FORM 4 [ ] Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).         
UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES
                                                                                  
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Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940
                      
1. Name and Address of Reporting Person * GUNDERMANN PETER J 2. Issuer Name and Ticker or Trading Symbol ASTRONICS CORP [ ATRO ] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable)__X__ Director                    _____ 10% Owner
__X__ Officer (give title below)    _____ Other (specify below)
PRESIDENT/CEO
(Last)         (First)         (Middle)
130 COMMERCE WAY
3. Date of Earliest Transaction (MM/DD/YYYY)
3/17/2021
(Street)
EAST AURORA, NY 14052
(City)       (State)       (Zip)
4. If Amendment, Date Original Filed (MM/DD/YYYY)
 
6. Individual or Joint/Group Filing (Check Applicable Line) _X _ Form filed by One Reporting Person
___ Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1.Title of Security
(Instr. 3)
2. Trans. Date 2A. Deemed Execution Date, if any 3. Trans. Code
(Instr. 8)
4. Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4 and 5)
5. Amount of Securities Beneficially Owned Following Reported Transaction(s)
(Instr. 3 and 4)
6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4)
Code V Amount (A) or (D) Price
$.01 PV COMMON STOCK  3/17/2021    M    1805  A $0.00  23926  D   
$.01 PV COMMON STOCK  3/17/2021    F(1)    563  D $18.65  23363  D   
$.01 PV CLASS B STOCK  3/17/2021    M    270  A $0.00  704990  D   

Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivate Security
(Instr. 3)
2. Conversion or Exercise Price of Derivative Security 3. Trans. Date 3A. Deemed Execution Date, if any 4. Trans. Code
(Instr. 8)
5. Number of Derivative Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4 and 5)
6. Date Exercisable and Expiration Date 7. Title and Amount of Securities Underlying Derivative Security
(Instr. 3 and 4)
8. Price of Derivative Security
(Instr. 5)
9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4)
Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares
OPTION  $13.59                  12/1/2012  12/1/2021  $.01 PV COM STK  10700    10700  D   
OPTION  $13.59                  12/1/2012  12/1/2021  $.01 PV CL B STK  16249    16249  D   
OPTION  $9.20                  11/29/2013  11/29/2022  $.01 PV COM STK  18700    18700  D   
OPTION  $9.20                  11/29/2013  11/29/2022  $.01 PV CL B STK  22254    22254  D   
OPTION  $28.45                  12/11/2014  12/11/2023  $.01 PV COM STK  8300    8300  D   
OPTION  $28.45                  12/11/2014  12/11/2023  $.01 PV CL B STK  6848    6848  D   
OPTION  $30.83                  12/11/2015  12/11/2024  $.01 PV COM STK  10100    10100  D   
OPTION  $30.83                  12/11/2015  12/11/2024  $.01 PV CL B STK  5261    5261  D   
OPTION  $27.72                  12/3/2016  12/3/2025  $.01 PV COM STK  13700    13700  D   
Option  $27.72                  12/3/2016  12/3/2025  $.01 PV CL B STK  4418    4418  D   
Option  $31.76                  12/14/2017  12/14/2026  $.01 PV COM STK  14460    14460  D   
Option  $31.76                  12/14/2017  12/14/2026  $.01 PV CL B STK  2169    2169  D   
Option  $35.61                  12/12/2018  12/12/2027  $.01 PV COM STK  26300    26300  D   
Option  $35.61                  12/12/2018  12/12/2027  $.01 PV CL B STK  3945    3945  D   
Restricted Stock Unit   (2) 3/17/2021    M        1805    (3)  (3) $.01 PV COM STK  1805  $0.00  0  D   
Restricted Stock Unit   (4) 3/17/2021    M        270    (3)  (3) $.01 PV CL B STK  270  $0.00  0  D   
Option  $31.57                  12/13/2019  12/13/2028  $.01 PV COM STK  34790    34790  D   
Restricted Stock Unit   (2)                  (5)  (5) $.01 PV COM STK  1832    1832  D   
Option  $30.04                  12/9/2020  12/9/2029  $.01 PV COM STK  61200    61200  D   
Restricted Stock Unit   (2)                  (6)  (6) $.01 PV COM STK  10175    10175  D   
Option  $14.45                  1/22/2022  1/22/2031  $.01 PV COM STK  98900    98900  D   
Restricted Stock Unit   (2)                  (7)  (7) $.01 PV COM STK  1052    1052  D   
Restricted Stock Unit   (2)                  (8)  (8) $.01 PV COM STK  12275    12275  D   

Explanation of Responses:
(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 of January 1, 2018- December 31, 2020. The "target" number of restricted stock units is reported. Between 75% and 115% of the target number of units may vest on December 31, 2020, with the vesting percentage determined based on actual performance.
(4)  Each restricted stock unit represents the right to receive, at settlement, one share of Class B stock.
(5)  Vesting of these restricted stock units depends on Astronics Corp.'s average annual adjusted EBITDA for the period January 1, 2019-December 31, 2021. The "target" number of restricted stock units is reported. Between 75% and 115% of the target number of units may vest on December 31, 2021, 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 January1, 2020- December 31, 2022. The "target" number of restricted stock units is reported. Between 75% and 115% of the target number of units may vest on December 31, 2022, with the vesting percentage determined based on actual performance.
(7)  These restricted stock units vest ratably on each anniversary of the grant date over three years.
(8)  Vesting of these restricted stock units depends on Astronics Corp.'s average annual adjusted EBITDA for the period January1, 2021- December 31, 2023. The "target" number of restricted stock units is reported. Between 75% and 115% of the target number of units may vest on December 31, 2022, with the vesting percentage determined based on actual performance.

Reporting Owners
Reporting Owner Name / Address
Relationships
Director 10% Owner Officer Other
GUNDERMANN PETER J
130 COMMERCE WAY
EAST AURORA, NY 14052
X
PRESIDENT/CEO

Signatures
/S/JULIE DAVIS, AS POWER OF ATTORNEY FOR PETER J. GUNDERMANN 3/19/2021
**Signature of Reporting Person Date