How many insider trades does FilingIQ track for FIX?

FilingIQ tracks 904 Form 4 insider transactions for FIX (COMFORT SYSTEMS USA INC), covering filings from Mar 3, 2015 onwards. 4 of those are dated within the last 90 days.

Are FIX insiders net buyers or net sellers?

Across the full Form 4 history for FIX, 52 transactions (6%) were open-market purchases and 216 (24%) were open-market sales. Compensatory awards and option exercises are filtered out of these counts.

Where does FIX insider data come from?

Every transaction shown on this page is sourced directly from SEC EDGAR Form 4 filings. FilingIQ normalises insider identity across reporting variations and scores discretionary open-market purchases and sales on its multi-factor composite model.

What sector is FIX in?

COMFORT SYSTEMS USA INC (FIX) is classified in the Industrials sector, specifically Engineering & Construction, with a current market capitalisation of $50.80B.

FIX insider trading

NYSE Industrials

COMFORT SYSTEMS USA INC: insider trade history from SEC Form 4 filings.

Total Form 4 trades

904

Last 90 days

Buys / sells

6% / 24%

Market cap

$50.80B

About COMFORT SYSTEMS USA INC

Comfort Systems USA, Inc., together with its subsidiaries, provides mechanical and electrical installation, renovation, maintenance, repair, and replacement services for the mechanical and electrical services industry in the United States. The company operates through two segments: Mechanical and Electrical. It offers heating, ventilation, and air conditioning systems, as well as plumbing, electrical, piping and controls, off-site construction, monitoring, and fire protection. The company is also involved in the design, engineering, integration, installation, and start-up of mechanical, electrical, and plumbing (MEP) and related systems in new buildings; and renovation, expansion, maintenance, monitoring, repair, and replacement of systems in existing buildings. In addition, it provides remote monitoring of power usage, temperature, pressure, humidity and air flow for MEP and other building systems. The company serves building owners and developers, general contractors, architects, consulting engineers, and property managers in the commercial, industrial, and institutional markets. Comfort Systems USA, Inc. was founded in 1917 and is headquartered in Houston, Texas.

Company website: comfortsystemsusa.com

FIX insider activity at a glance

FilingIQ tracks 904 insider transactions for FIX in filings since Mar 3, 2015. The most recent transaction is dated Aug 26, 2026.

Across the full history, 52 open-market purchases and 216 open-market sales were filed under transaction codes P and S respectively. Compensatory share awards (code A) and option exercises (code M) are tracked separately and not counted here.

The average FilingIQ composite score on FIX insider trades is 62.3/100, produced by FilingIQ's multi-factor Form 4 model. Model framework documented at methodology.

View live FIX trades on FilingIQ Raw filings on SEC EDGAR

Latest FIX Form 4 filings

Lane Brian E. CHIEF EXECUTIVE OFF.

S Aug 27, 2026

GEORGE WILLIAM III CHIEF FINANCIAL OFFICER

Skidmore Constance Ellen

A May 19, 2026

Most recent disclosures. Sign up to filter by score, transaction code, or insider role.

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Top insiders trading FIX

GEORGE WILLIAM III

38 trades · score 73.0

13F funds holding FIX

AQR CAPITAL MANAGEMENT LLC

$2.08B · 0.7% of AUM

WESTFIELD CAPITAL MANAGEMENT CO LP

$704.45M · 2.3% of AUM

FEDERATED HERMES, INC.

$676.81M · 1.0% of AUM

Value Aligned Research Advisors, LLC

$482.82M · 1.2% of AUM

LORD, ABBETT & CO. LLC

$414.83M · 1.2% of AUM

Frequently asked

How many insider trades does FilingIQ track for FIX?: FilingIQ tracks 904 Form 4 insider transactions for FIX (COMFORT SYSTEMS USA INC), covering filings from Mar 3, 2015 onwards. 4 of those are dated within the last 90 days.
Are FIX insiders net buyers or net sellers?: Across the full Form 4 history for FIX, 52 transactions (6%) were open-market purchases and 216 (24%) were open-market sales. Compensatory awards and option exercises are filtered out of these counts.
Where does FIX insider data come from?: Every transaction shown on this page is sourced directly from SEC EDGAR Form 4 filings. FilingIQ normalises insider identity across reporting variations and scores discretionary open-market purchases and sales on its multi-factor composite model.
What sector is FIX in?: COMFORT SYSTEMS USA INC (FIX) is classified in the Industrials sector, specifically Engineering & Construction, with a current market capitalisation of $50.80B.

Methodology & sources

Every FIX insider transaction shown on FilingIQ is parsed directly from a public SEC Form 4 XML filing. Insider identity is normalised across reporting variants (CIK changes, name spellings, related-party indirect holdings). The FilingIQ composite score is documented in full on the team page and algo disclosure. Not investment advice; see disclaimer.