As of April 22, 2026, SiteOne Landscape Supply's top three insider holders are Doug Black (Ceo, 495.75K shares), William W Iii Douglas (Director, 17.93K shares), Joseph Ketter (Evp, Human Resources, 14.64K shares).
| Holder | Position | Shares (Direct) | Shares (Indirect) | Report Date |
|---|---|---|---|---|
| Doug Black | Ceo | 482,161 | 13,591 | 17 Feb, 2026 |
| William W Iii Douglas | - | 17,934 | 0 | 16 May, 2025 |
| Joseph Ketter | Evp, Human Resources | 14,636 | 0 | 12 Feb, 2026 |
| Scott Salmon | Evp, Strategy Development | 13,705 | 0 | 12 Feb, 2026 |
| John T Guthrie | Evp, Cfo And Assistant Sec. | 13,569 | 0 | 01 Dec, 2025 |
| Fred M Diaz | - | 11,267 | 0 | 03 Sep, 2025 |
| L Briley Jr Brisendine | Evp, General Counsel Sec. | 11,175 | 0 | 13 Feb, 2025 |
| Webster Roy Dunbar | - | 10,485 | 0 | 16 May, 2025 |
| Greg Weller | Evp Of Operations | 10,260 | 0 | 17 Sep, 2021 |
| Fred M Diaz | - | 9,660 | 0 | 04 Apr, 2022 |
| Jeri L Isbell | - | 9,439 | 0 | 09 May, 2025 |
| Shannon Versaggi | Evp Mktg, Cat. Mgmt. Pricing | 7,143 | 0 | 12 Feb, 2026 |
| Larisa Drake | - | 6,188 | 0 | 09 May, 2025 |
| Eric J Elema | Evp, Cfo And Assistant Sec. | 2,911 | 0 | 17 Feb, 2026 |
| Judith S Sansone | - | 1,990 | 0 | 16 May, 2025 |
| Travis Ryan Jackson | General Counsel Secretary | 475 | 0 | 09 Feb, 2026 |
* Please note that the shares above only reflect shares from the fund portfolio and the institutional portfolio. Shares from the personal portfolio are excluded from this Institutional Ownership Page. See these insiders' latest transactions here on Insider Page.
| Transaction Date | Insider Name | Security Class | Transaction Type | Shares Traded | Price | Shares Remaining | Ownership | Code |
|---|---|---|---|---|---|---|---|---|
| 13 Feb, 2026 | Doug Black | Common Stock | D | 10,000 | $0.00 | 482,161 | D | G |
| 13 Feb, 2026 | Eric J Elema | Common Stock | A | 3,755 | $26.67 | 4,676 | D | M |
| 13 Feb, 2026 | Eric J Elema | Common Stock | D | 1,765 | $158.01 | 2,911 | D | S |
| 13 Feb, 2026 | Doug Black | Common Stock | A | 10,000 | $0.00 | 13,591 | I | G |
| 13 Feb, 2026 | Eric J Elema | Stock Options (right to buy) | A | 3,755 | $0.00 | 0 | D | M |
| 10 Feb, 2026 | Joseph Ketter | Common Stock | A | 255 | - | 14,766 | D | M |
| 10 Feb, 2026 | Eric J Elema | Common Stock | A | 72 | - | 946 | D | M |
| 10 Feb, 2026 | Scott Salmon | Common Stock | A | 278 | - | 13,791 | D | M |
| 10 Feb, 2026 | Doug Black | Common Stock | A | 1,579 | - | 492,863 | D | M |
| 10 Feb, 2026 | Shannon Versaggi | Common Stock | A | 232 | - | 7,226 | D | M |
| 10 Feb, 2026 | Eric J Elema | Common Stock | D | 25 | $148.78 | 921 | D | F |
| 10 Feb, 2026 | Joseph Ketter | Common Stock | D | 130 | $148.78 | 14,636 | D | F |
| 10 Feb, 2026 | Doug Black | Common Stock | D | 702 | $148.78 | 492,161 | D | F |
| 10 Feb, 2026 | Scott Salmon | Common Stock | D | 86 | $148.78 | 13,705 | D | F |
| 10 Feb, 2026 | Shannon Versaggi | Common Stock | D | 83 | $148.78 | 7,143 | D | F |
| 10 Feb, 2026 | Joseph Ketter | Restricted Stock Units | D | 255 | $0.00 | 0 | D | M |
| 10 Feb, 2026 | Scott Salmon | Restricted Stock Units | D | 278 | $0.00 | 0 | D | M |
| 10 Feb, 2026 | Shannon Versaggi | Restricted Stock Units | D | 232 | $0.00 | 0 | D | M |
| 10 Feb, 2026 | Eric J Elema | Restricted Stock Units | D | 72 | $0.00 | 0 | D | M |
| 10 Feb, 2026 | Doug Black | Restricted Stock Units | D | 1,579 | $0.00 | 0 | D | M |