SiteOne Landscape Supply, Inc.
US ˙ NYSE ˙ US82982L1035

SecuritySITE / SiteOne Landscape Supply, Inc.
InstitutionEngineers Gate Manager LP
Latest Disclosed Ownership2,886 shares
Latest Disclosed Value $ 384,156
Engineers Gate Manager LP reports 82.72% decrease in ownership of SITE / SiteOne Landscape Supply, Inc.

On May 15, 2026 - Engineers Gate Manager LP filed a 13F-HR form disclosing ownership of 2,886 shares of SiteOne Landscape Supply, Inc. (US:SITE) valued at $384,155 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 16,702 shares of SiteOne Landscape Supply, Inc.. This represents a change in shares of -82.72% during the quarter. The current value of the position is $296,825 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-05-15 2026-03-31 13F SITEONE LANDSCAPE SUPPLY COM 82982L103 2,886 -13,816 -82.72 384 -81.54 0.0048
2026-02-17 2025-12-31 13F SITEONE LANDSCAPE SUPPLY COM 82982L103 16,702 -1,633 -8.91 2,080 -11.90 0.0247
2025-11-14 2025-09-30 13F SITEONE LANDSCAPE SUPPLY COM 82982L103 18,335 9,243 101.66 2,362 114.83 0.0270
2025-08-14 2025-06-30 13F SITEONE LANDSCAPE SUPPLY COM 82982L103 9,092 -5,490 -37.65 1,100 -37.91 0.0137
2025-05-15 2025-03-31 13F SITEONE LANDSCAPE SUPPLY COM 82982L103 14,582 14,582 1,771 0.0299
2024-11-14 2024-09-30 13F SITEONE LANDSCAPE SUPPLY COM 82982L103 0 -35,499 -100.00 0 -100.00
2024-08-14 2024-06-30 13F SITEONE LANDSCAPE SUPPLY COM 82982L103 35,499 29,125 456.93 4,310 287.50 0.0972
2024-05-15 2024-03-31 13F SITEONE LANDSCAPE SUPPLY COM 82982L103 6,374 6,374 1,113 0.0293
2024-02-14 2023-12-31 13F SITEONE LANDSCAPE SUPPLY COM 82982L103 0 -1,296 -100.00 0 -100.00
2023-11-14 2023-09-30 13F SITEONE LANDSCAPE SUPPLY COM 82982L103 1,296 -965 -42.68 212 -44.18 0.0078
2023-08-14 2023-06-30 13F SITEONE LANDSCAPE SUPPLY COM 82982L103 2,261 2,261 378 0.0143
2023-05-15 2023-03-31 13F SITEONE LANDSCAPE SUPPLY COM 82982L103 0 -7,648 -100.00 0 -100.00
2023-02-14 2022-12-31 13F SITEONE LANDSCAPE SUPPLY COM 82982L103 7,648 -22,016 -74.22 897 -70.96 0.0539
2022-11-14 2022-09-30 13F SITEONE LANDSCAPE SUPPLY COM 82982L103 29,664 -28,341 -48.86 3,089 -55.20 0.1922
2022-08-15 2022-06-30 13F SITEONE LANDSCAPE SUPPLY COM 82982L103 58,005 42,369 270.97 6,895 172.75 0.2527
2022-05-16 2022-03-31 13F SITEONE LANDSCAPE SUPPLY COM 82982L103 15,636 -4,659 -22.96 2,528 -48.59 0.0989
2022-02-14 2021-12-31 13F SITEONE LANDSCAPE SUPPLY COM 82982L103 20,295 17,555 640.69 4,917 798.90 0.2211
2021-11-15 2021-09-30 13F SITEONE LANDSCAPE SUPPLY COM 82982L103 2,740 -8,097 -74.72 547 -70.17 0.0312
2021-08-16 2021-06-30 13F SITEONE LANDSCAPE SUPPLY COM 82982L103 10,837 9,337 622.47 1,834 616.41 0.1180
2021-05-17 2021-03-31 13F SITEONE LANDSCAPE SUPPLY COM 82982L103 1,500 -190 -11.24 256 -4.48 0.0127
2021-02-16 2020-12-31 13F SITEONE LANDSCAPE SUPPLY COM 82982L103 1,690 -11,193 -86.88 268 -82.94 0.0116
2020-11-16 2020-09-30 13F SITEONE LANDSCAPE SUPPLY COM 82982L103 12,883 9,669 300.84 1,571 329.23 0.0737
2020-08-17 2020-06-30 13F SITEONE LANDSCAPE SUPPLY COM 82982L103 3,214 -47,834 -93.70 366 -92.09 0.0186
2020-02-14 2019-12-31 13F SITEONE LANDSCAPE SUPPLY COM 82982L103 51,048 46,798 1,101.13 4,628 1,369.21 0.2035
2019-11-14 2019-09-30 13F SITEONE LANDSCAPE SUPPLY COM 82982L103 4,250 -13,245 -75.71 315 -74.03 0.0160
2019-08-14 2019-06-30 13F SITEONE LANDSCAPE SUPPLY COM 82982L103 17,495 17,495 1,213 0.0670
2018-02-01 2017-12-31 13F DDR COM 23317H102 0 -23,461 -100.00 0 -100.00
2017-11-13 2017-09-30 13F SITEONE LANDSCAPE SUPPLY COM 82982L103 23,461 23,461 1,363 0.1147
2017-11-13 2017-09-30 13F DDR COM 23317H102 61,800 38,339 566 0.0476
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.