Comparable stake leader
BlackRock, Inc.
SEC ownership of DUCOMMUN INC /DE/
Top holders, 13D/G large-stake signals, insider positions, and transaction flow tied to CIK 0000030305.
Disclosed value leader
BlackRock, Inc.
Comparable rows
50/50
Latest evidence
28 May 2026
- Public ticker
- DCO on NYSE
- Parsed ownership sources
- 13F, 13D/G, and 3/4/5
- Largest SEC-reported holder
- BlackRock, Inc.
- Latest 13D/G holder
- BlackRock, Inc.
- Latest parsed ownership date
- 28 May 2026
- Issuer CIK
- 0000030305
- Issuer location
- Costa Mesa, CA
Ownership snapshot
CIK-linked ownership evidence from parsed SEC filings.
2 signals
Issuer
Names, identifiers, and filing context for this profile.
2 identity fields
Ownership snapshot
Top shareholders of DUCOMMUN INC /DE/ (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
28 May 2026
13F
13D/G
3/4/5
Lead comparable stake: 8.1%
13D/G row: BlackRock, Inc.
Showing 1-8 of 50 holder rows.
Quick read
BlackRock, Inc. leads the comparable SEC ownership view at 8.1%.
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.
Open SEC evidence
Opens BlackRock, Inc.'s linked filing trail.
Comparable ownership
Top 5
BlackRock, Inc.
8.1%
STATE STREET CORP
5.2%
DIMENSIONAL FUND ADVISORS LP
3.4%
GAMCO INVESTORS, INC. ET AL
3.2%
Stephen G. Oswald
2.6%
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
|
8.1%
from 13D/G
|
$215,845,206
1,769,223 shares
|
— | 31 Mar 2026 |
| STATE STREET CORP |
13D/G
13F
STATE STREET CORPORATION · Company
|
5.2%
|
$109,967,885
785,541 shares
|
$0 | 31 Mar 2026 |
| DIMENSIONAL FUND ADVISORS LP |
13D/G
13F
Company
|
3.4%
|
$62,484,374
512,167 shares
|
-$42,286,664 | 31 Mar 2026 |
| GAMCO INVESTORS, INC. ET AL |
13F
13D/G
Company · GAMCO Asset Management Inc.
|
3.2%
from 13D/G
|
$54,834,242
449,461 shares
|
— | 31 Mar 2026 |
| Stephen G. Oswald |
3/4/5
Chairman, President & CEO, Director
|
2.6%
|
$47,310,990
387,795 shares
|
— | 28 May 2026 |
| Jerry L. Redondo |
3/4/5
S.V.P., Elec. & Struc. Systems
|
0.41%
|
$9,575,568
62,034 shares
|
-$1,212,359 | 14 May 2026 |
| Richard A. Baldridge |
3/4/5
Director
|
0.13%
|
$2,629,683
20,100 shares
|
-$1,365,865 | 10 Mar 2026 |
| Shirley G. Drazba |
3/4/5
Director
|
0.12%
|
$2,213,080
18,140 shares
|
— | 27 May 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: -$6,122,744.
Buys
$0
Insiders: 0
Sells
$6,122,744
Insiders: 5
Net
-$6,122,744
Shares: -45,931
Window
Last 12 months
4 rolling buckets
Buy value
Sell value
Shares: 0
Shares: 45,931
| Window (months) | Buy shares | Sell shares | Buy value | Sell value | Net value |
|---|---|---|---|---|---|
| 0-3 | 0 | 27,628 | $0 | $3,813,364 | -$3,813,364 |
| 3-6 | 0 | 16,709 | $0 | $2,159,815 | -$2,159,815 |
| 6-9 | 0 | 1,594 | $0 | $149,565 | -$149,565 |
| 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 DUCOMMUN INC /DE/. Open a relationship link for the CIK-to-CIK filing trail.
Rows
18
Largest Forms 3/4/5 holder
Stephen G. Oswald
Net 12M change
-$6,122,744
Latest report
28 May 2026
| Name | Relationship | Holdings Value | Past Year Net Change | Change % | Valuation | Report Date |
|---|---|---|---|---|---|---|
| Stephen G. Oswald | Chairman, President & CEO, Director | $47,310,990 | Median | 28 May 2026 | ||
| Robert C. Ducommun | Director | $29,244,210 | Mixed | 05 Dec 2024 | ||
| Jerry L. Redondo | S.V.P., Elec. & Struc. Systems | $9,575,568 | -$1,212,359 | -11% | Filing P/S | 14 May 2026 |
| Rajiv A. Tata | V.P., G.C. & Corp. Secretary | $4,809,795 | -$233,740 | -4.6% | Filing P/S | 20 May 2026 |
| Suman B. Mookerji | Sr. V.P., C.F.O. | $3,736,505 | -$3,221,258 | -46% | Filing P/S | 20 May 2026 |
| Richard A. Baldridge | Director | $2,629,683 | -$1,365,865 | -34% | Filing P/S | 10 Mar 2026 |
| Dean M. Flatt | Director | $2,343,018 | Mixed | 14 May 2024 | ||
| Shirley G. Drazba | Director | $2,213,080 | Median | 27 May 2026 | ||
| Jay L. Haberland | Director | $1,763,520 | Mixed | 26 Apr 2023 | ||
| Rose F. Rogers | VP & Chief HR Officer | $1,723,401 | Mixed | 10 Sep 2021 | ||
| Laureen S. Gonzalez | V.P., Chro | $1,698,032 | -$89,522 | -5% | Filing P/S | 28 May 2026 |
| Sheila G. Kramer | Director | $1,427,400 | Median | 27 May 2026 | ||
| Christopher D. Wampler | VP, CFO, Controller, Treasurer | $1,374,040 | Mixed | 23 Feb 2023 | ||
| Samara A. Strycker | Director | $1,305,400 | Median | 27 May 2026 | ||
| David B. Carter | Director | $841,800 | Median | 27 May 2026 | ||
| Daniel G. Korte | Director | $525,942 | Median | 27 May 2026 | ||
| Daniel L. Boehle | Director | $525,942 | Median | 27 May 2026 | ||
| Mark A. Caylor | Director | $146,400 | Median | 27 May 2026 |
Recent insider transactions for DUCOMMUN INC /DE/
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 |
|---|---|---|---|---|---|---|---|---|---|---|
| Laureen S. Gonzalez | DCO | Common Stock | Sale | -5.01% | $89,522 | $151.99 | -589 | 11,172 | 28 May 2026 | Direct |
| Stephen G. Oswald | DCO | Common Stock | Gift | -0.52% | -2,034 | 387,795 | 28 May 2026 | Direct | ||
| Samara A. Strycker | DCO | Common Stock | Award | 12.6% | 1,200 | 10,700 | 27 May 2026 | Direct | ||
| Sheila G. Kramer | DCO | Common Stock | Award | 11.4% | 1,200 | 11,700 | 27 May 2026 | Direct | ||
| Daniel G. Korte | DCO | Common Stock | Award | 38.6% | 1,200 | 4,311 | 27 May 2026 | Held in Trust FBO Family | ||
| Shirley G. Drazba | DCO | Common Stock | Award | 7.08% | 1,200 | 18,140 | 27 May 2026 | Direct | ||
| Mark A. Caylor | DCO | Common Stock | Award | 1,200 | 1,200 | 27 May 2026 | Direct | |||
| David B. Carter | DCO | Common Stock | Award | 21% | 1,200 | 6,900 | 27 May 2026 | Direct | ||
| Daniel L. Boehle | DCO | Common Stock | Award | 38.6% | 1,200 | 4,311 | 27 May 2026 | Direct | ||
| Suman B. Mookerji | DCO | Common Stock | Sale | -5.55% | $219,530 | $145.00 | -1,514 | 25,769 | 20 May 2026 | Direct |
| Stephen G. Oswald | DCO | Common Stock | Disposed to Issuer | -4.02% | -16,314 | 389,829 | 20 May 2026 | Direct | ||
| Stephen G. Oswald | DCO | Common Stock | Gift | -0.9% | -3,700 | 406,143 | 20 May 2026 | Direct | ||
| Rajiv A. Tata | DCO | Common Stock | Sale | -4.63% | $233,740 | $145.00 | -1,612 | 33,171 | 20 May 2026 | Direct |
| Suman B. Mookerji | DCO | Common Stock | Tax liability | -14.9% | -4,783 | 27,283 | 15 May 2026 | Direct | ||
| Suman B. Mookerji | DCO | Common Stock | Options Exercise | 30.5% | 7,500 | 32,066 | 15 May 2026 | Direct | ||
| Suman B. Mookerji | DCO | Option - Right to Buy | Options Exercise | 7,500 | 0 | 15 May 2026 | Direct | |||
| Suman B. Mookerji | DCO | Common Stock | Disposed to Issuer | -4.88% | -1,259 | 24,566 | 14 May 2026 | Direct | ||
| Suman B. Mookerji | DCO | Common Stock | Tax liability | -4.58% | -1,239 | 25,825 | 14 May 2026 | Direct | ||
| Rajiv A. Tata | DCO | Common Stock | Disposed to Issuer | -1.58% | -558 | 34,783 | 14 May 2026 | Direct | ||
| Rajiv A. Tata | DCO | Common Stock | Tax liability | -1.53% | -549 | 35,341 | 14 May 2026 | Direct | ||
| Laureen S. Gonzalez | DCO | Common Stock | Disposed to Issuer | -2.7% | -326 | 11,761 | 14 May 2026 | Direct | ||
| Laureen S. Gonzalez | DCO | Common Stock | Tax liability | -2.59% | -321 | 12,087 | 14 May 2026 | Direct | ||
| Jerry L. Redondo | DCO | Common Stock | Sale | -8.39% | $877,074 | $154.36 | -5,682 | 62,034 | 14 May 2026 | Direct |
| Jerry L. Redondo | DCO | Common Stock | Disposed to Issuer | -1.33% | -912 | 67,716 | 14 May 2026 | Direct | ||
| Jerry L. Redondo | DCO | Common Stock | Tax liability | -1.29% | -898 | 68,628 | 14 May 2026 | Direct | ||
| Stephen G. Oswald | DCO | Common Stock | Disposed to Issuer | -0.54% | -2,221 | 409,843 | 14 May 2026 | Direct | ||
| Stephen G. Oswald | DCO | Common Stock | Tax liability | -0.53% | -2,185 | 412,064 | 14 May 2026 | Direct | ||
| Rajiv A. Tata | DCO | Common Stock | Disposed to Issuer | -1.71% | -625 | 35,890 | 08 May 2026 | Direct | ||
| Rajiv A. Tata | DCO | Common Stock | Tax liability | -1.66% | -616 | 36,515 | 08 May 2026 | Direct | ||
| Laureen S. Gonzalez | DCO | Common Stock | Disposed to Issuer | -2.49% | -317 | 12,408 | 08 May 2026 | Direct | ||
| Laureen S. Gonzalez | DCO | Common Stock | Tax liability | -2.39% | -312 | 12,725 | 08 May 2026 | Direct | ||
| Jerry L. Redondo | DCO | Common Stock | Disposed to Issuer | -1.08% | -759 | 69,526 | 08 May 2026 | Direct | ||
| Jerry L. Redondo | DCO | Common Stock | Tax liability | -1.05% | -748 | 70,285 | 08 May 2026 | Direct | ||
| Suman B. Mookerji | DCO | Common Stock | Disposed to Issuer | -4.16% | -1,174 | 27,064 | 08 May 2026 | Direct | ||
| Suman B. Mookerji | DCO | Common Stock | Tax liability | -3.93% | -1,155 | 28,238 | 08 May 2026 | Direct | ||
| Stephen G. Oswald | DCO | Common Stock | Disposed to Issuer | -0.62% | -2,589 | 414,249 | 08 May 2026 | Direct | ||
| Stephen G. Oswald | DCO | Common Stock | Tax liability | -0.61% | -2,546 | 416,838 | 08 May 2026 | Direct | ||
| Richard A. Baldridge | DCO | Common Stock | Sale | -34.2% | $1,365,865 | $130.83 | -10,440 | 20,100 | 10 Mar 2026 | Direct |
| Suman B. Mookerji | DCO | Common Stock | Sale | -21% | $1,027,633 | $131.90 | -7,791 | 29,393 | 10 Mar 2026 | Direct |
| Rajiv A. Tata | DCO | Common Stock | Options Exercise | 34.5% | 10,173 | 39,622 | 05 Mar 2026 | Direct | ||
| Rajiv A. Tata | DCO | Common Stock | Tax liability | -18% | -7,439 | 33,782 | 05 Mar 2026 | Direct | ||
| Rajiv A. Tata | DCO | Option - Right to Purchase | Options Exercise | 37.7% | 10,173 | 37,131 | 05 Mar 2026 | Direct | ||
| Laureen S. Gonzalez | DCO | Common Stock | Tax liability | -2.69% | -360 | 13,037 | 05 Mar 2026 | Direct | ||
| Jerry L. Redondo | DCO | Common Stock | Tax liability | -1.37% | -986 | 71,033 | 05 Mar 2026 | Direct | ||
| Suman B. Mookerji | DCO | Common Stock | Options Exercise | 9.33% | 4,700 | 55,079 | 05 Mar 2026 | Direct | ||
| Suman B. Mookerji | DCO | Common Stock | Tax liability | -8.28% | -4,547 | 50,379 | 05 Mar 2026 | Direct | ||
| Suman B. Mookerji | DCO | Option - Right to Purchase | Options Exercise | 9.96% | 4,700 | 51,893 | 05 Mar 2026 | Direct | ||
| Stephen G. Oswald | DCO | Common Stock | Tax liability | -0.57% | -2,409 | 419,384 | 05 Mar 2026 | Direct | ||
| Rajiv A. Tata | DCO | Common Stock | Tax liability | -11.1% | -4,097 | 32,908 | 04 Mar 2026 | Direct | ||
| Rajiv A. Tata | DCO | Common Stock | Award | 32.7% | 9,111 | 37,005 | 04 Mar 2026 | Direct |
* marks a reported price that did not pass the local price check.