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

COHERENT CORP.

COHR · NYSE · CIK 0000820318 · Technology · Scientific & Technical Instruments

INSIDER SIGNAL

No active buy signal

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

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

Last qualifying purchase2024-12-02 · ANDERSON JAMES ROBERT · $51.4K

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.

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
Luther Sherri RCFO and Treasurer
▼▼▼▼○○○
Eng Julie SheridanChief Technology Officer
○○▼▼
Place Jeffrey B.Chief Supply Chain Officer
○○○
Digirolomo EnricoDirector
▼○▼
Beard Robert PChief Strategy & Legal Officer
○○▼
ANDERSON JAMES ROBERTCEO
○○○
● Purchase▼ Sale○ Other

Showing the six most active owners; 4 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: 2024-12-02 · ANDERSON JAMES ROBERT.

Recent Form 4 activity

0Purchases
41Sales
50Other Form 4 lines
56SEC filings · 365 days
BUYING0 qualifying P line(s) · 180 days
SELLING15 sale line(s) · context only
OTHER19 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
11,041,145
Previous report
10,178,444
Avg daily volume
6,604,484
Days to cover
1.7

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
2024-12-02ANDERSON JAMES ROBERTPurchase (P)Common Stock500USD 102.72USD 51,360SEC filing ↗
2024-11-22ANDERSON JAMES ROBERTPurchase (P)Common Stock500USD 103.98USD 51,990SEC filing ↗
2024-09-10ANDERSON JAMES ROBERTPurchase (P)Common Stock500USD 70.55USD 35,275SEC filing ↗
2024-09-03ANDERSON JAMES ROBERTPurchase (P)Common Stock500USD 73.37USD 36,685SEC filing ↗
2023-06-14MOTLEY DAVID LPurchase (P)Common Stock6,041USD 49.62USD 299,754SEC filing ↗
2022-09-13CORASANTI JOSEPH JPurchase (P)Common Stock10,000USD 43.84USD 438,400SEC filing ↗

Form 4 evidence

91 transaction lines in the latest 365-day window; 643 in local history.

DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-10-12Luther Sherri RTax withholding (F)Common Stock18,284USD 312.62USD 5,715,944SEC filing ↗
2026-10-01Place Jeffrey B.Tax withholding (F)Common Stock641USD 287.81USD 184,486SEC filing ↗
2026-09-11Digirolomo EnricoSale (S)Common Stock5,315USD 305.99USD 1,626,337SEC filing ↗
Show recent Form 4 evidence (30 grouped rows)
DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-10-12Luther Sherri RTax withholding (F)Common Stock18,284USD 312.62USD 5,715,944SEC filing ↗
2026-10-01Place Jeffrey B.Tax withholding (F)Common Stock641USD 287.81USD 184,486SEC filing ↗
2026-09-11Digirolomo EnricoSale (S)Common Stock5,315USD 305.99USD 1,626,337SEC filing ↗
2026-09-11Digirolomo EnricoGift (G)Common Stock1,279USD 0.00USD 0SEC filing ↗
2026-09-09Beard Robert PSale (S)Common Stock500USD 309.32USD 154,660SEC filing ↗
2026-09-02Neal-Graves LisaSale (S)Common Stock2,200USD 268.42USD 590,524SEC filing ↗
2026-09-01Eng Julie SheridanSale (S)Common Stock6,030USD 270.69USD 1,632,261SEC filing ↗
2026-08-31SKAGGS STEPHEN ASale (S)Common Stock2,272USD 276.88USD 629,071SEC filing ↗
2026-08-31Digirolomo EnricoSale (S)Common Stock2,272USD 276.85USD 629,003SEC filing ↗
2026-08-31Eng Julie SheridanSale (S)Common Stock7,047USD 276.83USD 1,950,821SEC filing ↗
2026-08-28Place Jeffrey B.Award / grant (A)Common Stock3,358USD 0.00USD 0SEC filing ↗
2026-08-28Mocciaro IlariaTax withholding (F)Common Stock2,174USD 295.39USD 642,178SEC filing ↗
2026-08-28Mocciaro IlariaAward / grant (A)Common Stock4,061USD 0.00USD 0SEC filing ↗
2026-08-28Luther Sherri RTax withholding (F)Common Stock2,594USD 295.39USD 766,242SEC filing ↗
2026-08-28Luther Sherri RAward / grant (A)Common Stock8,731USD 0.00USD 0SEC filing ↗
2026-08-28Eng Julie SheridanTax withholding (F)Common Stock12,862USD 295.39USD 3,799,306SEC filing ↗
2026-08-28Eng Julie SheridanAward / grant (A)Common Stock17,333USD 0.00USD 0SEC filing ↗
2026-08-28Beard Robert PTax withholding (F)Common Stock1,896USD 295.39USD 560,059SEC filing ↗
2026-08-28Beard Robert PAward / grant (A)Common Stock5,373USD 0.00USD 0SEC filing ↗
2026-08-28ANDERSON JAMES ROBERTTax withholding (F)Common Stock11,958USD 295.39USD 3,532,274SEC filing ↗
2026-08-28ANDERSON JAMES ROBERTAward / grant (A)Common Stock30,564USD 0.00USD 0SEC filing ↗
2026-08-18Luther Sherri RSale (S)Common Stock3,000USD 324.00USD 972,000SEC filing ↗
2026-07-22Luther Sherri RSale (S)Common Stock1,000USD 306.68USD 306,680SEC filing ↗
2026-07-01Place Jeffrey B.Tax withholding (F)Common Stock2,181USD 394.47USD 860,339SEC filing ↗
2026-06-03ANDERSON JAMES ROBERTTax withholding (F)Common Stock25,836USD 426.89USD 11,029,130SEC filing ↗
2026-05-12Luther Sherri RSale (S)Common Stock2,000USD 372.96USD 745,920SEC filing ↗
2026-05-11Xia Howard H.Sale (S)Common Stock2,000USD 354.50USD 709,000SEC filing ↗
2026-05-11Xia Howard H.Option exercise / conversion (M)Common Stock2,000USD 21.67USD 43,340SEC filing ↗
2026-04-22Luther Sherri RSale (S)Common Stock2,000USD 351.00USD 702,000SEC filing ↗
2026-03-17Xia Howard H.Sale (S)Common Stock3,240USD 241.65USD 782,943SEC 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 · —
TickerCOHR
CIK0000820318
SectorTechnology
IndustryScientific & Technical Instruments Yahoo Finance
SEC SIC3827 Optical Instruments & Lenses
ExchangeNYSE

Data coverage

Local Form 4 history643 transaction lines from 2020-01-02 to 2026-10-12
6 P purchase lines · 263 S sale lines · 374 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.