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Comfort Systems USA Inc. insider trading

In twelve months insiders at Comfort Systems USA bought nothing and sold $172M on the open market; none of the 26 sales was under a plan set in advance.

Bought on the open marketNonein twelve months
Sold on the open market$172M26 sales
Sales set in advanceNoneall 26 chosen by the insider
Pay taken in stockNone
New to this? How to read this page
  1. Insiders are the people who run the company: officers, directors and owners of 10% or more. They must report a trade on Form 4 within two business days.
  2. A purchase on the open market is the strongest sign: the insider spent their own money.
  3. A sale under a trading plan (Rule 10b5-1) says little: its dates were fixed months before. Sales outside a plan say more, but insiders sell for many reasons, such as taxes or a house.
  4. Grants, option exercises and shares held back for tax are left out.
  5. What is a Form 4? · Form 4 codes

What kind of trades

Insiders only sold: 26 sales worth $172M, each on a day the insider chose.

Purchasebought with their own money
Pay in stock, own choiceowed cash, chose shares
Sale outside a planthe insider picked the day
Sale under a plandates fixed months before
Says littlecompany plans, board pay, cash units
Bought
none
Sold
26 outside a plan

Every Form 4 line of the last twelve months, counted by kind. The grades come from the filing itself: whether the insider paid cash, whether a plan set the date, whether pay was taken in stock by choice.

Insider trades on the share price

last twelve months

26 marks over twelve months, each in its grade: solid for the stronger signs, hollow or grey for the ones that say little.

PurchasePay in stock, own choiceSale outside a planSale under a planSays little

The blue line is the daily close over twelve months. Each mark is one insider's trades on one day, on that day's price, sized by dollar value. Solid marks are the stronger signs; hollow and grey marks say little. Hover or tap a mark for who, how much and why.

Trades worth a closer look

A purchase stands out when two or more of these hold: a senior insider, several insiders buying within 90 days, a fall of 10% or more in the three months before, or over $1 million. A sale outside a plan is judged the same way. These are the Feed's rules.

Who traded

dollars, twelve months

11 insiders traded. The most: Lane Brian E., sale outside a plan $68.1M.

One row per insider, sold to the left and bought to the right, split by grade: the paler part of a bar is the part that says little.

How it compares

every company on the site

Open-market sales, twelve months

Open-market purchases, twelve months

    The bar ranks every company on the site from the lowest on the left to the highest on the right, in three equal thirds; the small figures under it are the values where each third starts, and the black tick is the middle company. The orange dot is this company; the grey ticks are the other companies in its industry (hover or tap for names). A hatched block is companies tied at none.

    Every Form 4 line

    Purchase: bought on the open market with their own moneyTook pay in stock, own choice: owed cash, chose shares instead; a softer signSale: sold on the open market, not under a plan set in advanceSale, trading plan: under a Rule 10b5-1 plan set up months before, so the date was fixed in advanceGrey lines: plan purchases, pay in stock taken by the whole board or under a company plan, and units paid in cash; they say little about the insider's own view
    TradedInsiderRoleTypeSharesPriceValueFiling
    26 August 2026Lane Brian E.Chief Executive OFF.Saleafter a 13% fall over three months · 22% below its one-year high · Form 144 notice 26 August 202616,024$1,608.21$25.8 millionForm 4
    17 August 2026George William IiiChief Financial OfficerSaleafter a 1% rise over three months · 9% below its one-year high · Form 144 notice 17 August 20262,554$1,859.65$4.7 millionForm 4
    11 August 2026Myers Franklin, partnership InterestDirectorSaleafter a 16% fall over three months · 18% below its one-year high · Form 144 notice 11 August 20264,000$1,693.92$6.8 millionForm 4
    10 August 2026Myers FranklinDirectorSaleafter a 18% fall over three months · 19% below its one-year high · Form 144 notice 11 August 20263,500$1,690.47$5.9 millionForm 4
    24 June 2026Myers FranklinDirectorSaleafter a 33% rise over three months · 5% below its one-year high · Form 144 notice 7 May 20266,700$1,954.47$13.1 millionForm 4
    27 May 2026Hardy Rhoman JDirectorSaleafter a 29% rise over three months · 9% below its one-year high · Form 144 notice 22 May 2026342$1,900.08$649,827Form 4
    11 May 2026George William IiiChief Financial OfficerSaleafter a 58% rise over three months · at its one-year high · Form 144 notice 11 May 20261,000$2,020.96$2.0 millionForm 4
    8 May 2026George William IiiChief Financial OfficerSaleafter a 59% rise over three months · 3% below its one-year high · Form 144 notice 8 May 20264,000$1,948.17$7.8 millionForm 4
    11 May 2026Shaeff JulieChief Accounting OfficerSaleafter a 58% rise over three months · at its one-year high · Form 144 notice 11 May 20261,123$2,000.37$2.2 millionForm 4
    7 May 2026Myers FranklinDirectorSaleafter a 69% rise over three months · 3% below its one-year high · Form 144 notice 7 May 20264,500$1,902.57$8.6 millionForm 4
    5 May 2026Lane Brian E.Chief Executive OFF.Saleafter a 63% rise over three months · at its one-year high · Form 144 notice 5 May 202611,113$1,969.84$21.9 millionForm 4
    30 April 2026Mercado, Pablo G.DirectorSaleafter a 57% rise over three months · at its one-year high · Form 144 notice 30 April 2026500$1,779.78$889,890Form 4
    29 April 2026Sandbrook William JDirectorSaleafter a 47% rise over three months · 4% below its one-year high · Form 144 notice 29 April 20261,500$1,732.67$2.6 millionForm 4
    3 March 2026Reed TerrenceSVP & CHROSaleafter a 49% rise over three months · 5% below its one-year high · Form 144 notice 3 March 20261,116$1,397.33$1.6 millionForm 4
    3 March 2026Anderson DarcyDirectorSaleafter a 49% rise over three months · 5% below its one-year high · Form 144 notice 3 March 20264,500$1,369.74$6.2 millionForm 4
    24 February 2026Reed TerrenceSVP & CHROSaleafter a 53% rise over three months · at its one-year high · Form 144 notice 24 February 2026671$1,457.17$977,761Form 4
    3 March 2026Shaeff JulieChief Accounting OfficerSaleafter a 49% rise over three months · 5% below its one-year high · Form 144 notice 3 March 20262,287$1,382.15$3.2 millionForm 4
    25 February 2026Myers FranklinDirectorSaleafter a 49% rise over three months · at its one-year high · Form 144 notice 24 February 20268,636$1,472.56$12.7 millionForm 4
    25 February 2026Lane Brian E.President/Chief Executive OFF.Saleafter a 49% rise over three months · at its one-year high · Form 144 notice 25 February 20269,365$1,453.12$13.6 millionForm 4
    24 February 2026Sandbrook William JDirectorSaleafter a 53% rise over three months · at its one-year high · Form 144 notice 24 February 20262,500$1,443.32$3.6 millionForm 4
    24 February 2026Skidmore Constance EllenDirectorSaleafter a 53% rise over three months · at its one-year high · Form 144 notice 23 February 20261,000$1,425.00$1.4 millionForm 4
    23 February 2026Mercado, Pablo G.DirectorSaleafter a 50% rise over three months · 3% below its one-year high · Form 144 notice 23 February 2026500$1,405.00$702,500Form 4
    23 February 2026George William IiiChief Financial OfficerSaleafter a 50% rise over three months · 3% below its one-year high · Form 144 notice 23 February 20269,000$1,434.97$12.9 millionForm 4
    4 December 2025Howell Laura FinleySVP & General CounselSaleafter a 39% rise over three months · at its one-year high · Form 144 notice 4 December 20251,000$996.16$996,163Form 4
    1 December 2025George William IiiChief Financial OfficerSaleafter a 37% rise over three months · 5% below its one-year high · Form 144 notice 1 December 20254,370$958.88$4.2 millionForm 4
    24 November 2025Lane Brian E.President/Chief Executive OFF.Saleafter a 37% rise over three months · 6% below its one-year high · Form 144 notice 24 November 20257,158$947.98$6.8 millionForm 4
    A filing with several lines appears once per line.
    Read morePay taken in stock by the insider's own choice has the filing's footnote, word for word, in the note under it; for the others, hold the pointer on the type. An award filed at no price shows n/a.