$MAS

$75.17 -$0.34 (0.45%) Close

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

Ownership

13F as of Q2 2026 · 192.8M shares outstanding

Who owns MAS?

By type of holder

Institutions 100.0% Insiders 0.0% Everyone else 0.0%

Concentration Top 10 holders own 44.0%

BlackRock, Inc. 8.2% · Vanguard Capital Management LLC 6.8%

Institutional ownership

100.0%

0 pts vs last qtr

Institutional holders

918

+79 vs last qtr

Net shares bought

+1.1M

by institutions in Q2 2026

New / sold out

151 / 72

positions opened vs closed

How is ownership changing?

Institutions, last 8 quarters

Biggest buyers in Q2 2026

Norges Bank NEW +2.2M
Aqr Capital Management LLC +1.3M

Biggest sellers in Q2 2026

Jacobs Levy Equity Management, Inc −2.3M
Nordea Investment Management AB −1.4M

Who is planning to sell?

Notices of proposed sale, last 12 months

$7.37M

6 notices from 4 people

Shares covered

95.5K

0.05% of the company

Arranged in advance

of the value is under a 10b5-1 plan

Under a 10b5-1 plan No plan

Largest proposed sellers

Cole Kenneth G. Officer $4M
Straber Renee Officer $2.86M

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, FY2016–FY2025

−36.4%

−4.90% a year

Each share's claim on the business

+57.1%

grew without buying or selling a share

Spent on buybacks vs paid in stock

$6.68B vs $384M

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+ years74% 3–5 years12% 1–3 years8% Under 1 year7%

Quarterly turnover

9.2%

of institutional shares changed hands

Top 10 managers, median time held

5 years

Super Investors

Investment managers reporting MAS on Form 13F

Holder	Shares	% of company	Change vs last qtr	Held since	% of their book
B BlackRock, Inc.	15.7M	8.15%	+99.1K (+0.6%)	≤2021	0.0%
Shares held by quarter Peak holding16.5M (Q4'25) Change over 8 quarters−362.5K Share of the company8.150% BlackRock, Inc.'s full portfolio →
VC Vanguard Capital Management LLC	13.2M	6.84%	−44.8K (−0.3%)	≤2021	0.0%
Shares held by quarter Peak holding13.2M (Q1'26) Change over 8 quarters+13.2M Share of the company6.840% Vanguard Capital Management LLC's full portfolio →

BlackRock, Inc.

15.7M

% of company

8.15%

Change vs last qtr

+99.1K (+0.6%)

Held since

≤2021

Vanguard Capital Management LLC

13.2M

% of company

6.84%

Change vs last qtr

−44.8K (−0.3%)

Held since

≤2021

28 more super investors behind a free account

See every manager holding Masco Corporation, how their position has changed, and how long they've held it.

Institutional Funds

Mutual funds and ETFs reporting MAS on Form N-PORT; together they hold 46.6% of the company

Fund	Position value	Shares	% of company	% of the fund	As of
VT Vanguard Total Stock Market Index Fund Vanguard Index Funds	$521M	6.4M	3.32%	0.02%	June 30, 2026
V5 Vanguard 500 Index Fund Vanguard Index Funds	$425M	5.2M	2.71%	0.03%	June 30, 2026

Vanguard Total Stock Market Index Fund

Vanguard Index Funds

Position value

$521M

% of company

3.32%

% of the fund

0.02%

As of

June 30, 2026

Vanguard 500 Index Fund

Vanguard Index Funds

Position value

$425M

% of company

2.71%

% of the fund

0.03%

As of

June 30, 2026

23 more funds behind a free account

See every fund holding Masco Corporation 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
AK Allman Keith J. Insider	160.9K	0.08%	—	—	—	—
Insider holdings come from Form 3/4/5 filings, which are not quarterly. Share of the company0.080% Allman Keith J.'s insider activity →
OC O'Herlihy Christopher A Insider	51.8K	0.03%	—	—	—	—
Insider holdings come from Form 3/4/5 filings, which are not quarterly. Share of the company0.030% O'Herlihy Christopher A's insider activity →

Allman Keith J.

Insider

160.9K

% of company

0.08%

Change vs last qtr

—

Held since

—

O'Herlihy Christopher A

Insider

51.8K

% of company

0.03%

Change vs last qtr

—

Held since

—

17 more holders behind a free account

See every insider and 5%+ holder of Masco Corporation.

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