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

Arcellx, Inc.

ACLX · — · CIK 0001786205 · Healthcare

INSIDER SIGNAL

No active buy signal

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

12 Form 4 transaction lines observed in the same window
0 sales · 12 option, withholding, award, gift or other lines

Last qualifying purchase2022-06-21 · BASKETT FOREST; Florence Anthony A. Jr.; Makhzoumi Mohamad; NEA 15 GP, LLC; NEA Partners 15, L.P.; New Enterprise Associates 15, L.P.; SANDELL SCOTT D; Sonsini Peter W. · $5.0M

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.

Insider activity timeline

Owner lanes show the latest 180 days. Symbol shape identifies the transaction type; sales remain context only.

AprMayJunJulAugSepOct
Carroll JillDirector
○
Behbahani AliDirector
○
Lubner David CharlesDirector
○
Galligan Andrew HDirector
○
Gilson MichelleCHIEF FINANCIAL OFFICER
○
Heery ChristopherCHIEF MEDICAL OFFICER
○
● Purchase▼ Sale○ Other

Showing the six most active owners; 1 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: 2022-06-21 · BASKETT FOREST; Florence Anthony A. Jr.; Makhzoumi Mohamad; NEA 15 GP, LLC; NEA Partners 15, L.P.; New Enterprise Associates 15, L.P.; SANDELL SCOTT D; Sonsini Peter W..

Recent Form 4 activity

0Purchases
12Sales
37Other Form 4 lines
24SEC filings · 365 days
BUYING0 qualifying P line(s) · 180 days
SELLING0 sale line(s) · context only
OTHER12 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 capture is under review for ACLX. Last attempt: 2026-10-18T21:13:29.333117+00:00. —

Short interest

The FINRA report lists no short interest for this ticker.

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
2022-06-21BASKETT FOREST; Florence Anthony A. Jr.; Makhzoumi Mohamad; NEA 15 GP, LLC; NEA Partners 15, L.P.; New Enterprise Associates 15, L.P.; SANDELL SCOTT D; Sonsini Peter W.Purchase (P)Common Stock312,500USD 16.00USD 5,000,000SEC filing ↗
2022-02-08George Simeon; SR ONE CAPITAL MANAGEMENT, LLC; SR ONE CAPITAL PARTNERS I, LP; SR One Capital Fund I Aggregator LP; SR One Co-Invest II Manager, LLC; SR One Co-Invest II, LLCPurchase (P)Common Stock1,666,667USD 15.00USD 25,000,005SEC filing ↗
2022-02-08Novo Holdings A/SPurchase (P)COMMON STOCK833,333USD 15.00USD 12,499,995SEC filing ↗
2022-02-08Carroll JillPurchase (P)Common Stock1,666,667USD 15.00USD 25,000,005SEC filing ↗
2022-02-08BASKETT FOREST; Florence Anthony A. Jr.; Makhzoumi Mohamad; NEA 15 GP, LLC; NEA Partners 15, L.P.; New Enterprise Associates 15, L.P.; SANDELL SCOTT D; Sonsini Peter W.Purchase (P)Common Stock1,583,333USD 15.00USD 23,749,995SEC filing ↗

Form 4 evidence

49 transaction lines in the latest 365-day window; 361 in local history.

DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-04-28Lubner David CharlesU (U)Common Stock21,659USD —USD —SEC filing ↗
2026-04-28Heery ChristopherU (U)Common Stock23,749USD —USD —SEC filing ↗
2026-04-28Gilson MichelleU (U)Common Stock72,048USD —USD —SEC filing ↗
Show recent Form 4 evidence (30 grouped rows)
DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-04-28Lubner David CharlesU (U)Common Stock21,659USD —USD —SEC filing ↗
2026-04-28Heery ChristopherU (U)Common Stock23,749USD —USD —SEC filing ↗
2026-04-28Gilson MichelleU (U)Common Stock72,048USD —USD —SEC filing ↗
2026-04-28Galligan Andrew HU (U)Common Stock5,000USD —USD —SEC filing ↗
2026-04-28Elghandour RamiU (U)Common Stock692,551USD —USD —SEC filing ↗
2026-04-28Carroll JillU (U)Common Stock1,479,148USD —USD —SEC filing ↗
2026-04-28Behbahani AliU (U)Common Stock4,631USD —USD —SEC filing ↗
2026-04-16Gilson MichelleOption exercise / conversion (M)Common Stock2,110USD 8.66USD 18,273SEC filing ↗
2026-04-15Gilson MichelleOption exercise / conversion (M)Common Stock36,000USD 8.66USD 311,760SEC filing ↗
2026-03-17Gilson MichelleGift (G)Common Stock5,000USD 0.00USD 0SEC filing ↗
2026-03-04Elghandour RamiGift (G)Common Stock101,164USD 0.00USD 0SEC filing ↗
2026-02-27Elghandour RamiSale (S)Common Stock89,916USD 113.92USD 10,243,231SEC filing ↗
2026-02-25Gilson MichelleSale (S)Common Stock11,219USD 113.82USD 1,276,947SEC filing ↗
2026-02-19Gilson MichelleSale (S)Common Stock8,384USD 68.29USD 572,554SEC filing ↗
2026-02-17Gilson MichelleSale (S)Common Stock11,291USD 69.50USD 784,770SEC filing ↗
2026-02-11Elghandour RamiGift (G)Common Stock198,000USD 0.00USD 0SEC filing ↗
2026-02-11Elghandour RamiGift (G)Common Stock218,500USD 0.00USD 0SEC filing ↗
2026-01-20Lubner David CharlesSale (S)Common Stock6,000USD 75.00USD 450,000SEC filing ↗
2026-01-20Lubner David CharlesOption exercise / conversion (M)Common Stock6,000USD 6.28USD 37,680SEC filing ↗
2026-01-14Heery ChristopherSale (S)Common Stock5,882USD 68.51USD 402,976SEC filing ↗
2026-01-13Heery ChristopherSale (S)Common Stock7,437USD 65.51USD 487,198SEC filing ↗
2026-01-12Heery ChristopherSale (S)Common Stock6,131USD 64.15USD 393,304SEC filing ↗
2026-01-06Elghandour RamiOption exercise / conversion (M)Common Stock55,991USD 0.00USD 0SEC filing ↗
2026-01-06Gilson MichelleOption exercise / conversion (M)Common Stock20,530USD 0.00USD 0SEC filing ↗
2026-01-06Heery ChristopherOption exercise / conversion (M)Common Stock13,064USD 0.00USD 0SEC filing ↗
2026-01-06Heery ChristopherOption exercise / conversion (M)Common Stock13,064USD 0.00USD 0SEC filing ↗
2026-01-06Gilson MichelleOption exercise / conversion (M)Common Stock20,530USD 0.00USD 0SEC filing ↗
2026-01-06Elghandour RamiOption exercise / conversion (M)Common Stock55,991USD 0.00USD 0SEC filing ↗
2026-01-03Elghandour RamiOption exercise / conversion (M)Common Stock53,098USD 0.00USD 0SEC filing ↗
2026-01-03Gilson MichelleOption exercise / conversion (M)Common Stock15,340USD 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 · —
TickerACLX
CIK0001786205
SectorHealthcare
Industry— Yahoo Finance
SEC SIC2836 Biological Products, (No Diagnostic Substances)
Exchange—

Data coverage

Local Form 4 history361 transaction lines from 2022-02-08 to 2026-04-28
7 P purchase lines · 187 S sale lines · 167 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.