SiteOne Landscape Supply, Inc. (SITE) · Insider trading

What SiteOne Landscape Supply's directors, officers and largest holders bought and sold themselves, from the Form 4 each of them files with the SEC within two business days of a trade. Open-market purchases and sales first: those are the trades somebody chose to make at the market price.

Bought, 12 months

$1.54M

2 insiders, 4 trades

Sold, 12 months

$665,142

3 insiders, 19% under a plan

Net, 12 months

+$878,988

bought less sold

Latest filing

2026-08-28

filings read to 2026-10-19

Bought and sold at the market, by month

Two years. Purchases above the line, sales below, in dollars.

Bought Sold Largest month: $9.83M

Who traded, two years

Insider	Bought	Sold	Trades	Last trade	Holds after
Black DougDirector, CEO	$1.30M	$5.80M	6	2026-08-26	–
Ketter JosephEVP, Human Resources	–	$5.93M	2	2025-07-01	13,663
Elema Eric JEVP, CFO and Assistant Sec.	–	$278,888	1	2026-02-13	2,911
Guthrie John TEVP, CFO and Assistant Sec.	–	$258,199	1	2025-11-26	13,569
Diaz Fred MDirector	–	$253,540	3	2026-05-28	11,267
Laughlin Daniel T.SVP, Strategy & Development	$247,200	–	1	2026-05-06	2,000

Open-market purchases and sales

Newest first. “Plan” marks a trade made under a 10b5-1 plan set up in advance.

Date	Insider	Trade	Shares	Price	Value	Holds after	Filing
2026-08-26	Black DougDirector, CEO	Buyindirect	5,000	96.13	$480,650	13,000	Form 4
2026-08-04	Black DougDirector, CEO	Buyindirect	4,000	101.94	$407,760	4,000	Form 4
2026-08-04	Black DougDirector, CEO	Buyindirect	4,000	102.13	$408,520	8,000	Form 4
2026-05-28	Diaz Fred MDirector	Saleplan	562	112.52	$63,236	11,267	Form 4
2026-05-27	Diaz Fred MDirector	Saleplan	563	115.13	$64,818	11,829	Form 4
2026-05-06	Laughlin Daniel T.SVP, Strategy & Development	Buy	2,000	123.60	$247,200	2,000	Form 4
2026-02-13	Elema Eric JEVP, CFO and Assistant Sec.	Sale	1,765	158.01	$278,888	2,911	Form 4
2025-11-26	Guthrie John TEVP, CFO and Assistant Sec.	Sale	1,915	134.83	$258,199	13,569	Form 4
2025-08-29	Diaz Fred MDirector	Saleplan	865	145.07	$125,486	11,267	Form 4
2025-07-25	Black DougDirector, CEO	Saleplan	7,384	132.09	$975,353	600,446	Form 4
2025-07-11	Black DougDirector, CEO	Saleplan	29,760	129.28	$3.85M	596,684	Form 4
2025-07-01	Ketter JosephEVP, Human Resources	Saleplan	39,640	126.28	$5.01M	13,663	Form 4
2025-02-26	Black DougDirector, CEO	Saleplan	7,386	131.92	$974,361	581,862	Form 4
2024-11-21	Ketter JosephEVP, Human Resources	Sale	6,500	142.20	$924,300	12,942	Form 4

Grants, exercises and other transactions

Pay, tax and paperwork rather than a choice to trade at the market price. Two years.

60 × option exercise47 × shares withheld for tax10 × gift8 × grant or award

Show them

Date	Insider	What	Shares	Price	Holds after	Filing
2026-06-02	Jackson Travis RyanGeneral Counsel & Secretary	Option exercise M	+547	–	1,022	Form 4
2026-06-02	Jackson Travis RyanGeneral Counsel & Secretary	Shares withheld for tax F	−160	103.82	862	Form 4
2026-05-13	Douglas William W IIIDirector	Grant or award A	+1,186	–	19,120	Form 4
2026-05-13	Dunbar Webster RoyDirector	Grant or award A	+1,186	–	11,671	Form 4
2026-05-13	Sansone Judith SDirector	Grant or award A	+1,186	–	3,176	Form 4
2026-05-13	Wyszomierski Jack LDirector	Grant or award A	+1,186	–	19,120	Form 4
2026-05-12	Diaz Fred MDirector	Option exercise M	+1,125	–	12,392	Form 4
2026-05-12	Drake LarisaDirector	Option exercise M	+1,125	–	7,313	Form 4
2026-05-12	Isbell Jeri LDirector	Option exercise M	+1,125	–	11,442	Form 4
2026-05-01	Isbell Jeri LDirector	Option exercise M	+878	–	10,317	Form 4
2026-02-13	Elema Eric JEVP, CFO and Assistant Sec.	Option exercise M	+3,755	26.67	4,676	Form 4
2026-02-13	Black DougDirector, CEO	Gift G	−10,000	–	482,161	Form 4
2026-02-13	Black DougDirector, CEO	Gift G	+10,000	–	13,591	Form 4
2026-02-10	Black DougDirector, CEO	Option exercise M	+1,579	–	492,863	Form 4
2026-02-10	Black DougDirector, CEO	Shares withheld for tax F	−702	148.78	492,161	Form 4
2026-02-10	Versaggi ShannonEVP Mktg, Cat. Mgmt. & Pricing	Option exercise M	+232	–	7,226	Form 4
2026-02-10	Versaggi ShannonEVP Mktg, Cat. Mgmt. & Pricing	Shares withheld for tax F	−83	148.78	7,143	Form 4
2026-02-10	Salmon ScottEVP, Strategy & Development	Option exercise M	+278	–	13,791	Form 4
2026-02-10	Salmon ScottEVP, Strategy & Development	Shares withheld for tax F	−86	148.78	13,705	Form 4
2026-02-10	Ketter JosephEVP, Human Resources	Option exercise M	+255	–	14,766	Form 4
2026-02-10	Ketter JosephEVP, Human Resources	Shares withheld for tax F	−130	148.78	14,636	Form 4
2026-02-10	Elema Eric JEVP, CFO and Assistant Sec.	Option exercise M	+72	–	946	Form 4
2026-02-10	Elema Eric JEVP, CFO and Assistant Sec.	Shares withheld for tax F	−25	148.78	921	Form 4
2026-02-09	Versaggi ShannonEVP Mktg, Cat. Mgmt. & Pricing	Option exercise M	+334	–	7,113	Form 4
2026-02-09	Versaggi ShannonEVP Mktg, Cat. Mgmt. & Pricing	Shares withheld for tax F	−119	145.65	6,994	Form 4
2026-02-09	Ketter JosephEVP, Human Resources	Option exercise M	+334	–	14,655	Form 4
2026-02-09	Ketter JosephEVP, Human Resources	Shares withheld for tax F	−144	145.65	14,511	Form 4
2026-02-09	Elema Eric JEVP, CFO and Assistant Sec.	Option exercise M	+90	–	899	Form 4
2026-02-09	Elema Eric JEVP, CFO and Assistant Sec.	Shares withheld for tax F	−25	145.65	874	Form 4
2026-02-09	Salmon ScottEVP, Strategy & Development	Option exercise M	+363	–	13,625	Form 4
2026-02-09	Salmon ScottEVP, Strategy & Development	Shares withheld for tax F	−112	145.65	13,513	Form 4
2026-02-09	Black DougDirector, CEO	Option exercise M	+2,009	–	492,132	Form 4
2026-02-09	Black DougDirector, CEO	Shares withheld for tax F	−848	145.65	491,284	Form 4
2026-02-07	Ketter JosephEVP, Human Resources	Option exercise M	+515	–	14,544	Form 4
2026-02-07	Ketter JosephEVP, Human Resources	Shares withheld for tax F	−223	150.01	14,321	Form 4
2026-02-07	Elema Eric JEVP, CFO and Assistant Sec.	Option exercise M	+103	–	838	Form 4
2026-02-07	Elema Eric JEVP, CFO and Assistant Sec.	Shares withheld for tax F	−29	150.01	809	Form 4
2026-02-07	Salmon ScottEVP, Strategy & Development	Option exercise M	+536	–	13,437	Form 4
2026-02-07	Salmon ScottEVP, Strategy & Development	Shares withheld for tax F	−175	150.01	13,262	Form 4
2026-02-07	Versaggi ShannonEVP Mktg, Cat. Mgmt. & Pricing	Option exercise M	+515	–	6,975	Form 4
2026-02-07	Versaggi ShannonEVP Mktg, Cat. Mgmt. & Pricing	Shares withheld for tax F	−196	150.01	6,779	Form 4
2026-02-07	Black DougDirector, CEO	Option exercise M	+3,094	–	491,090	Form 4
2026-02-07	Black DougDirector, CEO	Shares withheld for tax F	−967	150.01	490,123	Form 4
2026-02-05	Elema Eric JEVP, CFO and Assistant Sec.	Option exercise M	+167	–	781	Form 4
2026-02-05	Elema Eric JEVP, CFO and Assistant Sec.	Shares withheld for tax F	−46	148.03	735	Form 4
2026-02-05	Jackson Travis RyanGeneral Counsel & Secretary	Option exercise M	+368	–	602	Form 4
2026-02-05	Jackson Travis RyanGeneral Counsel & Secretary	Shares withheld for tax F	−127	148.03	475	Form 4
2026-02-05	Ketter JosephEVP, Human Resources	Option exercise M	+644	–	14,307	Form 4
2026-02-05	Ketter JosephEVP, Human Resources	Shares withheld for tax F	−278	148.03	14,029	Form 4
2026-02-05	Salmon ScottEVP, Strategy & Development	Option exercise M	+667	–	13,142	Form 4
2026-02-05	Salmon ScottEVP, Strategy & Development	Shares withheld for tax F	−241	148.03	12,901	Form 4
2026-02-05	Versaggi ShannonEVP Mktg, Cat. Mgmt. & Pricing	Option exercise M	+644	–	6,722	Form 4
2026-02-05	Versaggi ShannonEVP Mktg, Cat. Mgmt. & Pricing	Shares withheld for tax F	−262	148.03	6,460	Form 4
2026-02-05	Black DougDirector, CEO	Option exercise M	+3,865	–	489,045	Form 4
2026-02-05	Black DougDirector, CEO	Shares withheld for tax F	−1,049	148.03	487,996	Form 4
2025-12-02	Jackson Travis RyanGeneral Counsel & Secretary	Option exercise M	+330	–	330	Form 4
2025-12-02	Jackson Travis RyanGeneral Counsel & Secretary	Shares withheld for tax F	−96	133.15	234	Form 4
2025-11-20	Guthrie John TEVP, CFO and Assistant Sec.	Gift G	−230	–	15,484	Form 4
2025-11-19	Guthrie John TEVP, CFO and Assistant Sec.	Gift G	−230	–	15,714	Form 4
2025-11-04	Black DougDirector, CEO	Gift G	−8,000	–	485,180	Form 4
2025-09-03	Black DougDirector, CEO	Gift G	−3,591	–	493,180	Form 4
2025-09-03	Black DougDirector, CEO	Gift G	+3,591	–	3,591	Form 4
2025-08-29	Black DougDirector, CEO	Gift G	−93,675	–	496,771	Form 4
2025-08-01	Black DougDirector, CEO	Gift G	−10,000	–	590,446	Form 4
2025-07-25	Black DougDirector, CEO	Option exercise M	+11,146	51.59	607,830	Form 4
2025-07-11	Black DougDirector, CEO	Option exercise M	+44,582	51.59	626,444	Form 4
2025-07-01	Ketter JosephEVP, Human Resources	Option exercise M	+39,640	12.84	53,303	Form 4
2025-05-14	Sansone Judith SDirector	Grant or award A	+1,125	–	1,990	Form 4
2025-05-14	Wyszomierski Jack LDirector	Grant or award A	+1,125	–	17,934	Form 4
2025-05-14	Douglas William W IIIDirector	Grant or award A	+1,125	–	17,934	Form 4
2025-05-14	Dunbar Webster RoyDirector	Grant or award A	+1,125	–	10,485	Form 4
2025-05-07	Drake LarisaDirector	Option exercise M	+865	–	6,188	Form 4
2025-05-07	Diaz Fred MDirector	Option exercise M	+865	–	12,132	Form 4
2025-05-07	Isbell Jeri LDirector	Option exercise M	+865	–	9,439	Form 4
2025-02-26	Black DougDirector, CEO	Option exercise M	+11,145	51.59	589,248	Form 4
2025-02-11	Versaggi ShannonEVP Mktg, Cat. Mgmt. & Pricing	Option exercise M	+225	–	6,158	Form 4
2025-02-11	Versaggi ShannonEVP Mktg, Cat. Mgmt. & Pricing	Shares withheld for tax F	−80	133.16	6,078	Form 4
2025-02-11	Black DougDirector, CEO	Option exercise M	+1,504	–	578,654	Form 4
2025-02-11	Black DougDirector, CEO	Shares withheld for tax F	−551	133.16	578,103	Form 4
2025-02-11	Brisendine L Briley JrEVP, General Counsel & Sec.	Option exercise M	+313	–	11,309	Form 4
2025-02-11	Brisendine L Briley JrEVP, General Counsel & Sec.	Shares withheld for tax F	−134	133.16	11,175	Form 4
2025-02-11	Guthrie John TEVP, CFO and Assistant Sec.	Option exercise M	+288	–	16,212	Form 4
2025-02-11	Guthrie John TEVP, CFO and Assistant Sec.	Shares withheld for tax F	−268	133.16	15,944	Form 4
2025-02-11	Ketter JosephEVP, Human Resources	Option exercise M	+238	–	13,785	Form 4
2025-02-11	Ketter JosephEVP, Human Resources	Shares withheld for tax F	−122	133.16	13,663	Form 4
2025-02-11	Salmon ScottEVP, Strategy & Development	Option exercise M	+276	–	12,580	Form 4
2025-02-11	Salmon ScottEVP, Strategy & Development	Shares withheld for tax F	−105	133.16	12,475	Form 4
2025-02-10	Black DougDirector, CEO	Option exercise M	+1,579	–	577,644	Form 4
2025-02-10	Black DougDirector, CEO	Shares withheld for tax F	−494	134.08	577,150	Form 4
2025-02-10	Brisendine L Briley JrEVP, General Counsel & Sec.	Option exercise M	+325	–	11,135	Form 4
2025-02-10	Brisendine L Briley JrEVP, General Counsel & Sec.	Shares withheld for tax F	−139	134.08	10,996	Form 4
2025-02-10	Guthrie John TEVP, CFO and Assistant Sec.	Option exercise M	+325	–	16,227	Form 4
2025-02-10	Guthrie John TEVP, CFO and Assistant Sec.	Shares withheld for tax F	−303	134.08	15,924	Form 4
2025-02-10	Ketter JosephEVP, Human Resources	Option exercise M	+255	–	13,678	Form 4
2025-02-10	Ketter JosephEVP, Human Resources	Shares withheld for tax F	−131	134.08	13,547	Form 4
2025-02-10	Salmon ScottEVP, Strategy & Development	Option exercise M	+279	–	12,411	Form 4
2025-02-10	Salmon ScottEVP, Strategy & Development	Shares withheld for tax F	−107	134.08	12,304	Form 4
2025-02-10	Versaggi ShannonEVP Mktg, Cat. Mgmt. & Pricing	Option exercise M	+232	–	6,021	Form 4
2025-02-10	Versaggi ShannonEVP Mktg, Cat. Mgmt. & Pricing	Shares withheld for tax F	−88	134.08	5,933	Form 4
2025-02-09	Versaggi ShannonEVP Mktg, Cat. Mgmt. & Pricing	Option exercise M	+335	–	5,926	Form 4
2025-02-09	Versaggi ShannonEVP Mktg, Cat. Mgmt. & Pricing	Shares withheld for tax F	−137	133.13	5,789	Form 4
2025-02-09	Salmon ScottEVP, Strategy & Development	Option exercise M	+362	–	12,288	Form 4
2025-02-09	Salmon ScottEVP, Strategy & Development	Shares withheld for tax F	−156	133.13	12,132	Form 4
2025-02-09	Ketter JosephEVP, Human Resources	Option exercise M	+335	–	13,569	Form 4
2025-02-09	Ketter JosephEVP, Human Resources	Shares withheld for tax F	−146	133.13	13,423	Form 4
2025-02-09	Guthrie John TEVP, CFO and Assistant Sec.	Option exercise M	+419	–	16,260	Form 4
2025-02-09	Guthrie John TEVP, CFO and Assistant Sec.	Shares withheld for tax F	−358	133.13	15,902	Form 4
2025-02-09	Black DougDirector, CEO	Option exercise M	+2,008	–	576,615	Form 4
2025-02-09	Black DougDirector, CEO	Shares withheld for tax F	−550	133.13	576,065	Form 4
2025-02-09	Brisendine L Briley JrEVP, General Counsel & Sec.	Option exercise M	+419	–	11,002	Form 4
2025-02-09	Brisendine L Briley JrEVP, General Counsel & Sec.	Shares withheld for tax F	−192	133.13	10,810	Form 4
2025-02-07	Versaggi ShannonEVP Mktg, Cat. Mgmt. & Pricing	Option exercise M	+516	–	5,801	Form 4
2025-02-07	Versaggi ShannonEVP Mktg, Cat. Mgmt. & Pricing	Shares withheld for tax F	−210	133.13	5,591	Form 4
2025-02-07	Salmon ScottEVP, Strategy & Development	Option exercise M	+535	–	12,157	Form 4
2025-02-07	Salmon ScottEVP, Strategy & Development	Shares withheld for tax F	−231	133.13	11,926	Form 4
2025-02-07	Ketter JosephEVP, Human Resources	Option exercise M	+516	–	13,458	Form 4
2025-02-07	Ketter JosephEVP, Human Resources	Shares withheld for tax F	−224	133.13	13,234	Form 4
2025-02-07	Guthrie John TEVP, CFO and Assistant Sec.	Option exercise M	+615	–	16,367	Form 4
2025-02-07	Guthrie John TEVP, CFO and Assistant Sec.	Shares withheld for tax F	−526	133.13	15,841	Form 4
2025-02-07	Black DougDirector, CEO	Option exercise M	+3,094	–	575,455	Form 4
2025-02-07	Black DougDirector, CEO	Shares withheld for tax F	−848	133.13	574,607	Form 4
2025-02-07	Brisendine L Briley JrEVP, General Counsel & Sec.	Option exercise M	+615	–	10,879	Form 4
2025-02-07	Brisendine L Briley JrEVP, General Counsel & Sec.	Shares withheld for tax F	−296	133.13	10,583	Form 4
2024-11-21	Ketter JosephEVP, Human Resources	Option exercise M	+6,500	12.84	19,442	Form 4
2024-11-05	Black DougDirector, CEO	Gift G	−6,000	–	572,361	Form 4

How to read it

Buy, sale: Code P and S on the form: shares bought or sold in the market, at the market price. The other codes are mostly pay (a grant, an option exercised) or tax (shares the company withheld), and say little about what the insider thinks of the price.
Plan: A sale or purchase under a Rule 10b5-1 plan, set up in advance and running on its own schedule. Since April 2023 the form has a box for it. Much executive selling is planned and says more about diversifying than about the company.
Holds after: The shares the insider still held after the trade, in the form the trade was in (directly, or indirectly through a trust or a fund).
Value: Shares times the price the form reports, which is often an average over several fills on the day.

Read from the SEC's own quarterly data sets of Forms 3, 4 and 5, and from each day's filings since the last one. A correcting amendment replaces the lines it restates. Every row links to its filing. None of this is advice: insiders sell for many reasons, and buy for fewer.

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