GUNDERMANN PETER J 4

4 · ASTRONICS CORP · Filed Mar 5, 2026

Insider Transaction Report

Form 4

Period: 2026-03-03

ASTRONICS CORPATRO

GUNDERMANN PETER J

DirectorPRESIDENT/CEO

Transactions

Exercise/Conversion
$.01 PV Com Stk
2026-03-03$81.35/sh+13,550$1,102,293→ 97,456.608 total
Tax Payment
$.01 PV Com Stk
[F1]
2026-03-03$81.35/sh−3,489$283,830→ 93,967.608 total
Exercise/Conversion
Restricted Stock Unit
[F2][F6]
2026-03-03−13,550→ 0 total
→ $.01 PV Com Stk (13,550 underlying)

Holdings

$.01 PV CL B STK
747,911
Option
Exercise: $31.76From: 2017-12-14Exp: 2026-12-14→ $.01 PV Com Stk (14,460 underlying)
14,460
Option
Exercise: $31.76From: 2017-12-14Exp: 2026-12-14→ $.01 PV CL B STK (2,169 underlying)
2,169
Option
Exercise: $35.61From: 2018-12-12Exp: 2027-12-12→ $.01 PV Com Stk (26,300 underlying)
26,300
Option
Exercise: $35.61From: 2018-12-12Exp: 2027-12-12→ $.01 PV CL B STK (3,945 underlying)
3,945
Option
Exercise: $31.57From: 2019-12-13Exp: 2028-12-13→ $.01 PV Com Stk (34,790 underlying)
34,790
Option
Exercise: $30.04From: 2020-12-09Exp: 2029-12-09→ $.01 PV Com Stk (61,200 underlying)
61,200
Option
Exercise: $14.45From: 2022-01-22Exp: 2031-01-22→ $.01 PV Com Stk (98,900 underlying)
98,900
Option
Exercise: $11.13From: 2022-12-09Exp: 2031-12-09→ $.01 PV Com Stk (115,800 underlying)
115,800
Option
Exercise: $9.74From: 2023-12-16Exp: 2032-12-16→ $.01 PV Com Stk (125,000 underlying)
125,000
Option
Exercise: $15.15From: 2024-12-07Exp: 2033-12-07→ $.01 PV Com Stk (83,900 underlying)
83,900
Restricted Stock Unit
[F2][F3]
→ $.01 PV Com Stk (26,450 underlying)
26,450
Option
Exercise: $16.55From: 2025-12-05Exp: 2034-12-05→ $.01 PV Com Stk (75,800 underlying)
75,800
Restricted Stock Unit
[F2][F4]
→ $.01 PV Com Stk (25,250 underlying)
25,250
Option
Exercise: $51.72From: 2026-12-04Exp: 2035-12-04→ $.01 PV Com Stk (29,750 underlying)
29,750
Restricted Stock Unit
[F2][F5]
→ $.01 PV Com Stk (12,150 underlying)
12,150

Footnotes (6)

[F1]Shares withheld by Astronics Corp. to satisfy applicable withholding tax upon vesting of restricted stock units.
[F2]Each restricted stock unit represents the right to receive, at settlement, one share of common stock.
[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.
[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.
[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.
[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.

Signature

/S/JULIE DAVIS, AS POWER OF ATTORNEY FOR PETER J. GUNDERMANN|2026-03-05

Documents

1 file

4
wk-form4_1772745795.xmlPrimary
FORM 4