SEC Form 4
Comfort Systems USA, Inc. (FIX) insider trading
In the 12 months to Oct 23, 2026, 12 FIX insiders reported open-market sales of $185.2M across 27 filings; no open-market purchases were filed.
Latest filing · Last 12 months · Source: SEC EDGAR · How we count
- Open-market sales
- $185.2M
- 27 filings · 12 insiders
- Open-market purchases
- $0
- 0 filings
Who traded FIX, and when
- Sale
FIX daily close from Oct 23, 2025 to Oct 23, 2026, between $825.00 and $2,066.51, last $1,160.86. 27 sale and 0 purchase filings by 12 insiders, marked at their filing dates. Brian E. Lane, PRESIDENT/CHIEF EXECUTIVE OFF. → CHIEF EXECUTIVE OFF.: sold $68.1M across 4 filings, first filed Nov 25, 2025, last Aug 27, 2026. Franklin Myers, Director: sold $52.1M across 5 filings, first filed Oct 31, 2025, last Aug 12, 2026. William George III, CHIEF FINANCIAL OFFICER: sold $31.7M across 4 filings, first filed Dec 3, 2025, last Aug 18, 2026. Darcy Anderson, Director: sold $10.0M across 2 filings, first filed Nov 3, 2025, last Mar 5, 2026. William J. Sandbrook, Director: sold $6.2M across 2 filings, first filed Feb 26, 2026, last Apr 30, 2026. Julie Shaeff, CHIEF ACCOUNTING OFFICER: sold $5.4M across 2 filings, first filed Mar 4, 2026, last May 11, 2026. 6 others: sold $11.7M across 8 filings, first filed Oct 30, 2025, last May 28, 2026.
Largest mark · tap a row for others
Brian E. Lane · CHIEF EXECUTIVE OFF.
Sale $25,769,923
16,024 shares at $1,608.21 avg
Filed Aug 27, 2026 · traded Aug 26
Close on filing date $1,614.98
Brian E. Lane · PRESIDENT/CHIEF EXECUTIVE OFF. → CHIEF EXECUTIVE OFF.
PRESIDENT/CHIEF EXECUTIVE OFF. → CHIEF EXECUTIVE OFF.
$68.1M soldFranklin Myers · Director
Director
$52.1M soldWilliam George III · CHIEF FINANCIAL OFFICER
CHIEF FINANCIAL OFFICER
$31.7M soldDarcy Anderson · Director
Director
$10.0M soldWilliam J. Sandbrook · Director
Director
$6.2M soldJulie Shaeff · CHIEF ACCOUNTING OFFICER
CHIEF ACCOUNTING OFFICER
$5.4M sold6 others
Combined, one mark per week
$11.7M soldOpen-market trades
27 filings in the last 12 months| Insider | Role | Sold | Bought | Filings | Pre-arranged (10b5-1) | Last filed |
|---|---|---|---|---|---|---|
| Brian E. Lane | PRESIDENT/CHIEF EXECUTIVE OFF. → CHIEF EXECUTIVE OFF. | $68.1M | — | 4 | — | |
| Franklin Myers | Director | $52.1M | — | 5 | — | |
| William George III | CHIEF FINANCIAL OFFICER | $31.7M | — | 4 | — | |
| Darcy Anderson | Director | $10.0M | — | 2 | — | |
| William J. Sandbrook | Director | $6.2M | — | 2 | — | |
| Julie Shaeff | CHIEF ACCOUNTING OFFICER | $5.4M | — | 2 | — | |
| Pablo G. Mercado | Director | $4.1M | — | 3 | — | |
| Terrence Reed | SVP & CHRO | $2.5M | — | 1 | — | |
| Herman E. Bulls | Director | $2.0M | — | 1 | — | |
| Constance Ellen Skidmore | Director | $1.4M | — | 1 | — | |
| Laura Finley Howell | SVP & GENERAL COUNSEL | $996.2K | — | 1 | — | |
| Rhoman J. Hardy | Director | $649.8K | — | 1 | — |
| Filed | Insider | Type | Shares | Avg price | Value | Held after | Source |
|---|---|---|---|---|---|---|---|
traded | Brian E. Lane CHIEF EXECUTIVE OFF. | Sale | 16,024 | $1,608.21 | $25.8M | 145,065 | |
traded | William George III CHIEF FINANCIAL OFFICER | Sale | 2,554 | $1,859.65 | $4.7M | 30,250 | |
traded | Franklin Myers Director | Sale | 7,500 | $1,692.31 | $12.7M | Multiple accounts | |
traded | Franklin Myers Director | Sale | 6,700 | $1,954.47 | $13.1M | 62,115 | |
traded | Rhoman J. Hardy Director | Sale | 342 | $1,900.08 | $649.8K | 1,890 | |
traded | William George III CHIEF FINANCIAL OFFICER | Sale | 5,000 | $1,962.73 | $9.8M | 32,804 | |
traded | Julie Shaeff CHIEF ACCOUNTING OFFICER | Sale | 1,123 | $2,000.37 | $2.2M | 12,624 | |
traded | Franklin Myers Director | Sale | 4,500 | $1,902.57 | $8.6M | 68,983 | |
traded | Brian E. Lane CHIEF EXECUTIVE OFF. | Sale | 11,113 | $1,969.84 | $21.9M | 161,089 | |
traded | Pablo G. Mercado Director | Sale | 500 | $1,779.78 | $889.9K | 3,000 | |
traded | William J. Sandbrook Director | Sale | 1,500 | $1,732.67 | $2.6M | 7,666 | |
traded | Darcy Anderson Director | Sale | 4,500 | $1,369.74 | $6.2M | 18,035 | |
traded | Terrence Reed SVP & CHRO | Sale | 1,787 | $1,419.80 | $2.5M | 2,834 | |
traded | Julie Shaeff CHIEF ACCOUNTING OFFICER | Sale | 2,287 | $1,382.15 | $3.2M | 13,736 | |
traded | Franklin Myers Director | Sale | 8,636 | $1,472.56 | $12.7M | 73,995 | |
traded | Brian E. Lane PRESIDENT/CHIEF EXECUTIVE OFF. | Sale | 9,365 | $1,453.12 | $13.6M | 171,523 | |
traded | William J. Sandbrook Director | Sale | 2,500 | $1,443.32 | $3.6M | 9,166 | |
traded | William George III CHIEF FINANCIAL OFFICER | Sale | 9,000 | $1,434.97 | $12.9M | 37,824 | |
traded | Pablo G. Mercado Director | Sale | 500 | $1,405.00 | $702.5K | 3,500 | |
traded | Constance Ellen Skidmore Director | Sale | 1,000 | $1,425.00 | $1.4M | 12,627 | |
traded | Laura Finley Howell SVP & GENERAL COUNSEL | Sale | 1,000 | $996.16 | $996.2K | 7,938 | |
traded | William George III CHIEF FINANCIAL OFFICER | Sale | 4,370 | $958.88 | $4.2M | 39,824 | |
traded | Brian E. Lane PRESIDENT/CHIEF EXECUTIVE OFF. | Sale | 7,158 | $947.98 | $6.8M | 180,888 | |
traded | Darcy Anderson Director | Sale | 4,000 | $958.72 | $3.8M | 22,535 | |
traded | Herman E. Bulls Director | Sale | 2,000 | $1,013.62 | $2.0M | 30,574 | |
traded | Franklin Myers Director | Sale | 5,000 | $1,006.68 | $5.0M | 82,901 | |
traded | Pablo G. Mercado Director | Sale | 2,500 | $1,005.41 | $2.5M | 4,000 |
GET /stocks/filings/vX/form-4?tickers=FIX&filing_date.gte=2025-10-23&sort=filing_date.desc&limit=500{
"status": "OK",
"results": [
{
"tickers": [
"FIX"
],
"issuer_cik": "0001035983",
"owner_cik": "0001448240",
"accession_number": "0001448240-26-000019",
"form_type": "4",
"filing_date": "2026-08-27",
"period_of_report": "2026-08-26",
"issuer_name": "COMFORT SYSTEMS USA INC",
"issuer_trading_symbol": "FIX",
"owner_name": "Lane Brian E.",
"is_director": true,
"is_officer": true,
"is_ten_percent_owner": false,
"is_other": false,
"officer_title": "CHIEF EXECUTIVE OFF.",
"security_type": "non_derivative",
"record_type": "transaction",
"security_title": "Common Stock",
"transaction_timeliness": "O",
"aff_10b5_one": false,
"transaction_date": "2026-08-26",
"transaction_code": "S",
"equity_swap_involved": false,
"transaction_shares": 16024,
"transaction_price_per_share": 1608.2079,
"transaction_acquired_disposed": "D",
"shares_owned_following_transaction": 145065,
"transaction_value": 25769923.3896,
"direct_or_indirect": "D",
"footnotes": [
{
"id": "F1",
"description": "Represents the average price of shares sold; full information regarding the number of shares sold and specific prices will be made available upon request to the Company's Office of the General Counsel."
}
]
},
{
"tickers": [
"FIX"
],
"issuer_cik": "0001035983",
"owner_cik": "0001205073",
"accession_number": "0001205073-26-000013",
"form_type": "4",
"filing_date": "2026-08-18",
"period_of_report": "2026-08-17",
"issuer_name": "COMFORT SYSTEMS USA INC",
"issuer_trading_symbol": "FIX",
"owner_name": "GEORGE WILLIAM III",
"is_director": false,
"is_officer": true,
"is_ten_percent_owner": false,
"is_other": false,
"officer_title": "CHIEF FINANCIAL OFFICER",
"security_type": "non_derivative",
"record_type": "transaction",
"security_title": "Common Stock",
"transaction_timeliness": "O",
"aff_10b5_one": false,
"transaction_date": "2026-08-17",
"transaction_code": "S",
"equity_swap_involved": false,
"transaction_shares": 2554,
"transaction_price_per_share": 1859.6513,
"transaction_acquired_disposed": "D",
"shares_owned_following_transaction": 30250,
"transaction_value": 4749549.4202,
"direct_or_indirect": "D",
"footnotes": [
{
"id": "F1",
"description": "Represents the average price of shares sold; full information regarding the number of shares sold and specific prices will be made available upon request to the Company's Office of the General Counsel."
}
]
}
]
}
// trimmed to 2 resultsThe response includes every Form 4 record; this page keeps open-market purchases and sales on common stock and removes duplicate joint-filer rows.
Other insider activity (not market trades) · 52 records
- Option exercises1 record
- Tax withholding24 records
- Grants and awards20 records
- Gifts7 records
Reported on Form 4 but not purchases or sales in the market, so not counted in the totals above.
Build this yourself
This page joins two Massive endpoints: Form 4 filings and daily prices. Ask an agent to watch for new filings:
Using the Massive API (massive.com/docs/llms.txt), check Form 4 filings for FIX every day with transaction_code=P and tell me when an insider files an open-market purchase, with their role, shares, price and the filing link.
How to read this page
- Open-market purchase or sale
- A buy or sell of the company's stock at market price. Grants, option exercises, shares withheld for tax, gifts and employee stock plan purchases are listed separately and not counted.
- Role
- The title on each filing. Someone whose title changed shows more than one.
- Filing date
- Insiders have two business days to report a trade. Totals and the chart use the filing date, when the trade became public.