Peter J. Gundermann - Nov 20, 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
Stock symbol
ATRO
Transactions as of
Nov 20, 2025
Transactions value $
-$577,740
Form type
4/A - Amendment
Date filed
11/24/2025, 04:04 PM
Date Of Original Report
Apr 3, 2025
Previous filing
Nov 13, 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 2025-11-24 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 Nov 20, 2025 Direct F1
transaction ATRO $.01 PV Com Stk Tax liability -$578K -11.7K -12.24% $49.35 83.9K Nov 20, 2025 Direct F2
transaction ATRO $.01 PV CL B STK Options Exercise $122K +4.42K +0.59% $27.72 748K Nov 20, 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 Nov 20, 2025 $.01 PV Com Stk 13.7K $27.72 Direct
transaction ATRO Option Options Exercise -$122K -4.42K -100% $27.72 0 Nov 20, 2025 $.01 PV CL B STK 4.42K $27.72 Direct
holding ATRO Option 14.5K Nov 20, 2025 $.01 PV Com Stk 14.5K $31.76 Direct
holding ATRO Option 2.17K Nov 20, 2025 $.01 PV CL B STK 2.17K $31.76 Direct
holding ATRO Option 26.3K Nov 20, 2025 $.01 PV Com Stk 26.3K $35.61 Direct
holding ATRO Option 3.95K Nov 20, 2025 $.01 PV CL B STK 3.95K $35.61 Direct
holding ATRO Option 34.8K Nov 20, 2025 $.01 PV Com Stk 34.8K $31.57 Direct
holding ATRO Option 61.2K Nov 20, 2025 $.01 PV Com Stk 61.2K $30.04 Direct
holding ATRO Option 98.9K Nov 20, 2025 $.01 PV Com Stk 98.9K $14.45 Direct
holding ATRO Option 116K Nov 20, 2025 $.01 PV Com Stk 116K $11.13 Direct
holding ATRO Option 125K Nov 20, 2025 $.01 PV Com Stk 125K $9.74 Direct
holding ATRO Option 83.9K Nov 20, 2025 $.01 PV Com Stk 83.9K $15.15 Direct
holding ATRO Restricted Stock Unit 9.21K Nov 20, 2025 $.01 PV Com Stk 9.21K Direct F3, F4
holding ATRO Restricted Stock Unit 26.5K Nov 20, 2025 $.01 PV Com Stk 26.5K Direct F3, F5
holding ATRO Option 75.8K Nov 20, 2025 $.01 PV Com Stk 75.8K $16.55 Direct
holding ATRO Restricted Stock Unit 25.3K Nov 20, 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.