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

NORFOLK SOUTHERN CORP

NSC · NYSE · CIK 0000702165 · Industrials · Railroads

INSIDER SIGNAL

No active buy signal

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

5 Form 4 transaction lines observed in the same window
0 sales · 5 option, withholding, award, gift or other lines

Last qualifying purchase2025-12-05 · Clyburn William Jr. · $60.1K

WHY NO ACTIVE SIGNAL?

Purchase activityNone
Recent buyingNone
Recent salesNone
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
Orr John FEVP & Chief Operating Officer
○○
George Mark RPresident & CEO
○○
Huffard John C JrDirector
○
● Purchase▼ Sale○ Other

—

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: 2025-12-05 · Clyburn William Jr..

Recent Form 4 activity

3Purchases
1Sales
56Other Form 4 lines
20SEC filings · 365 days
BUYING0 qualifying P line(s) · 180 days
SELLING0 sale line(s) · context only
OTHER5 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
7,152,583
Previous report
7,619,508
Avg daily volume
938,025
Days to cover
7.6

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
2025-12-05Clyburn William Jr.Purchase (P)Common Stock204USD 294.79USD 60,137SEC filing ↗
2025-11-05Fahmy SamehPurchase (P)Common Stock1,650USD 282.97USD 466,901SEC filing ↗
2025-10-27ANDERSON RICHARD HPurchase (P)Common Stock2,600USD 281.86USD 732,836SEC filing ↗
2025-01-31LAMPHERE GILBERT HPurchase (P)Common Stock607USD 259.86USD 157,735SEC filing ↗
2024-12-13Clyburn William Jr.Purchase (P)Common Stock201USD 248.41USD 49,930SEC filing ↗
2024-12-13ANDERSON RICHARD HPurchase (P)Common Stock400USD 248.65USD 99,460SEC filing ↗
2024-12-12Fahmy SamehPurchase (P)Common Stock350USD 249.37USD 87,280SEC filing ↗
2024-12-11George Mark RPurchase (P)Common Stock200USD 249.84USD 49,968SEC filing ↗
2024-10-24Fahmy SamehPurchase (P)Common Stock1,000USD 255.00USD 255,000SEC filing ↗
2024-10-24ANDERSON RICHARD HPurchase (P)Common Stock1,000USD 257.85USD 257,850SEC filing ↗
2024-08-02Fahmy SamehPurchase (P)Common Stock300USD 241.65USD 72,495SEC filing ↗
2024-08-01Fahmy SamehPurchase (P)Common Stock700USD 245.15USD 171,605SEC filing ↗
2024-07-29ANDERSON RICHARD HPurchase (P)Common Stock2,000USD 247.48USD 494,960SEC filing ↗
2024-06-14Fahmy SamehPurchase (P)Common Stock2,000USD 219.25USD 438,500SEC filing ↗
2024-06-03Fahmy SamehPurchase (P)Common Stock1,500USD 222.17USD 333,255SEC filing ↗

Form 4 evidence

60 transaction lines in the latest 365-day window; 646 in local history.

DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-10-08Huffard John C JrW (W)Common Stock333USD 0.00USD 0SEC filing ↗
2026-09-13George Mark ROption exercise / conversion (M)Common Stock2,653USD 0.00USD 0SEC filing ↗
2026-09-13George Mark RTax withholding (F)Common Stock1,035USD 323.30USD 334,616SEC filing ↗
Show recent Form 4 evidence (30 grouped rows)
DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-10-08Huffard John C JrW (W)Common Stock333USD 0.00USD 0SEC filing ↗
2026-09-13George Mark ROption exercise / conversion (M)Common Stock2,653USD 0.00USD 0SEC filing ↗
2026-09-13George Mark RTax withholding (F)Common Stock1,035USD 323.30USD 334,616SEC filing ↗
2026-04-26Orr John FOption exercise / conversion (M)Common Stock8,319USD 0.00USD 0SEC filing ↗
2026-04-26Orr John FTax withholding (F)Common Stock3,247USD 320.81USD 1,041,670SEC filing ↗
2026-01-30Zampi Jason AndrewOption exercise / conversion (M)Common Stock1,075USD 0.00USD 0SEC filing ↗
2026-01-30Zampi Jason AndrewTax withholding (F)Common Stock294USD 289.24USD 85,037SEC filing ↗
2026-01-30Orr John FOption exercise / conversion (M)Common Stock1,505USD 0.00USD 0SEC filing ↗
2026-01-30Orr John FTax withholding (F)Common Stock410USD 289.24USD 118,588SEC filing ↗
2026-01-30Moore Claiborne LOption exercise / conversion (M)Common Stock673USD 0.00USD 0SEC filing ↗
2026-01-30Moore Claiborne LTax withholding (F)Common Stock184USD 289.24USD 53,220SEC filing ↗
2026-01-30LAMPHERE GILBERT HOption exercise / conversion (M)Common Stock700USD 0.00USD 0SEC filing ↗
2026-01-30George Mark ROption exercise / conversion (M)Common Stock3,691USD 0.00USD 0SEC filing ↗
2026-01-30George Mark RTax withholding (F)Common Stock1,444USD 289.24USD 417,663SEC filing ↗
2026-01-30Elkins Claude EOption exercise / conversion (M)Common Stock1,304USD 0.00USD 0SEC filing ↗
2026-01-30Elkins Claude ETax withholding (F)Common Stock356USD 289.24USD 102,969SEC filing ↗
2026-01-30Bhatt AnilOption exercise / conversion (M)Common Stock861USD 0.00USD 0SEC filing ↗
2026-01-30Bhatt AnilTax withholding (F)Common Stock235USD 289.24USD 67,971SEC filing ↗
2026-01-27Zampi Jason AndrewOption exercise / conversion (M)Common Stock220USD 0.00USD 0SEC filing ↗
2026-01-27Zampi Jason AndrewTax withholding (F)Common Stock60USD 289.91USD 17,395SEC filing ↗
2026-01-27Moore Claiborne LOption exercise / conversion (M)Common Stock254USD 0.00USD 0SEC filing ↗
2026-01-27Moore Claiborne LTax withholding (F)Common Stock70USD 289.91USD 20,294SEC filing ↗
2026-01-27George Mark ROption exercise / conversion (M)Common Stock775USD 0.00USD 0SEC filing ↗
2026-01-27George Mark RTax withholding (F)Common Stock303USD 289.91USD 87,843SEC filing ↗
2026-01-27Elkins Claude EOption exercise / conversion (M)Common Stock515USD 0.00USD 0SEC filing ↗
2026-01-27Elkins Claude ETax withholding (F)Common Stock141USD 289.91USD 40,877SEC filing ↗
2026-01-26Zampi Jason AndrewOption exercise / conversion (M)Common Stock247USD 0.00USD 0SEC filing ↗
2026-01-26Zampi Jason AndrewTax withholding (F)Common Stock68USD 288.31USD 19,605SEC filing ↗
2026-01-26Moore Claiborne LOption exercise / conversion (M)Common Stock247USD 0.00USD 0SEC filing ↗
2026-01-26Moore Claiborne LTax withholding (F)Common Stock68USD 288.31USD 19,605SEC 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 · —
TickerNSC
CIK0000702165
SectorIndustrials
IndustryRailroads Yahoo Finance
SEC SIC4011 Railroads, Line-Haul Operating
ExchangeNYSE

Data coverage

Local Form 4 history646 transaction lines from 2020-01-27 to 2026-10-08
34 P purchase lines · 55 S sale lines · 557 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.