Mister Car Wash, Inc.
Mister Car Wash, Inc. (MCW) Stock Ownership
Institutional vs insider vs public ownership from 13F and float data — top holders, activity, and insider trades below.
SEC 13F · FMP · MCW · as of Sep 30, 2025
Ownership Breakdown
217
Institutional Holders
▼ 3 vs Q2
$1.78B
Total Inst. Value
▼ $237.08M vs Q2
328.89M
Shares Outstanding
freeFloat 31.02%
334.24M
13F Shares Held
▼ 1.59M vs Q2
Institutional ownership = 13F shares ÷ total outstanding. Insider % = 100 − free float. Public % = free float − institution %. Data: FMP /symbol-positions-summary + /shares-float + SEC EDGAR.
Top Institutional Holders
MCW largest shareholders · institutional ownership
Q3 2025 · SEC 13F
Showing top 10 holders
| Holder | Shares | % Owned | Weight | Value | Reported | Change |
|---|---|---|---|---|---|---|
LEONARD GREEN & PARTNERS, L.P. services-automotive repair, services & parking | 219.21M | 67.47% | 67.47% | $1.17T | Nov 14, 2025 | — held |
GREENHOUSE FUNDS LLLP services-automotive repair, services & parking | 16.86M | 5.19% | 5.19% | $89.88B | Nov 13, 2025 | ▲ 1.44M |
BLACKROCK, INC. services-automotive repair, services & parking | 14.25M | 4.39% | 4.39% | $75.95B | Nov 12, 2025 | ▲ 32.2K |
BROWN ADVISORY INC services-automotive repair, services & parking | 13.03M | 4.01% | 4.01% | $69.44B | Nov 14, 2025 | ▲ 164.6K |
VANGUARD GROUP INC services-automotive repair, services & parking | 10.57M | 3.25% | 3.25% | $56.31B | Nov 7, 2025 | ▼ 148.5K |
FIL LTD services-automotive repair, services & parking | 8.20M | 2.52% | 2.52% | $43.71B | Nov 13, 2025 | ▼ 632.2K |
MANUFACTURERS LIFE INSURANCE COMPANY, THE services-automotive repair, services & parking | 6.59M | 2.03% | 2.03% | $35.15B | Nov 14, 2025 | ▲ 427.7K |
DIMENSIONAL FUND ADVISORS LP services-automotive repair, services & parking | 6.05M | 1.86% | 1.86% | $32.24B | Nov 12, 2025 | ▲ 716.8K |
STATE STREET CORP services-automotive repair, services & parking | 3.54M | 1.09% | 1.09% | $18.88B | Nov 14, 2025 | ▲ 85.8K |
MILLENNIUM MANAGEMENT LLC services-automotive repair, services & parking | 2.64M | 81.32% | 81.32% | $14.08B | Nov 14, 2025 | ▲ 579.2K |
Data from SEC Form 13F filings. Ownership bar normalised to largest holder. Change flags: isNew / isSoldOut / changeInSharesNumber (FMP extract-analytics/holder).
Institutional Activity
Q3 2025 vs prior quarter
Q3 2025
33
Increased
+7.94M shares3
New Positions
first time holders11
Decreased
−1.75M shares0
Sold Out
fully exitedNet shares change (top 50)
+6.19M
+7.94M / −1.75M
Net new holders
+25
3 new / 0 exited
Based on top 50 institutional holders by position size. Fields: isNew, isSoldOut, changeInSharesNumber (FMP extract-analytics/holder, limit=50).
Insider Buying vs Selling
MCW insider trading · insider activity
Source: SEC Form 4
11
Buy transactions
36
Sell transactions
0.31
Buy/Sell ratio
$887M
Total disposed
Recent Insider Transactions
Showing 10 most recent · Common Stock only
| Name · Role | Date | Type | Shares | Price | Value | After Trans. | Filing |
|---|---|---|---|---|---|---|---|
SEIFFER JONATHAN A
| May 19, 2026 | J-Other | 219,213,079 | $7.00 | $1.53B | 0 | Form 4 ↗ |
Suer Jeffrey
| May 19, 2026 | J-Other | 219,213,079 | $7.00 | $1.53B | 0 | Form 4 ↗ |
Gold Jedidiah Marc Chief Financial Officer | May 19, 2026 | J-Other | 43,285.71 | $7.00 | $303.0K | 176.3K | Form 4 ↗ |
Gold Jedidiah Marc Chief Financial Officer | May 19, 2026 | D-Return | 176,278.29 | — | — | 0 | Form 4 ↗ |
Gold Jedidiah Marc Chief Financial Officer | May 19, 2026 | D-Return | 709,728 | $2.12 | $1.50M | 0 | Form 4 ↗ |
Porter Mary Lyn Chief People Officer | May 19, 2026 | J-Other | 15,142.86 | $7.00 | $106.0K | 51.7K | Form 4 ↗ |
Porter Mary Lyn Chief People Officer | May 19, 2026 | D-Return | 51,685.14 | — | — | 0 | Form 4 ↗ |
Lai John Lo-minn Chief Executive Officer | May 19, 2026 | J-Other | 745,178.57 | $7.00 | $5.22M | 4.53M | Form 4 ↗ |
Lai John Lo-minn Chief Executive Officer | May 19, 2026 | J-Other | 401,250 | $7.00 | $2.81M | 2.10M | Form 4 ↗ |
Lai John Lo-minn Chief Executive Officer | May 19, 2026 | D-Return | 2,097,080 | — | — | 0 | Form 4 ↗ |
Source: /insider-trading/search (FMP stable). Buy/Sell direction: acquisitionOrDisposition A=Buy, D=Sell. RSU vesting (M-Exempt) excluded from sentiment bar. All data from SEC EDGAR public filings.
About institutional & insider ownership
Mister Car Wash, Inc. (MCW) is primarily owned by institutional investors, who hold approximately 100.0% of total shares outstanding. Company insiders own approximately 68.98%, while retail and public investors account for the remaining 0.00%.
The largest institutional shareholder of Mister Car Wash, Inc. is LEONARD GREEN & PARTNERS, L.P., holding approximately 219.21 million shares — equal to 67.47% of outstanding shares — as of September 30, 2025.
A total of 217 institutional investors currently hold MCW stock, with a combined institutional value of approximately $1.78 billion as of the most recent 13F filing period.
Frequently asked questions
MCW ownershipMister Car Wash, Inc. (MCW) is primarily owned by institutional investors, who hold approximately 100.0% of shares. The largest shareholder is LEONARD GREEN & PARTNERS, L.P. with a 67.47% stake. Company insiders hold 68.98%. Data sourced from SEC Form 13F as of September 30, 2025.