ASTRONICS CORP

ATRO

Form 4 • Statement of Changes in Beneficial Ownership

SEC Accession Number: 0001628280-26-015224
Filing date: Mar 5, 2026
Earliest execution date: Mar 3, 2026
Reporting Owners: GUNDERMANN PETER J (CEO)

Summary

Type

Sell

Net shares

-3,489

% of shares

-0.41%

Amount (USD)

$283,830

Insider confidence score

45.0 out of 100

Positive

  • Tax withholding obligation

Negative

  • Large sell amount ($250K+)

Stock transactions

Transaction 1

Security

$.01 PV Com Stk

Action

Exercise

Date

2026-03-03

Code

M

Net shares

+13,550.0

Price per Share

$81.35

Amount (USD)

$1,102,292.50

Acquired/Disposed

Acquired

Shares Owned Before

83,906.608

Shares Owned After

97,456.608

Transaction 2

Security

$.01 PV Com Stk

Action

Tax_withhold

Date

2026-03-03

Code

F

Net shares

-3,489.0

Price per Share

$81.35

Amount (USD)

$283,830.15

Acquired/Disposed

Disposed

Shares Owned Before

97,456.608

Shares Owned After

93,967.608

Derivative Transactions

Transaction 1

Security

Restricted Stock Unit

Action

Exercise

Date

2026-03-03

Code

M

Net shares

-13,550.0

Acquired/Disposed

Disposed

Shares Owned Before

13,550.0

Shares Owned After

0.0

Filing's footnotes

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

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

3. 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.

4. 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.

5. 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.

6. 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 thetarget number of restricted stock units which vested on February 23, 2026.

This page is for informational purposes only. While we strive for accuracy, the summary may contain inaccuracies or omissions. Please refer to the official SEC filing for authoritative information. Open the SEC filing.