Preformed Line Products's three largest insider shareholders as of September 29, 2026 are Robert G Ruhlman (President Ceo, 810.40K shares), Katherine E. Wensink (TenPercentOwner, 810.40K shares), Randall M Ruhlman (TenPercentOwner, 446.61K shares).
| # | Insider | Position | Direct | Indirect | Total | Share of Insiders | Last Filed |
|---|---|---|---|---|---|---|---|
| 1 | Katherine E. Wensink | TenPercentOwner | 0 | 810,400 | 810,400 | 48.2% | 16 Sep, 2022 |
| 2 | Randall M Ruhlman | TenPercentOwner | 446,609 | 0 | 446,609 | 26.6% | 09 Sep, 2026 |
| 3 | Robert G Ruhlman | Executive Chairman | 249,673 | 60,000 | 309,673 | 18.4% | 04 Aug, 2026 |
| 4 | Maegan Adams Ruhlman Cross | Director | 5,972 | 18,000 | 23,972 | 1.4% | 04 Aug, 2026 |
| 5 | Jon Ryan Ruhlman | President | 2,784 | 18,000 | 20,784 | 1.2% | 04 Aug, 2026 |
| 6 | Michael E Gibbons | Director | 0 | 14,608 | 14,608 | 0.9% | 02 Jul, 2025 |
| 7 | Andrew S Klaus | Cfo | 13,918 | 0 | 13,918 | 0.8% | 12 Jun, 2026 |
| 8 | William H Iii Haag | V.P. International Operations | 10,276 | 0 | 10,276 | 0.6% | 11 Aug, 2023 |
| 9 | John J Olenik | Vp Research Engineering | 6,506 | 0 | 6,506 | 0.4% | 10 Jun, 2026 |
| 10 | R. Steven Kestner | Director | 6,406 | 0 | 6,406 | 0.4% | 17 Dec, 2025 |
| 11 | Glen E Corlett | Director | 5,611 | 0 | 5,611 | 0.3% | 16 Mar, 2026 |
| 12 | Richard R Gascoigne | Director | 0 | 4,111 | 4,111 | 0.2% | 17 Dec, 2025 |
| 13 | Timothy O'Shaughnessy | V.P. Human Resources | 3,250 | 0 | 3,250 | 0.2% | 10 Jun, 2026 |
| 14 | Matthew D Frymier | Director | 0 | 2,255 | 2,255 | 0.1% | 17 Dec, 2025 |
| 15 | Caroline Saylor Vaccariello | General Counselcorp Secretary | 1,908 | 0 | 1,908 | 0.1% | 11 Mar, 2026 |
| 16 | C Sunkle David | Vp Research Engineering | 1,607 | 0 | 1,607 | 0.1% | 11 Mar, 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 |
|---|---|---|---|---|---|---|---|---|
| 04 Sep, 2026 | Randall M Ruhlman | TenPercentOwner | Disposed S | 142 | $400.04 | $56.81K | 451,609 | Direct |
| 08 Sep, 2026 | Randall M Ruhlman | TenPercentOwner | Disposed S | 5,000 | $407.78 | $2.04Mn | 446,609 | Direct |
| 05 Aug, 2026 | Glen E Corlett | Director | Disposed S | 2,000 | $457.02 | $914.04K | 0 | Indirect |
| 09 Jun, 2026 | Robert G Ruhlman | Executive Chairman | Disposed G | 18,000 | $0.00 | $0 | 267,673 | Direct |
| 09 Jun, 2026 | Maegan Adams Ruhlman Cross | Director | Acquired G | 18,000 | $0.00 | $0 | 18,000 | Indirect |
| 09 Jun, 2026 | Jon Ryan Ruhlman | President | Acquired G | 18,000 | $0.00 | $0 | 18,000 | Indirect |
| 03 Aug, 2026 | Randall M Ruhlman | TenPercentOwner | Disposed J | 9,121 | $358.15 | $3.27Mn | 451,751 | Direct |
| 09 Jun, 2026 | Robert G Ruhlman | Executive Chairman | Disposed G | 18,000 | $0.00 | $0 | 249,673 | Direct |
| 03 Aug, 2026 | Randall M Ruhlman | TenPercentOwner | Acquired J | 9,121 | $358.15 | $3.27Mn | 414,321 | Indirect |
| 12 Jun, 2026 | Andrew S Klaus | Cfo | Disposed D | 635 | $362.22 | $230.01K | 13,918 | Direct |
| 11 Jun, 2026 | Jon Ryan Ruhlman | President | Disposed D | 1,000 | $360.68 | $360.68K | 2,784 | Direct |
| 10 Jun, 2026 | Timothy O'Shaughnessy | V.P. Human Resources | Disposed D | 750 | $360.91 | $270.68K | 3,250 | Direct |
| 10 Jun, 2026 | Assaad A Morcos | Vp, Us Manufacturing | Acquired M | 1,000 | $132.40 | $132.40K | 1,000 | Direct |
| 10 Jun, 2026 | John J Olenik | Vp Research Engineering | Disposed D | 1,000 | $360.91 | $360.91K | 6,506 | Direct |
| 10 Jun, 2026 | Assaad A Morcos | Vp, Us Manufacturing | Disposed D | 1,000 | $360.91 | $360.91K | 0 | Direct |
| 10 Jun, 2026 | Assaad A Morcos | Vp, Us Manufacturing | Disposed M | 1,000 | $132.40 | $132.40K | 3,750 | Direct |
| 08 Jun, 2026 | John M Hofstetter | Executive Vice President | Disposed D | 3,446 | $358.45 | $1.24Mn | 0 | Direct |
| 12 Mar, 2026 | Glen E Corlett | Director | Disposed D | 400 | $260.24 | $104.10K | 5,611 | Direct |
| 10 Mar, 2026 | Assaad A Morcos | Vp, Us Manufacturing | Acquired M | 1,750 | $132.40 | $231.70K | 1,750 | Direct |
| 12 Mar, 2026 | John J Olenik | Vp Research Engineering | Disposed D | 752 | $260.84 | $196.15K | 0 | Indirect |