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

PREFORMED LINE PRODUCTS CO

PLPC · Nasdaq · CIK 0000080035 · Industrials · Electrical Equipment & Parts

INSIDER SIGNAL

No active buy signal

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

14 Form 4 transaction lines observed in the same window
3 sales · 11 option, withholding, award, gift or other lines

Last qualifying purchase2023-04-21 · GIBBONS MICHAEL E · $1.5K

WHY NO ACTIVE SIGNAL?

Purchase activityNone
Recent buyingNone
Recent salesLow
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
RUHLMAN RANDALL MTenPercentOwner
○▼▼
Ruhlman Jon RyanPresident
○○
Morcos Assaad AVP, US Manufacturing
○○
Klaus Andrew SCFO
○
O'Shaughnessy TimothyV.P. Human Resources
○
Olenik John JVP-Research & Engineering
○
● Purchase▼ Sale○ Other

Showing the six most active owners; 4 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: 2023-04-21 · GIBBONS MICHAEL E.

Recent Form 4 activity

0Purchases
3Sales
63Other Form 4 lines
49SEC filings · 365 days
BUYING0 qualifying P line(s) · 180 days
SELLING3 sale line(s) · context only
OTHER11 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
139,596
Previous report
148,104
Avg daily volume
75,232
Days to cover
1.9

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
2023-04-21GIBBONS MICHAEL EPurchase (P)Common shares, $2 par value12USD 127.69USD 1,532SEC filing ↗
2023-01-30GIBBONS MICHAEL EPurchase (P)Common shares, $2 par value17USD 87.50USD 1,488SEC filing ↗
2022-10-21GIBBONS MICHAEL EPurchase (P)Common shares, $2 par value19USD 74.03USD 1,407SEC filing ↗
2022-09-14Wensink Katherine E.Purchase (P)Common shares, $2 par value810,400USD 44.40USD 35,981,760SEC filing ↗
2022-09-14RUHLMAN ROBERT GPurchase (P)Common shares, $2 par value810,400USD 44.40USD 35,981,760SEC filing ↗
2022-09-14RUHLMAN RANDALL MPurchase (P)Common shares, $2 par value810,400USD 44.40USD 35,981,760SEC filing ↗
2022-07-22GIBBONS MICHAEL EPurchase (P)Common shares, $2 par value24USD 61.05USD 1,465SEC filing ↗
2022-04-21GIBBONS MICHAEL EPurchase (P)Common shares, $2 par value23USD 63.42USD 1,459SEC filing ↗
2022-01-20GIBBONS MICHAEL EPurchase (P)Common shares, $2 par value21USD 60.74USD 1,276SEC filing ↗
2021-10-20GIBBONS MICHAEL EPurchase (P)Common shares, $2 par value19USD 67.09USD 1,275SEC filing ↗
2021-07-20Klaus Andrew SPurchase (P)Common shares, $2 par value11USD 72.10USD 793SEC filing ↗
2021-07-20GIBBONS MICHAEL EPurchase (P)Common shares, $2 par value17USD 71.91USD 1,222SEC filing ↗
2021-04-20Klaus Andrew SPurchase (P)Common shares, $2 par value12USD 68.21USD 819SEC filing ↗
2021-04-20GIBBONS MICHAEL EPurchase (P)Common shares, $2 par value19USD 68.88USD 1,309SEC filing ↗
2021-01-21GIBBONS MICHAEL EPurchase (P)Common shares, $2 par value16USD 68.63USD 1,098SEC filing ↗

Form 4 evidence

66 transaction lines in the latest 365-day window; 423 in local history.

DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-09-08RUHLMAN RANDALL MSale (S)Common shares, $2 par value5,000USD 407.78USD 2,038,900SEC filing ↗
2026-09-04RUHLMAN RANDALL MSale (S)Common shares, $2 par value142USD 400.04USD 56,806SEC filing ↗
2026-08-05CORLETT GLEN ESale (S)Common shares, $2 par value2,000USD 457.02USD 914,040SEC filing ↗
Show recent Form 4 evidence (30 grouped rows)
DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-09-08RUHLMAN RANDALL MSale (S)Common shares, $2 par value5,000USD 407.78USD 2,038,900SEC filing ↗
2026-09-04RUHLMAN RANDALL MSale (S)Common shares, $2 par value142USD 400.04USD 56,806SEC filing ↗
2026-08-05CORLETT GLEN ESale (S)Common shares, $2 par value2,000USD 457.02USD 914,040SEC filing ↗
2026-08-03RUHLMAN RANDALL MJ (J)Common shares, $2 par value9,121USD 358.15USD 3,266,686SEC filing ↗
2026-06-12Klaus Andrew SD (D)Common shares, $2 par value635USD 362.22USD 230,010SEC filing ↗
2026-06-11Ruhlman Jon RyanD (D)Common shares, $2 par value1,000USD 360.68USD 360,680SEC filing ↗
2026-06-10Olenik John JD (D)Common shares, $2 par value1,000USD 360.91USD 360,910SEC filing ↗
2026-06-10O'Shaughnessy TimothyD (D)Common shares, $2 par value750USD 360.91USD 270,682SEC filing ↗
2026-06-10Morcos Assaad AOption exercise / conversion (M)Common Shares, $2 par value per share1,000USD 132.40USD 132,400SEC filing ↗
2026-06-10Morcos Assaad AD (D)Common Shares, $2 par value per share1,000USD 360.91USD 360,910SEC filing ↗
2026-06-09Ruhlman Jon RyanGift (G)Common Shares, $2 par value per share18,000USD 0.00USD 0SEC filing ↗
2026-06-09RUHLMAN ROBERT GGift (G)Common shares, $2 par value18,000USD 0.00USD 0SEC filing ↗
2026-06-09CROSS MAEGAN ADAMS RUHLMANGift (G)Common Shares, $2 par value per share18,000USD 0.00USD 0SEC filing ↗
2026-06-08Hofstetter John MD (D)Common shares, $2 par value3,446USD 358.45USD 1,235,219SEC filing ↗
2026-03-13RUHLMAN ROBERT GD (D)Common shares, $2 par value2,500USD 259.73USD 649,325SEC filing ↗
2026-03-12CORLETT GLEN ED (D)Common shares, $2 par value400USD 260.24USD 104,096SEC filing ↗
2026-03-12Olenik John JD (D)Common shares, $2 par value752USD 260.84USD 196,152SEC filing ↗
2026-03-10Morcos Assaad AOption exercise / conversion (M)Common Shares, $2 par value per share1,750USD 132.40USD 231,700SEC filing ↗
2026-03-10Morcos Assaad AD (D)Common Shares, $2 par value per share1,750USD 260.34USD 455,595SEC filing ↗
2026-03-10Vaccariello Caroline SaylorD (D)Common shares, $2 par value1,547USD 260.34USD 402,746SEC filing ↗
2026-03-10Ruhlman Jon RyanD (D)Common shares, $2 par value2,000USD 260.34USD 520,680SEC filing ↗
2026-03-10O'Shaughnessy TimothyD (D)Common shares, $2 par value1,244USD 260.34USD 323,863SEC filing ↗
2026-03-10McKenna Dennis FD (D)Common shares, $2 par value7,887USD 260.34USD 2,053,302SEC filing ↗
2026-03-10Klaus Andrew SD (D)Common shares, $2 par value2,365USD 260.34USD 615,704SEC filing ↗
2026-03-10Hofstetter John MD (D)Common shares, $2 par value6,000USD 260.34USD 1,562,040SEC filing ↗
2026-03-10David C SunkleD (D)Common shares, $2 par value1,600USD 260.34USD 416,544SEC filing ↗
2026-02-04Vaccariello Caroline SaylorTax withholding (F)Common shares, $2 par value1,278USD 245.42USD 313,647SEC filing ↗
2026-02-04Vaccariello Caroline SaylorAward / grant (A)Common shares, $2 par value1,517USD 0.00USD 0SEC filing ↗
2026-02-04Ruhlman Jon RyanTax withholding (F)Common shares, $2 par value1,494USD 245.42USD 366,657SEC filing ↗
2026-02-04Ruhlman Jon RyanAward / grant (A)Common shares, $2 par value1,785USD 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 · —
TickerPLPC
CIK0000080035
SectorIndustrials
IndustryElectrical Equipment & Parts Yahoo Finance
SEC SIC1623 Water, Sewer, Pipeline, Comm & Power Line Construction
ExchangeNasdaq

Data coverage

Local Form 4 history423 transaction lines from 2020-01-02 to 2026-09-08
33 P purchase lines · 12 S sale lines · 378 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.