$SITE

$101.51 -$1.65 (1.6%) Close

$SITE Overview Financial Statements SEC Filings Executives News Red Flags Capital Raising Ownership Insider Transactions Congressional Trades

Ownership

13F as of Q2 2026 · 43.7M shares outstanding

Who owns SITE?

By type of holder

Institutions 100.0% Insiders 0.0% Everyone else 0.0%

Concentration Top 10 holders own 46.8%

Price T Rowe Associates Inc /MD/ 10.3% · Kayne Anderson Rudnick Investment Management LLC 4.7%

Institutional ownership

100.0%

0 pts vs last qtr

Institutional holders

392

-31 vs last qtr

Net shares bought

−2.0M

by institutions in Q2 2026

New / sold out

66 / 97

positions opened vs closed

How is ownership changing?

Institutions, last 8 quarters

Biggest buyers in Q2 2026

59 North Capital Management, LP +1.0M
Jupiter Topco LLC NEW +520.2K

Biggest sellers in Q2 2026

Aqr Capital Management LLC −1.0M
Wasatch Advisors LP −851.8K

Who is planning to sell?

Notices of proposed sale, last 12 months

$665K

4 notices from 3 people

Shares covered

4.8K

0.01% of the company

Arranged in advance

19%

of the value is under a 10b5-1 plan

Under a 10b5-1 plan No plan

Largest proposed sellers

Elema Eric J Officer $279K
Guthrie John T Officer $258K

Every notice on Red Flags →

A Form 144 is notice of a planned sale, not the sale itself. What insiders actually sold is on Insider Transactions.

Is your stake being diluted?

Diluted share count, FY2014–FY2025

+226.3%

+14.04% a year

Each share's claim on the business

−69.3%

shrank without buying or selling a share

Spent on buybacks vs paid in stock

$162M vs $133M

over 10 fiscal years

Diluted shares, split-adjusted

Buybacks Stock-based comp

How patient are the owners?

Institutional shares by how long they've been held

5+ years63% 3–5 years7% 1–3 years11% Under 1 year18%

Quarterly turnover

16.9%

of institutional shares changed hands

Top 10 managers, median time held

5 years

Super Investors

Investment managers reporting SITE on Form 13F

Holder	Shares	% of company	Change vs last qtr	Held since	% of their book
PT Price T Rowe Associates Inc /MD/	4.5M	10.25%	−39.6K (−0.9%)	≤2021	0.1%
Shares held by quarter Peak holding6.1M (Q1'25) Change over 8 quarters−1.2M Share of the company10.250% Price T Rowe Associates Inc /MD/'s full portfolio →
KA Kayne Anderson Rudnick Investment Management LLC	2.0M	4.69%	−438.6K (−17.6%)	≤2021	0.7%
Shares held by quarter Peak holding3.4M (Q3'24) Change over 8 quarters−1.4M Share of the company4.690% Kayne Anderson Rudnick Investment Management LLC's full portfolio →

Price T Rowe Associates Inc /MD/

4.5M

% of company

10.25%

Change vs last qtr

−39.6K (−0.9%)

Held since

≤2021

Kayne Anderson Rudnick Investment Management LLC

2.0M

% of company

4.69%

Change vs last qtr

−438.6K (−17.6%)

Held since

≤2021

28 more super investors behind a free account

See every manager holding SiteOne Landscape Supply Inc, how their position has changed, and how long they've held it.

Institutional Funds

Mutual funds and ETFs reporting SITE on Form N-PORT; together they hold 47.7% of the company

Fund	Position value	Shares	% of company	% of the fund	As of
VT Vanguard Total Stock Market Index Fund Vanguard Index Funds	$161M	1.4M	3.23%	0.01%	June 30, 2026
TR T. Rowe Price New Horizons Fund, Inc. T. Rowe Price New Horizons Fund, Inc.	$151M	1.3M	3.03%	1.03%	June 30, 2026

Vanguard Total Stock Market Index Fund

Vanguard Index Funds

Position value

$161M

% of company

3.23%

% of the fund

0.01%

As of

June 30, 2026

T. Rowe Price New Horizons Fund, Inc.

Position value

$151M

% of company

3.03%

% of the fund

1.03%

As of

June 30, 2026

23 more funds behind a free account

See every fund holding SiteOne Landscape Supply Inc and how much of the fund the position is.

Insiders and 5%+ holders

From Forms 3/4/5 and Schedules 13D/G

Holder	Shares	% of company	Change vs last qtr	8 quarters	Held since	% of their book
BD Black Doug Insider	616.0K	1.41%	—	—	—	—
Insider holdings come from Form 3/4/5 filings, which are not quarterly. Share of the company1.410% Black Doug's insider activity →
WJ Wyszomierski Jack L Insider	19.1K	0.04%	—	—	—	—
Insider holdings come from Form 3/4/5 filings, which are not quarterly. Share of the company0.040% Wyszomierski Jack L's insider activity →

Black Doug

Insider

616.0K

% of company

1.41%

Change vs last qtr

—

Held since

—

Wyszomierski Jack L

Insider

19.1K

% of company

0.04%

Change vs last qtr

—

Held since

—

14 more holders behind a free account

See every insider and 5%+ holder of SiteOne Landscape Supply Inc.

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