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

Personalis, Inc.

PSNL · Nasdaq · CIK 0001527753 · Healthcare · Diagnostics & Research

INSIDER SIGNAL

No active buy signal

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

30 Form 4 transaction lines observed in the same window
13 sales · 17 option, withholding, award, gift or other lines

Last qualifying purchase2025-12-22 · Tempus AI, Inc. · $250.0K

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.

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
Tachibana AaronCFO AND COO
○▼○▼○▼○▼▼
Hall Christopher MChief Executive Officer
○▼○▼○▼○▼▼
Chen RichardPresident and CMO
○▼▼
EASTHAM KARINDirector
○○
BOWMAN A BLAINEDirector
○
WIDDER KENNETH JDirector
○
● Purchase▼ Sale○ Other

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

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: 2025-12-22 · Tempus AI, Inc..

Recent Form 4 activity

12Purchases
16Sales
23Other Form 4 lines
27SEC filings · 365 days
BUYING0 qualifying P line(s) · 180 days
SELLING13 sale line(s) · context only
OTHER17 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
8,427,731
Previous report
8,266,193
Avg daily volume
1,947,012
Days to cover
4.3

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
2025-12-22Tempus AI, Inc.Purchase (P)Common Stock28,000USD 8.93USD 250,040SEC filing ↗
2025-12-19Tempus AI, Inc.Purchase (P)Common Stock29,641USD 8.39USD 248,688SEC filing ↗
2025-12-18Tempus AI, Inc.Purchase (P)Common Stock31,430USD 7.91USD 248,611SEC filing ↗
2025-12-17Tempus AI, Inc.Purchase (P)Common Stock31,650USD 7.86USD 248,769SEC filing ↗
2025-11-25Tempus AI, Inc.Purchase (P)Common Stock23,600USD 10.62USD 250,665SEC filing ↗
2025-11-24Tempus AI, Inc.Purchase (P)Common Stock25,225USD 9.87USD 248,971SEC filing ↗
2025-11-21Tempus AI, Inc.Purchase (P)Common Stock26,499USD 9.40USD 249,190SEC filing ↗
2025-11-20Tempus AI, Inc.Purchase (P)Common Stock28,827USD 8.63USD 248,777SEC filing ↗
2025-11-19Tempus AI, Inc.Purchase (P)Common Stock30,645USD 8.12USD 248,837SEC filing ↗
2025-11-18Tempus AI, Inc.Purchase (P)Common Stock64,750USD 7.67USD 496,632SEC filing ↗
2024-08-16Tempus AI, Inc.Purchase (P)Common Stock3,500,000USD 5.07USD 17,745,000SEC filing ↗
2024-03-01MYERS WOODROW A JRPurchase (P)Common Stock10,000USD 1.67USD 16,700SEC filing ↗
2022-03-03Eggers Barry; Janmohamed Arif; Lightspeed General Partner Select IV, L.P.; Lightspeed Ultimate General Partner Select IV, L.L.C.; Lightspeed Venture Partners Select IV, L.P.; Mhatre Ravi; Nieh PeterPurchase (P)Common Stock265,761USD 9.84USD 2,615,043SEC filing ↗
2022-03-02Eggers Barry; Janmohamed Arif; Lightspeed General Partner Select IV, L.P.; Lightspeed Ultimate General Partner Select IV, L.L.C.; Lightspeed Venture Partners Select IV, L.P.; Mhatre Ravi; Nieh PeterPurchase (P)Common Stock48,989USD 9.96USD 487,930SEC filing ↗
2020-08-14Janmohamed Arif; Liew Jeremy; Lightspeed General Partner Select IV, L.P.; Lightspeed Ultimate General Partner Select IV, L.L.C.; Lightspeed Venture Partners Select IV, L.P.; Mhatre RaviPurchase (P)Common Stock1,315,789USD 19.00USD 24,999,991SEC filing ↗

Form 4 evidence

51 transaction lines in the latest 365-day window; 278 in local history.

DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-09-18Tachibana AaronSale (S)Common Stock2,931USD 16.22USD 47,541SEC filing ↗
2026-09-18Moore Stephen MichaelSale (S)Common Stock2,068USD 16.22USD 33,543SEC filing ↗
2026-09-18Hall Christopher MSale (S)Common Stock7,459USD 16.22USD 120,985SEC filing ↗
Show recent Form 4 evidence (30 grouped rows)
DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-09-18Tachibana AaronSale (S)Common Stock2,931USD 16.22USD 47,541SEC filing ↗
2026-09-18Moore Stephen MichaelSale (S)Common Stock2,068USD 16.22USD 33,543SEC filing ↗
2026-09-18Hall Christopher MSale (S)Common Stock7,459USD 16.22USD 120,985SEC filing ↗
2026-09-18Chen RichardSale (S)Common Stock3,998USD 16.22USD 64,848SEC filing ↗
2026-07-15Chen RichardSale (S)Common Stock100,000USD 15.15USD 1,515,000SEC filing ↗
2026-07-15Chen RichardOption exercise / conversion (M)Common Stock100,000USD 2.44USD 244,000SEC filing ↗
2026-07-09Hall Christopher MSale (S)Common Stock100,000USD 15.08USD 1,508,000SEC filing ↗
2026-07-09Hall Christopher MOption exercise / conversion (M)Common Stock100,000USD 1.61USD 161,000SEC filing ↗
2026-06-29Tachibana AaronSale (S)Common Stock4,982USD 14.00USD 69,748SEC filing ↗
2026-06-29Tachibana AaronOption exercise / conversion (M)Common Stock4,982USD 5.32USD 26,504SEC filing ↗
2026-06-26Tachibana AaronSale (S)Common Stock51,251USD 13.18USD 675,488SEC filing ↗
2026-06-26Tachibana AaronOption exercise / conversion (M)Common Stock51,251USD 7.48USD 383,370SEC filing ↗
2026-06-26Hall Christopher MSale (S)Common Stock100,000USD 13.15USD 1,315,000SEC filing ↗
2026-06-26Hall Christopher MOption exercise / conversion (M)Common Stock100,000USD 1.61USD 161,000SEC filing ↗
2026-06-04Tachibana AaronSale (S)Common Stock40,000USD 12.01USD 480,400SEC filing ↗
2026-06-04Tachibana AaronOption exercise / conversion (M)Common Stock40,000USD 9.16USD 366,400SEC filing ↗
2026-05-29Tachibana AaronSale (S)Common Stock38,799USD 11.58USD 449,292SEC filing ↗
2026-05-29Tachibana AaronOption exercise / conversion (M)Common Stock38,799USD 9.16USD 355,399SEC filing ↗
2026-05-29Hall Christopher MSale (S)Common Stock80,091USD 11.02USD 882,603SEC filing ↗
2026-05-29Hall Christopher MOption exercise / conversion (M)Common Stock80,091USD 1.61USD 128,947SEC filing ↗
2026-05-28Hall Christopher MSale (S)Common Stock19,909USD 11.02USD 219,397SEC filing ↗
2026-05-28Hall Christopher MOption exercise / conversion (M)Common Stock19,909USD 1.61USD 32,053SEC filing ↗
2026-05-12EASTHAM KARINAward / grant (A)Common Stock6,250USD 0.00USD 0SEC filing ↗
2026-05-12WIDDER KENNETH JAward / grant (A)Common Stock6,250USD 0.00USD 0SEC filing ↗
2026-05-12Shoff LonnieAward / grant (A)Common Stock6,250USD 0.00USD 0SEC filing ↗
2026-05-12MYERS WOODROW A JRAward / grant (A)Common Stock6,250USD 0.00USD 0SEC filing ↗
2026-05-12EASTHAM KARINAward / grant (A)Common Stock6,250USD 0.00USD 0SEC filing ↗
2026-05-12Bloom Olivia KyusukAward / grant (A)Common Stock6,250USD 0.00USD 0SEC filing ↗
2026-05-12BOWMAN A BLAINEAward / grant (A)Common Stock6,250USD 0.00USD 0SEC filing ↗
2026-03-15Tachibana AaronAward / grant (A)Common Stock34,375USD 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 date2026-10-19
Ranking versionUS-v1.2
Data qualityPASS ELIGIBLE · —
TickerPSNL
CIK0001527753
SectorHealthcare
IndustryDiagnostics & Research Yahoo Finance
SEC SIC8071 Services-Medical Laboratories
ExchangeNasdaq

Data coverage

Local Form 4 history278 transaction lines from 2020-01-07 to 2026-09-18
20 P purchase lines · 162 S sale lines · 96 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.