SiteOne Landscape Supply Inc
Ownership
Ownership Structure
Who owns SiteOne Landscape Supply Inc (SITE)? This page shows the largest institutions and funds, the ownership structure and the latest insider transactions. 98.3% of the shares are freely tradable; institutional investors hold 115.8%.
Largest Shareholders
Institutions
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| T. Rowe Price Associates, Inc. | 10.34 | 4,513,643 | +1.0 | 03/31/2026 |
| Kayne Anderson Rudnick Investment Management LLC | 5.70 | 2,486,718 | -6.8 | 03/31/2026 |
| AQR Capital Management LLC | 5.21 | 2,272,825 | +228.7 | 03/31/2026 |
| BlackRock Inc | 4.73 | 2,065,846 | +4.2 | 03/31/2026 |
| BAMCO Inc | 4.72 | 2,059,076 | +1.5 | 03/31/2026 |
| 59 North Capital Management, LP | 4.71 | 2,057,212 | +96.0 | 06/30/2026 |
| Vanguard Capital Management, LLC | 4.59 | 2,005,149 | +0.0 | 03/31/2026 |
| Vanguard Portfolio Management, LLC | 4.05 | 1,767,706 | +0.0 | 03/31/2026 |
| T. Rowe Price Investment Management,Inc. | 3.88 | 1,693,852 | -22.6 | 03/31/2026 |
Funds
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| Vanguard MStar Total Stk Mkt Idx Invest | 3.24 | 1,412,891 | +0.3 | 07/31/2026 |
Largest reported positions according to regulatory filings; stake as a percentage of shares outstanding, change versus the previous filing. Source: fundamentals data.
Insider holdings
| Person | Role | Shares | Value | As of | Type |
|---|---|---|---|---|---|
| Black Doug | CEO | 21,000 | 1,871,100 $ | Aug 4, 2026 | indirect |
Holdings as of each person's most recent SEC Form 4 filing — excluding options and RSUs, which are not shares yet. Holdings may have changed between two filings.
Insiders
Insider Transactions
| Date | Person | Role | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Aug 26, 2026 | Black Doug | CEO | Buy | 5,000 | 96.13 | 480,650 |
| Aug 4, 2026 | Black Doug | CEO | Buy | 4,000 | 102.13 | 408,520 |
Reportable transactions by officers and major shareholders from SEC Form 4 filings. "Other" includes things like stock grants and option exercises without a buy/sell character. View all insider transactions →
Data as of: September 17, 2026 · Source: fundamental data & SEC filings (annual and quarterly reports, 10-K/10-Q)
Note: pure fact-based analysis, not investment advice and not a solicitation to buy or sell. All figures without guarantee.