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

Caris Life Sciences, Inc.

CAI · Nasdaq · CIK 0002019410 · Healthcare · Biotechnology

INSIDER SIGNAL

No active buy signal

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

25 Form 4 transaction lines observed in the same window
5 sales · 18 option, withholding, award, gift or other lines

Last qualifying purchase2026-05-15 · HALBERT JON · $990.1K

WHY NO ACTIVE SIGNAL?

Purchase activityPresent
Recent buying2 qualifying line group(s)
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
Spetzler David BaxleyPresident
○○▼○▼
Brille Brian JSee Remarks
○○▼
Denton John RusselSee Remarks
○▼
Vacirca Jeff LDirector
●○
HALBERT JONDirector
●○
PHILLIPS T DANNYDirector
○
● Purchase▼ Sale○ Other

Showing the six most active owners; 9 additional owner(s) remain in Form 4 evidence.

Purchase breadth & concentration

QUALIFYING BUYERS2
PURCHASE CONCENTRATION66%Largest buyer: HALBERT JON · $990.1K
CLUSTER BUYING · 15D2 insidersPeak activity: 2026-05-11–2026-05-15

Roles in the peak window: Director. Concentration uses priced qualifying P lines only and does not change the saved score.

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: 2026-05-15 · HALBERT JON.

Recent Form 4 activity

4Purchases
7Sales
34Other Form 4 lines
36SEC filings · 365 days
BUYING2 qualifying P line(s) · 180 days
SELLING5 sale line(s) · context only
OTHER18 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
13,891,975
Previous report
13,331,431
Avg daily volume
5,592,020
Days to cover
2.5

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
2026-05-15HALBERT JONPurchase (P)Common Stock68,000USD 14.56USD 990,080SEC filing ↗
2026-05-11Vacirca Jeff LPurchase (P)Common Stock31,050USD 16.15USD 501,457SEC filing ↗
2025-11-07Spetzler David BaxleyPurchase (P)Common Stock400USD 23.85USD 9,540SEC filing ↗
2025-11-07Denton John RusselPurchase (P)Common Stock4,184USD 24.09USD 100,793SEC filing ↗
2025-06-20Denton John RusselPurchase (P)Common Stock7,500USD 21.00USD 157,500SEC filing ↗
2025-06-20Brille Brian JPurchase (P)Common Stock30,000USD 21.00USD 630,000SEC filing ↗

Form 4 evidence

45 transaction lines in the latest 365-day window; 80 in local history.

DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-09-22Denton John RusselSale (S)Common Stock7,500USD 31.82USD 238,650SEC filing ↗
2026-09-17Brille Brian JSale (S)Common Stock400,000USD 30.33USD 12,132,000SEC filing ↗
2026-09-17Brille Brian JOption exercise / conversion (M)Common Stock400,000USD 2.44USD 976,000SEC filing ↗
Show recent Form 4 evidence (30 grouped rows)
DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-09-22Denton John RusselSale (S)Common Stock7,500USD 31.82USD 238,650SEC filing ↗
2026-09-17Brille Brian JSale (S)Common Stock400,000USD 30.33USD 12,132,000SEC filing ↗
2026-09-17Brille Brian JOption exercise / conversion (M)Common Stock400,000USD 2.44USD 976,000SEC filing ↗
2026-09-04Spetzler David BaxleySale (S)Common Stock119,212USD 24.76USD 2,951,689SEC filing ↗
2026-09-04Spetzler David BaxleyOption exercise / conversion (M)Common Stock250,000USD 2.44USD 610,000SEC filing ↗
2026-09-03Spetzler David BaxleySale (S)Common Stock478,000USD 24.86USD 11,882,824SEC filing ↗
2026-09-03Spetzler David BaxleyOption exercise / conversion (M)Common Stock1,000,000USD 2.44USD 2,440,000SEC filing ↗
2026-08-14Vacirca Jeff LAward / grant (A)Common Stock13,192USD 0.00USD 0SEC filing ↗
2026-08-14PHILLIPS T DANNYAward / grant (A)Common Stock13,192USD 0.00USD 0SEC filing ↗
2026-08-14Minor LloydAward / grant (A)Common Stock13,192USD 0.00USD 0SEC filing ↗
2026-08-14JOHANSEN LAURA IAward / grant (A)Common Stock13,192USD 0.00USD 0SEC filing ↗
2026-08-14HALBERT JONAward / grant (A)Common Stock13,192USD 0.00USD 0SEC filing ↗
2026-08-14Gilliam Joseph EAward / grant (A)Common Stock13,192USD 0.00USD 0SEC filing ↗
2026-08-14Fredrickson David PaulAward / grant (A)Common Stock13,192USD 0.00USD 0SEC filing ↗
2026-08-14CASTLEMAN PETER MAward / grant (A)Common Stock13,192USD 0.00USD 0SEC filing ↗
2026-05-29POSTE GEORGEAward / grant (A)Common Stock1,600USD 15.62USD 24,992SEC filing ↗
2026-05-29Knowles Jonathan Kenneth CharlesAward / grant (A)Common Stock1,600USD 15.62USD 24,992SEC filing ↗
2026-05-15HALBERT JONPurchase (P)Common Stock68,000USD 14.56USD 990,080SEC filing ↗
2026-05-15Spetzler David BaxleyTax withholding (F)Common Stock13,856USD 15.25USD 211,304SEC filing ↗
2026-05-15Power Luke ThomasTax withholding (F)Common Stock9,771USD 15.25USD 149,008SEC filing ↗
2026-05-15HALBERT DAVID DTax withholding (F)Common Stock40,712USD 15.25USD 620,858SEC filing ↗
2026-05-15Denton John RusselTax withholding (F)Common Stock6,047USD 15.25USD 92,217SEC filing ↗
2026-05-15Brille Brian JTax withholding (F)Common Stock13,987USD 15.25USD 213,302SEC filing ↗
2026-05-11Vacirca Jeff LPurchase (P)Common Stock31,050USD 16.15USD 501,457SEC filing ↗
2026-03-06Spetzler David BaxleyAward / grant (A)Common Stock83,162USD 0.00USD 0SEC filing ↗
2026-03-06Power Luke ThomasAward / grant (A)Common Stock63,971USD 0.00USD 0SEC filing ↗
2026-03-06HALBERT DAVID DAward / grant (A)Common Stock320,112USD 0.00USD 0SEC filing ↗
2026-03-06Denton John RusselAward / grant (A)Common Stock63,971USD 0.00USD 0SEC filing ↗
2026-03-06Brille Brian JAward / grant (A)Common Stock83,162USD 0.00USD 0SEC filing ↗
2026-02-26Minor LloydAward / grant (A)Common Stock2,492USD 20.06USD 49,990SEC 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 · —
TickerCAI
CIK0002019410
SectorHealthcare
IndustryBiotechnology Yahoo Finance
SEC SIC8071 Services-Medical Laboratories
ExchangeNasdaq

Data coverage

Local Form 4 history80 transaction lines from 2025-02-27 to 2026-09-22
6 P purchase lines · 7 S sale lines · 67 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.