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

IPG PHOTONICS CORP

IPGP · Nasdaq · CIK 0001111928 · Technology · Semiconductor Equipment & Materials

INSIDER SIGNAL

No active buy signal

1 qualifying P purchase group
in the current 180-day scoring window

54 Form 4 transaction lines observed in the same window
42 sales · 10 option, withholding, award, gift or other lines

Last qualifying purchase2026-08-26 · PEELER JOHN R · $199.4K

WHY NO ACTIVE SIGNAL?

Purchase activityPresent
Recent buying1 qualifying line group(s)
Recent salesHigh
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

QUALIFYING BUYERS1
PURCHASE CONCENTRATION100%Largest buyer: PEELER JOHN R · $199.4K
CLUSTER BUYING · 15D1 insiderPeak activity: 2026-08-26–2026-08-26

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

Insider activity timeline

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

AprMayJunJulAugSepOct
IP FIBRE DEVICES LTDTenPercentOwner
▼▼▼▼▼
Valentin Gapontsev Trust ITenPercentOwner
▼▼▼
SCHERBAKOV EUGENE ADirector,TenPercentOwner
▼▼▼
Agnes TangDirector
○▼
Desmond Jeanmarie F.Director
○▼
PEELER JOHN RDirector
○●
● Purchase▼ Sale○ Other

Showing the six most active owners; 9 additional owner(s) remain in Form 4 evidence.

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: 2026-08-26 · PEELER JOHN R.

Recent Form 4 activity

2Purchases
142Sales
31Other Form 4 lines
65SEC filings · 365 days
BUYING2 qualifying P line(s) · 180 days
SELLING42 sale line(s) · context only
OTHER10 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
3,725,196
Previous report
3,439,518
Avg daily volume
433,668
Days to cover
8.6

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

Qualifying code P transactions in the local Form 4 history, including purchases outside the current signal window.

Transaction dateReporting ownerTypeSecuritySharesAvg. priceApprox. valueSource
2026-08-26PEELER JOHN RPurchase (P)Common Stock2,710USD 73.58USD 199,400SEC filing ↗
2022-06-16Mammen Timothy PVPurchase (P)Common Stock3,000USD 83.54USD 250,620SEC filing ↗

Form 4 evidence

175 transaction lines in the latest 365-day window; 823 in local history.

DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-10-02SCHERBAKOV EUGENE ASale (S)Common Stock3,048USD 85.30USD 259,994SEC filing ↗
2026-10-02IP FIBRE DEVICES LTDSale (S)Common Stock15,361USD 85.64USD 1,315,515SEC filing ↗
2026-09-02Valentin Gapontsev Trust ISale (S)Common Stock9,306USD 75.95USD 706,828SEC filing ↗
Show recent Form 4 evidence (30 grouped rows)
DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-10-02SCHERBAKOV EUGENE ASale (S)Common Stock3,048USD 85.30USD 259,994SEC filing ↗
2026-10-02IP FIBRE DEVICES LTDSale (S)Common Stock15,361USD 85.64USD 1,315,515SEC filing ↗
2026-09-02Valentin Gapontsev Trust ISale (S)Common Stock9,306USD 75.95USD 706,828SEC filing ↗
2026-09-01Valentin Gapontsev Trust ISale (S)Common Stock18,091USD 75.14USD 1,359,358SEC filing ↗
2026-08-26PEELER JOHN RPurchase (P)Common Stock2,710USD 73.58USD 199,400SEC filing ↗
2026-08-08Bucher PaulusTax withholding (F)Common Stock663USD 90.23USD 59,822SEC filing ↗
2026-08-05IP FIBRE DEVICES LTDSale (S)Common Stock18,111USD 96.12USD 1,740,761SEC filing ↗
2026-08-04IP FIBRE DEVICES LTDSale (S)Common Stock12,202USD 95.18USD 1,161,386SEC filing ↗
2026-07-31SCHERBAKOV EUGENE ASale (S)Common Stock1,524USD 86.61USD 131,994SEC filing ↗
2026-07-31IP FIBRE DEVICES LTDSale (S)Common Stock27,000USD 85.81USD 2,316,899SEC filing ↗
2026-07-21Valentin Gapontsev Trust ISale (S)Common Stock56,316USD 102.31USD 5,761,475SEC filing ↗
2026-06-29SCHERBAKOV EUGENE ASale (S)Common Stock1,524USD 101.55USD 154,757SEC filing ↗
2026-06-29Lopresti Angelo PSale (S)Common Stock1,000USD 110.33USD 110,330SEC filing ↗
2026-06-29IP FIBRE DEVICES LTDSale (S)Common Stock65,700USD 103.64USD 6,809,233SEC filing ↗
2026-06-22Agnes TangSale (S)Common Stock1,511USD 117.85USD 178,078SEC filing ↗
2026-06-05Gitin Mark MiltonTax withholding (F)Common Stock4,641USD 107.37USD 498,304SEC filing ↗
2026-05-22Mammen Timothy PVSale (S)Common Stock9,975USD 119.81USD 1,195,098SEC filing ↗
2026-05-14Desmond Jeanmarie F.Sale (S)Common Stock1,690USD 105.58USD 178,430SEC filing ↗
2026-05-12Pavlova Natalia; Samartsev IgorAward / grant (A)Common Stock2,436USD 0.00USD 0SEC filing ↗
2026-05-12PEELER JOHN RAward / grant (A)Common Stock2,436USD 0.00USD 0SEC filing ↗
2026-05-12Meurice EricAward / grant (A)Common Stock2,436USD 0.00USD 0SEC filing ↗
2026-05-12KENNEDY KOLLEEN TAward / grant (A)Common Stock2,436USD 0.00USD 0SEC filing ↗
2026-05-12Dougherty GregAward / grant (A)Common Stock2,436USD 0.00USD 0SEC filing ↗
2026-05-12Desmond Jeanmarie F.Award / grant (A)Common Stock2,436USD 0.00USD 0SEC filing ↗
2026-05-12Beecher Gregory RAward / grant (A)Common Stock2,436USD 0.00USD 0SEC filing ↗
2026-05-12Agnes TangAward / grant (A)Common Stock2,436USD 0.00USD 0SEC filing ↗
2026-03-17Buttarazzi Mary E.Sale (S)Common Stock500USD 116.22USD 58,110SEC filing ↗
2026-03-01SCHERBAKOV EUGENE ATax withholding (F)Common Stock7,237USD 131.57USD 952,172SEC filing ↗
2026-03-01Pavlova Natalia; Samartsev IgorTax withholding (F)Common Stock836USD 131.57USD 109,993SEC filing ↗
2026-03-01Ness TrevorTax withholding (F)Common Stock3,402USD 131.57USD 447,601SEC 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 · —
TickerIPGP
CIK0001111928
SectorTechnology
IndustrySemiconductor Equipment & Materials Yahoo Finance
SEC SIC3674 Semiconductors & Related Devices
ExchangeNasdaq

Data coverage

Local Form 4 history823 transaction lines from 2020-02-19 to 2026-10-02
3 P purchase lines · 522 S sale lines · 298 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.