SITE insider buying and SEC filings, explained
SiteOne Landscape Supply, Inc. · CIK 1650729
Tracked: Forms 3/4/5, 8-K, NT · All filings on sec.gov
Insider activity in the last 12 months
Bought
$2.5M
Insiders who bought
2
Sold (not marked 10b5-1)
$258K
Planned sales (10b5-1)
$128K
Insider purchases and sales, last 12 months
| Traded | Type | What was filed | Source |
|---|---|---|---|
| Oct 30, 2026 | Purchase (code P) | Doug Black (CEO and Director) bought 9,100 shares indirectly (by trust) at about $110.30 ($1.0M), reported as a purchase (code P). Holdings by trust up 35% to 17,550 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Nov 3, 2026, 6:49 PM ET |
| Aug 26, 2026 | Purchase (code P) | Doug Black (CEO and Director) bought 5,000 shares indirectly (by trust) at $96.13 ($481K), reported as a purchase (code P). Holdings by trust up 63% to 13,000 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Aug 28, 2026 |
| Aug 4, 2026 | Purchase (code P) | Doug Black (CEO and Director) bought 8,000 shares indirectly (by trust) at about $102.04 ($816K), reported as a purchase (code P). New position of 8,000 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Aug 6, 2026 |
| May 27–28, 2026 | Planned (10b5-1) | Fred M Diaz (Director) sold 1,125 shares between May 27 and May 28 at about $113.83 ($128K), marked as a 10b5-1 plan trade. Holdings down 9% to 11,267 shares. | SEC filing Filed May 29, 2026 |
| May 6, 2026 | Purchase (code P) | Daniel T. Laughlin (SVP, Strategy & Development) bought 2,000 shares at $123.60 ($247K), reported as a purchase (code P). New position of 2,000 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed May 8, 2026 |
| Nov 26, 2025 | Sale | John T. Guthrie (CFO) sold 1,915 shares at about $134.83 ($258K). Holdings down 12% to 13,569 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Dec 1, 2025 |
43 routine transactions (such as grants, option exercises or tax withholding) are not listed.
Cluster buys
No cluster buys in the last 12 months.
Red flags
No red flags in the last 12 months.
Key events
No key events in the last 12 months.
8-K filings, last 12 months
No 8-K filings in the last 12 months.
Red flags are objective triggers only: the item or form filed, never an opinion.
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