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

COLUMBUS MCKINNON CORP

CMCO · Nasdaq · CIK 0001005229 · Industrials · Farm & Heavy Construction Machinery

INSIDER SIGNAL

52.8 / 100

2 buyers · 2 purchase transaction lines · $194.7K gross purchase

WHY THIS SIGNAL?

Buyer breadthLow
Purchase sizeLow
RoleModerate
RecencyLow
ConvictionStrong
Score anatomy

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

Cluster+14.0 / 35
Purchase size+10.0 / 25
Role+15.0 / 20
Recency+3.7 / 10
Conviction+10.0 / 10

What is holding the score back?

  • ⚠ Cluster breadth is moderate · 2 insider(s), not 4+
  • ⚠ Purchase size is modest relative to the model scale
  • ⚠ Purchase activity is becoming less recent
  • ✓ Role scores high · most senior buyer: EVP, Finance and CFO

Purchase-size comments are relative to the model scale. Average daily volume is a separate market-context diagnostic.

US-v1.2 ranks qualifying equity purchases under the current 180-day rules. The score is a research priority, not a return forecast or probability. Backtests have not shown that a higher US score is followed by better returns.

Insider activity timeline

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

AprMayJunJulAugSepOct
Rustowicz Gregory PExecutive VP Finance, CFO
○○○○○○
Wilson David J.President & CEO
○○○○○
Williams AdrienneSr. Vice President & CHRO
○○○○○
Ramos Lara Mario Y.CPTO and GM Latin America
○○○○○
Paradowski Mark RSr VP Information Services&CDO
○○○○○
Korman Alan SSr VP, Gen'l Counsel & Sec
○○○○○
● Purchase▼ Sale○ Other

Showing the six most active owners; 12 additional owner(s) remain in Form 4 evidence.

Purchase breadth & concentration

QUALIFYING BUYERS2
PURCHASE CONCENTRATION76%Largest buyer: Linker John R · $147.5K
CLUSTER BUYING · 15D1 insiderPeak activity: 2026-07-31–2026-07-31

Roles in the peak window: EVP, Finance and CFO. Concentration uses priced qualifying P lines only and does not change the saved score.

SIGNAL HISTORY

52.8 / 100

Latest recorded score

↓ -0.1 ptsversus the previous recorded snapshot
  1. 53.1
  2. 53.1
  3. 53.0
  4. 52.9
  5. 52.8

Only scores saved when a full US scoring run completed are shown; gaps are not reconstructed.

Recent Form 4 activity

2Purchases
5Sales
79Other Form 4 lines
67SEC filings · 365 days
BUYING2 qualifying P line(s) · 180 days
SELLING0 sale line(s) · context only
OTHER60 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 provides additional background on recent price performance and risk. It does not affect the Insider Signal.

Price performance

1M
-7.1%
3M
+23.1%
6M
+2.0%
12M
+4.4%

Volatility & liquidity

Volatility
68.3%
Beta
—
Avg daily value
USD 8.5M

Valuation

Market cap
USD 461.0M
P/E
—

Fundamentals

Profit margin
-19.2%
ROE
-15.8%
Industry
Farm & Heavy Construction Machinery

Market data

Price data up to: 2026-10-11 · Price source: OpenBB/yfinance; volume from price cache (yfinance) · From SEC filings: Market cap, Profit margin, ROE · Fiscal year ended: 2026-03-31 · Market cap is the shares outstanding stated on the filing cover multiplied by the latest close. Share count date: 2026-06-04 · Status: PASS

Short interest

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

Shares short
2,222,251
Previous report
2,277,992
Avg daily volume
468,661
Days to cover
4.7

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
2026-08-20STEPHENS CHRISTOPHER JPurchase (P)Common Stock2,750USD 17.14USD 47,135SEC filing ↗
2026-07-31Linker John RPurchase (P)Common Stock7,500USD 19.67USD 147,525SEC filing ↗
2025-06-05Yeung RebeccaPurchase (P)Common Stock1,000USD 15.03USD 15,030SEC filing ↗
2025-06-02Beliveau-Dunn JeannePurchase (P)Common Stock1,000USD 13.89USD 13,890SEC filing ↗
2025-03-19Bohl Kathryn VPurchase (P)Common Stock2,819USD 17.99USD 50,714SEC filing ↗
2025-03-14Beliveau-Dunn JeannePurchase (P)Common Stock160USD 18.34USD 2,934SEC filing ↗
2025-03-06Chintapalli AppalPurchase (P)Common Stock6,000USD 16.96USD 101,760SEC filing ↗
2025-03-03Abraham Chad RPurchase (P)Common Stock15,000USD 16.05USD 240,800SEC filing ↗
2025-02-21Dastoor MichaelPurchase (P)Common Stock10,000USD 19.21USD 192,100SEC filing ↗
2025-02-14Wilson David J.Purchase (P)Common Stock10,857USD 20.50USD 222,568SEC filing ↗
2025-02-13STEPHENS CHRISTOPHER JPurchase (P)Common Stock5,000USD 20.27USD 101,350SEC filing ↗
2025-02-13COLELLA GERARD GPurchase (P)Common Stock5,500USD 20.47USD 112,585SEC filing ↗
2024-11-14STEPHENS CHRISTOPHER JPurchase (P)Common Stock1,000USD 37.34USD 37,340SEC filing ↗
2024-11-01Wilson David J.Purchase (P)Common Stock31,300USD 32.02USD 1,002,155SEC filing ↗
2024-08-19Paradowski Mark RPurchase (P)Common Stock5USD 32.90USD 164SEC filing ↗

Form 4 evidence

86 transaction lines in the latest 365-day window; 827 in local history.

DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-08-20STEPHENS CHRISTOPHER JPurchase (P)Common Stock2,750USD 17.14USD 47,135SEC filing ↗
2026-08-17Yeung RebeccaAward / grant (A)Common Stock7,590USD 19.11USD 145,045SEC filing ↗
2026-08-17Wilson David J.Award / grant (A)Common Stock54,268USD 0.00USD 0SEC filing ↗
Show recent Form 4 evidence (30 grouped rows)
DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-08-20STEPHENS CHRISTOPHER JPurchase (P)Common Stock2,750USD 17.14USD 47,135SEC filing ↗
2026-08-17Yeung RebeccaAward / grant (A)Common Stock7,590USD 19.11USD 145,045SEC filing ↗
2026-08-17Wilson David J.Award / grant (A)Common Stock54,268USD 0.00USD 0SEC filing ↗
2026-08-17Williams AdrienneAward / grant (A)Common Stock6,431USD 0.00USD 0SEC filing ↗
2026-08-17Sleeper Nathan KAward / grant (A)Common Stock7,590USD 19.11USD 145,045SEC filing ↗
2026-08-17Ramos Lara Mario Y.Award / grant (A)Common Stock6,722USD 0.00USD 0SEC filing ↗
2026-08-17Paradowski Mark RAward / grant (A)Common Stock5,439USD 0.00USD 0SEC filing ↗
2026-08-17Oddo Thomas PatrickAward / grant (A)Common Stock5,136USD 0.00USD 0SEC filing ↗
2026-08-17Linker John RAward / grant (A)Common Stock13,415USD 0.00USD 0SEC filing ↗
2026-08-17LAMACH MICHAEL WAward / grant (A)Common Stock7,590USD 0.00USD 0SEC filing ↗
2026-08-17Korman Alan SAward / grant (A)Common Stock9,084USD 0.00USD 0SEC filing ↗
2026-08-17Dastoor MichaelAward / grant (A)Common Stock7,590USD 19.11USD 145,045SEC filing ↗
2026-08-17Chintapalli AppalAward / grant (A)Common Stock9,419USD 0.00USD 0SEC filing ↗
2026-08-17Campelli AndrewAward / grant (A)Common Stock7,590USD 19.11USD 145,045SEC filing ↗
2026-08-17COLELLA GERALD GAward / grant (A)Common Stock7,590USD 19.11USD 145,045SEC filing ↗
2026-08-17Adams JonAward / grant (A)Common Stock6,526USD 0.00USD 0SEC filing ↗
2026-07-31Linker John RPurchase (P)Common Stock7,500USD 19.67USD 147,525SEC filing ↗
2026-07-08Rustowicz Gregory PTax withholding (F)Common Stock4,661USD 12.92USD 60,220SEC filing ↗
2026-07-08Rustowicz Gregory PAward / grant (A)Common Stock21,983USD 0.00USD 0SEC filing ↗
2026-06-01Aghili AzizOption exercise / conversion (M)Common Stock3,283USD 0.00USD 0SEC filing ↗
2026-05-22Wilson David J.Tax withholding (F)Common Stock4,863USD 14.88USD 72,361SEC filing ↗
2026-05-22Williams AdrienneTax withholding (F)Common Stock390USD 14.88USD 5,803SEC filing ↗
2026-05-22Rustowicz Gregory PTax withholding (F)Common Stock1,189USD 14.88USD 17,692SEC filing ↗
2026-05-22Ramos Lara Mario Y.Tax withholding (F)Common Stock390USD 14.88USD 5,803SEC filing ↗
2026-05-22Paradowski Mark RTax withholding (F)Common Stock472USD 14.88USD 7,023SEC filing ↗
2026-05-22Korman Alan STax withholding (F)Common Stock552USD 14.88USD 8,214SEC filing ↗
2026-05-22Chintapalli AppalTax withholding (F)Common Stock491USD 14.88USD 7,306SEC filing ↗
2026-05-22Adams JonTax withholding (F)Common Stock296USD 14.88USD 4,404SEC filing ↗
2026-05-20Wilson David J.Tax withholding (F)Common Stock3,189USD 14.09USD 44,933SEC filing ↗
2026-05-20Williams AdrienneTax withholding (F)Common Stock243USD 14.09USD 3,424SEC 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 · —
TickerCMCO
CIK0001005229
SectorIndustrials
IndustryFarm & Heavy Construction Machinery Yahoo Finance
SEC SIC3531 Construction Machinery & Equip
ExchangeNasdaq

Data coverage

Local Form 4 history827 transaction lines from 2020-01-10 to 2026-08-20
27 P purchase lines · 42 S sale lines · 758 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.