnote F6

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 amount shown reflects 100% of the target number of restricted stock units which vested on February 23, 2026.