POOL's three largest insider shareholders as of September 29, 2026 are De La Mesa Manuel J Perez (Vice Chairman, 940.08K shares), Peter D Arvan (President/Ceo, 111.00K shares), Romain Kenneth G St (Senior Vice President, 92.26K shares).
| # | Insider | Position | Direct | Indirect | Total | Share of Insiders | Last Filed |
|---|---|---|---|---|---|---|---|
| 1 | De La Mesa Manuel J Perez | Vice Chairman | 0 | 940,080 | 940,080 | 73.6% | 14 Aug, 2026 |
| 2 | Peter D Arvan | President/Ceo | 110,999 | 0 | 110,999 | 8.7% | 27 Feb, 2026 |
| 3 | Romain Kenneth G St | Senior Vice President | 92,258 | 0 | 92,258 | 7.2% | 27 Feb, 2026 |
| 4 | Melanie M Hart | Senior Vp Cfo And Treasurer | 26,387 | 0 | 26,387 | 2.1% | 27 Mar, 2026 |
| 5 | John Bruce Watwood | President/Ceo | 21,413 | 0 | 21,413 | 1.7% | 05 May, 2026 |
| 6 | John E Stokely | Director | 16,230 | 0 | 16,230 | 1.3% | 08 May, 2026 |
| 7 | Jennifer M Neil | Sr Vp, Sec Chief Legal Off | 13,969 | 0 | 13,969 | 1.1% | 26 Mar, 2026 |
| 8 | Harlan F Seymour | Director | 10,659 | 0 | 10,659 | 0.8% | 05 May, 2022 |
| 9 | David G Whalen | Director | 8,939 | 0 | 8,939 | 0.7% | 01 Jun, 2026 |
| 10 | Timothy M Graven | Director | 6,024 | 0 | 6,024 | 0.5% | 05 May, 2022 |
| 11 | Jeffrey Clay | President Horizon | 5,093 | 0 | 5,093 | 0.4% | 25 Feb, 2022 |
| 12 | James D Hope | Director | 3,678 | 0 | 3,678 | 0.3% | 08 May, 2026 |
| 13 | Debra Sue Oler | Director | 3,607 | 0 | 3,607 | 0.3% | 30 Apr, 2026 |
| 14 | Martha S Gervasi | Director | 2,617 | 0 | 2,617 | 0.2% | 30 Apr, 2026 |
| 15 | Robert C Sledd | Director | 2,529 | 0 | 2,529 | 0.2% | 05 May, 2023 |
| 16 | Kristopher Robert Neff | Vice President, Strategy Cor | 2,456 | 0 | 2,456 | 0.2% | 01 Mar, 2024 |
| 17 | David B. Collier | Vice President Of Operations A | 2,453 | 0 | 2,453 | 0.2% | 25 Feb, 2022 |
| 18 | Ilya Mihaly | Vice President Operations | 2,204 | 0 | 2,204 | 0.2% | 01 Mar, 2024 |
| 19 | Walker Saik | Chief Accounting Officer | 1,959 | 0 | 1,959 | 0.2% | 29 Jul, 2026 |
| 20 | Carlos A. Sabater | Director | 1,915 | 0 | 1,915 | 0.1% | 02 May, 2025 |
| 21 | Mark A Pompa | Director | 1,169 | 0 | 1,169 | 0.1% | 30 Apr, 2026 |
| 22 | Kevin Michael Murphy | Director | 1,105 | 0 | 1,105 | 0.1% | 30 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 |
|---|---|---|---|---|---|---|---|---|
| 13 Aug, 2026 | De La Mesa Manuel J Perez | Director | Disposed G | 3,963 | $0.00 | $0 | 896,009 | Indirect |
| 13 Aug, 2026 | De La Mesa Manuel J Perez | Director | Acquired G | 3,963 | $0.00 | $0 | 44,071 | Indirect |
| 27 Jul, 2026 | Walker Saik | Chief Accounting Officer | Disposed F | 22 | $184.61 | $4.06K | 1,959 | Direct |
| 28 May, 2026 | David G Whalen | Director | Acquired L | 3 | $185.60 | $557 | 8,939 | Direct |
| 13 May, 2026 | De La Mesa Manuel J Perez | Director | Acquired P | 10,000 | $175.95 | $1.76Mn | 40,108 | Indirect |
| 08 May, 2026 | David G Whalen | Director | Acquired P | 525 | $190.44 | $99.98K | 8,936 | Direct |
| 07 May, 2026 | De La Mesa Manuel J Perez | Director | Acquired P | 10,000 | $190.00 | $1.90Mn | 30,108 | Indirect |
| 07 May, 2026 | James D Hope | Director | Acquired P | 464 | $194.42 | $90.21K | 3,678 | Direct |
| 07 May, 2026 | John E Stokely | Director | Acquired P | 1,000 | $193.07 | $193.07K | 16,230 | Direct |
| 04 May, 2026 | John Bruce Watwood | President/Ceo | Acquired A | 4,305 | $0.00 | $0 | 12,803 | Direct |
| 04 May, 2026 | John Bruce Watwood | President/Ceo | Acquired A | 8,610 | $0.00 | $0 | 21,413 | Direct |
| 29 Apr, 2026 | De La Mesa Manuel J Perez | Director | Acquired A | 2,604 | $0.00 | $0 | 2,604 | Direct |
| 29 Apr, 2026 | David G Whalen | Director | Acquired A | 644 | $0.00 | $0 | 8,411 | Direct |
| 29 Apr, 2026 | Martha S Gervasi | Director | Acquired A | 644 | $0.00 | $0 | 2,617 | Direct |
| 29 Apr, 2026 | Kevin Michael Murphy | Director | Acquired A | 644 | $0.00 | $0 | 1,105 | Direct |
| 29 Apr, 2026 | Debra Sue Oler | Director | Acquired A | 644 | $0.00 | $0 | 3,607 | Direct |
| 29 Apr, 2026 | Mark A Pompa | Director | Acquired A | 1,169 | $0.00 | $0 | 1,169 | Direct |
| 29 Apr, 2026 | John E Stokely | Director | Acquired A | 644 | $0.00 | $0 | 15,230 | Direct |
| 29 Apr, 2026 | James D Hope | Director | Acquired A | 644 | $0.00 | $0 | 3,214 | Direct |
| 07 Apr, 2026 | De La Mesa Manuel J Perez | Director | Disposed G | 90,000 | $0.00 | $0 | 20,108 | Indirect |