SiteOne Landscape Supply
Supplies professional landscapers with irrigation, fertilizer, nursery, and hardscape products.
$98.40
After-hours close+1.99 (+2.06%)
At close$96.41(+0.95%)
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Breakdown13F · Form 4
Institutions 122.87%Insiders 1.45%
A 13F quarter can total more than the shares outstanding — sub-advisers file the same block twice, and a filer's own share count can be a quarter stale. No split is drawn from it.
Shares outstanding 43.66M · Float 40.69M · 93.2% free float
Institutions13F, as of Jun 30, 2026
401 holders · 53.64M shares · 63 new positions · 174 increased · 170 reduced · 95 closed
| Holder | Shares | % outstanding | Chg q/q | Filed |
|---|---|---|---|---|
| Price T Rowe Associates Inc /MD/ | 4.47M | 10.25% | −39.6K | Aug 14, 2026 |
| 59 North Capital Management, LP | 2.06M | 4.71% | +1.01M | Aug 14, 2026 |
| Kayne Anderson Rudnick Investment Management LLC | 2.05M | 4.69% | −438.6K | Aug 13, 2026 |
| Bamco Inc /NY/ | 2.03M | 4.65% | −30.3K | Aug 14, 2026 |
| Vanguard Capital Management LLC | 2.00M | 4.59% | −711 | Aug 13, 2026 |
| BlackRock, Inc. | 1.93M | 4.43% | −131.1K | Aug 7, 2026 |
| Vanguard Portfolio Management LLC | 1.73M | 3.96% | −39.8K | Aug 13, 2026 |
| T. Rowe Price Investment Management, Inc. | 1.65M | 3.79% | −40.8K | Aug 14, 2026 |
Beneficial owners13D/G · 5% or more, as filed
| Holder | % of class | Shares | Form | Filed |
|---|---|---|---|---|
| T. Rowe Price Associates, Inc. | 10.40% | 4.65M | 13G | Nov 14, 2025 ↗ |
| Kayne Anderson Rudnick Investment Management, LLC | 6.00% | 2.67M | 13G | Feb 13, 2026 ↗ |
| Vanguard Capital Management | 5.27% | 2.35M | 13G | Apr 30, 2026 ↗ |
| AQR Capital Management, LLC | 5.11% | 2.27M | 13G | May 14, 2026 ↗ |
InsidersForm 4
| Insider | Role | Shares | % outstanding | Filed |
|---|---|---|---|---|
| Doug Black | director, officer: CEO | 495.2K | 1.13% | Aug 28, 2026 |
| William W. III Douglas | director | 19.1K | 0.04% | May 14, 2026 |
| Jack L. Wyszomierski | director | 19.1K | 0.04% | May 14, 2026 |
| Joseph Ketter | officer: EVP, Human Resources | 14.6K | 0.03% | Feb 12, 2026 |
| Scott Salmon | officer: EVP, Strategy & Development | 13.7K | 0.03% | Feb 12, 2026 |
| John T. Guthrie | officer: EVP, CFO and Assistant Sec. | 13.6K | 0.03% | Dec 1, 2025 |
| Webster Roy Dunbar | director | 11.7K | 0.03% | May 14, 2026 |
| Jeri L. Isbell | director | 11.4K | 0.03% | May 14, 2026 |
| Fred M. Diaz | director | 11.3K | 0.03% | May 29, 2026 |
| Larisa Drake | director | 7.3K | 0.02% | May 14, 2026 |
2 ten-percent owners hold 5.43M shares by Form 4, outside the officers-and-directors figure above · 3 people have not refiled in the last 18 months (25.2K shares), so they are not in the figure above
Latest trades
| Date | Insider | Type | Shares | Avg price | Owned after |
|---|---|---|---|---|---|
| Aug 26, 2026 | Doug Blackdirector, officer: CEO | Purchase | 5,000 | $96.13 | 13,000 |
| Aug 4, 2026 | Doug Blackdirector, officer: CEO | Purchase · 2 lots | 8,000 | $102.04 | 8,000 |
| May 28, 2026 | Fred M. Diazdirector | Sale | 562 | $112.52 | 11,267 |
| May 27, 2026 | Fred M. Diazdirector | Sale | 563 | $115.13 | 11,829 |
| May 6, 2026 | Daniel T. Laughlinofficer: SVP, Strategy & Development | Purchase | 2,000 | $123.60 | 2,000 |
| Feb 13, 2026 | Eric J. Elemaofficer: EVP, CFO and Assistant Sec. | Sale | 1,765 | $158.01 | 2,911 |
| Nov 26, 2025 | John T. Guthrieofficer: EVP, CFO and Assistant Sec. | Sale | 1,915 | $134.83 | 13,569 |
| Aug 29, 2025 | Fred M. Diazdirector | Sale | 865 | $145.07 | 11,267 |
CongressHouse and Senate disclosures
Not reported.