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

LIGHTBRIDGE Corp

LTBR · Nasdaq · CIK 0001084554 · Basic Materials · Electrical Equipment & Parts

INSIDER SIGNAL

No active buy signal

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

21 Form 4 transaction lines observed in the same window
6 sales · 15 option, withholding, award, gift or other lines

Last qualifying purchase2023-01-13 · AK Jensen Investment Management Ltd · $90.4K

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
Goodman SherriDirector
▼▼○▼
Chakraborty SwetaDirector
▼○▼
MUSHAKOV ANDREYEVP & Chief Operating Officer
○○
GRAE SETHPresident and CEO
○○
Holcombe Scott RandallSVP & Chief Technology Officer
○○
GOLDMAN LARRYCFO
○○
● Purchase▼ Sale○ Other

Showing the six most active owners; 3 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: 2023-01-13 · AK Jensen Investment Management Ltd.

Recent Form 4 activity

0Purchases
19Sales
35Other Form 4 lines
45SEC filings · 365 days
BUYING0 qualifying P line(s) · 180 days
SELLING6 sale line(s) · context only
OTHER15 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
4,107,390
Previous report
4,895,179
Avg daily volume
1,030,475
Days to cover
4.0

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
2023-01-13AK Jensen Investment Management LtdPurchase (P)Common Stock20,000USD 4.52USD 90,400SEC filing ↗
2023-01-12AK Jensen Investment Management LtdPurchase (P)Common Stock38,198USD 4.57USD 174,565SEC filing ↗
2023-01-11AK Jensen Investment Management LtdPurchase (P)Common Stock, par value $0.001 per share ("Common Stock")17,149USD 4.70USD 80,600SEC filing ↗

Form 4 evidence

54 transaction lines in the latest 365-day window; 334 in local history.

DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-10-01Goodman SherriSale (S)Common Stock1,116USD 6.29USD 7,020SEC filing ↗
2026-09-01Chakraborty SwetaSale (S)Common Stock717USD 7.43USD 5,327SEC filing ↗
2026-08-28MUSHAKOV ANDREYTax withholding (F)Common Stock6,817USD 7.55USD 51,468SEC filing ↗
Show recent Form 4 evidence (30 grouped rows)
DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-10-01Goodman SherriSale (S)Common Stock1,116USD 6.29USD 7,020SEC filing ↗
2026-09-01Chakraborty SwetaSale (S)Common Stock717USD 7.43USD 5,327SEC filing ↗
2026-08-28MUSHAKOV ANDREYTax withholding (F)Common Stock6,817USD 7.55USD 51,468SEC filing ↗
2026-08-28Holcombe Scott RandallTax withholding (F)Common Stock3,833USD 7.55USD 28,939SEC filing ↗
2026-08-28GRAE SETHTax withholding (F)Common Stock10,930USD 7.55USD 82,522SEC filing ↗
2026-08-28GOLDMAN LARRYTax withholding (F)Common Stock7,139USD 7.55USD 53,899SEC filing ↗
2026-08-11Tobin Mark RobertSale (S)Common Stock15,000USD 8.99USD 134,850SEC filing ↗
2026-08-06Tobin Mark RobertAward / grant (A)Common Stock10,000USD 0.00USD 0SEC filing ↗
2026-08-06MUSHAKOV ANDREYAward / grant (A)Common Stock84,000USD 0.00USD 0SEC filing ↗
2026-08-06MAGRAW DANIEL BAward / grant (A)Common Stock10,000USD 0.00USD 0SEC filing ↗
2026-08-06Holcombe Scott RandallAward / grant (A)Common Stock69,000USD 0.00USD 0SEC filing ↗
2026-08-06Goodman SherriAward / grant (A)Common Stock10,000USD 0.00USD 0SEC filing ↗
2026-08-06GRAE SETHAward / grant (A)Common Stock105,000USD 0.00USD 0SEC filing ↗
2026-08-06GOLDMAN LARRYAward / grant (A)Common Stock65,000USD 0.00USD 0SEC filing ↗
2026-08-06Funches Jesse L.Award / grant (A)Common Stock10,000USD 0.00USD 0SEC filing ↗
2026-08-06Chakraborty SwetaAward / grant (A)Common Stock10,000USD 0.00USD 0SEC filing ↗
2026-07-01Chakraborty SwetaSale (S)Common Stock1,143USD 9.29USD 10,618SEC filing ↗
2026-07-01Goodman SherriSale (S)Common Stock1,116USD 9.29USD 10,368SEC filing ↗
2026-06-22Goodman SherriSale (S)Common Stock1,116USD 9.58USD 10,691SEC filing ↗
2026-04-03MUSHAKOV ANDREYTax withholding (F)Common Stock8,597USD 11.09USD 95,341SEC filing ↗
2026-04-03GRAE SETHTax withholding (F)Common Stock13,256USD 11.09USD 147,009SEC filing ↗
2026-04-03GOLDMAN LARRYTax withholding (F)Common Stock9,013USD 11.09USD 99,954SEC filing ↗
2026-01-29MUSHAKOV ANDREYSale (S)Common Stock30,289USD 16.57USD 501,919SEC filing ↗
2026-01-15GOLDMAN LARRYSale (S)Common Stock6,350USD 18.07USD 114,744SEC filing ↗
2026-01-14GOLDMAN LARRYSale (S)Common Stock2,519USD 18.00USD 45,342SEC filing ↗
2026-01-09Funches Jesse L.Sale (S)Common Stock1,449USD 16.96USD 24,575SEC filing ↗
2026-01-06Chakraborty SwetaSale (S)Common Stock1,245USD 15.68USD 19,522SEC filing ↗
2026-01-02Tobin Mark RobertAward / grant (A)Common Stock10,631USD 0.00USD 0SEC filing ↗
2026-01-02MAGRAW DANIEL BAward / grant (A)Common Stock10,631USD 0.00USD 0SEC filing ↗
2026-01-02Goodman SherriAward / grant (A)Common Stock10,631USD 0.00USD 0SEC 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 · —
TickerLTBR
CIK0001084554
SectorBasic Materials
IndustryElectrical Equipment & Parts Yahoo Finance
SEC SIC2810 Industrial Inorganic Chemicals
ExchangeNasdaq

Data coverage

Local Form 4 history334 transaction lines from 2020-07-06 to 2026-10-01
3 P purchase lines · 51 S sale lines · 280 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.