OEC's three largest insider shareholders as of September 29, 2026 are Corning F. Painter (Chief Executive Officer, 1.30Mn shares), Anthony Lynn Davis (Director, 325.16K shares), Jeffrey Glajch (Chief Financial Officer, 118.02K shares).
| # | Insider | Position | Direct | Indirect | Total | Share of Insiders | Last Filed |
|---|---|---|---|---|---|---|---|
| 1 | Corning F. Painter | Chief Executive Officer | 1,303,043 | 0 | 1,303,043 | 41.9% | 01 May, 2026 |
| 2 | Anthony Lynn Davis | Director | 5,250 | 325,164 | 330,414 | 10.6% | 13 Sep, 2023 |
| 3 | Dan F Smith | Director | 175,793 | 0 | 175,793 | 5.7% | 30 Jun, 2026 |
| 4 | Paul E Huck | Director | 163,293 | 0 | 163,293 | 5.3% | 30 Jun, 2026 |
| 5 | Kerry A Galvin | Director | 150,356 | 0 | 150,356 | 4.8% | 30 Jun, 2026 |
| 6 | Jeffrey Glajch | Chief Financial Officer | 118,022 | 0 | 118,022 | 3.8% | 07 May, 2025 |
| 7 | Carlos Quinones | Sr. Vp Global Operations | 112,710 | 0 | 112,710 | 3.6% | 01 May, 2026 |
| 8 | Mary A Lindsey | Director | 106,657 | 0 | 106,657 | 3.4% | 30 Jun, 2026 |
| 9 | Didier Miraton | Director | 103,293 | 0 | 103,293 | 3.3% | 30 Jun, 2026 |
| 10 | Jonathan A. Puckett | Chief Financial Officer | 90,726 | 0 | 90,726 | 2.9% | 01 May, 2026 |
| 11 | Yi Hyon Paik | Director | 86,657 | 0 | 86,657 | 2.8% | 30 Jun, 2026 |
| 12 | Pedro Riveros | Sr. Vp Global Rubber | 78,888 | 0 | 78,888 | 2.5% | 01 May, 2026 |
| 13 | Hans Dietrich Winkhaus | Director | 72,204 | 0 | 72,204 | 2.3% | 24 Jun, 2024 |
| 14 | Michel Wurth | Director | 67,507 | 0 | 67,507 | 2.2% | 30 Jun, 2025 |
| 15 | Sandra Niewiem | Sr. Vp Global Specialties | 51,467 | 0 | 51,467 | 1.7% | 01 May, 2026 |
| 16 | Lorin Crenshaw | Chief Financial Officer | 44,522 | 0 | 44,522 | 1.4% | 08 Oct, 2021 |
| 17 | Jacqueline Hoogerbrugge | Director | 32,085 | 0 | 32,085 | 1.0% | 30 Jun, 2026 |
| 18 | Robert G. Hrivnak | Chief Accounting Officer | 19,599 | 0 | 19,599 | 0.6% | 05 Apr, 2023 |
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 |
|---|---|---|---|---|---|---|---|---|
| 26 Jun, 2026 | Kerry A Galvin | Director | Acquired A | 19,150 | $0.00 | $0 | 84,753 | Direct |
| 26 Jun, 2026 | Mary A Lindsey | Director | Acquired A | 19,150 | $0.00 | $0 | 75,039 | Direct |
| 26 Jun, 2026 | Dan F Smith | Director | Acquired A | 19,150 | $0.00 | $0 | 110,857 | Direct |
| 26 Jun, 2026 | Didier Miraton | Director | Acquired A | 19,150 | $0.00 | $0 | 73,357 | Direct |
| 26 Jun, 2026 | Jacqueline Hoogerbrugge | Director | Acquired A | 19,150 | $0.00 | $0 | 32,085 | Direct |
| 26 Jun, 2026 | Paul E Huck | Director | Acquired A | 19,150 | $0.00 | $0 | 103,357 | Direct |
| 26 Jun, 2026 | Yi Hyon Paik | Director | Acquired A | 19,150 | $0.00 | $0 | 65,039 | Direct |
| 29 Apr, 2026 | Sandra Niewiem | Sr. Vp Global Specialties | Acquired A | 24,087 | $0.00 | $0 | 51,467 | Direct |
| 29 Apr, 2026 | Jonathan A. Puckett | Chief Financial Officer | Acquired A | 41,513 | $0.00 | $0 | 90,726 | Direct |
| 29 Apr, 2026 | Pedro Riveros | Sr. Vp Global Rubber | Acquired A | 24,898 | $0.00 | $0 | 78,888 | Direct |
| 29 Apr, 2026 | Carlos Quinones | Sr. Vp Global Operations | Acquired A | 23,018 | $0.00 | $0 | 112,710 | Direct |
| 29 Apr, 2026 | Corning F. Painter | Chief Executive Officer | Acquired A | 220,849 | $0.00 | $0 | 1,303,043 | Direct |
| 19 Feb, 2026 | Carlos Quinones | Sr. Vp Global Operations | Disposed F | 1,790 | $6.27 | $11.22K | 85,305 | Direct |
| 19 Feb, 2026 | Pedro Riveros | Sr. Vp Global Rubber | Disposed F | 2,721 | $6.27 | $17.06K | 49,984 | Direct |
| 19 Feb, 2026 | Corning F. Painter | Chief Executive Officer | Disposed F | 23,789 | $6.27 | $149.16K | 1,060,586 | Direct |
| 19 Feb, 2026 | Sandra Niewiem | Sr. Vp Global Specialties | Disposed F | 2,662 | $6.27 | $16.69K | 24,255 | Direct |
| 19 Feb, 2026 | Corning F. Painter | Chief Executive Officer | Acquired A | 83,515 | $0.00 | $0 | 1,114,101 | Direct |
| 19 Feb, 2026 | Carlos Quinones | Sr. Vp Global Operations | Acquired A | 6,516 | $0.00 | $0 | 91,821 | Direct |
| 19 Feb, 2026 | Pedro Riveros | Sr. Vp Global Rubber | Acquired A | 6,988 | $0.00 | $0 | 56,972 | Direct |
| 19 Feb, 2026 | Sandra Niewiem | Sr. Vp Global Specialties | Acquired A | 5,952 | $0.00 | $0 | 30,207 | Direct |