The Filings Report

Comfort Systems USA, Inc. insider trading

FIXfinancial statementsForm 4 filings on EDGAR163 transactions since Nov 3, 2024

From August 6, 2026 to November 3, 2026, 0 insiders at Comfort Systems USA, Inc. bought $0 of stock in the open market, and 3 sold $43M. Officers and directors accounted for $0 of purchases and $43M of sales. The last reported transaction was an open-market sale by Lane Brian E. on August 26, 2026.

The answer card and chart use the same period. Change the range above the chart to update both. Form 4 filings through August 27, 2026; awards, option exercises, tax withholding and gifts are excluded from these totals.

Stock price and insider activity

Daily price candles with insider purchases and sales directly beneath them on the same timeline. Bars show individual days; totals sum all days in the selected period.

FIX daily priceSplit-adjusted prices in US dollars

Bought $0Sold $43MAug 6, 2026 – Nov 3, 2026

Nov 3, 2026O $1229.00 · H $1289.96 · L $1222.50 · C $1285.13Bought $0 (0)Sold $0 (0)
$1065$1281$1497$1714$19302026-08-06: open $1721.11, high $1773.24, low $1700.78, close $1712.782026-08-07: open $1760.75, high $1769.00, low $1659.28, close $1694.552026-08-10: open $1707.89, high $1726.00, low $1672.79, close $1674.842026-08-11: open $1700.00, high $1725.10, low $1684.05, close $1688.052026-08-12: open $1770.00, high $1792.62, low $1736.69, close $1738.822026-08-13: open $1743.21, high $1759.16, low $1710.02, close $1726.402026-08-14: open $1732.00, high $1797.00, low $1725.00, close $1774.192026-08-17: open $1796.00, high $1883.70, low $1795.10, close $1881.182026-08-18: open $1806.16, high $1815.07, low $1720.77, close $1739.082026-08-19: open $1750.87, high $1750.87, low $1631.50, close $1696.062026-08-20: open $1679.17, high $1707.41, low $1656.15, close $1672.942026-08-21: open $1690.00, high $1711.30, low $1633.79, close $1655.612026-08-24: open $1630.00, high $1634.94, low $1578.34, close $1609.692026-08-25: open $1664.28, high $1664.28, low $1553.52, close $1561.962026-08-26: open $1565.22, high $1621.74, low $1561.96, close $1615.692026-08-27: open $1652.94, high $1652.94, low $1590.08, close $1614.982026-08-28: open $1602.10, high $1611.01, low $1515.30, close $1518.792026-08-31: open $1515.25, high $1549.31, low $1505.73, close $1545.622026-09-01: open $1518.73, high $1557.27, low $1511.91, close $1554.372026-09-02: open $1553.00, high $1562.00, low $1521.47, close $1560.132026-09-03: open $1555.65, high $1609.44, low $1539.11, close $1580.192026-09-04: open $1598.16, high $1634.88, low $1590.00, close $1610.342026-09-08: open $1639.00, high $1658.11, low $1612.01, close $1648.472026-09-09: open $1645.99, high $1670.42, low $1609.10, close $1615.142026-09-10: open $1589.00, high $1629.97, low $1578.56, close $1590.812026-09-11: open $1630.77, high $1695.57, low $1611.21, close $1690.042026-09-14: open $1562.22, high $1612.94, low $1545.21, close $1582.802026-09-15: open $1625.31, high $1630.19, low $1567.36, close $1576.782026-09-16: open $1610.68, high $1624.46, low $1572.24, close $1587.352026-09-17: open $1639.27, high $1649.98, low $1570.00, close $1573.962026-09-18: open $1592.80, high $1659.36, low $1581.00, close $1651.372026-09-21: open $1667.72, high $1667.72, low $1606.12, close $1632.592026-09-22: open $1605.00, high $1633.50, low $1596.31, close $1624.092026-09-23: open $1626.80, high $1637.00, low $1604.65, close $1625.902026-09-24: open $1580.00, high $1663.59, low $1571.01, close $1643.392026-09-25: open $1656.27, high $1671.64, low $1625.01, close $1658.912026-09-28: open $1655.82, high $1689.28, low $1628.00, close $1658.302026-09-29: open $1681.64, high $1712.60, low $1642.64, close $1665.052026-09-30: open $1677.78, high $1677.78, low $1640.32, close $1654.092026-10-01: open $1658.00, high $1688.55, low $1624.77, close $1685.292026-10-02: open $1714.05, high $1750.39, low $1706.44, close $1729.532026-10-05: open $1723.93, high $1738.43, low $1690.00, close $1713.072026-10-06: open $1725.00, high $1835.04, low $1720.00, close $1817.962026-10-07: open $1770.01, high $1782.21, low $1698.34, close $1741.362026-10-08: open $1716.32, high $1742.16, low $1655.17, close $1706.392026-10-09: open $1715.60, high $1737.00, low $1691.08, close $1715.692026-10-12: open $1700.11, high $1710.00, low $1631.99, close $1638.052026-10-13: open $1600.00, high $1630.76, low $1558.14, close $1626.642026-10-14: open $1606.03, high $1623.28, low $1513.85, close $1541.682026-10-15: open $1477.31, high $1496.39, low $1389.32, close $1481.272026-10-16: open $1477.01, high $1485.00, low $1431.64, close $1439.072026-10-19: open $1486.49, high $1498.38, low $1452.05, close $1464.072026-10-20: open $1419.58, high $1442.00, low $1382.15, close $1397.092026-10-21: open $1434.33, high $1450.00, low $1390.00, close $1401.272026-10-22: open $1357.50, high $1358.73, low $1260.81, close $1276.012026-10-23: open $1211.80, high $1212.52, low $1111.11, close $1160.862026-10-26: open $1175.01, high $1265.80, low $1173.77, close $1244.192026-10-27: open $1261.40, high $1291.26, low $1242.41, close $1288.612026-10-28: open $1335.00, high $1356.08, low $1290.57, close $1345.772026-10-29: open $1329.60, high $1385.99, low $1308.04, close $1326.232026-10-30: open $1237.83, high $1294.15, low $1216.05, close $1232.662026-11-02: open $1250.23, high $1258.90, low $1191.79, close $1200.142026-11-03: open $1229.00, high $1289.96, low $1222.50, close $1285.13Insider purchases / sales · USD$50M$0−$50M2026-08-10: 0 purchases ($0), 1 sales ($6M)2026-08-11: 0 purchases ($0), 1 sales ($7M)2026-08-17: 0 purchases ($0), 1 sales ($5M)2026-08-26: 0 purchases ($0), 1 sales ($26M)Aug 6Aug 28Sep 21Oct 13Nov 3

purchases above zero; sales below. Both use the transaction date and the same dollar scale. Hover, tap, or use arrow keys to inspect a date. Awards, exercises, tax withholding and gifts are excluded.

Dates with prices or insider activity are spaced evenly; empty weekends and holidays are omitted. Prices through Nov 3, 2026. Insider data through Nov 3, 2026. Prices are adjusted for splits; transaction values are reported dollars.

Every transaction

163 transactions from November 3, 2024 to November 3, 2026, newest first. Open-market purchases and sales are coloured; awards, exercises, tax withholding and gifts are grey and not counted.

TradedInsiderRoleTransactionSharesPriceValueHeld afterFiled
Aug 26, 2026Lane Brian E.CHIEF EXECUTIVE OFF., Directoropen-market sale16,024$1608.21$26M145,065Aug 27, 2026
Aug 17, 2026George William IIICHIEF FINANCIAL OFFICERopen-market sale2,554$1859.65$5M30,250Aug 18, 2026
Aug 11, 2026Myers FranklinDirectoropen-market saleindirect4,000$1693.92$7M8,495Aug 12, 2026
Aug 10, 2026Myers FranklinDirectoropen-market sale3,500$1690.47$6M58,615Aug 12, 2026
Jun 24, 2026Myers FranklinDirectoropen-market sale6,700$1954.47$13M62,115Jun 26, 2026
May 27, 2026Hardy Rhoman JDirectoropen-market sale342$1900.08$650K1,890May 28, 2026
May 21, 2026Myers FranklinDirectorgift273$0.00—68,815May 22, 2026
May 18, 2026Anderson DarcyDirectoraward105$0.00—18,140May 19, 2026
May 18, 2026Myers FranklinDirectoraward105$0.00—69,088May 19, 2026
May 18, 2026Bulls Herman EDirectoraward105$0.00—29,879May 19, 2026
May 18, 2026Hardy Rhoman JDirectoraward105$0.00—2,232May 19, 2026
May 18, 2026Kapoor GauravDirectorawardindirect105$0.00—832May 19, 2026
May 18, 2026Mercado, Pablo G.Directoraward105$0.00—3,105May 19, 2026
May 18, 2026Sandbrook William JDirectoraward105$0.00—7,771May 19, 2026
May 18, 2026Skidmore Constance EllenDirectoraward105$0.00—12,732May 19, 2026
May 18, 2026Wallis-Lage Cindy L.Directorawardindirect105$0.00—5,818May 19, 2026
May 11, 2026George William IIICHIEF FINANCIAL OFFICERopen-market sale1,000$2020.96$2M32,804May 12, 2026
May 11, 2026Shaeff JulieCHIEF ACCOUNTING OFFICERopen-market sale1,123$2000.37$2M12,624May 11, 2026
May 8, 2026George William IIICHIEF FINANCIAL OFFICERopen-market sale4,000$1948.17$8M33,804May 12, 2026
May 7, 2026Myers FranklinDirectorgift51$0.00—73,944May 8, 2026
May 7, 2026Myers FranklinDirectorgift205$0.00—73,739May 8, 2026
May 7, 2026Myers FranklinDirectorgift256$0.00—73,483May 8, 2026
May 7, 2026Myers FranklinDirectoropen-market sale4,500$1902.57$9M68,983May 8, 2026
May 5, 2026Lane Brian E.CHIEF EXECUTIVE OFF., Directoropen-market sale11,113$1969.84$22M161,089May 6, 2026
Apr 30, 2026Mercado, Pablo G.Directoropen-market sale500$1779.78$890K3,000May 1, 2026
Apr 29, 2026Sandbrook William JDirectoropen-market sale1,500$1732.67$3M7,666Apr 30, 2026
Apr 1, 2026Eslicker Rachel R.SVP & GENERAL COUNSELtax withholding31$1429.60$44K676Apr 3, 2026
Apr 1, 2026Eslicker Rachel R.SVP & GENERAL COUNSELtax withholding25$1429.60$36K651Apr 3, 2026
Apr 1, 2026Eslicker Rachel R.SVP & GENERAL COUNSELtax withholding43$1429.60$61K608Apr 3, 2026
Apr 1, 2026Shaeff JulieCHIEF ACCOUNTING OFFICERtax withholding87$1429.60$124K13,979Apr 3, 2026
Apr 1, 2026Shaeff JulieCHIEF ACCOUNTING OFFICERtax withholding87$1429.60$124K13,892Apr 3, 2026
Apr 1, 2026Shaeff JulieCHIEF ACCOUNTING OFFICERtax withholding145$1429.60$207K13,747Apr 3, 2026
Apr 1, 2026Reed TerrenceSVP & CHROtax withholding98$1429.60$140K3,143Apr 3, 2026
Apr 1, 2026Reed TerrenceSVP & CHROtax withholding82$1429.60$117K3,061Apr 3, 2026
Apr 1, 2026Reed TerrenceSVP & CHROtax withholding93$1429.60$133K2,968Apr 3, 2026
Apr 1, 2026George William IIICHIEF FINANCIAL OFFICERtax withholding284$1429.60$406K38,601Apr 3, 2026
Apr 1, 2026George William IIICHIEF FINANCIAL OFFICERtax withholding297$1429.60$425K38,304Apr 3, 2026
Apr 1, 2026George William IIICHIEF FINANCIAL OFFICERtax withholding500$1429.60$715K37,804Apr 3, 2026
Apr 1, 2026Trent T McKennaPRESIDENT/CHIEF OPERATING OFF.tax withholding266$1429.60$380K22,897Apr 3, 2026
Apr 1, 2026Trent T McKennaPRESIDENT/CHIEF OPERATING OFF.tax withholding210$1429.60$300K22,687Apr 3, 2026
Apr 1, 2026Trent T McKennaPRESIDENT/CHIEF OPERATING OFF.tax withholding341$1429.60$487K22,346Apr 3, 2026
Apr 1, 2026Lane Brian E.CHIEF EXECUTIVE OFF., Directortax withholding1,146$1429.60$2M174,655Apr 3, 2026
Apr 1, 2026Lane Brian E.CHIEF EXECUTIVE OFF., Directortax withholding941$1429.60$1M173,714Apr 3, 2026
Apr 1, 2026Lane Brian E.CHIEF EXECUTIVE OFF., Directortax withholding1,512$1429.60$2M172,202Apr 3, 2026
Mar 23, 2026Shaeff JulieCHIEF ACCOUNTING OFFICERtax withholding84$1408.25$118K14,066Mar 25, 2026
Mar 23, 2026Shaeff JulieCHIEF ACCOUNTING OFFICERaward220$0.00—14,150Mar 25, 2026
Mar 23, 2026Shaeff JulieCHIEF ACCOUNTING OFFICERaward194$0.00—13,930Mar 25, 2026
Mar 23, 2026George William IIICHIEF FINANCIAL OFFICERtax withholding300$1408.25$422K38,885Mar 25, 2026
Mar 23, 2026George William IIICHIEF FINANCIAL OFFICERaward764$0.00—39,185Mar 25, 2026
Mar 23, 2026George William IIICHIEF FINANCIAL OFFICERaward597$0.00—38,421Mar 25, 2026

Who the insiders are

Everyone who reported a transaction since November 3, 2024, by open-market value over twelve months. Shares held are after the insider’s latest directly held transaction.

InsiderRoleLast transactionKindShares heldBought, 12 monthsSold, 12 monthsSales under a plan
Lane Brian E.CHIEF EXECUTIVE OFF., DirectorAug 26, 2026open-market sale145,065—$68M (4)0 of 4
Myers FranklinDirectorAug 11, 2026open-market sale58,615—$47M (5)0 of 5
George William IIICHIEF FINANCIAL OFFICERAug 17, 2026open-market sale30,250—$32M (5)0 of 5
Sandbrook William JDirectorMay 18, 2026award7,771—$6M (2)0 of 2
Anderson DarcyDirectorMay 18, 2026award18,140—$6M (1)0 of 1
Shaeff JulieCHIEF ACCOUNTING OFFICERMay 11, 2026open-market sale12,624—$5M (2)0 of 2
Reed TerrenceSVP & CHROApr 1, 2026tax withholding3,143—$3M (2)0 of 2
Mercado, Pablo G.DirectorMay 18, 2026award3,105—$2M (2)0 of 2
Skidmore Constance EllenDirectorMay 18, 2026award12,732—$1M (1)0 of 1
Howell Laura FinleySVP & GENERAL COUNSELDec 4, 2025open-market sale7,938—$996K (1)0 of 1
Hardy Rhoman JDirectorMay 27, 2026open-market sale1,890—$650K (1)0 of 1
Trent T McKennaPRESIDENT/CHIEF OPERATING OFF.Apr 1, 2026tax withholding22,897———
Bulls Herman EDirectorMay 18, 2026award29,879———
Eslicker Rachel R.SVP & GENERAL COUNSELApr 1, 2026tax withholding676———
Kapoor GauravDirectorMay 18, 2026award————
Wallis-Lage Cindy L.DirectorMay 18, 2026award————
Tang Vance WDirectorMay 1, 2025open-market sale————

Questions

Are Comfort Systems USA, Inc. insiders buying or selling?

Over the twelve months to November 3, 2026, 11 insiders at Comfort Systems USA, Inc. sold $172M of stock in the open market, all by officers and directors, and no insider bought. Net, insiders sold $172M. Only open-market purchases and sales are counted.

Who sold the most Comfort Systems USA, Inc. stock in the last year?

Lane Brian E. (CHIEF EXECUTIVE OFF., Director) sold $68M in 4 open-market sales over the twelve months to November 3, 2026.

Do Comfort Systems USA, Inc. executives sell under 10b5-1 plans?

0 of the 26 open-market sales in the last twelve months (0%) were reported as made under a Rule 10b5-1 trading plan, set up in advance. A sale under a plan is still counted as a sale.

What counts as insider buying here?

Only open-market purchases (Form 4 code P) and sales (code S) by officers, directors and 10% owners. Stock awards, option exercises, shares withheld for tax and gifts are listed in the table but never counted as buying or selling.

More on Comfort Systems USA, Inc.

From Form 4, 4/A and 5 filings with the SEC. A record of insider transactions, not a recommendation.