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

INTERNATIONAL BUSINESS MACHINES CORP

IBM · NYSE · CIK 0000051143 · Technology · Information Technology Services

INSIDER SIGNAL

No active buy signal

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

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

Last qualifying purchase2026-02-25 · HOWARD MICHELLE J · $11.9K

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
Robinson AnneSenior Vice President
○○
Fehring Nicolas A.VP, Controller
○
Thomas Robert DavidSenior Vice President
▼
● Purchase▼ Sale○ Other

—

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: 2026-02-25 · HOWARD MICHELLE J.

Recent Form 4 activity

3Purchases
1Sales
73Other Form 4 lines
30SEC filings · 365 days
BUYING0 qualifying P line(s) · 180 days
SELLING1 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
24,164,783
Previous report
22,444,940
Avg daily volume
5,906,808
Days to cover
4.1

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
2026-02-25Miebach MichaelPurchase (P)Common Stock434USD 233.33USD 101,265SEC filing ↗
2026-02-25HOWARD MICHELLE JPurchase (P)Common Stock50USD 237.83USD 11,892SEC filing ↗
2026-01-30FARR DAVID NPurchase (P)Common Stock1,000USD 304.00USD 304,000SEC filing ↗
2025-02-28FARR DAVID NPurchase (P)Common Stock1,200USD 249.00USD 298,800SEC filing ↗
2024-11-13ZOLLAR ALFRED WPurchase (P)Common Stock936USD 210.62USD 197,140SEC filing ↗
2022-09-15FARR DAVID NPurchase (P)Common Stock1,000USD 125.00USD 125,000SEC filing ↗
2021-12-13HOWARD MICHELLE JPurchase (P)Common Stock80USD 123.76USD 9,901SEC filing ↗
2021-02-08HOWARD MICHELLE JPurchase (P)Common Stock64USD 123.30USD 7,891SEC filing ↗
2020-11-09Gorsky AlexPurchase (P)Common Stock4,232USD 117.86USD 498,784SEC filing ↗
2020-11-02LIVERIS ANDREW NPurchase (P)Common Stock2,655USD 112.92USD 299,803SEC filing ↗
2020-10-30Swedish JosephPurchase (P)Common Stock2,000USD 111.01USD 222,020SEC filing ↗
2020-10-29FARR DAVID NPurchase (P)Common Stock1,400USD 107.74USD 150,842SEC filing ↗
2020-10-28WADDELL FREDERICK HPurchase (P)Common Stock1,000USD 107.50USD 107,500SEC filing ↗
2020-10-28MCNABB FREDERICK WILLIAM IIIPurchase (P)Common Stock9,250USD 108.01USD 999,092SEC filing ↗
2020-10-27TAUREL SIDNEYPurchase (P)Common Stock5,000USD 110.75USD 553,750SEC filing ↗

Form 4 evidence

77 transaction lines in the latest 365-day window; 605 in local history.

DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-08-26Thomas Robert DavidSale (S)Common Stock25,000USD 230.32USD 5,758,000SEC filing ↗
2026-07-01Robinson AnneOption exercise / conversion (M)Common Stock7,295USD 0.00USD 0SEC filing ↗
2026-07-01Robinson AnneTax withholding (F)Common Stock4,035USD 286.73USD 1,156,956SEC filing ↗
Show recent Form 4 evidence (30 grouped rows)
DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-08-26Thomas Robert DavidSale (S)Common Stock25,000USD 230.32USD 5,758,000SEC filing ↗
2026-07-01Robinson AnneOption exercise / conversion (M)Common Stock7,295USD 0.00USD 0SEC filing ↗
2026-07-01Robinson AnneTax withholding (F)Common Stock4,035USD 286.73USD 1,156,956SEC filing ↗
2026-06-04Fehring Nicolas A.Gift (G)Common Stock400USD 0.00USD 0SEC filing ↗
2026-02-25Miebach MichaelPurchase (P)Common Stock434USD 233.33USD 101,265SEC filing ↗
2026-02-25HOWARD MICHELLE JPurchase (P)Common Stock50USD 237.83USD 11,892SEC filing ↗
2026-02-21Thomas Robert DavidOption exercise / conversion (M)Common Stock8,414USD 0.00USD 0SEC filing ↗
2026-02-21Thomas Robert DavidTax withholding (F)Common Stock4,253USD 256.42USD 1,090,554SEC filing ↗
2026-02-21LAMOREAUX NICKLE JACLYNOption exercise / conversion (M)Common Stock4,391USD 0.00USD 0SEC filing ↗
2026-02-21LAMOREAUX NICKLE JACLYNTax withholding (F)Common Stock2,243USD 256.42USD 575,150SEC filing ↗
2026-02-21KRISHNA ARVINDOption exercise / conversion (M)Common Stock16,903USD 0.00USD 0SEC filing ↗
2026-02-21KRISHNA ARVINDTax withholding (F)Common Stock8,470USD 256.42USD 2,171,877SEC filing ↗
2026-02-21KAVANAUGH JAMES JOption exercise / conversion (M)Common Stock9,832USD 0.00USD 0SEC filing ↗
2026-02-21KAVANAUGH JAMES JTax withholding (F)Common Stock4,928USD 256.42USD 1,263,638SEC filing ↗
2026-02-21Fehring Nicolas A.Option exercise / conversion (M)Common Stock1,568USD 0.00USD 0SEC filing ↗
2026-02-21Fehring Nicolas A.Tax withholding (F)Common Stock795USD 256.42USD 203,854SEC filing ↗
2026-02-21COHN GARY DOption exercise / conversion (M)Common Stock7,582USD 0.00USD 0SEC filing ↗
2026-02-21COHN GARY DTax withholding (F)Common Stock4,194USD 256.42USD 1,075,425SEC filing ↗
2026-02-18Thomas Robert DavidOption exercise / conversion (M)Common Stock2,549USD 0.00USD 0SEC filing ↗
2026-02-18Thomas Robert DavidTax withholding (F)Common Stock1,290USD 258.68USD 333,697SEC filing ↗
2026-02-18Robinson AnneOption exercise / conversion (M)Common Stock1,722USD 0.00USD 0SEC filing ↗
2026-02-18Robinson AnneTax withholding (F)Common Stock953USD 258.68USD 246,522SEC filing ↗
2026-02-18LAMOREAUX NICKLE JACLYNOption exercise / conversion (M)Common Stock1,586USD 0.00USD 0SEC filing ↗
2026-02-18LAMOREAUX NICKLE JACLYNTax withholding (F)Common Stock810USD 258.68USD 209,531SEC filing ↗
2026-02-18KRISHNA ARVINDOption exercise / conversion (M)Common Stock5,664USD 0.00USD 0SEC filing ↗
2026-02-18KRISHNA ARVINDTax withholding (F)Common Stock2,839USD 258.68USD 734,393SEC filing ↗
2026-02-18KAVANAUGH JAMES JOption exercise / conversion (M)Common Stock2,719USD 0.00USD 0SEC filing ↗
2026-02-18KAVANAUGH JAMES JTax withholding (F)Common Stock1,363USD 258.68USD 352,581SEC filing ↗
2026-02-18Fehring Nicolas A.Option exercise / conversion (M)Common Stock696USD 0.00USD 0SEC filing ↗
2026-02-18Fehring Nicolas A.Tax withholding (F)Common Stock353USD 258.68USD 91,314SEC 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 · —
TickerIBM
CIK0000051143
SectorTechnology
IndustryInformation Technology Services Yahoo Finance
SEC SIC3570 Computer & office Equipment
ExchangeNYSE

Data coverage

Local Form 4 history605 transaction lines from 2020-02-01 to 2026-08-26
19 P purchase lines · 42 S sale lines · 544 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.