As of September 29, 2026, Ducommun's top three insider holders are Robert C Ducommun (Director, 409.90K shares), Stephen G Oswald (Chairman, President Ceo, 383.86K shares), Jerry L Redondo (S.V.P., Elec. Struc. Systems, 62.03K shares).
| # | Insider | Position | Direct | Indirect | Total | Share of Insiders | Last Filed |
|---|---|---|---|---|---|---|---|
| 1 | Robert C Ducommun | Director | 409,900 | 0 | 409,900 | 37.0% | 06 Dec, 2024 |
| 2 | Stephen G Oswald | Chairman, President Ceo | 383,864 | 0 | 383,864 | 34.6% | 19 Aug, 2026 |
| 3 | Jerry L Redondo | S.V.P., Elec. Struc. Systems | 62,034 | 0 | 62,034 | 5.6% | 15 May, 2026 |
| 4 | Dean M Flatt | Director | 41,440 | 0 | 41,440 | 3.7% | 15 May, 2024 |
| 5 | Jay L Haberland | Director | 35,562 | 0 | 35,562 | 3.2% | 28 Apr, 2023 |
| 6 | Rajiv A. Tata | V.P., G.C. Corp. Secretary | 33,171 | 0 | 33,171 | 3.0% | 20 May, 2026 |
| 7 | Christopher D. Wampler | Vp, Cfo, Controller, Treasurer | 27,708 | 0 | 27,708 | 2.5% | 24 Feb, 2023 |
| 8 | Suman B. Mookerji | Sr. V.P., C.F.O. | 25,769 | 0 | 25,769 | 2.3% | 22 May, 2026 |
| 9 | Richard A Baldridge | Director | 20,100 | 0 | 20,100 | 1.8% | 12 Mar, 2026 |
| 10 | Shirley Drazba | Director | 18,140 | 0 | 18,140 | 1.6% | 29 May, 2026 |
| 11 | Sheila G. Kramer | Director | 11,700 | 0 | 11,700 | 1.1% | 29 May, 2026 |
| 12 | Laureen S. Gonzalez | V.P., Chro | 11,172 | 0 | 11,172 | 1.0% | 29 May, 2026 |
| 13 | Samara A Strycker | Director | 10,700 | 0 | 10,700 | 1.0% | 29 May, 2026 |
| 14 | David B. Carter | Director | 6,900 | 0 | 6,900 | 0.6% | 29 May, 2026 |
| 15 | Daniel L. Boehle | Director | 4,311 | 0 | 4,311 | 0.4% | 29 May, 2026 |
| 16 | Daniel G. Korte | Director | 0 | 4,311 | 4,311 | 0.4% | 29 May, 2026 |
| 17 | Mark A Caylor | Director | 1,200 | 0 | 1,200 | 0.1% | 29 May, 2026 |
Each row is that insider’s most recently reported position, from Form 4 filings over the last 60 months — which is why this total does not tie to the quarterly series above, where a quarter counts only the insiders who filed in it. Shares held through a fund or institutional portfolio are counted on the institutional ownership page instead.
| Date | Insider | Position | Transaction | Shares | Price | Value | Shares Held After | Ownership |
|---|---|---|---|---|---|---|---|---|
| 17 Aug, 2026 | Stephen G Oswald | Chairman, President Ceo | Acquired M | 10,000 | $32.90 | $329.00K | 392,475 | Direct |
| 17 Aug, 2026 | Stephen G Oswald | Chairman, President Ceo | Disposed F | 6,111 | $206.98 | $1.26Mn | 386,364 | Direct |
| 18 Aug, 2026 | Stephen G Oswald | Chairman, President Ceo | Disposed S | 2,500 | $203.95 | $509.88K | 383,864 | Direct |
| 17 Aug, 2026 | Stephen G Oswald | Chairman, President Ceo | Disposed M | 10,000 | $0.00 | $0 | 7,500 | Direct |
| 11 Aug, 2026 | Stephen G Oswald | Chairman, President Ceo | Acquired M | 15,000 | $32.90 | $493.50K | 400,875 | Direct |
| 11 Aug, 2026 | Stephen G Oswald | Chairman, President Ceo | Acquired M | 15,000 | $32.90 | $493.50K | 400,875 | Direct |
| 11 Aug, 2026 | Stephen G Oswald | Chairman, President Ceo | Disposed F | 9,234 | $194.85 | $1.80Mn | 391,641 | Direct |
| 11 Aug, 2026 | Stephen G Oswald | Chairman, President Ceo | Disposed F | 9,234 | $194.85 | $1.80Mn | 391,641 | Direct |
| 12 Aug, 2026 | Stephen G Oswald | Chairman, President Ceo | Disposed S | 5,766 | $201.15 | $1.16Mn | 385,875 | Direct |
| 12 Aug, 2026 | Stephen G Oswald | Chairman, President Ceo | Disposed S | 5,766 | $201.15 | $1.16Mn | 385,875 | Direct |
| 12 Aug, 2026 | Stephen G Oswald | Chairman, President Ceo | Disposed G | 3,400 | $0.00 | $0 | 382,475 | Direct |
| 12 Aug, 2026 | Stephen G Oswald | Chairman, President Ceo | Disposed G | 2,244 | $0.00 | $0 | 383,631 | Direct |
| 11 Aug, 2026 | Stephen G Oswald | Chairman, President Ceo | Disposed M | 15,000 | $0.00 | $0 | 17,500 | Direct |
| 11 Aug, 2026 | Stephen G Oswald | Chairman, President Ceo | Disposed M | 15,000 | $0.00 | $0 | 17,500 | Direct |
| 11 Jun, 2026 | Stephen G Oswald | Chairman, President Ceo | Disposed G | 1,920 | $0.00 | $0 | 385,875 | Direct |
| 27 May, 2026 | Samara A Strycker | Director | Acquired A | 1,200 | $0.00 | $0 | 10,700 | Direct |
| 27 May, 2026 | Sheila G. Kramer | Director | Acquired A | 1,200 | $0.00 | $0 | 11,700 | Direct |
| 27 May, 2026 | David B. Carter | Director | Acquired A | 1,200 | $0.00 | $0 | 6,900 | Direct |
| 27 May, 2026 | Mark A Caylor | Director | Acquired A | 1,200 | $0.00 | $0 | 1,200 | Direct |
| 27 May, 2026 | Daniel G. Korte | Director | Acquired A | 1,200 | $0.00 | $0 | 4,311 | Indirect |