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

KAISER ALUMINUM CORP

KALU · Nasdaq · CIK 0000811596 · Basic Materials · Aluminum

INSIDER SIGNAL

No active buy signal

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

20 Form 4 transaction lines observed in the same window
7 sales · 13 option, withholding, award, gift or other lines

Last qualifying purchase2024-07-29 · Harvey Keith · $199.9K

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
Wilcox BrettDirector
▼○
Grimley Richard P.Director
▼○
Harvey KeithPresident & CEO
▼▼
DONNAN JOHN MALCOLMEVP, CAO and GC
▼○
arnold michael cDirector
○
Glas Kimberly ThompsonDirector
○
● Purchase▼ Sale○ Other

Showing the six most active owners; 6 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: 2024-07-29 · Harvey Keith.

Recent Form 4 activity

0Purchases
10Sales
36Other Form 4 lines
29SEC filings · 365 days
BUYING0 qualifying P line(s) · 180 days
SELLING7 sale line(s) · context only
OTHER13 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
958,467
Previous report
946,598
Avg daily volume
245,020
Days to cover
3.9

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
2024-07-29Harvey KeithPurchase (P)Common Stock, par value $0.01 per share2,588USD 77.23USD 199,871SEC filing ↗

Form 4 evidence

46 transaction lines in the latest 365-day window; 428 in local history.

DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-06-04arnold michael cAward / grant (A)Common Stock, par value $0.01 per share786USD 0.00USD 0SEC filing ↗
2026-06-04Wilcox BrettAward / grant (A)Common Stock, par value $0.01 per share1,114USD 52.44USD 58,417SEC filing ↗
2026-06-04STEBBINS DONALD JAward / grant (A)Common Stock, par value $0.01 per share1,417USD 79.31USD 112,381SEC filing ↗
Show recent Form 4 evidence (30 grouped rows)
DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-06-04arnold michael cAward / grant (A)Common Stock, par value $0.01 per share786USD 0.00USD 0SEC filing ↗
2026-06-04Wilcox BrettAward / grant (A)Common Stock, par value $0.01 per share1,114USD 52.44USD 58,417SEC filing ↗
2026-06-04STEBBINS DONALD JAward / grant (A)Common Stock, par value $0.01 per share1,417USD 79.31USD 112,381SEC filing ↗
2026-06-04MINOR GLENDA JAward / grant (A)Common Stock, par value $0.01 per share1,121USD 53.22USD 59,664SEC filing ↗
2026-06-04HOFFMAN JAMES DONALDAward / grant (A)Common Stock, par value $0.01 per share1,375USD 76.29USD 104,901SEC filing ↗
2026-06-04Grimley Richard P.Award / grant (A)Common Stock, par value $0.01 per share786USD 0.00USD 0SEC filing ↗
2026-06-04Glas Kimberly ThompsonAward / grant (A)Common Stock, par value $0.01 per share786USD 0.00USD 0SEC filing ↗
2026-06-04Foster David AAward / grant (A)Common Stock, par value $0.01 per share786USD 0.00USD 0SEC filing ↗
2026-04-29Harvey KeithSale (S)Common Stock, par value $0.01 per share3,031USD 173.13USD 524,757SEC filing ↗
2026-04-29Grimley Richard P.Sale (S)Common Stock, par value $0.01 per share1,524USD 171.52USD 261,396SEC filing ↗
2026-04-28West Neal ESale (S)Common Stock, par value $0.01 per share5,000USD 173.29USD 866,450SEC filing ↗
2026-04-28DONNAN JOHN MALCOLMGift (G)Common Stock, par value $0.01 per share1,500USD 0.00USD 0SEC filing ↗
2026-04-27Wilcox BrettSale (S)Common Stock, par value $0.01 per share15,000USD 174.44USD 2,616,600SEC filing ↗
2026-04-27Harvey KeithSale (S)Common Stock, par value $0.01 per share47,001USD 175.09USD 8,229,405SEC filing ↗
2026-04-27Gheorghe IulianSale (S)Common Stock, par value $0.01 per share175USD 174.22USD 30,488SEC filing ↗
2026-04-27DONNAN JOHN MALCOLMSale (S)Common Stock, par value $0.01 per share2,743USD 178.20USD 488,803SEC filing ↗
2026-03-05West Neal ETax withholding (F)Common Stock, par value $0.01 per share5,455USD 125.84USD 686,457SEC filing ↗
2026-03-05West Neal EAward / grant (A)Common Stock, par value $0.01 per share16,201USD 0.00USD 0SEC filing ↗
2026-03-05Robb Thomas H.Award / grant (A)Common Stock, par value $0.01 per share2,954USD 0.00USD 0SEC filing ↗
2026-03-05Narayan VijaiTax withholding (F)Common Stock, par value $0.01 per share579USD 125.84USD 72,861SEC filing ↗
2026-03-05Narayan VijaiAward / grant (A)Common Stock, par value $0.01 per share733USD 0.00USD 0SEC filing ↗
2026-03-05Harvey KeithTax withholding (F)Common Stock, par value $0.01 per share24,581USD 125.84USD 3,093,273SEC filing ↗
2026-03-05Harvey KeithAward / grant (A)Common Stock, par value $0.01 per share65,690USD 0.00USD 0SEC filing ↗
2026-03-05Gheorghe IulianTax withholding (F)Common Stock, par value $0.01 per share216USD 125.84USD 27,181SEC filing ↗
2026-03-05Gheorghe IulianAward / grant (A)Common Stock, par value $0.01 per share852USD 0.00USD 0SEC filing ↗
2026-03-05DONNAN JOHN MALCOLMTax withholding (F)Common Stock, par value $0.01 per share5,110USD 125.84USD 643,042SEC filing ↗
2026-03-05DONNAN JOHN MALCOLMAward / grant (A)Common Stock, par value $0.01 per share15,348USD 0.00USD 0SEC filing ↗
2026-03-05Barger Hugh J. IIIAward / grant (A)Common Stock, par value $0.01 per share1,686USD 0.00USD 0SEC filing ↗
2026-02-23West Neal ESale (S)Common Stock, par value $0.01 per share5,000USD 121.72USD 608,600SEC filing ↗
2026-02-23Robb Thomas H.Award / grant (A)Common Stock, par value $0.01 per share440USD 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 · —
TickerKALU
CIK0000811596
SectorBasic Materials
IndustryAluminum Yahoo Finance
SEC SIC3350 Rolling Drawing & Extruding of Nonferrous Metals
ExchangeNasdaq

Data coverage

Local Form 4 history428 transaction lines from 2020-01-22 to 2026-06-04
2 P purchase lines · 81 S sale lines · 345 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.