Stock Trading Canary

United States · SEC Form 4 · Snapshot date: 2026-10-18 · Built: 2026-10-18 · 中文

← United States · Coverage record

US · SEC FORM 4

COMFORT SYSTEMS USA INC

FIX · NYSE · CIK 0001035983 · Industrials · Engineering & Construction

INSIDER SIGNAL

No active buy signal

0 qualifying P purchase groups
in the current 180-day scoring window

26 Form 4 transaction lines observed in the same window
13 sales · 13 option, withholding, award, gift or other lines

Last qualifying purchase2023-12-06 · Hardy Rhoman J · $150.0K

WHY NO ACTIVE SIGNAL?

Purchase activityNone
Recent buyingNone
Recent salesModerate
Buy signal statusInactive
Score anatomy

No score is calculated because there is no qualifying purchase in the active window. Unavailable inputs are not treated as zero or as a bearish signal.

ClusterNot calculated
Purchase sizeNot calculated
RoleNot calculated
RecencyNot calculated
ConvictionNot calculated

Why is there no score?

  • No qualifying open-market purchase supplies cluster, size, role, recency or conviction inputs.
  • Sales and other Form 4 activity remain visible as context and do not create a negative score.

Sales and other Form 4 activity are shown separately and do not create a negative buy signal. Absence of buying is not scored as bearish.

Insider activity timeline

Owner lanes show the latest 180 days. Symbol shape identifies the transaction type; sales remain context only.

AprMayJunJulAugSepOct
MYERS FRANKLINDirector
○▼○○▼▼▼
GEORGE WILLIAM IIICHIEF FINANCIAL OFFICER
▼▼▼
Lane Brian E.CHIEF EXECUTIVE OFF.
▼▼
Hardy Rhoman JDirector
○▼
SANDBROOK WILLIAM JDirector
▼○
Mercado, Pablo G.Director
▼○
● Purchase▼ Sale○ Other

Showing the six most active owners; 6 additional owner(s) remain in Form 4 evidence.

Purchase breadth, concentration & cluster buying

These modules activate when qualifying purchases enter the 180-day research window.

SIGNAL HISTORY

No recorded active-signal snapshot

Scores are archived only when the company qualifies for a published US buy-signal snapshot. Last qualifying purchase: 2023-12-06 · Hardy Rhoman J.

Recent Form 4 activity

0Purchases
30Sales
51Other Form 4 lines
51SEC filings · 365 days
BUYING0 qualifying P line(s) · 180 days
SELLING13 sale line(s) · context only
OTHER13 exercise / withholding / award / gift / other lines
10b5-1 / PLANNEDNot assessed

P is an open-market or private purchase. S is a sale. M, F, A and G usually describe exercises, tax withholding, awards and gifts. These categories remain visually separate.

Market context

Market context has not been captured for this ticker yet. The daily market-context job processes the US universe in rotating batches.

Short interest

Short interest is external context reported to FINRA by broker-dealers. It does not affect the Insider Signal.

Shares short
849,979
Previous report
857,812
Avg daily volume
325,655
Days to cover
2.6

FINRA settlement date: 2026-09-30 · Captured 2026-10-12 · FINRA equity short interest ↗. A share count, published about a week after each of two settlement dates a month; not a percentage of shares outstanding.

Historical equity purchases

Qualifying code P transactions in the local Form 4 history, including purchases outside the current signal window.

Transaction dateReporting ownerTypeSecuritySharesAvg. priceApprox. valueSource
2023-12-06Hardy Rhoman JPurchase (P)Common Stock784USD 191.32USD 149,980SEC filing ↗
2022-11-28Wallis-Lage Cindy L.Purchase (P)Common Stock4USD 127.69USD 571SEC filing ↗
2021-03-01MYERS FRANKLINPurchase (P)Common Stock2,000USD 64.82USD 129,640SEC filing ↗
2020-09-09MYERS FRANKLINPurchase (P)Common Stock3,500USD 49.97USD 174,895SEC filing ↗
2020-05-19Mercado, Pablo G.Purchase (P)Common Stock615USD 33.73USD 20,744SEC filing ↗
2020-05-13MYERS FRANKLINPurchase (P)Common Stock3,500USD 29.38USD 102,830SEC filing ↗
2020-05-04Tang Vance WPurchase (P)Common Stock10,000USD 31.94USD 319,400SEC filing ↗

Form 4 evidence

81 transaction lines in the latest 365-day window; 521 in local history.

DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-08-26Lane Brian E.Sale (S)Common Stock16,024USD 1,608.21USD 25,769,957SEC filing ↗
2026-08-17GEORGE WILLIAM IIISale (S)Common Stock2,554USD 1,859.65USD 4,749,546SEC filing ↗
2026-08-11MYERS FRANKLINSale (S)Common Stock4,000USD 1,693.92USD 6,775,680SEC filing ↗
Show recent Form 4 evidence (30 grouped rows)
DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-08-26Lane Brian E.Sale (S)Common Stock16,024USD 1,608.21USD 25,769,957SEC filing ↗
2026-08-17GEORGE WILLIAM IIISale (S)Common Stock2,554USD 1,859.65USD 4,749,546SEC filing ↗
2026-08-11MYERS FRANKLINSale (S)Common Stock4,000USD 1,693.92USD 6,775,680SEC filing ↗
2026-08-10MYERS FRANKLINSale (S)Common Stock3,500USD 1,690.47USD 5,916,645SEC filing ↗
2026-06-24MYERS FRANKLINSale (S)Common Stock6,700USD 1,954.47USD 13,094,949SEC filing ↗
2026-05-27Hardy Rhoman JSale (S)Common Stock342USD 1,900.08USD 649,827SEC filing ↗
2026-05-21MYERS FRANKLINGift (G)Common Stock273USD 0.00USD 0SEC filing ↗
2026-05-18Wallis-Lage Cindy L.Award / grant (A)Common Stock105USD 0.00USD 0SEC filing ↗
2026-05-18Skidmore Constance EllenAward / grant (A)Common Stock105USD 0.00USD 0SEC filing ↗
2026-05-18SANDBROOK WILLIAM JAward / grant (A)Common Stock105USD 0.00USD 0SEC filing ↗
2026-05-18Mercado, Pablo G.Award / grant (A)Common Stock105USD 0.00USD 0SEC filing ↗
2026-05-18MYERS FRANKLINAward / grant (A)Common Stock105USD 0.00USD 0SEC filing ↗
2026-05-18Kapoor GauravAward / grant (A)Common Stock105USD 0.00USD 0SEC filing ↗
2026-05-18Hardy Rhoman JAward / grant (A)Common Stock105USD 0.00USD 0SEC filing ↗
2026-05-18BULLS HERMAN EAward / grant (A)Common Stock105USD 0.00USD 0SEC filing ↗
2026-05-18ANDERSON DARCYAward / grant (A)Common Stock105USD 0.00USD 0SEC filing ↗
2026-05-11GEORGE WILLIAM IIISale (S)Common Stock1,000USD 2,020.97USD 2,020,970SEC filing ↗
2026-05-11Shaeff JulieSale (S)Common Stock1,123USD 2,000.37USD 2,246,416SEC filing ↗
2026-05-08GEORGE WILLIAM IIISale (S)Common Stock4,000USD 1,948.17USD 7,792,680SEC filing ↗
2026-05-07MYERS FRANKLINSale (S)Common Stock4,500USD 1,902.57USD 8,561,565SEC filing ↗
2026-05-07MYERS FRANKLINGift (G)Common Stock512USD 0.00USD 0SEC filing ↗
2026-05-05Lane Brian E.Sale (S)Common Stock11,113USD 1,969.84USD 21,890,832SEC filing ↗
2026-04-30Mercado, Pablo G.Sale (S)Common Stock500USD 1,779.78USD 889,890SEC filing ↗
2026-04-29SANDBROOK WILLIAM JSale (S)Common Stock1,500USD 1,732.67USD 2,599,005SEC filing ↗
2026-04-01Trent T McKennaTax withholding (F)Common Stock817USD 1,429.60USD 1,167,983SEC filing ↗
2026-04-01Shaeff JulieTax withholding (F)Common Stock232USD 1,429.60USD 331,667SEC filing ↗
2026-04-01Reed TerrenceTax withholding (F)Common Stock273USD 1,429.60USD 390,281SEC filing ↗
2026-04-01Lane Brian E.Tax withholding (F)Common Stock3,599USD 1,429.60USD 5,145,130SEC filing ↗
2026-04-01GEORGE WILLIAM IIITax withholding (F)Common Stock1,081USD 1,429.60USD 1,545,398SEC filing ↗
2026-04-01Eslicker Rachel R.Tax withholding (F)Common Stock99USD 1,429.60USD 141,530SEC filing ↗

Multiple price lines in one filing are grouped and share-weighted. Price and value are blank when a grouped filing line lacks price evidence.

Snapshot & identity

Snapshot date2026-10-18
Ranking versionUS-v1.2
Data qualityPASS ELIGIBLE · —
TickerFIX
CIK0001035983
SectorIndustrials
IndustryEngineering & Construction Yahoo Finance
SEC SIC1731 Electrical Work
ExchangeNYSE

Data coverage

Local Form 4 history521 transaction lines from 2020-02-03 to 2026-08-26
8 P purchase lines · 136 S sale lines · 377 other lines
SEC company submissionsOpen SEC filings ↗

Local ledger as of 2026-10-18. Mapping status is an audit field and does not erase SEC filing evidence.