Stock Trading Canary

Snapshot date: 2026-10-18 · Built: 2026-10-19T15:46:40+00:00 · Publication status: REVIEW

← United States · 中文

COMPANY RESEARCH

GIBRALTAR INDUSTRIES, INC.

ROCK · United States · Basic Materials

INSIDER SIGNAL

Insider activity score：61.7 / 100

3 insiders · 3 purchase events · $823k net purchases

US #268 · United States #268

WHY THIS SIGNAL?

Score anatomy

Each bar shows the contribution to the current score; the weights and formula stay unchanged.

Cluster+21.0 / 35

How many distinct insiders bought in the cluster

Purchase size+16.8 / 25

Purchase value relative to company size and liquidity

Role+7.0 / 20

The seniority and relevance of participating insiders

Recency+0.9 / 10

How recently the purchases occurred

Conviction+10.0 / 10

How clearly buying stands out from other activity

What is holding the score back?

  • ⚠ Buyer breadth is moderate · fewer than 4 distinct filers
  • ⚠ Insider role contributes less on the current role scale
  • ⚠ Purchase activity is becoming less recent

The role contribution follows the US model's seniority ladder.

BUYING PROFILE

3 events · 3 insiders · 180d

Cluster 100%Repeat 0%Independent 0%Large 0%

Percentages are mutually exclusive and sum to 100%.

Buying concentration

90%

Largest buyer：Bosway William T · 739k USD
Gross qualified purchase transaction-line value：823k USD

The headline $ total is net buying for the screen; this module uses gross qualified purchase transaction-line values in the filing currency, so the amounts can differ. The current 15-day buyer-breadth input counts distinct buyers; value concentration is disclosed separately here.

This is a ranking under the current US screening rules—not a probability of gain, return forecast, or buy recommendation.

Key purchase quotes (filing currency)

FilerPrice per unitTrade date
Bosway William T37.44 USDMay 26, 2026
Bolanowski Katherine35.63–35.66 USDMay 21, 2026
Lovechio Joseph A34.62 USDMay 20, 2026
Model details

Cluster breakdown (does not change the score)

15-day buyer breadth (count)
3 distinct reported filers
Peak time window
2026-05-20 to 2026-05-26
Current breadth input
0.600 (capped at 4+ buyers)
Buyer independence
Not yet measured; related-party fields are not cross-market comparable

What the filings show

Insider vs stock price

3 purchase day(s), 4 purchase line(s) in the 180-day window.

Daily close (USD)Day with an insider purchase
3540455055May 2026JunJulAugSepOct2026-05-20 · 1 purchase line(s) · 1 insider(s) · close since that day +4.3%2026-05-21 · 2 purchase line(s) · 1 insider(s) · close since that day +3.2%2026-05-26 · 1 purchase line(s) · 1 insider(s) · close since that day -2.2%36.66last close09 Oct

Markers sit on the closing price of the transaction day. They show when insiders traded, not the price they paid or received. "Since" compares that day's close with the last close shown; it is what happened at this company, not a forecast.

Insider timeline

3 insiders bought within 7 days, 20 May to 26 May: 1 CFO, 1 Executive, 1 CEO / chair. The share closed at 35.15 on the first of those days and at 36.66 most recently (+4.3%). That week 259 companies across United States disclosed insider purchases, more than in 96% of the last 26 weeks: insiders often buy together when a closed period ends, so the timing alone says less than it seems.

Several insiders within 15 days: 2026-05-20 – 2026-05-26Lovechio Joseph ALovechio Joseph AVP and CFOCFOBolanowski KatherineBolanowski KatherineGeneral Counsel, VP, SecretaryExecutiveBosway William TBosway William TPresident and CEOCEO / chair2026-05-20 · Lovechio Joseph A · purchase · 34,620 USD2026-05-21 · Bolanowski Katherine · purchase · 49,886 USD2026-05-26 · Bosway William T · purchase · 738,878 USD2026-04-20 to 2026-04-26: 74 companies2026-04-27 to 2026-05-03: 96 companies2026-05-04 to 2026-05-10: 151 companies2026-05-11 to 2026-05-17: 232 companies2026-05-18 to 2026-05-24: 259 companies2026-05-25 to 2026-05-31: 171 companies2026-06-01 to 2026-06-07: 192 companies2026-06-08 to 2026-06-14: 172 companies2026-06-15 to 2026-06-21: 163 companies2026-06-22 to 2026-06-28: 108 companies2026-06-29 to 2026-07-05: 93 companies2026-07-06 to 2026-07-12: 80 companies2026-07-13 to 2026-07-19: 79 companies2026-07-20 to 2026-07-26: 70 companies2026-07-27 to 2026-08-02: 77 companies2026-08-03 to 2026-08-09: 131 companies2026-08-10 to 2026-08-16: 200 companies2026-08-17 to 2026-08-23: 218 companies2026-08-24 to 2026-08-30: 184 companies2026-08-31 to 2026-09-06: 175 companies2026-09-07 to 2026-09-13: 139 companies2026-09-14 to 2026-09-20: 186 companies2026-09-21 to 2026-09-27: 134 companies2026-09-28 to 2026-10-04: 130 companies2026-10-05 to 2026-10-11: 73 companies2026-10-12 to 2026-10-18: 72 companiesCompanies disclosing purchases, per weekMayJunJulAugSepOct

Tap an item for what it means.

●A purchase: the bigger the dot, the more was bought

Each dot is one insider's purchases on one day. The dot's area follows the amount: the largest purchase here gets the largest dot. Hold the pointer over a dot to see the date and the amount.

▮Purple band: several insiders bought within 15 days

The band marks the stretch with the most different buyers: at most 15 days long and at least two people. Here it is 20 May – 26 May, with 3 insiders. Only the strongest stretch is marked. Several people deciding the same thing is harder to explain by one person's private reasons, but insiders often buy together just after a closed period ends, so compare it with the grey weekly bars.

Blue line: this share's price, −5.4% over these six months

The closing price of each day, from 38.74 on 2026-04-21 to 36.66 on 2026-10-09. The line has no scale; read it for high and low: a dot on a low stretch was bought cheaply, a dot on a high stretch was not.

Dashed line: the typical stock on the same exchange, −11.1%

Taken from the 1230 other stocks on the same exchange that this site holds prices for. Each is measured from the first day of the window, and every day the middle one is drawn. It starts where the blue line starts, so the gap between the two is the difference: this share −5.4%, the typical one −11.1%, 5.7 points ahead. It is not an index and not a comparison within one industry.

▂Grey bars: companies across United States disclosing purchases each week

A taller bar is a week in which more companies disclosed insider purchases. The purple bar is the week of the band above: 259 companies, number 1 of the last 26 weeks. If that week was a peak anyway, buying together is less special than it looks.

This company: insiders buying per month, last 12 months

Nov
Dec
Jan
Feb
2Mar
Apr
3May
Jun
Jul
Aug
Sep
Oct

Darker bars are inside the 180-day window above.

Who traded

InsiderRolePurchasesSalesBoughtFirst purchaseShare price since
Lovechio Joseph ACFO1—34.6k USD2026-05-20+4.3%
Bolanowski KatherineExecutive1—49.9k USD2026-05-21+3.2%
Bosway William TCEO / chair1—738.9k USD2026-05-26−2.2%
Why this score? · Model details

Priority = 100 × Σ(fixed weight × 0–1 rule-based input)

FactorWeightThis company inputPoint contribution
15-day buyer breadth (count)35%0.60021.0
Qualified-buy size25%0.67116.8
Role informativeness (inverted)20%0.65013.0
Recency10%0.0890.9
Buy/sell conviction10%1.00010.0

This is a heuristic ordering under the current rules, not a calibrated return forecast. It explains why candidates rank differently; the public-filing evidence and data limits are shown below.

BULL VS BEAR

Two readings of this buying

The same filings, read two ways. Each line is a fact stored for this company with the number behind it, and appears only when that number crosses a fixed threshold. Neither side is a forecast and no winner is declared.

Where the evidence comes from

Independent evidence does not object: the purchases themselves carry bull lines (several insiders together); share price and trading, short sellers were checked and none crosses a bear threshold. No data is held for: company results, company actions.

  • The insider purchases themselvesBullseveral insiders together Bearvalue concentrated in one buyer, latest purchase is old6 checked, under the threshold · 1 missing
  • Share price and trading2 checked, under the threshold
  • Short sellers2 checked, under the threshold
  • Company results2 missing
  • Company actionsno data held

Bull case · the buying is informative

  • 3 insiders bought within 15 days (2026-05-20 to 2026-05-26). Several people reaching the same decision at the same time is hard to put down to one person's circumstances.

Bear case · discount it

  • Bosway William T accounts for 90% of the value bought. The other 2 buyers add names more than money.
  • The latest purchase was 145 days ago (2026-05-26). A reporting period has passed since, so what the buyers knew then may already be public.

Evidence still missing

  • No buyer here has 5 or more completed earlier purchases on record, so there is no track record to weigh.
  • The company's market value is not captured, so the purchases cannot be stated as a share of the business or of its trading volume.
  • No earnings, margin or cash-flow figures are captured for this company. The latest annual and interim reports are where to check whether the business is improving or deteriorating.
Checked and under the threshold: 10, 1 close to it
  • EitherNet purchases of $823k in 180 days. Bull from $1.0M, bear when all purchases total under $25k. close to the threshold
  • Either3 insiders bought in the last 180 days and 2 in the 180 days before. Bull when the number at least doubles and rises by two; bear when at least two bought before and no more buy now.
  • BearNo insider sale is recorded in the same 180 days.
  • BearThe share price changed −8.8% over six months (three months −11%, one month −18%) and stands 51% below its 52-week high. Counted for the bear side from a fall of 20%.
  • BearOver three months the share price changed −11% and the median of 46 Basic Materials companies changed −15%: ahead by 4 points. Counted for the bear side from 20 points behind.
  • BearNone of the 3 purchase filings ticks Form 4's 10b5-1 box.
  • BearOver the last 5 trading days to 2026-10-16, 50% of this stock's off-exchange volume was sold short; over the 60 days before, 66%. The market's median is 50%. This is trading volume, not a position: a market maker who sells short and covers the same day is counted, so about half of all volume is short on an ordinary day. It is shown for comparison and counts for neither side.
  • Bull3 of 3 purchase filings state the shares held before and after. The largest addition to an existing holding took it from 15,989 to 17,389 shares (+8.8%). Counted for the bull side from +100%, for the bear side below +1%.
  • BearNo insider filing in the last 180 days opened a hedge on this stock.
  • BearFINRA short interest on 2026-09-30 equals 4.9 days of average trading volume and 7.0% of the 29,683,889 shares outstanding, up 8.0% from the previous report. Counted for the bear side from 10 days, or from 10% of the shares outstanding.

Both columns arrange stored facts only. They do not change the insider score or the ranking and are not investment advice.

Signal history

61.7 / 100

Latest recorded score

↓ -7.0 ptssince the first recorded snapshot on 2026-10-09; 9 calendar days observed
Recorded snapshots
7
First snapshot
2026-10-09

There is not yet a 30-calendar-day comparison; earlier scores are not reconstructed. These are raw signal scores saved when each full scoring run completed. They describe changes in research ranking, not price performance or returns.

Why did it change?

Less than 30 days of comparable history is available, so factor movement is not yet decomposed.

Signal score history

Fixed 0–100 scale; dates are spaced by calendar time.

02550751002026-10-09 · 68.72026-10-12 · 61.82026-10-13 · 61.82026-10-14 · 61.82026-10-15 · 61.82026-10-16 · 61.72026-10-18 · 61.7Oct 09Oct 13Oct 14Oct 15Oct 18

Recent recorded points

  1. 68.7
  2. 61.8
  3. 61.8
  4. 61.8
  5. 61.7
View all recorded scores
Snapshot dateSignal score
2026-10-0968.7
2026-10-1261.8
2026-10-1361.8
2026-10-1461.8
2026-10-1561.8
2026-10-1661.7
2026-10-1861.7

Sector context

Basic Materials

Buying breadth
4.0% (10 / 252 issuers)
Sector rank
#9 / 13

This is sector-level research context. It does not affect the Insider Signal or ranking.

View US sector research →

Insider profile outcomes

Historical performance following insider filings. The company role is translated below each name while preserving the original title.

Events are disclosure-level observations; related disclosures published on the same date may share a return path and may not be statistically independent. This research enrichment does not affect the insider score or ranking.

Bosway William TPresident and CEO
First purchase in 12M
1/3
Large purchase ≥ $100k
2/3
Cluster buying · 15D
2/3
Buying the dip · ≥20% below prior 52W high
Not classifiable
Routine / opportunistic
Not classifiable
Bolanowski KatherineGeneral Counsel, VP, Secretary
First purchase in 12M
1/1
Large purchase ≥ $100k
0/1
Cluster buying · 15D
1/1
Buying the dip · ≥20% below prior 52W high
Not classifiable
Routine / opportunistic
Not classifiable
Lovechio Joseph AVP and CFO
First purchase in 12M
1/1
Large purchase ≥ $100k
0/1
Cluster buying · 15D
0/1
Buying the dip · ≥20% below prior 52W high
Not classifiable
Routine / opportunistic
Not classifiable

Signal outcomes

Calculated from immutable US ranking snapshots; excess return is stock return minus SPY return. Newly saved snapshots remain pending until each forward horizon matures. This never affects the US score.

HorizonStatusResult
5DAwaiting maturity—
20DAwaiting maturity—
60DAwaiting maturity—
120DAwaiting maturity—

Market context

PRICE PERFORMANCE

1M
-17.7%
3M
-11.2%
6M
-8.8%
12M
-45.5%

VOLATILITY & LIQUIDITY

Volatility
46.8%
Beta
—
Avg daily volume
$12.1M

VALUATION

Market cap
—
P/E
—

FUNDAMENTALS

Profit margin
—
ROE
—
Industry
—

Prices to 11 Oct 2026: OpenBB/yfinance; volume from price cache (yfinance). It does not affect the insider score or rank.

Insiders' buying price vs the latest close

The latest close in the price history is more than a week old.

Buying size vs market trading

Complete price and volume history is not yet available.

Market-data coverage: 0 verified sessions · Latest session: — · Ratio status: Unavailable

Traded value is estimated as close × shares traded, in major currency units. Includes disclosed qualifying purchases; disclosures may lag. Contractual or planned acquisitions are not necessarily discretionary. Ratios describe relative trading size, not market participation or score contributions.

Regulatory filings

Unfold all 28 filings

Results and insider purchases

Results (8-K)Bought within 5 sessionsBought within 20 sessionsBuyers, 20 sessions before
2026-08-0507:43 ET · before the openNoneNone0
2026-05-0707:44 ET · before the openNone3 · $823.4KBosway William T; Bolanowski Katherine; Lovechio Joseph A0
2026-02-2607:40 ET · before the openNone2 · $775.1KMETCALF JAMES S; Bosway William T0
2026-01-2107:47 ET · before the openNoneNone0

Results dates are the company's 8-K filings to the SEC under Item 2.02 (results of operations); one filed after the close counts from the next session. Purchases are open-market buys reported on Form 4 (code P), by trade date; a Form 4 can arrive two business days after the trade, so the latest days can still fill in. Facts only; this does not change the score or rank.

Ownership and trading-plan context

Direct / indirect ownershipUnavailable
10b5-1 filing evidenceUnavailable
Evidence retrievedUnavailable

These are accession-level filing fields. Unavailable means the evidence was not fetched or parsed; it is never inferred as “No” and does not adjust the US score.

Filing evidence

These are underlying national-feed records from the 365-day window ending on the saved ranking snapshot. The score uses only the latest 180 days; older qualifying equity purchases remain visible for audit but do not enter the current score. The original filer, role, transaction classification, instrument, price, volume, value and source fields are retained. The first three rows are shown; remaining records can be unfolded for audit. Other transaction types are retained but excluded from the score.

Excluded transactions & classification

6 qualifying purchase disclosure(s) · 8 transaction line(s)

Mar 13, 2026Open market purchase
Bosway William T · President and CEO
Common Stock · 1000.0 shares × 41.37 USD · 41370.0 USD
Open filing
Mar 10, 2026Open market purchase
METCALF JAMES S · Director
Common Stock · 12444.0 shares × 40.35 USD · 502115.4 USD
Open filing
Mar 10, 2026Open market purchase
Bosway William T · President and CEO
Common Stock · 1500.0 shares × 39.53 USD · 59295.0 USD
Open filing
Unfold all 5 remaining filing row(s)
Transaction datePublishedFilerRoleTransactionInstrumentPrice (local currency)Quote currencyVolumeReported value (local currency)Source
2026-03-092026-03-10Bosway William TPresident and CEOOpen market purchaseCommon Stock38.29 USDUSD4500.0172305.0 USDOpen filing
2026-05-262026-05-27Bosway William TPresident and CEOOpen market purchaseCommon Stock37.44 USDUSD19735.0738878.3999999999 USDOpen filing
2026-05-212026-05-22Bolanowski KatherineGeneral Counsel, VP, SecretaryOpen market purchaseCommon Stock35.66 USDUSD144.05135.039999999999 USDOpen filing
2026-05-212026-05-22Bolanowski KatherineGeneral Counsel, VP, SecretaryOpen market purchaseCommon Stock35.63 USDUSD1256.044751.280000000006 USDOpen filing
2026-05-202026-05-21Lovechio Joseph AVP and CFOOpen market purchaseCommon Stock34.62 USDUSD1000.034620.0 USDOpen filing

Showing 8 of 8 matching raw-feed row(s) from the current 365-day research window. Prices and reported values remain in the filing currency and its major unit (for example, UK pence are parsed as GBP). The screen-level $ aggregate is separately FX-normalised for research ranking, not a trade-date conversion.

Other disclosed transactions · excluded from score

View 27 other transaction(s)

Mar 4, 2026Shares withheld for tax or exercise price
Watorek Jeffrey J. · VP and Treasurer
Common Stock · 2962.0 shares × 43.05 USD · 127514.09999999999 USD
Open filing
Mar 4, 2026Shares withheld for tax or exercise price
Catlett Janet Anne · VP, CHRO
Common Stock · 3246.0 shares × 43.05 USD · 139740.3 USD
Open filing
Mar 4, 2026Shares withheld for tax or exercise price
Bolanowski Katherine · General Counsel, VP, Secretary
Common Stock · 2601.0 shares × 43.05 USD · 111973.04999999999 USD
Open filing
Unfold all 24 remaining filing row(s)
Transaction datePublishedFilerRoleTransactionInstrumentPrice (local currency)Quote currencyVolumeReported value (local currency)Source
2026-03-042026-03-05Bosway William TPresident and CEOShares withheld for tax or exercise priceCommon Stock43.05 USDUSD30026.01292619.2999999998 USDOpen filing
2026-03-032026-03-04Watorek Jeffrey J.VP and TreasurerShares withheld for tax or exercise priceCommon Stock43.83 USDUSD117.05128.11 USDOpen filing
2026-03-032026-03-04Catlett Janet AnneVP, CHROShares withheld for tax or exercise priceCommon Stock43.83 USDUSD268.011746.439999999999 USDOpen filing
2026-03-032026-03-04Bolanowski KatherineGeneral Counsel, VP, SecretaryShares withheld for tax or exercise priceCommon Stock43.83 USDUSD286.012535.38 USDOpen filing
2026-03-032026-03-04Lovechio Joseph AVP and CFOShares withheld for tax or exercise priceCommon Stock43.83 USDUSD379.016611.57 USDOpen filing
2026-03-032026-03-04Bosway William TPresident and CEOShares withheld for tax or exercise priceCommon Stock43.83 USDUSD1955.085687.65 USDOpen filing
2026-03-022026-03-04Watorek Jeffrey J.VP and TreasurerGrant or awardCommon Stock0.0 USDUSD1307.00.0 USDOpen filing
2026-03-022026-03-04Catlett Janet AnneVP, CHROGrant or awardCommon Stock0.0 USDUSD3332.00.0 USDOpen filing
2026-03-022026-03-04Bolanowski KatherineGeneral Counsel, VP, SecretaryGrant or awardCommon Stock0.0 USDUSD3410.00.0 USDOpen filing
2026-03-022026-03-04Lovechio Joseph AVP and CFOGrant or awardCommon Stock0.0 USDUSD4840.00.0 USDOpen filing
2026-03-022026-03-04Bosway William TPresident and CEOGrant or awardCommon Stock0.0 USDUSD27801.00.0 USDOpen filing
2026-03-012026-03-03Watorek Jeffrey J.VP and TreasurerShares withheld for tax or exercise priceCommon Stock45.48 USDUSD278.012643.439999999999 USDOpen filing
2026-03-012026-03-03Catlett Janet AnneVP, CHROShares withheld for tax or exercise priceCommon Stock45.48 USDUSD184.08368.32 USDOpen filing
2026-03-012026-03-03Bolanowski KatherineGeneral Counsel, VP, SecretaryShares withheld for tax or exercise priceCommon Stock45.48 USDUSD739.033609.72 USDOpen filing
2026-03-012026-03-03Bosway William TPresident and CEOShares withheld for tax or exercise priceCommon Stock45.48 USDUSD5872.0267058.56 USDOpen filing
2026-05-072026-05-08Mizell Gwendolyn GDirectorGrant or awardCommon Stock37.59 USDUSD3059.0114987.81000000001 USDOpen filing
2026-05-072026-05-08Nish James BDirectorGrant or awardCommon Stock37.59 USDUSD3059.0114987.81000000001 USDOpen filing
2026-05-072026-05-08Myers Linda KristineDirectorGrant or awardCommon Stock37.59 USDUSD3059.0114987.81000000001 USDOpen filing
2026-05-072026-05-08Pope Atlee ValentineDirectorGrant or awardCommon Stock37.59 USDUSD3059.0114987.81000000001 USDOpen filing
2026-05-072026-05-08Shah Manish HDirectorGrant or awardCommon Stock37.59 USDUSD3059.0114987.81000000001 USDOpen filing
2026-05-072026-05-08METCALF JAMES SDirectorGrant or awardCommon Stock37.59 USDUSD3059.0114987.81000000001 USDOpen filing
2026-05-072026-05-08Barberio Mark GDirectorGrant or awardCommon Stock37.59 USDUSD3059.0114987.81000000001 USDOpen filing
2026-04-262026-04-27Catlett Janet AnneVP, CHROShares withheld for tax or exercise priceCommon Stock39.57 USDUSD169.06687.33 USDOpen filing
2026-08-192026-08-20Lovechio Joseph AVP and CFOShares withheld for tax or exercise priceCommon Stock47.85 USDUSD638.030528.3 USDOpen filing

Showing 27 of 27 matching raw-feed row(s) from the current 365-day research window. Prices and reported values remain in the filing currency and its major unit (for example, UK pence are parsed as GBP). The screen-level $ aggregate is separately FX-normalised for research ranking, not a trade-date conversion.

Snapshot & identity

Snapshot date
2026-10-18
Ticker
ROCK
ISIN
—
Sector
Basic Materials
Industry
—

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How to read Form 4 transaction codes

CodeInterpretationScreen treatment
POpen-market / private purchaseBuy evidence when the security is qualifying equity
SSaleSell evidence when the security is qualifying equity
AGrant / awardContext only
FTax-related withholdingContext only
MOption exerciseContext only
GGiftContext only
J / LOther / non-directionalContext only

P/S rows for options, warrants, compensation units and debt remain visible for audit but are excluded from equity scores and quotes.