Comparable stake leader
BlackRock, Inc.
SEC ownership of ASTRONICS CORP
Top holders, 13D/G large-stake signals, insider positions, and transaction flow tied to CIK 0000008063.
Disclosed value leader
BlackRock, Inc.
Comparable rows
50/50
Latest evidence
31 Mar 2026
- Symbol
- ATRO on Nasdaq, ATROB on OTC
- Ownership evidence mix
- 13F and 13D/G
- Largest current holder
- BlackRock, Inc.
- Latest large-stake holder
- BlackRock, Inc.
- Latest evidence date
- 31 Mar 2026
- CIK
- 0000008063
- Location
- East Aurora, NY
Ownership snapshot
2 signals
Issuer identity
2 identity fields
Ownership snapshot
Top shareholders of ASTRONICS CORP (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.
Comparable stake leader
BlackRock, Inc.
Disclosed value leader
BlackRock, Inc.
Comparable rows
50/50
Latest evidence
31 Mar 2026
13F
13D/G
Lead comparable stake: 8.7%
13D/G row: BlackRock, Inc.
Showing 1-8 of 50 holder rows.
Quick read
BlackRock, Inc. leads the comparable SEC ownership view at 8.7%.
50 of 50 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.
Comparable ownership
Top 5
BlackRock, Inc.
8.7%
STATE STREET CORP
7.4%
AMERICAN CENTURY INVESTMENT MANAG...
5.6%
VANGUARD CAPITAL MANAGEMENT LLC
5.1%
NEXT CENTURY GROWTH INVESTORS LLC
4.8%
Ownership % is shown only when SEC disclosures are safely comparable across share classes.
Detailed SEC evidence table Showing 1-8 of 50 holder rows
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| BlackRock, Inc. |
13F
13D/G
Company
|
8.7%
from 13D/G
|
$188,539,610
2,825,410 shares
|
— | 31 Mar 2026 |
| STATE STREET CORP |
13D/G
13F
STATE STREET CORPORATION · Company
|
7.4%
|
$170,338,089
2,349,815 shares
|
+$37,523,434 | 31 Mar 2026 |
| AMERICAN CENTURY INVESTMENT MANAGEMENT INC |
13D/G
|
5.6%
|
$95,692,106
1,764,235 shares
|
$0 | 31 Dec 2025 |
| VANGUARD CAPITAL MANAGEMENT LLC |
13D/G
13F
Vanguard Capital Management · Company
|
5.1%
|
$107,917,224
1,617,222 shares
|
$0 | 31 Mar 2026 |
| NEXT CENTURY GROWTH INVESTORS LLC |
13F
13D/G
Company
|
4.8%
from 13D/G
|
$52,470,933
786,317 shares
|
— | 31 Mar 2026 |
| Capital International Investors |
13D/G
13F
Company
|
4%
|
$93,435,768
1,288,947 shares
|
-$40,662,468 | 31 Mar 2026 |
| ACK Asset Management LLC |
13D/G
|
4%
|
$56,862,900
1,230,000 shares
|
$0 | 30 Sep 2025 |
| GOLDMAN SACHS GROUP INC |
13F
13D/G
Company · THE GOLDMAN SACHS GROUP, INC.
|
0.7%
from 13D/G
|
$30,365,754
455,054 shares
|
— | 31 Mar 2026 |
How to read this table
Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
Forms 3/4/5 flow
Insider trading overview
Net insider flow leans to selling over the last 12 months. Net value: -$561,315.
Buys
$0
Insiders: 0
Sells
$561,315
Insiders: 1
Net
-$561,315
Shares: -10,863
Window
Last 12 months
4 rolling buckets
Buy value
Sell value
Shares: 0
Shares: 10,863
| Window (months) | Buy shares | Sell shares | Buy value | Sell value | Net value |
|---|---|---|---|---|---|
| 0-3 | 0 | 0 | $0 | $0 | $0 |
| 3-6 | 0 | 0 | $0 | $0 | $0 |
| 6-9 | 0 | 10,863 | $0 | $561,315 | -$561,315 |
| 9-12 | 0 | 0 | $0 | $0 | $0 |
Reporting owners
Insider holders from Forms 3/4/5
Showing 1-18 of 18 reporting-owner rows connected to ASTRONICS CORP. Open a relationship link for the CIK-to-CIK filing trail.
Rows
18
Largest current holder
Peter J. Gundermann
Net 12M change
-$561,315
Latest report
03 Mar 2026
| Name | Relationship | Holdings Value | Past Year Net Change | Change % | Valuation | Report Date |
|---|---|---|---|---|---|---|
| Peter J. Gundermann | PRESIDENT/CEO, Director | $50,298,088 | Mixed | 03 Mar 2026 | ||
| Robert S. Keane | Director | $15,670,615 | Mixed | 19 Feb 2026 | ||
| BRADY ROBERT T | Director | $13,768,429 | Mixed | 26 Feb 2026 | ||
| Mark Peabody | Executive VP & Pres-Aerospace | $12,501,942 | Mixed | 03 Mar 2026 | ||
| James S. Kramer | VP Luminescent Systems, Inc. | $11,913,272 | Mixed | 30 Sep 2024 | ||
| David C. Burney | Vp Finance, Cfo | $6,998,469 | Mixed | 30 Sep 2024 | ||
| James Mulato | Pres Astronics Test Systems | $1,572,317 | -$561,315 | -26% | Mixed | 03 Mar 2026 |
| Nancy L. Hedges | Principal Accounting Officer | $1,569,674 | Mixed | 03 Mar 2026 | ||
| Raymond W. Boushie | Director | $775,520 | Mixed | 23 Feb 2023 | ||
| Neil Y. Kim | Director | $753,165 | Mixed | 19 Feb 2026 | ||
| Warren C. Johnson | Director | $660,941 | Mixed | 19 Feb 2026 | ||
| Jeffry D. Frisby | Director | $651,491 | Mixed | 19 Feb 2026 | ||
| Michael C. Kuehn | Executive Vice President | $575,273 | Mixed | 10 May 2024 | ||
| Mark J. Moran | Director | $574,061 | Mixed | 19 Feb 2026 | ||
| Linda O'Brien | Director | $284,027 | Mixed | 19 Feb 2026 | ||
| Tonit M. Calaway | Director | $243,815 | Mixed | 31 May 2022 | ||
| Fay West | Director | $81,743 | Mixed | 19 Feb 2026 | ||
| Julie M. Davis | Secretary | $28,477 | Mixed | 03 Mar 2026 |
Recent insider transactions for ASTRONICS CORP
Showing up to 300 recent insider transactions from the last 12 months.
| Insider | Symbol | Class | Transaction | % | SEC-reported value | SEC-reported price | Shares | Shares owned | Date | Ownership |
|---|---|---|---|---|---|---|---|---|---|---|
| Julie M. Davis | ATRO | $.01 PV Com Stk | Tax liability | -16.5% | -1,472 | 7,466 | 03 Mar 2026 | Direct | ||
| Julie M. Davis | ATRO | $.01 PV Com Stk | Options Exercise | 50.5% | 3,000 | 8,938 | 03 Mar 2026 | Direct | ||
| Julie M. Davis | ATRO | Restricted Stock Unit | Options Exercise | -100% | -3,000 | 0 | 03 Mar 2026 | Direct | ||
| Mark Peabody | ATRO | $.01 PV Com Stk | Tax liability | -4.06% | -2,642 | 62,383 | 03 Mar 2026 | Direct | ||
| Mark Peabody | ATRO | $.01 PV Com Stk | Options Exercise | 20% | 10,850 | 65,025 | 03 Mar 2026 | Direct | ||
| Mark Peabody | ATRO | Restricted Stock Unit | Options Exercise | -100% | -10,850 | 0 | 03 Mar 2026 | Direct | ||
| Nancy L. Hedges | ATRO | $.01 PV Com Stk | Tax liability | -5.38% | -1,821 | 32,049 | 03 Mar 2026 | Direct | ||
| Nancy L. Hedges | ATRO | $.01 PV Com Stk | Options Exercise | 17.5% | 5,050 | 33,870 | 03 Mar 2026 | Direct | ||
| Nancy L. Hedges | ATRO | Restricted Stock Unit | Options Exercise | -100% | -5,050 | 0 | 03 Mar 2026 | Direct | ||
| James Mulato | ATRO | $.01 PV Com Stk | Tax liability | -7.26% | -2,801 | 35,777 | 03 Mar 2026 | Direct | ||
| James Mulato | ATRO | $.01 PV Com Stk | Options Exercise | 42.5% | 11,500 | 38,578 | 03 Mar 2026 | Direct | ||
| James Mulato | ATRO | Restricted Stock Unit | Options Exercise | -100% | -11,500 | 0 | 03 Mar 2026 | Direct | ||
| Peter J. Gundermann | ATRO | $.01 PV Com Stk | Tax liability | -3.58% | -3,489 | 93,968 | 03 Mar 2026 | Direct | ||
| Peter J. Gundermann | ATRO | $.01 PV Com Stk | Options Exercise | 16.2% | 13,550 | 97,457 | 03 Mar 2026 | Direct | ||
| Peter J. Gundermann | ATRO | Restricted Stock Unit | Options Exercise | -100% | -13,550 | 0 | 03 Mar 2026 | Direct | ||
| Brady Robert T | ATRO | $.01 PV CL B STK | Options Exercise | 0.74% | 1,290 | 176,366 | 26 Feb 2026 | Direct | ||
| Brady Robert T | ATRO | $.01 PV Com Stk | Tax liability | -1.7% | -1,539 | 89,063 | 26 Feb 2026 | Direct | ||
| Brady Robert T | ATRO | $.01 PV Com Stk | Options Exercise | 4.62% | 4,000 | 90,602 | 26 Feb 2026 | Direct | ||
| Brady Robert T | ATRO | Option | Options Exercise | -100% | -5,290 | 0 | 26 Feb 2026 | Direct | ||
| Peter J. Gundermann | ATRO | Restricted Stock Unit | Award | 12,150 | 12,150 | 19 Feb 2026 | Direct | |||
| Brady Robert T | ATRO | $.01 PV Com Stk | Award | 1.8% | 1,533 | 86,602 | 19 Feb 2026 | Direct | ||
| Neil Y. Kim | ATRO | $.01 PV Com Stk | Award | 3.61% | 1,533 | 44,056 | 19 Feb 2026 | Direct | ||
| Robert Sprague Keane | ATRO | $.01 PV Com Stk | Award | 12.4% | 1,533 | 13,934 | 19 Feb 2026 | Direct | ||
| Warren C. Johnson | ATRO | $.01 PV Com Stk | Award | 3.18% | 1,533 | 49,756 | 19 Feb 2026 | Direct | ||
| Linda O'Brien | ATRO | $.01 PV Com Stk | Award | 7.73% | 1,533 | 21,372 | 19 Feb 2026 | Direct | ||
| Mark Peabody | ATRO | Restricted Stock Unit | Award | 7,675 | 7,675 | 19 Feb 2026 | Direct | |||
| Nancy L. Hedges | ATRO | Restricted Stock Unit | Award | 12,150 | 12,150 | 19 Feb 2026 | Direct | |||
| Fay West | ATRO | $.01 PV Com Stk | Award | 25.3% | 1,533 | 7,588 | 19 Feb 2026 | Direct | ||
| Jeffry D. Frisby | ATRO | $.01 PV Com Stk | Award | 3.37% | 1,533 | 47,056 | 19 Feb 2026 | Direct | ||
| Mark J. Moran | ATRO | $.01 PV Com Stk | Award | 3.61% | 1,533 | 44,056 | 19 Feb 2026 | Direct | ||
| James Mulato | ATRO | Restricted Stock Unit | Award | 7,675 | 7,675 | 19 Feb 2026 | Direct | |||
| Mark Peabody | ATRO | $.01 PV CL B STK | Gift | -1.08% | -2,000 | 183,445 | 09 Feb 2026 | Direct | ||
| Mark Peabody | ATRO | $.01 PV Com Stk | Gift | -0.91% | -500 | 54,175 | 09 Feb 2026 | Direct | ||
| Jeffry D. Frisby | ATRO | $.01 PV Com Stk | Gift | -1.09% | -500 | 45,523 | 09 Dec 2025 | Direct | ||
| Jeffry D. Frisby | ATRO | $.01 PV Com Stk | Gift | -1.07% | -500 | 46,023 | 04 Dec 2025 | Direct | ||
| Peter J. Gundermann | ATRO | Option | Award | 29,750 | 29,750 | 04 Dec 2025 | Direct | |||
| James Mulato | ATRO | $.01 PV Com Stk | Sale | -26.4% | $518,238 | $53.24 | -9,734 | 27,078 | 01 Dec 2025 | Direct |
| Jeffry D. Frisby | ATRO | $.01 PV Com Stk | Gift | -2.1% | -1,000 | 46,523 | 01 Dec 2025 | Direct | ||
| Mark Peabody | ATRO | $.01 PV Com Stk | Gift | -1.17% | -650 | 54,675 | 26 Nov 2025 | Direct | ||
| Peter J. Gundermann | ATRO | $.01 PV CL B STK | Options Exercise | 0.59% | 4,418 | 747,911 | 20 Nov 2025 | Direct | ||
| Peter J. Gundermann | ATRO | $.01 PV Com Stk | Tax liability | -12.2% | -11,707 | 83,907 | 20 Nov 2025 | Direct | ||
| Peter J. Gundermann | ATRO | $.01 PV Com Stk | Options Exercise | 16.7% | 13,700 | 95,614 | 20 Nov 2025 | Direct | ||
| Peter J. Gundermann | ATRO | Option | Options Exercise | -100% | -18,118 | 0 | 20 Nov 2025 | Direct | ||
| Peter J. Gundermann | ATRO | $.01 PV CL B STK | Options Exercise | 0.59% | 4,418 | 747,911 | 20 Nov 2025 | Direct | ||
| Peter J. Gundermann | ATRO | $.01 PV Com Stk | Tax liability | -12.2% | -11,707 | 83,907 | 20 Nov 2025 | Direct | ||
| Peter J. Gundermann | ATRO | $.01 PV Com Stk | Options Exercise | 16.7% | 13,700 | 95,614 | 20 Nov 2025 | Direct | ||
| Peter J. Gundermann | ATRO | Option | Options Exercise | -100% | -18,118 | 0 | 20 Nov 2025 | Direct | ||
| Mark Peabody | ATRO | $.01 PV CL B STK | Options Exercise | 0.79% | 1,451 | 185,445 | 19 Nov 2025 | Direct | ||
| Mark Peabody | ATRO | $.01 PV Com Stk | Options Exercise | 8.85% | 4,500 | 55,325 | 19 Nov 2025 | Direct | ||
| Mark Peabody | ATRO | Option | Options Exercise | -100% | -5,951 | 0 | 19 Nov 2025 | Direct |
* marks a reported price that did not pass the local price check.