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

POWER INTEGRATIONS INC

POWI · Nasdaq · CIK 0000833640 · Technology · Semiconductors

INSIDER SIGNAL

No active buy signal

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

19 Form 4 transaction lines observed in the same window
12 sales · 7 option, withholding, award, gift or other lines

Last qualifying purchaseNo qualifying purchase is present in the local Form 4 history.

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
BALAKRISHNAN BALUDirector
▼▼▼
BRATHWAITE NICHOLASDirector
▼▼▼
Gupta SunilSr. Vice President, Operations
▼▼
Balow MichaelSr. VP, Worldwide Sales
○
Lloyd Jennifer APresident and CEO
▼
LOWE GREGG ADirector
○
● Purchase▼ Sale○ Other

Showing the six most active owners; 5 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.—

Recent Form 4 activity

0Purchases
35Sales
17Other Form 4 lines
33SEC filings · 365 days
BUYING0 qualifying P line(s) · 180 days
SELLING12 sale line(s) · context only
OTHER7 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
5,484,575
Previous report
5,878,245
Avg daily volume
827,421
Days to cover
6.6

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

No qualifying code P equity purchase is present in the local Form 4 history.

Form 4 evidence

52 transaction lines in the latest 365-day window; 748 in local history.

DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-07-22Lloyd Jennifer ASale (S)Common Stock12,690USD 73.73USD 935,634SEC filing ↗
2026-07-01Vig RaviAward / grant (A)Common Stock2,491USD 0.00USD 0SEC filing ↗
2026-07-01LOWE GREGG AAward / grant (A)Common Stock2,491USD 0.00USD 0SEC filing ↗
Show recent Form 4 evidence (30 grouped rows)
DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-07-22Lloyd Jennifer ASale (S)Common Stock12,690USD 73.73USD 935,634SEC filing ↗
2026-07-01Vig RaviAward / grant (A)Common Stock2,491USD 0.00USD 0SEC filing ↗
2026-07-01LOWE GREGG AAward / grant (A)Common Stock2,491USD 0.00USD 0SEC filing ↗
2026-07-01IYER BALAKRISHNAN SAward / grant (A)Common Stock2,491USD 0.00USD 0SEC filing ↗
2026-07-01Gioia Nancy LeeAward / grant (A)Common Stock2,491USD 0.00USD 0SEC filing ↗
2026-07-01Ganti AnitaAward / grant (A)Common Stock2,491USD 0.00USD 0SEC filing ↗
2026-07-01Arienzo WendyAward / grant (A)Common Stock2,491USD 0.00USD 0SEC filing ↗
2026-05-29Gupta SunilSale (S)Common Stock6,860USD 83.67USD 573,976SEC filing ↗
2026-05-28BALAKRISHNAN BALUSale (S)Common Stock124,287USD 86.44USD 10,742,954SEC filing ↗
2026-05-27BRATHWAITE NICHOLASSale (S)Common Stock1,728USD 86.62USD 149,679SEC filing ↗
2026-05-26Gupta SunilSale (S)Common Stock15,894USD 82.18USD 1,306,169SEC filing ↗
2026-05-26BRATHWAITE NICHOLASSale (S)Common Stock6,655USD 82.71USD 550,435SEC filing ↗
2026-05-26BALAKRISHNAN BALUSale (S)Common Stock118,573USD 81.72USD 9,690,157SEC filing ↗
2026-05-21BALAKRISHNAN BALUSale (S)Common Stock53,880USD 70.71USD 3,809,855SEC filing ↗
2026-05-15Balow MichaelAward / grant (A)Common Stock32,768USD 0.00USD 0SEC filing ↗
2026-05-13BRATHWAITE NICHOLASSale (S)Common Stock6,895USD 72.41USD 499,267SEC filing ↗
2026-04-02Jain GaganSale (S)Common Stock313USD 51.93USD 16,254SEC filing ↗
2026-02-27Lloyd Jennifer AAward / grant (A)Common Stock73,038USD 0.00USD 0SEC filing ↗
2026-02-25Jain GaganSale (S)Common Stock3,481USD 48.23USD 167,875SEC filing ↗
2026-02-10Gupta SunilSale (S)Common Stock1,272USD 45.97USD 58,474SEC filing ↗
2026-02-10BALAKRISHNAN BALUSale (S)Common Stock4,995USD 47.20USD 235,764SEC filing ↗
2026-02-09Lloyd Jennifer ASale (S)Common Stock3,322USD 46.57USD 154,706SEC filing ↗
2026-02-09Jain GaganD (D)Common Stock938USD 46.57USD 43,683SEC filing ↗
2026-02-09Gupta SunilSale (S)Common Stock1,401USD 46.57USD 65,245SEC filing ↗
2026-02-09BALAKRISHNAN BALUSale (S)Common Stock6,368USD 46.53USD 296,303SEC filing ↗
2026-02-06Lloyd Jennifer AAward / grant (A)Common Stock5,885USD 0.00USD 0SEC filing ↗
2026-02-06Jain GaganAward / grant (A)Common Stock2,534USD 0.00USD 0SEC filing ↗
2026-02-06Gupta SunilAward / grant (A)Common Stock3,840USD 0.00USD 0SEC filing ↗
2026-02-06BALAKRISHNAN BALUAward / grant (A)Common Stock12,288USD 0.00USD 0SEC filing ↗
2026-02-03Jain GaganSale (S)Common Stock157USD 45.58USD 7,156SEC 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 · —
TickerPOWI
CIK0000833640
SectorTechnology
IndustrySemiconductors Yahoo Finance
SEC SIC3674 Semiconductors & Related Devices
ExchangeNasdaq

Data coverage

Local Form 4 history748 transaction lines from 2020-01-02 to 2026-07-22
0 P purchase lines · 521 S sale lines · 227 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.