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

CORNING INC /NY

GLW · NYSE · CIK 0000024741 · Basic Materials · Electronic Components

INSIDER SIGNAL

No active buy signal

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

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

Last qualifying purchase2022-01-03 · BURNS STEPHANIE · $185

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
Becker StefanSVP, Finance & Corp Controller
○○▼○
Gullo Michelle LSenior Vice President & CHRO
▼○▼
WEEKS WENDELL PChairman, CEO and President
○▼
Amin JayminSVP and Chief Tech. Officer
○▼
Zhang John ZExec. Vice President & CCDO
▼▼
TILLMAN MICHAUNE DSVP and General Counsel
○▼
● Purchase▼ Sale○ Other

Showing the six most active owners; 7 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: 2022-01-03 · BURNS STEPHANIE.

Recent Form 4 activity

0Purchases
34Sales
155Other Form 4 lines
88SEC filings · 365 days
BUYING0 qualifying P line(s) · 180 days
SELLING14 sale line(s) · context only
OTHER12 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
16,842,925
Previous report
17,615,953
Avg daily volume
7,745,518
Days to cover
2.2

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
2022-01-03BURNS STEPHANIEPurchase (P)Common Stock5USD 36.95USD 185SEC filing ↗
2021-12-27BURNS STEPHANIEPurchase (P)Common Stock102USD 37.24USD 3,798SEC filing ↗
2021-06-14Ferguson Roger W. Jr.Purchase (P)Common Stock1,420USD 42.14USD 59,839SEC filing ↗
2021-06-03Ferguson Roger W. Jr.Purchase (P)Common Stock1,410USD 42.50USD 59,925SEC filing ↗
2021-05-19Ferguson Roger W. Jr.Purchase (P)Common Stock1,399USD 42.89USD 60,003SEC filing ↗
2021-05-12Ferguson Roger W. Jr.Purchase (P)Common Stock1,385USD 43.29USD 59,957SEC filing ↗
2021-05-05Ferguson Roger W. Jr.Purchase (P)Common Stock1,324USD 45.30USD 59,977SEC filing ↗

Form 4 evidence

189 transaction lines in the latest 365-day window; 1,506 in local history.

DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-09-04Gullo Michelle LSale (S)Common Stock9,874USD 152.29USD 1,503,711SEC filing ↗
2026-08-28STEVERSON LEWIS ASale (S)Common Stock13,100USD 151.29USD 1,981,899SEC filing ↗
2026-06-22Gullo Michelle LTax withholding (F)Common Stock18,378USD 209.83USD 3,856,256SEC filing ↗
Show recent Form 4 evidence (30 grouped rows)
DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-09-04Gullo Michelle LSale (S)Common Stock9,874USD 152.29USD 1,503,711SEC filing ↗
2026-08-28STEVERSON LEWIS ASale (S)Common Stock13,100USD 151.29USD 1,981,899SEC filing ↗
2026-06-22Gullo Michelle LTax withholding (F)Common Stock18,378USD 209.83USD 3,856,256SEC filing ↗
2026-06-09WEEKS WENDELL PSale (S)Common Stock100,000USD 186.46USD 18,646,000SEC filing ↗
2026-06-09WEEKS WENDELL POption exercise / conversion (M)Common Stock100,000USD 27.03USD 2,703,000SEC filing ↗
2026-05-22Amin JayminSale (S)Common Stock27,395USD 192.14USD 5,263,675SEC filing ↗
2026-05-22Amin JayminOption exercise / conversion (M)Common Stock7,917USD 27.00USD 213,759SEC filing ↗
2026-05-15Nelson Avery H IIISale (S)Common Stock20,000USD 195.93USD 3,918,600SEC filing ↗
2026-05-14Fang LiOption exercise / conversion (M)Common Stock8,725USD 19.65USD 171,446SEC filing ↗
2026-05-13Verkleeren Ronald LSale (S)Common Stock10,000USD 207.77USD 2,077,700SEC filing ↗
2026-05-13Becker StefanGift (G)Common Stock126USD 0.00USD 0SEC filing ↗
2026-05-11Zhang John ZSale (S)Common Stock10,000USD 198.34USD 1,983,400SEC filing ↗
2026-05-11TILLMAN MICHAUNE DSale (S)Common Stock3,260USD 207.02USD 674,885SEC filing ↗
2026-05-11Seetharam SoumyaSale (S)Common Stock20,000USD 206.23USD 4,124,600SEC filing ↗
2026-05-08STEVERSON LEWIS ASale (S)Common Stock27,750USD 196.06USD 5,440,665SEC filing ↗
2026-05-08Gullo Michelle LSale (S)Common Stock5,315USD 189.03USD 1,004,694SEC filing ↗
2026-05-08Becker StefanSale (S)Common Stock21,000USD 188.08USD 3,949,680SEC filing ↗
2026-05-07Schlesinger Edward ASale (S)Common Stock22,562USD 186.08USD 4,198,337SEC filing ↗
2026-05-06Zhang John ZSale (S)Common Stock15,000USD 184.67USD 2,770,050SEC filing ↗
2026-05-04TILLMAN MICHAUNE DTax withholding (F)Common Stock2,946USD 159.96USD 471,242SEC filing ↗
2026-04-29Becker StefanOption exercise / conversion (M)Common Stock2,795USD 0.00USD 0SEC filing ↗
2026-04-29Becker StefanTax withholding (F)Common Stock2,795USD 151.90USD 424,560SEC filing ↗
2026-04-28O'Day Michael PaulTax withholding (F)Common Stock3,496USD 153.05USD 535,063SEC filing ↗
2026-04-15Zhang John ZOption exercise / conversion (M)Common Stock61,571USD 0.00USD 0SEC filing ↗
2026-04-15Zhang John ZTax withholding (F)Common Stock31,433USD 168.27USD 5,289,231SEC filing ↗
2026-04-15WEEKS WENDELL POption exercise / conversion (M)Common Stock340,084USD 0.00USD 0SEC filing ↗
2026-04-15WEEKS WENDELL PTax withholding (F)Common Stock165,622USD 168.27USD 27,869,214SEC filing ↗
2026-04-15Verkleeren Ronald LOption exercise / conversion (M)Common Stock46,903USD 0.00USD 0SEC filing ↗
2026-04-15Verkleeren Ronald LTax withholding (F)Common Stock22,843USD 168.27USD 3,843,792SEC filing ↗
2026-04-15Seetharam SoumyaOption exercise / conversion (M)Common Stock44,780USD 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 · —
TickerGLW
CIK0000024741
SectorBasic Materials
IndustryElectronic Components Yahoo Finance
SEC SIC3357 Drawing & Insulating of Nonferrous Wire
ExchangeNYSE

Data coverage

Local Form 4 history1,506 transaction lines from 2020-01-02 to 2026-09-04
7 P purchase lines · 195 S sale lines · 1,304 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.