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FIX COMFORT SYSTEMS USA INC Insider Trading

Latest: Director Sold $13.1M of Shares · Jun 2026

Multiple insiders have been active at COMFORT SYSTEMS USA INC (FIX): 13 distinct insiders account for 0 buy filings and 41 sell filings as of Jun 2026. Its highest-significance filing in the last 90 days: Director Franklin Myers sold $13.1M, transaction dated Jun 2026.

41 filings analyzed · Latest 2026-06-26

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Buys
0
Sells
41
Insiders
13
Direction
Net selling

COMFORT SYSTEMS USA INC leadership

CEO
Brian E. Lane — CHIEF EXECUTIVE OFFICER
CFO
William George — CHIEF FINANCIAL OFFICER
COO
Craig Sasser — Chief Operating Officer
Chair
Franklin Myers — Chair of the Board

Historically, stocks have lagged the S&P 500 by a median ~4% over the 90 days after a high insider sell (n ≈ 3,996, 2024-2026). Past results don't predict the future. How we measure this ↗

June 2026
2026-06-26
high
6,700 shares
$13,094,949
@ $1,954.47
Significance 6

Director Franklin Myers sells 6,700 FIX shares for $13.1M at $1,954.47; stock now -10.6% from 52-week high on strong 90-day +35.6% rally.

Franklin Myers, a director at Comfort Systems USA Inc (FIX), sold 6,700 shares on 2026-06-24 for $1,954.47 per share, reducing holdings by 9.7%. The transaction occurred as the stock trades at $1,853.70, down 10.6% from its 52-week high of $2,073.99, despite a robust 90-day gain of +35.6%. Over Myers's same-ticker history at FIX, his prior four measurable sells showed a 0.00% well-timed rate at the 90-day mark—all four prior sales were followed by positive returns, meaning he consistently sold before further gains. His cross-ticker track record also shows weak sell timing, with an 18.6% average 90-day return after sells and a 0.00% well-timed rate. The company itself is trading at a premium P/E of 53.33 with strong fundamentals (revenue $2.9B, net income $370.4M, annual revenue growth +29.5%), raising questions about valuation sustainability at current levels.

May 2026
2026-05-12
medium
CHIEF FINANCIAL OFFICER
5,000 shares
$9,813,649
@ $1,962.73
Significance 4

CFO of FIX sells 5,000 shares worth ~$9.8M in two transactions; stock rallying 28% in past month but insider shows mixed timing history on prior exits.

William George, the CFO of Comfort Systems USA, has completed his ninth and tenth open-market sales in the past three years, disposing of 5,000 shares across two transactions in early May and netting approximately $9.8 million. The stock has appreciated sharply over the past month and sits just below its 52-week high, a backdrop that might suggest a profitable exit—yet George's historical timing on prior sales at this ticker paints a complicated picture. His prior five sales at Comfort Systems show mixed results: four times the stock rose in the weeks and months following his exit, meaning he sold into strength rather than capturing downside; only once did the stock decline after his sale, making that exit well-timed. The company itself remains profitable with strong revenue growth, operating at a substantial market scale, so the sales are not driven by fundamental deterioration. However, the CFO's repeated selling pattern, combined with his track record of exits that were predominantly poorly-timed over longer periods, suggests caution rather than conviction about near-term prospects—even as near-term price momentum remains positive.

2026-05-11
medium
CHIEF ACCOUNTING OFFICER
1,123 shares
$2,246,416
@ $2,000.37
Significance 4

Chief Accounting Officer Shaeff sells 1,123 shares worth $2.2M, her fifth open-market sale in 36 months with a poor track record of timing.

Julie Shaeff, serving as Chief Accounting Officer, sold a significant portion of her holdings—roughly 8 percent of her stake—in a single transaction, marking her fifth open-market sale within the past three years. The sale occurred after the stock had advanced sharply in recent months and now sits modestly below its 52-week peak, suggesting she chose to exit into strength rather than weakness. Her prior exit at FIX, just weeks earlier, was poorly timed; the stock rose notably in the months that followed, and this pattern of selling into rallies repeats with today's transaction. The company itself remains fundamentally sound—profitable with accelerating revenue growth—yet Shaeff's consistent history of unwinding positions when the stock strengthens rather than during pullbacks suggests she may be managing her personal concentration risk rather than responding to negative business signals. For a retail investor, the key question is whether this reflects routine portfolio housekeeping or a signal of caution; the poorly-timed prior exit and the current sale into a near-peak price lean toward the former.

2026-05-08
medium
4,500 shares
$8,561,574
@ $1,902.57
Significance 5

Director Franklin Myers sells 4,500 shares for $8.56M; gifts 512 shares; mixed prior timing at this stock.

Franklin Myers, a director at Comfort Systems USA, sold a substantial block of 4,500 shares on a single day, liquidating approximately 6% of his holdings. This is his fifth sale of company stock on record—but his prior four sales at this company show conflicting results: in the short term following two prior exits the stock fell (well-timed), while following the other two it rose (poorly timed), and over longer horizons all four prior sales were followed by stock appreciation, suggesting poor exit timing. The current sale occurs as the stock trades modestly below its recent highs, having gained significantly over recent months. Comfort Systems remains operationally healthy with strong revenue growth and solid profitability, suggesting the sale reflects portfolio management rather than distress. The accompanying gifts of over 500 shares to others hint that Myers is both reducing concentrated holdings and conducting wealth transfer, a pattern consistent with estate planning alongside the large cash sale.

2026-05-06
medium
CHIEF EXECUTIVE OFF.
11,113 shares
$21,890,810
@ $1,969.84
Significance 5

CEO Lane sells $22M stake at near-52-week highs as stock rallies sharply; prior sales have mixed timing

Lane Brian E., the Chief Executive Officer of Comfort Systems USA, sold a substantial portion of his holdings at prices near the company's current highs. This sale is noteworthy because it comes after the stock has rallied significantly over the preceding months, suggesting Lane may be trimming a concentrated position rather than expressing conviction in the company's near-term outlook. However, his track record of prior sales in this same stock presents a mixed picture: several sales preceded further stock appreciation, while others were better-timed; overall, his recent sells have not demonstrated consistent foresight about the company's trajectory. The company itself remains profitable with growing revenue, so this appears to be portfolio rebalancing by the CEO rather than a flight from deteriorating fundamentals. Investors should weigh Lane's exit against the company's underlying operational strength and consider whether this is disciplined profit-taking or a signal of caution.

April 2026
2026-04-30
medium
1,500 shares
$2,599,000
@ $1,732.67
Significance 4

Director William J Sandbrook sells ~1,500 shares of Comfort Systems USA for $2.6M amid strong stock rally

William J Sandbrook, a director at Comfort Systems USA, sold a meaningful stake worth $2.6 million at a time when the stock has rallied sharply over recent months. The company itself is fundamentally sound—profitable with accelerating revenue growth and strong quarterly momentum—which makes this sale particularly notable as a case of a director harvesting gains rather than expressing concern about the business. The timing is revealing: Sandbrook is selling into strength, after the stock has already run up substantially, suggesting he may be taking a disciplined approach to rebalancing his concentrated position. This type of profit-taking by a director at elevated levels is routine and typically reflects portfolio management rather than insider alarm about company prospects. However, the scale of the sale relative to his holdings warrants noting as part of a broader pattern if other insiders follow suit.

March 2026
2026-03-05
high
SVP & CHRO
1,787 shares
$2,537,182
@ $1,419.80
Significance 6

SVP & CHRO Reed Terrence sold 1,787 shares (38.7% of holdings) in 2 transactions for $2.5M, Feb-Mar 2026

Reed Terrence executed two separate sales totaling 1,787 shares for $2,537,182.47, reducing his holdings from 4,621 shares to 2,834 shares and representing a -38.7% reduction in position size. The sales occurred at $1,457.17 on 2026-02-24 and $1,397.33 on 2026-03-03, with a blended average of $1,419.80 across both transactions. The current price of $1348.22 reflects a -8.2% discount from the 52-week high of $1468.58, placing the execution prices near recent peaks in the stock's range. This substantial reduction in an SVP & CHRO's stake warrants observation as to whether it reflects a shift in confidence regarding the firm's near-term trajectory, particularly given FIX's elevated valuation (P/E of 35.45) and the recent strong upside momentum (90-day change: +34.6%) that preceded the sales.

2026-03-05
medium
4,500 shares
$6,163,838
@ $1,369.74
Significance 5

Director Darcy sold 4,500 shares of FIX at $1,369.74 for $6,163,838.10 on 2026-03-03; stock near 52-week highs.

Director Darcy executed a sale of 4,500 shares (representing -20.0% of pre-transaction holdings) at $1,369.74, a price within 8.2% of the 52-week high of $1,468.58. At this same ticker, his prior 5 open-market sales show mixed timing outcomes: one sale preceded a 90-day decline, while the other four were followed by gains ranging from 1.9% to 60.2%. His cross-ticker track record across 6 prior sells shows an average 90-day return of +26.6%, with a well-timed rate of 16.67%, suggesting his sales have more often coincided with continued price appreciation than with subsequent declines. The stock has risen 34.6% over 90 days and 11.4% over 30 days, indicating strong recent momentum at the time of sale. FIX trades at a P/E of 35.45 with annual revenue growth of +29.5%, reflecting a high-growth profile. The timing of this sale near historical highs, combined with the insider's historically mixed record of preceding downturns at this ticker, does not present a clear pattern of prescience about near-term price direction.

2026-03-04
low
CHIEF ACCOUNTING OFFICER
2,287 shares
$3,160,974
@ $1,382.15
Significance 4

CAO Shaeff Julie sold 2,287 shares ($3.2M) at $1,382.15; retains 13.7K shares post-transaction.

Shaeff Julie, Chief Accounting Officer of Comfort Systems USA (FIX), executed a sale of 2,287 shares for $3,160,974.08 on 2026-03-03, reducing her holdings by 14.3% from 16,023 to 13,736 shares. The transaction occurred at $1,382.15 per share, approximately 2.6% below the current market price of $1,430.38 and near the 52-week trading range. The company's recent financial performance shows strong growth—annual revenue increased 29.5% to $2.5B in the latest quarter with net income of $291.6M—though the stock trades at a P/E of 37.61, reflecting elevated valuation multiples. The sale represents a modest portfolio reduction by a financial officer with substantial continuing holdings and does not indicate a material change in insider stake relative to company fundamentals or market conditions.

February 2026
2026-02-27
medium
8,636 shares
$12,717,032
@ $1,472.56
Significance 6

Director Franklin sells 8,636 FIX shares at $1,472.56; stock up 46.3% in 90 days on strong revenue growth.

Franklin sold 8,636 shares for $12,717,032.48 after FIX appreciated 46.3% over 90 days and 22.3% over 30 days, with the transaction price of $1,472.56 near the 52-week high of $1,468.58. The company's fundamentals remain strong—revenue growth of 29.5% annually and net income of $291,615,000.00—but the P/E of 37.59 reflects elevated valuation expectations. His prior trades at this same ticker show 0 of 3 measurable sells were well-timed (the stock continued rising after each prior sale), suggesting a pattern of exiting too early relative to subsequent performance. This transaction occurs at the peak of a significant momentum run, which distinguishes it from his prior FIX exits despite the consistent underperformance of his timing at this ticker.

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