Latest 10-Q

What changed in Comfort Systems USA, Inc.'s latest quarterly report, compared with the one before.

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Insider trades

Open-market trades from Form 4. 10b5-1 marks a plan set in advance.Open-market buys and sales by officers, directors and 10% owners, from SEC Form 4. A plan set in advance is marked 10b5-1.

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13F holders

Funds that report this stock, checked against market prices.Fund managers with over $100 million in US-listed stocks file a 13F each quarter, up to 45 days after quarter end. Long positions only.

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Trades by members of Congress

Disclosed in dollar ranges, up to 45 days after the trade.Members of Congress, their spouses and dependent children report trades in dollar ranges, up to 45 days after the trade.

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Executive-branch trades

4 trades

Trades in Comfort Systems USA, Inc. reported by the President, Cabinet members and other senior executive-branch officials. Amounts are ranges.Form 278-T is the periodic transaction report that senior executive-branch officials file with the Office of Government Ethics. They must report each trade over $1,000 within 30 days of being notified of it, and no later than 45 days after the trade. Amounts are ranges, not exact figures.

Recent executive-branch trades
The form has no ticker column. The asset is shown as the filer wrote it. We add a ticker link only when we could match the asset to a listed company.The form asks for a range, such as $1,001 - $15,000, not an exact amount. A line can be left blank when the filer's note says the amount was not more than $1,000.Report
Donald J Trump
President of the United States
COMFORT SYS USA INC
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PurchaseMar 23, 2026$1,001 - $15,000May 8, 2026White House report ↗
Donald J Trump
President of the United States
COMFORT SYSTEMS USA INC UNSOLICITED
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PurchaseMar 12, 2026$15,001 - $50,000May 8, 2026White House report ↗
Donald J Trump
President of the United States
COMFORT SYSTEMS USA INC UNSOLICITED
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PurchaseJan 6, 2026$1,001 - $15,000May 8, 2026White House report ↗
Donald J Trump
President of the United States
Comfort Sys Usa Inc
read from scan
PurchaseJan 6, 2026$100,001 - $250,000May 8, 2026White House report ↗
All 4 trades in FIXFree to read. Amounts are ranges.

Lobbying

What Comfort Systems USA, Inc. and its lobbying firms report each quarter.A company that lobbies with its own staff reports its expenses; a lobbying firm it hires reports the income it received. We count both.

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Part of themes

Themes on 13F.ai that include FIX, and why.

A theme lists companies with something in common under a published rule. It is not a recommendation.

Institutional ownership over time

How many funds reported holding the stock at the end of each quarter, and how many shares they held between them.

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More filings and data

Each opens the table.

About the company

The basics from the company’s SEC registration.

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$1,112.50−$15.59 (−1.38%) Nov 13 close
Oct 13, 2026: $1,626.64Oct 14, 2026: $1,541.68Oct 15, 2026: $1,481.27Oct 16, 2026: $1,439.07Oct 19, 2026: $1,464.07Oct 20, 2026: $1,397.09Oct 21, 2026: $1,401.27Oct 22, 2026: $1,279.37Oct 23, 2026: $1,160.86Oct 26, 2026: $1,244.19Oct 27, 2026: $1,288.61Oct 28, 2026: $1,345.77Oct 29, 2026: $1,326.23Oct 30, 2026: $1,232.66Nov 2, 2026: $1,200.14Nov 3, 2026: $1,285.13Nov 4, 2026: $1,091.31Nov 5, 2026: $964.94Nov 6, 2026: $1,017.50Nov 9, 2026: $1,113.23Nov 10, 2026: $1,105.93Nov 11, 2026: $1,161.63Nov 12, 2026: $1,128.09Nov 13, 2026: $1,112.50
Oct 13, 2026Low $964.94 · High $1,626.64Nov 13, 2026
Aug 13, 2026: $1,727.64Aug 14, 2026: $1,774.06Aug 17, 2026: $1,881.18Aug 18, 2026: $1,739.08Aug 19, 2026: $1,696.06Aug 20, 2026: $1,672.94Aug 21, 2026: $1,655.61Aug 24, 2026: $1,609.69Aug 25, 2026: $1,561.96Aug 26, 2026: $1,615.69Aug 27, 2026: $1,614.98Aug 28, 2026: $1,518.73Aug 31, 2026: $1,545.62Sep 1, 2026: $1,554.37Sep 2, 2026: $1,560.13Sep 3, 2026: $1,580.19Sep 4, 2026: $1,610.34Sep 8, 2026: $1,648.47Sep 9, 2026: $1,615.14Sep 10, 2026: $1,590.81Sep 11, 2026: $1,690.82Sep 14, 2026: $1,582.80Sep 15, 2026: $1,576.78Sep 16, 2026: $1,587.35Sep 17, 2026: $1,573.96Sep 18, 2026: $1,651.37Sep 21, 2026: $1,632.59Sep 22, 2026: $1,625.13Sep 23, 2026: $1,625.90Sep 24, 2026: $1,643.39Sep 25, 2026: $1,658.91Sep 28, 2026: $1,658.30Sep 29, 2026: $1,665.05Sep 30, 2026: $1,654.09Oct 1, 2026: $1,685.29Oct 2, 2026: $1,728.01Oct 5, 2026: $1,713.07Oct 6, 2026: $1,817.96Oct 7, 2026: $1,741.36Oct 8, 2026: $1,706.39Oct 9, 2026: $1,715.69Oct 12, 2026: $1,638.05Oct 13, 2026: $1,626.64Oct 14, 2026: $1,541.68Oct 15, 2026: $1,481.27Oct 16, 2026: $1,439.07Oct 19, 2026: $1,464.07Oct 20, 2026: $1,397.09Oct 21, 2026: $1,401.27Oct 22, 2026: $1,279.37Oct 23, 2026: $1,160.86Oct 26, 2026: $1,244.19Oct 27, 2026: $1,288.61Oct 28, 2026: $1,345.77Oct 29, 2026: $1,326.23Oct 30, 2026: $1,232.66Nov 2, 2026: $1,200.14Nov 3, 2026: $1,285.13Nov 4, 2026: $1,091.31Nov 5, 2026: $964.94Nov 6, 2026: $1,017.50Nov 9, 2026: $1,113.23Nov 10, 2026: $1,105.93Nov 11, 2026: $1,161.63Nov 12, 2026: $1,128.09Nov 13, 2026: $1,112.50
Aug 13, 2026Low $964.94 · High $1,881.18Nov 13, 2026
Nov 13, 2025: $897.52Nov 14, 2025: $909.60Nov 17, 2025: $919.82Nov 18, 2025: $920.99Nov 19, 2025: $930.50Nov 20, 2025: $876.19Nov 21, 2025: $894.08Nov 24, 2025: $945.07Nov 25, 2025: $957.04Nov 26, 2025: $970.95Nov 28, 2025: $976.94Dec 1, 2025: $961.20Dec 2, 2025: $935.78Dec 3, 2025: $949.30Dec 4, 2025: $1,004.65Dec 5, 2025: $1,001.48Dec 8, 2025: $989.48Dec 9, 2025: $983.61Dec 10, 2025: $1,021.36Dec 11, 2025: $1,024.92Dec 12, 2025: $967.95Dec 15, 2025: $968.48Dec 16, 2025: $968.50Dec 17, 2025: $883.79Dec 18, 2025: $918.54Dec 19, 2025: $940.74Dec 22, 2025: $950.79Dec 23, 2025: $965.37Dec 24, 2025: $958.07Dec 26, 2025: $963.83Dec 29, 2025: $950.67Dec 30, 2025: $946.93Dec 31, 2025: $933.29Jan 2, 2026: $1,003.64Jan 5, 2026: $1,032.31Jan 6, 2026: $1,035.11Jan 7, 2026: $1,035.12Jan 8, 2026: $971.49Jan 9, 2026: $1,010.41Jan 12, 2026: $1,038.18Jan 13, 2026: $1,073.14Jan 14, 2026: $1,053.10Jan 15, 2026: $1,091.04Jan 16, 2026: $1,119.98Jan 20, 2026: $1,134.75Jan 21, 2026: $1,148.00Jan 22, 2026: $1,131.70Jan 23, 2026: $1,121.44Jan 26, 2026: $1,127.55Jan 27, 2026: $1,160.38Jan 28, 2026: $1,169.05Jan 29, 2026: $1,171.46Jan 30, 2026: $1,142.10Feb 2, 2026: $1,176.26Feb 3, 2026: $1,209.97Feb 4, 2026: $1,119.81Feb 5, 2026: $1,147.97Feb 6, 2026: $1,230.26Feb 9, 2026: $1,283.65Feb 10, 2026: $1,269.63Feb 11, 2026: $1,338.65Feb 12, 2026: $1,300.02Feb 13, 2026: $1,337.95Feb 17, 2026: $1,337.75Feb 18, 2026: $1,319.47Feb 19, 2026: $1,373.52Feb 20, 2026: $1,462.23Feb 23, 2026: $1,413.57Feb 24, 2026: $1,468.58Feb 25, 2026: $1,450.60Feb 26, 2026: $1,438.23Feb 27, 2026: $1,429.37Mar 2, 2026: $1,438.24Mar 3, 2026: $1,391.16Mar 4, 2026: $1,430.38Mar 5, 2026: $1,348.22Mar 6, 2026: $1,279.06Mar 9, 2026: $1,372.40Mar 10, 2026: $1,383.62Mar 11, 2026: $1,407.32Mar 12, 2026: $1,373.76Mar 13, 2026: $1,365.34Mar 16, 2026: $1,414.10Mar 17, 2026: $1,424.46Mar 18, 2026: $1,423.00Mar 19, 2026: $1,444.60Mar 20, 2026: $1,356.75Mar 23, 2026: $1,408.25Mar 24, 2026: $1,461.52Mar 25, 2026: $1,470.64Mar 26, 2026: $1,358.66Mar 27, 2026: $1,366.77Mar 30, 2026: $1,273.18Mar 31, 2026: $1,378.99Apr 1, 2026: $1,428.52Apr 2, 2026: $1,417.19Apr 6, 2026: $1,434.09Apr 7, 2026: $1,424.91Apr 8, 2026: $1,525.16Apr 9, 2026: $1,574.45Apr 10, 2026: $1,592.84Apr 13, 2026: $1,627.81Apr 14, 2026: $1,650.48Apr 15, 2026: $1,648.96Apr 16, 2026: $1,605.97Apr 17, 2026: $1,650.47Apr 20, 2026: $1,680.09Apr 21, 2026: $1,674.16Apr 22, 2026: $1,724.49Apr 23, 2026: $1,773.91Apr 24, 2026: $1,726.12Apr 27, 2026: $1,794.04Apr 28, 2026: $1,719.21Apr 29, 2026: $1,724.14Apr 30, 2026: $1,840.25May 1, 2026: $1,867.02May 4, 2026: $1,891.95May 5, 2026: $1,967.24May 6, 2026: $2,011.49May 7, 2026: $1,942.02May 8, 2026: $1,952.37May 11, 2026: $2,032.98May 12, 2026: $2,016.31May 13, 2026: $2,034.63May 14, 2026: $2,042.36May 15, 2026: $1,992.74May 18, 2026: $1,854.43May 19, 2026: $1,825.50May 20, 2026: $1,835.51May 21, 2026: $1,835.33May 22, 2026: $1,828.25May 26, 2026: $1,883.56May 27, 2026: $1,867.09May 28, 2026: $1,855.15May 29, 2026: $1,828.21Jun 1, 2026: $1,787.88Jun 2, 2026: $1,883.26Jun 3, 2026: $1,850.04Jun 4, 2026: $1,914.65Jun 5, 2026: $1,843.94Jun 8, 2026: $1,852.03Jun 9, 2026: $1,831.56Jun 10, 2026: $1,719.48Jun 11, 2026: $1,843.42Jun 12, 2026: $1,877.61Jun 15, 2026: $1,952.02Jun 16, 2026: $1,913.94Jun 17, 2026: $1,931.77Jun 18, 2026: $1,967.41Jun 22, 2026: $2,066.51Jun 23, 2026: $1,908.07Jun 24, 2026: $1,954.47Jun 25, 2026: $2,017.57Jun 26, 2026: $1,854.23Jun 29, 2026: $1,948.69Jun 30, 2026: $1,981.95Jul 1, 2026: $1,865.15Jul 2, 2026: $1,741.30Jul 6, 2026: $1,793.03Jul 7, 2026: $1,683.44Jul 8, 2026: $1,684.94Jul 9, 2026: $1,781.42Jul 10, 2026: $1,756.09Jul 13, 2026: $1,732.03Jul 14, 2026: $1,775.10Jul 15, 2026: $1,736.70Jul 16, 2026: $1,680.60Jul 17, 2026: $1,674.06Jul 20, 2026: $1,712.18Jul 21, 2026: $1,773.51Jul 22, 2026: $1,791.06Jul 23, 2026: $1,831.15Jul 24, 2026: $1,733.60Jul 27, 2026: $1,730.42Jul 28, 2026: $1,626.32Jul 29, 2026: $1,519.96Jul 30, 2026: $1,697.84Jul 31, 2026: $1,729.69Aug 3, 2026: $1,770.96Aug 4, 2026: $1,775.86Aug 5, 2026: $1,737.00Aug 6, 2026: $1,713.60Aug 7, 2026: $1,694.55Aug 10, 2026: $1,674.84Aug 11, 2026: $1,688.05Aug 12, 2026: $1,738.82Aug 13, 2026: $1,727.64Aug 14, 2026: $1,774.06Aug 17, 2026: $1,881.18Aug 18, 2026: $1,739.08Aug 19, 2026: $1,696.06Aug 20, 2026: $1,672.94Aug 21, 2026: $1,655.61Aug 24, 2026: $1,609.69Aug 25, 2026: $1,561.96Aug 26, 2026: $1,615.69Aug 27, 2026: $1,614.98Aug 28, 2026: $1,518.73Aug 31, 2026: $1,545.62Sep 1, 2026: $1,554.37Sep 2, 2026: $1,560.13Sep 3, 2026: $1,580.19Sep 4, 2026: $1,610.34Sep 8, 2026: $1,648.47Sep 9, 2026: $1,615.14Sep 10, 2026: $1,590.81Sep 11, 2026: $1,690.82Sep 14, 2026: $1,582.80Sep 15, 2026: $1,576.78Sep 16, 2026: $1,587.35Sep 17, 2026: $1,573.96Sep 18, 2026: $1,651.37Sep 21, 2026: $1,632.59Sep 22, 2026: $1,625.13Sep 23, 2026: $1,625.90Sep 24, 2026: $1,643.39Sep 25, 2026: $1,658.91Sep 28, 2026: $1,658.30Sep 29, 2026: $1,665.05Sep 30, 2026: $1,654.09Oct 1, 2026: $1,685.29Oct 2, 2026: $1,728.01Oct 5, 2026: $1,713.07Oct 6, 2026: $1,817.96Oct 7, 2026: $1,741.36Oct 8, 2026: $1,706.39Oct 9, 2026: $1,715.69Oct 12, 2026: $1,638.05Oct 13, 2026: $1,626.64Oct 14, 2026: $1,541.68Oct 15, 2026: $1,481.27Oct 16, 2026: $1,439.07Oct 19, 2026: $1,464.07Oct 20, 2026: $1,397.09Oct 21, 2026: $1,401.27Oct 22, 2026: $1,279.37Oct 23, 2026: $1,160.86Oct 26, 2026: $1,244.19Oct 27, 2026: $1,288.61Oct 28, 2026: $1,345.77Oct 29, 2026: $1,326.23Oct 30, 2026: $1,232.66Nov 2, 2026: $1,200.14Nov 3, 2026: $1,285.13Nov 4, 2026: $1,091.31Nov 5, 2026: $964.94Nov 6, 2026: $1,017.50Nov 9, 2026: $1,113.23Nov 10, 2026: $1,105.93Nov 11, 2026: $1,161.63Nov 12, 2026: $1,128.09Nov 13, 2026: $1,112.50
Nov 13, 2025Low $876.19 · High $2,066.51Nov 13, 2026
Congress purchase Congress sale Insider sale over $1M

Adjusted for stock splits; not for dividends. Where prices come from.

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