Stock Trading Canary

United States · SEC Form 4 · Snapshot date: 2026-10-19 · Built: 2026-10-19 · 中文

← United States · Coverage record

US · SEC FORM 4

Cambium Networks Corp

CMBMF · OTC · CIK 0001738177 · Technology · Communication Equipment

INSIDER SIGNAL

No active buy signal

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

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

Last qualifying purchase2023-12-07 · Verma Vikram · $2.3K

WHY NO ACTIVE SIGNAL?

Purchase activityNone
Recent buyingNone
Recent salesNone
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.

Purchase breadth, concentration & cluster buying

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

Insider activity timeline

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

AprMayJunJulAugSepOct
Kurk Morgan C SPresident and CEO
○○
Cada-Bartoli Melissa ElizabethGlobal Controller and CAO
○
Vivek VibhuSenior VP, Products
○
● Purchase▼ Sale○ Other

—

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: 2023-12-07 · Verma Vikram.

Recent Form 4 activity

0Purchases
0Sales
10Other Form 4 lines
10SEC filings · 365 days
BUYING0 qualifying P line(s) · 180 days
SELLING0 sale line(s) · context only
OTHER4 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
291,235
Previous report
500,197
Avg daily volume
162,613
Days to cover
1.8

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
2023-12-07Verma VikramPurchase (P)Ordinary Shares500USD 4.58USD 2,290SEC filing ↗
2023-12-06Verma VikramPurchase (P)Ordinary Shares1,000USD 4.60USD 4,600SEC filing ↗
2023-12-05Verma VikramPurchase (P)Ordinary Shares1,500USD 4.61USD 6,915SEC filing ↗
2023-12-04Verma VikramPurchase (P)Ordinary Shares1,000USD 4.75USD 4,750SEC filing ↗
2023-11-16Lynch Kevin JPurchase (P)Ordinary Shares15,569USD 4.03USD 62,743SEC filing ↗
2023-11-15Nirwan ArchanaPurchase (P)Ordinary Shares4,874USD 4.13USD 20,130SEC filing ↗
2023-08-23Kurk Neal MPurchase (P)Common Stock11,250USD 8.82USD 99,225SEC filing ↗
2020-06-10Sheppeck BryanPurchase (P)Ordinary Shares4,000USD 5.73USD 22,920SEC filing ↗
2020-03-13Imhoff ScottPurchase (P)Ordinary Shares1,000USD 4.03USD 4,030SEC filing ↗
2020-02-14Bhatnagar AtulPurchase (P)Ordinary Shares14,815USD 6.23USD 92,297SEC filing ↗

Form 4 evidence

10 transaction lines in the latest 365-day window; 187 in local history.

DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-08-18Kurk Morgan C STax withholding (F)Ordinary Shares1,780USD 0.16USD 285SEC filing ↗
2026-07-10Vivek VibhuTax withholding (F)Ordinary Shares898USD 0.25USD 224SEC filing ↗
2026-06-01Cada-Bartoli Melissa ElizabethTax withholding (F)Ordinary Shares59USD 0.30USD 18SEC filing ↗
Show recent Form 4 evidence (10 grouped rows)
DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-08-18Kurk Morgan C STax withholding (F)Ordinary Shares1,780USD 0.16USD 285SEC filing ↗
2026-07-10Vivek VibhuTax withholding (F)Ordinary Shares898USD 0.25USD 224SEC filing ↗
2026-06-01Cada-Bartoli Melissa ElizabethTax withholding (F)Ordinary Shares59USD 0.30USD 18SEC filing ↗
2026-05-18Kurk Morgan C STax withholding (F)Ordinary Shares1,721USD 0.29USD 499SEC filing ↗
2026-04-10Vivek VibhuTax withholding (F)Ordinary Shares1,030USD 0.10USD 103SEC filing ↗
2026-02-27Cada-Bartoli Melissa ElizabethTax withholding (F)Ordinary Shares59USD 1.12USD 66SEC filing ↗
2026-02-18Kurk Morgan C STax withholding (F)Ordinary Shares2,109USD 1.21USD 2,552SEC filing ↗
2026-01-10Vivek VibhuTax withholding (F)Ordinary Shares895USD 1.49USD 1,334SEC filing ↗
2025-12-01Cada-Bartoli Melissa ElizabethTax withholding (F)Ordinary Shares50USD 1.83USD 92SEC filing ↗
2025-11-18Kurk Morgan C STax withholding (F)Ordinary Shares1,788USD 2.61USD 4,667SEC 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 date2026-10-19
Ranking versionUS-v1.2
Data qualityPASS ELIGIBLE · —
TickerCMBMF
CIK0001738177
SectorTechnology
IndustryCommunication Equipment Yahoo Finance
SEC SIC3663 Radio & Tv Broadcasting & Communications Equipment
ExchangeOTC

Data coverage

Local Form 4 history187 transaction lines from 2020-01-24 to 2026-08-18
10 P purchase lines · 63 S sale lines · 114 other lines
SEC company submissionsOpen SEC filings ↗

Local ledger as of 2026-10-19. Mapping status is an audit field and does not erase SEC filing evidence.