SiteOne Landscape Supply, Inc. Insider Trading Activity
Every SEC Form 4 insider transaction reported for SiteOne Landscape Supply, Inc. (SITE), sourced directly from SEC EDGAR and updated as new filings are accepted.
By Trabud · Insider-trading data from SEC EDGAR
Latest filing:
Compiled automatically from SEC EDGAR Form 4 filings and refreshed daily. Figures count purchases (code P) and sales (code S) only — not grants, option exercises, or gifts. How this page is built. Not investment advice.
Quick Answer
Are SITE insiders buying or selling?
In the last 12 months, SiteOne Landscape Supply, Inc. insiders reported 3 open-market purchases ($1.5M) and 3 sales ($665.1K) — net buying of $879.0K. Since January 2018, Trabud has recorded 178 Form 4 filings for SITE: 6 buys ($4.0M) and 172 sells ($192.9M).
Source: SEC EDGAR Form 4
What stands out
- The largest open-market purchase in the last 12 months was $816.3K by Doug Black (CEO) on Aug 6, 2026. SEC ↗
- The most recent open-market purchase was reported on Aug 28, 2026 (51 days ago).
Key Statistics (January 2018 – Aug 28, 2026)
Total Form 4 filings
178
SEC EDGAR
Insider filers
11
Insider buys (6)
$4.0M
Insider sells (172)
$192.9M
Insider sentiment
Net sellingNet insider flow of $188.9M in net selling since January 2018, and $879.0K in net buying over the last 12 months. 2 insider buys in the last 90 days.
Recent SITE insider transactions
| Date | Insider | Role | Type | Shares | Price | Value | Filing |
|---|---|---|---|---|---|---|---|
| Aug 28, 2026 | Doug Black | CEO | Purchase | 5.0K | $96.13 | $480.6K | SEC ↗ |
| Aug 6, 2026 | Doug Black | CEO | Purchase | 8.0K | $102.03 | $816.3K | SEC ↗ |
| May 29, 2026 | Fred M Diaz | Director | Sale | 1.1K | $113.83 | $128.1K | SEC ↗ |
| May 8, 2026 | Daniel T. Laughlin | SVP, Strategy & Development | Purchase | 2.0K | $123.60 | $247.2K | SEC ↗ |
| Feb 17, 2026 | Eric J Elema | EVP, CFO and Assistant Sec. | Sale | 1.8K | $158.01 | $278.9K | SEC ↗ |
| Dec 1, 2025 | John T Guthrie | EVP, CFO and Assistant Sec. | Sale | 1.9K | $134.83 | $258.2K | SEC ↗ |
| Sep 3, 2025 | Fred M Diaz | Director | Sale | 865 | $145.07 | $125.5K | SEC ↗ |
| Jul 29, 2025 | Doug Black | CEO | Sale | 7.4K | $132.09 | $975.4K | SEC ↗ |
| Jul 14, 2025 | Doug Black | CEO | Sale | 29.8K | $129.28 | $3.8M | SEC ↗ |
| Jul 3, 2025 | Joseph Ketter | EVP, Human Resources | Sale | 39.6K | $126.28 | $5.0M | SEC ↗ |
| Feb 28, 2025 | Doug Black | CEO | Sale | 7.4K | $131.92 | $974.4K | SEC ↗ |
| Nov 22, 2024 | Joseph Ketter | EVP, Human Resources | Sale | 6.5K | $142.20 | $924.3K | SEC ↗ |
| Aug 7, 2024 | Fred M Diaz | Director | Sale | 878 | $129.04 | $113.3K | SEC ↗ |
| May 17, 2024 | Doug Black | CEO | Sale | 10.0K | $160.01 | $1.6M | SEC ↗ |
| Apr 18, 2024 | Doug Black | CEO | Sale | 10.0K | $162.10 | $1.6M | SEC ↗ |
| Mar 14, 2024 | Doug Black | CEO | Sale | 10.0K | $176.35 | $1.8M | SEC ↗ |
| Mar 11, 2024 | John T Guthrie | EVP, CFO and Assistant Sec. | Sale | 3.0K | $180.00 | $540.0K | SEC ↗ |
| Mar 1, 2024 | Joseph Ketter | EVP, Human Resources | Sale | 550 | $165.30 | $90.9K | SEC ↗ |
| Feb 22, 2024 | Doug Black | CEO | Sale | 10.0K | $162.64 | $1.6M | SEC ↗ |
| Jan 19, 2024 | Doug Black | CEO | Sale | 10.0K | $153.29 | $1.5M | SEC ↗ |
| Dec 22, 2023 | Doug Black | CEO | Sale | 10.0K | $165.37 | $1.7M | SEC ↗ |
| Dec 15, 2023 | John T Guthrie | EVP, CFO and Assistant Sec. | Sale | 3.0K | $170.00 | $510.0K | SEC ↗ |
| Dec 15, 2023 | Doug Black | CEO | Sale | 8.0K | $147.70 | $1.2M | SEC ↗ |
| Nov 17, 2023 | Doug Black | CEO | Sale | 8.0K | $140.27 | $1.1M | SEC ↗ |
| Oct 20, 2023 | Doug Black | CEO | Sale | 8.0K | $145.12 | $1.2M | SEC ↗ |
Showing the 25 most recent of 178 Form 4 filings for SiteOne Landscape Supply, Inc..
Most active SITE insiders
- Doug Black64 filings
- John T Guthrie33 filings
- Briley L Brisendine Jr27 filings
- Pascal Convers18 filings
- Ross Anker13 filings
Ask anything about SITE insider activity
Use Trabud's AI agent to query SiteOne Landscape Supply, Inc.'s Form 4 history in plain English — "Show me SITE CEO purchases this year" or compare it against any other ticker.
Open the AI agentSITE insider trading FAQ
Are SiteOne Landscape Supply, Inc. insiders buying or selling?
In the last 12 months, SiteOne Landscape Supply, Inc. insiders reported 3 open-market purchases ($1.5M) and 3 sales ($665.1K) — net buying of $879.0K. Since January 2018, Trabud has recorded 178 Form 4 filings for SITE: 6 buys ($4.0M) and 172 sells ($192.9M). Over the full record that is net selling of $188.9M.
How many insiders trade SITE stock?
11 distinct insider filers — officers, directors, 10%+ owners, and investment groups filing jointly — have reported Form 4 transactions for SiteOne Landscape Supply, Inc.. The most recent filing was accepted on Aug 28, 2026.
Where does Trabud get SITE insider trading data?
All SITE insider trading data comes directly from official SEC EDGAR Form 4 filings, which corporate insiders must submit within two business days of a transaction under Section 16(a) of the Securities Exchange Act of 1934.