OTTR's three largest insider shareholders as of September 17, 2026 are Charles S Macfarlane (President Ceo, 251.60K shares), John D Erickson (Director, 140.99K shares), Kevin G Moug (Cfo Sr Vp, 119.40K shares).
| # | Insider | Position | Direct | Indirect | Total | Share of Insiders | Last Filed |
|---|---|---|---|---|---|---|---|
| 1 | Charles S Macfarlane | President Ceo | 251,597 | 0 | 251,597 | 33.2% | 12 Feb, 2026 |
| 2 | Kevin G Moug | Cfo Sr Vp | 119,401 | 0 | 119,401 | 15.8% | 02 Jan, 2024 |
| 3 | Timothy J Rogelstad | Sr Vp, Electric Platform | 61,080 | 0 | 61,080 | 8.1% | 12 Feb, 2026 |
| 4 | John S Abbott | Sr Vp, Manufacturing Platform | 50,896 | 0 | 50,896 | 6.7% | 12 Feb, 2026 |
| 5 | James B Stake | Director | 46,794 | 0 | 46,794 | 6.2% | 12 Apr, 2022 |
| 6 | Karen Bohn | Director | 45,850 | 0 | 45,850 | 6.1% | 19 Apr, 2023 |
| 7 | Steven L Fritze | Director | 30,533 | 0 | 30,533 | 4.0% | 14 Apr, 2025 |
| 8 | Kathryn O Johnson | Director | 29,453 | 0 | 29,453 | 3.9% | 14 Apr, 2026 |
| 9 | Paul L Knutson | Vp, Human Resources | 20,770 | 0 | 20,770 | 2.7% | 11 Aug, 2026 |
| 10 | Jennifer O. Smestad | Vp, General Council Corp Sec | 19,137 | 0 | 19,137 | 2.5% | 12 Feb, 2026 |
| 11 | Thomas J Webb | Director | 17,600 | 0 | 17,600 | 2.3% | 14 Apr, 2026 |
| 12 | Timothy J O'Keefe | Director | 0 | 11,943 | 11,943 | 1.6% | 07 Dec, 2021 |
| 13 | Nathan I Partain | Director | 10,969 | 0 | 10,969 | 1.4% | 14 Apr, 2026 |
| 14 | Todd R Wahlund | Chief Financial Officer | 10,347 | 0 | 10,347 | 1.4% | 09 Apr, 2026 |
| 15 | Michael E Lebeau | Director | 9,300 | 0 | 9,300 | 1.2% | 14 Apr, 2026 |
| 16 | Jeanne H Crain | Director | 7,071 | 0 | 7,071 | 0.9% | 14 Apr, 2026 |
| 17 | Mary E Ludford | Director | 7,071 | 0 | 7,071 | 0.9% | 14 Apr, 2026 |
| 18 | John D Erickson | President Ceo | 3,133 | 0 | 3,133 | 0.4% | 14 Apr, 2026 |
| 19 | Steven P Rasche | Director | 2,000 | 0 | 2,000 | 0.3% | 14 Apr, 2026 |
| 20 | Christopher B Clark | Director | 1,900 | 0 | 1,900 | 0.3% | 14 Apr, 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 |
|---|---|---|---|---|---|---|---|---|
| 10 Aug, 2026 | Paul L Knutson | Vp, Human Resources | Disposed S | 250 | $92.84 | $23.21K | 0 | Indirect |
| 11 Aug, 2026 | Paul L Knutson | Vp, Human Resources | Disposed S | 475 | $94.63 | $44.95K | 0 | Indirect |
| 07 Aug, 2026 | Paul L Knutson | Vp, Human Resources | Disposed S | 3,500 | $93.11 | $325.89K | 21,495 | Direct |
| 07 Aug, 2026 | Paul L Knutson | Vp, Human Resources | Disposed G | 725 | $0.00 | $0 | 20,770 | Direct |
| 07 Aug, 2026 | Paul L Knutson | Vp, Human Resources | Acquired G | 475 | $0.00 | $0 | 475 | Indirect |
| 07 Aug, 2026 | Paul L Knutson | Vp, Human Resources | Acquired G | 250 | $0.00 | $0 | 250 | Indirect |
| 13 Apr, 2026 | Tyler J Nelson | Vp, Chief Financial Officer | Acquired A | 800 | $0.00 | $0 | 800 | Direct |
| 13 Apr, 2026 | Timothy J Rogelstad | President | Acquired A | 1,400 | $0.00 | $0 | 1,400 | Direct |
| 13 Apr, 2026 | Jennifer O. Smestad | Svp General Counsel Corp Sec | Acquired A | 5,800 | $0.00 | $0 | 5,800 | Direct |
| 13 Apr, 2026 | Todd R Wahlund | Senior Vice President | Acquired A | 300 | $0.00 | $0 | 300 | Direct |
| 13 Apr, 2026 | Christopher B Clark | Director | Acquired A | 1,900 | — | — | 1,900 | Direct |
| 13 Apr, 2026 | Steven P Rasche | Director | Acquired A | 1,900 | — | — | 2,000 | Direct |
| 13 Apr, 2026 | Nathan I Partain | Director | Acquired A | 2,000 | — | — | 10,969 | Direct |
| 13 Apr, 2026 | John D Erickson | Director | Acquired A | 1,500 | — | — | 3,133 | Direct |
| 13 Apr, 2026 | Jeanne H Crain | Director | Acquired A | 1,500 | — | — | 7,071 | Direct |
| 13 Apr, 2026 | Mary E Ludford | Director | Acquired A | 1,500 | — | — | 7,071 | Direct |
| 13 Apr, 2026 | Michael E Lebeau | Director | Acquired A | 1,500 | — | — | 9,300 | Direct |
| 13 Apr, 2026 | Kathryn O Johnson | Director | Acquired A | 1,500 | — | — | 29,453 | Direct |
| 13 Apr, 2026 | Thomas J Webb | Director | Acquired A | 1,500 | — | — | 17,600 | Direct |
| 08 Apr, 2026 | Todd R Wahlund | Chief Financial Officer | Acquired M | 460 | $90.11 | $41.45K | 10,533 | Direct |