SiteOne Landscape Supply, Inc.
US ˙ NYSE ˙ US82982L1035

SecuritySITE / SiteOne Landscape Supply, Inc.
InstitutionSei Investments Co
Latest Disclosed Ownership221,320 shares
Latest Disclosed Value $ 27,567,591
Sei Investments Co reports 3.64% increase in ownership of SITE / SiteOne Landscape Supply, Inc.

On February 13, 2026 - Sei Investments Co filed a 13F-HR form disclosing ownership of 221,320 shares of SiteOne Landscape Supply, Inc. (US:SITE) valued at $27,567,619 USD as of December 31, 2025. The entity filed a previous 13F-HR on November 13, 2025 disclosing 213,551 shares of SiteOne Landscape Supply, Inc.. This represents a change in shares of 3.64% during the quarter. The current value of the position is $22,762,762 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.

Upgrade to unlock premium data and export to Excel .

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)
2026-02-13 2025-12-31 13F SITEONE LANDSCAPE SUPPLY COM 82982L103 221,320 7,769 3.64 27,568 0.23
2025-11-13 2025-09-30 13F SITEONE LANDSCAPE SUPPLY COM 82982L103 213,551 -1,908 -0.89 27,505 5.56 0.0296
2025-08-14 2025-06-30 13F SITEONE LANDSCAPE SUPPLY COM 82982L103 215,459 6,232 2.98 26,058 2.55 0.0302
2025-05-14 2025-03-31 13F/A-1 SITEONE LANDSCAPE SUPPLY COM 82982L103 209,227 -11,272 -5.11 25,408 -12.55 0.0327
2025-05-13 2025-03-31 13F SITEONE LANDSCAPE SUPPLY COM 82982L103 220,751 252 29,030 0.0316
2025-02-11 2024-12-31 13F SITEONE LANDSCAPE SUPPLY COM 82982L103 220,499 17,358 8.54 29,055 -5.22 0.0373
2024-11-12 2024-09-30 13F SITEONE LANDSCAPE SUPPLY COM 82982L103 203,141 -13,734 -6.33 30,656 16.43 0.0398
2024-08-13 2024-06-30 13F SITEONE LANDSCAPE SUPPLY COM 82982L103 216,875 -39,696 -15.47 26,331 -41.21 0.0373
2024-05-07 2024-03-31 13F SITEONE LANDSCAPE SUPPLY COM 82982L103 256,571 -16,446 -6.02 44,785 0.94 0.0656
2024-02-14 2023-12-31 13F SITEONE LANDSCAPE SUPPLY COM 82982L103 273,017 40,702 17.52 44,366 16.84 0.0712
2023-11-14 2023-09-30 13F SITEONE LANDSCAPE SUPPLY COM 82982L103 232,315 -15,867 -6.39 37,972 -8.58 0.0682
2023-08-11 2023-06-30 13F SITEONE LANDSCAPE SUPPLY COM 82982L103 248,182 -59,014 -19.21 41,536 -1.21 0.0724
2023-05-12 2023-03-31 13F SITEONE LANDSCAPE SUPPLY COM 82982L103 307,196 106,864 53.34 42,046 78.90 0.0781
2023-02-10 2022-12-31 13F SITEONE LANDSCAPE SUPPLY COM 82982L103 200,332 -55,790 -21.78 23,503 -11.89 0.0522
2022-11-14 2022-09-30 13F SITEONE LANDSCAPE SUPPLY COM 82982L103 256,122 96,549 60.50 26,672 40.45 0.0595
2022-08-15 2022-06-30 13F SITEONE LANDSCAPE SUPPLY COM 82982L103 159,573 132,651 492.72 18,991 338.19 0.0410
2022-05-13 2022-03-31 13F SITEONE LANDSCAPE SUPPLY COM 82982L103 26,922 -9,784 -26.66 4,334 -51.11 0.0087
2022-02-14 2021-12-31 13F SITEONE LANDSCAPE SUPPLY COM 82982L103 36,706 5,153 16.33 8,865 40.96 0.0166
2021-11-12 2021-09-30 13F SITEONE LANDSCAPE SUPPLY COM 82982L103 31,553 564 1.82 6,289 19.40 0.0132
2021-08-06 2021-06-30 13F SITEONE LANDSCAPE SUPPLY COM 82982L103 30,989 -18,681 -37.61 5,267 -37.16 0.0117
2021-05-12 2021-03-31 13F SITEONE LANDSCAPE SUPPLY COM 82982L103 49,670 5,387 12.16 8,382 19.62 0.0211
2021-02-08 2020-12-31 13F SITEONE LANDSCAPE SUPPLY COM 82982L103 44,283 -6,789 -13.29 7,007 12.60 0.0181
2020-12-04 2020-09-30 13F/A-1 SITEONE LANDSCAPE SUPPLY COM 82982L103 51,072 375 0.74 6,223 7.72 0.0180
2020-11-06 2020-09-30 13F SITEONE LANDSCAPE SUPPLY COM 82982L103 56,342 -309,336 6,866 19,059.0715
2020-08-17 2020-06-30 13F/A-1 SITEONE LANDSCAPE SUPPLY COM 82982L103 50,697 -12,087 -19.25 5,777 23.65 0.0179
2020-08-11 2020-06-30 13F SITEONE LANDSCAPE SUPPLY COM 82982L103 45,653 -259,353 4,401 13,763.5969
2020-05-14 2020-03-31 13F SITEONE LANDSCAPE SUPPLY COM 82982L103 62,784 18,867 42.96 4,672 16.89 0.0172
2020-02-06 2019-12-31 13F SITEONE LANDSCAPE SUPPLY COM 82982L103 43,917 1,157 2.71 3,997 23.98 0.0119
2019-11-12 2019-09-30 13F SITEONE LANDSCAPE SUPPLY COM 82982L103 42,760 -176 -0.41 3,224 6.75 0.0082
2019-08-14 2019-06-30 13F SITEONE LANDSCAPE SUPPLY COM 82982L103 42,936 16,604 63.06 3,020 102.96 0.0099
2019-05-15 2019-03-31 13F SITEONE LANDSCAPE SUPPLY COM 82982L103 26,332 22,963 681.60 1,488 570.27 0.0050
2019-02-13 2018-12-31 13F SITEONE LANDSCAPE SUPPLY COM 82982L103 3,369 204 6.45 222 -5.13 0.0008
2019-02-13 2018-12-31 13F DDR COM 23317H854 687,493 -124,985 9,206 0.0328
2018-11-08 2018-09-30 13F SITEONE LANDSCAPE SUPPLY COM 82982L103 3,165 -1,828 -36.61 234 -44.15 0.0008
2018-11-08 2018-09-30 13F DDR COM 23317H854 812,478 125,821 10,880 0.0394
2018-08-03 2018-06-30 13F SITEONE LANDSCAPE SUPPLY COM 82982L103 4,993 2,201 78.83 419 94.88 0.0014
2018-08-03 2018-06-30 13F DDR COM 23317H854 686,657 -320,465 12,291 0.0418
2018-05-11 2018-03-31 13F SITEONE LANDSCAPE SUPPLY COM 82982L103 2,792 -247 -8.13 215 -7.73 0.0008
2018-05-11 2018-03-31 13F DDR COM 23317H102 1,007,122 175,186 7,383 0.0283
2018-02-08 2017-12-31 13F SITEONE LANDSCAPE SUPPLY COM 82982L103 3,039 -9,370 -75.51 233 -67.68 0.0008
2018-02-08 2017-12-31 13F DDR COM 23317H102 831,936 -287,491 7,454 0.0259
2017-11-06 2017-09-30 13F SITEONE LANDSCAPE SUPPLY COM 82982L103 12,409 -508 -3.93 721 7.29 0.0026
2017-11-06 2017-09-30 13F DDR COM 23317H102 1,119,427 47,000 10,255 0.0365
2017-07-31 2017-06-30 13F SITEONE LANDSCAPE SUPPLY COM 82982L103 12,917 9,609 290.48 672 320.00 0.0027
2017-07-31 2017-06-30 13F DDR COM 23317H102 1,072,427 15,936 9,727 0.0388
2017-05-05 2017-03-31 13F SITEONE LANDSCAPE SUPPLY COM 82982L103 3,308 -8,565 -72.14 160 -61.17 0.0007
2017-05-05 2017-03-31 13F DDR COM 23317H102 1,056,491 97,646 13,238 0.0580
2017-02-02 2016-12-31 13F SITEONE LANDSCAPE SUPPLY COM 82982L103 11,873 -1,094,228 -98.93 412 -97.86 0.0020
2017-02-02 2016-12-31 13F DDR COM 23317H102 958,845 -147,256 14,641 0.0709
2016-11-04 2016-09-30 13F DDR COM 23317H102 1,106,101 42,276 3.97 19,280 -0.09 0.0979
2016-08-11 2016-06-30 13F DDR COM 23317H102 1,063,825 -28,820 -2.64 19,297 -0.73 0.1157
2016-05-10 2016-03-31 13F/A-1 DDR COM 23317H102 1,092,645 -179,195 -14.09 19,438 -9.24 0.1210
2016-02-03 2015-12-31 13F DDR COM 23317H102 1,271,840 421,675 49.60 21,418 63.80 0.1305
2015-11-02 2015-09-30 13F/A-1 DDR COM 23317H102 850,165 -220,659 -20.61 13,076 -21.01 0.1200
2015-10-30 2015-09-30 13F DDR COM 23317H102 850,165 13,077
2015-08-07 2015-06-30 13F/A-1 DDR COM 23317H102 1,070,824 -45,735 -4.10 16,555 -20.37 0.1497
2015-08-04 2015-06-30 13F DDR COM 23317H102 1,070,824 -45,735 16,555 0.1497
2015-05-14 2015-03-31 13F/A-1 DDR COM 23317H102 1,116,559 71,639 6.86 20,790 8.37 0.1805
2015-05-01 2015-03-31 13F DDR COM 23317H102 1,116,559 20,790
2015-02-10 2014-12-31 13F DDR COM 23317H102 1,044,920 1,044,920 19,184 0.1696
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.