Atkore's top three insider shareholders as of September 29, 2026 are William E Jr. Waltz (President And Ceo, 123.65K shares), John W Pregenzer (Coo President, Electrical, 61.41K shares), William E Jr. Waltz (President And Ceo, 36.84K shares).
| # | Insider | Position | Direct | Indirect | Total | Share of Insiders | Last Filed |
|---|---|---|---|---|---|---|---|
| 1 | William E Jr. Waltz | President And Ceo | 123,653 | 0 | 123,653 | 22.7% | 31 Aug, 2026 |
| 2 | John W Pregenzer | Coo President, Electrical | 61,411 | 0 | 61,411 | 11.3% | 31 Aug, 2026 |
| 3 | Leangela W. Lowe | Vp, Chief Hr Officer | 36,063 | 0 | 36,063 | 6.6% | 31 Aug, 2026 |
| 4 | Mark F. Lamps | Pres. Safety Infrastructure | 35,850 | 0 | 35,850 | 6.6% | 31 Aug, 2026 |
| 5 | Daniel S Kelly | Vp, General Counsel And Sec. | 32,666 | 0 | 32,666 | 6.0% | 31 Aug, 2026 |
| 6 | Scott H Muse | Director | 32,522 | 0 | 32,522 | 6.0% | 03 Mar, 2026 |
| 7 | David Paul Johnson | Vice President And Cfo | 32,471 | 0 | 32,471 | 6.0% | 04 Mar, 2024 |
| 8 | Jeri L Isbell | Director | 30,656 | 0 | 30,656 | 5.6% | 31 Aug, 2026 |
| 9 | A Mark Zeffiro | Director | 23,994 | 0 | 23,994 | 4.4% | 31 Aug, 2026 |
| 10 | William Vanarsdale | Director | 23,342 | 0 | 23,342 | 4.3% | 27 Jan, 2022 |
| 11 | Michael V Schrock | Director | 22,187 | 0 | 22,187 | 4.1% | 31 Aug, 2026 |
| 12 | Betty R. Wynn | Director | 20,616 | 0 | 20,616 | 3.8% | 31 Aug, 2026 |
| 13 | John Michael Deitzer | Vp, Cfo | 18,928 | 0 | 18,928 | 3.5% | 31 Aug, 2026 |
| 14 | Justin A Kershaw | Director | 18,750 | 0 | 18,750 | 3.4% | 31 Aug, 2026 |
| 15 | Wilbert W Jr James | Director | 17,191 | 0 | 17,191 | 3.2% | 31 Aug, 2026 |
| 16 | Barbara Joanne Edwards | Director | 6,100 | 0 | 6,100 | 1.1% | 31 Aug, 2026 |
| 17 | James William Alvey | Chief Accounting Officer | 5,449 | 0 | 5,449 | 1.0% | 31 Aug, 2026 |
| 18 | Franklin S. Jr. Edmonds | Director | 2,844 | 0 | 2,844 | 0.5% | 31 Aug, 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 |
|---|---|---|---|---|---|---|---|---|
| 28 Aug, 2026 | Franklin S. Jr. Edmonds | Director | Acquired A | 10 | $0.00 | $0 | 2,844 | Direct |
| 28 Aug, 2026 | James William Alvey | Chief Accounting Officer | Acquired A | 9 | $0.00 | $0 | 5,449 | Direct |
| 28 Aug, 2026 | A Mark Zeffiro | Director | Acquired A | 48 | $0.00 | $0 | 23,994 | Direct |
| 28 Aug, 2026 | Jeri L Isbell | Director | Acquired A | 98 | $0.00 | $0 | 30,656 | Direct |
| 28 Aug, 2026 | Michael V Schrock | Director | Acquired A | 8 | $0.00 | $0 | 22,187 | Direct |
| 28 Aug, 2026 | Mark F. Lamps | Pres. Safety Infrastructure | Acquired A | 47 | $0.00 | $0 | 35,850 | Direct |
| 28 Aug, 2026 | Betty R. Wynn | Director | Acquired A | 28 | $0.00 | $0 | 20,616 | Direct |
| 28 Aug, 2026 | John Michael Deitzer | Vp, Cfo | Acquired A | 47 | $0.00 | $0 | 18,928 | Direct |
| 28 Aug, 2026 | Daniel S Kelly | Vp, General Counsel And Sec. | Acquired A | 36 | $0.00 | $0 | 32,666 | Direct |
| 28 Aug, 2026 | Wilbert W Jr James | Director | Acquired A | 60 | $0.00 | $0 | 17,191 | Direct |
| 28 Aug, 2026 | Justin A Kershaw | Director | Acquired A | 66 | $0.00 | $0 | 18,750 | Direct |
| 28 Aug, 2026 | Barbara Joanne Edwards | Director | Acquired A | 18 | $0.00 | $0 | 6,100 | Direct |
| 28 Aug, 2026 | Leangela W. Lowe | Vp, Chief Hr Officer | Acquired A | 36 | $0.00 | $0 | 36,063 | Direct |
| 28 Aug, 2026 | John W Pregenzer | Coo President, Electrical | Acquired A | 82 | $0.00 | $0 | 61,411 | Direct |
| 28 Aug, 2026 | William E Jr. Waltz | President And Ceo | Acquired A | 242 | $0.00 | $0 | 123,653 | Direct |
| 10 Aug, 2026 | Mark F. Lamps | Pres. Safety Infrastructure | Disposed S | 300 | $93.75 | $28.13K | 35,803 | Direct |
| 29 May, 2026 | Michael V Schrock | Director | Acquired A | 9 | $0.00 | $0 | 22,179 | Direct |
| 29 May, 2026 | Wilbert W Jr James | Director | Acquired A | 68 | $0.00 | $0 | 17,131 | Direct |
| 29 May, 2026 | Jeri L Isbell | Director | Acquired A | 110 | $0.00 | $0 | 30,558 | Direct |
| 29 May, 2026 | Franklin S. Jr. Edmonds | Director | Acquired A | 11 | $0.00 | $0 | 2,834 | Direct |