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

ALX ONCOLOGY HOLDINGS INC

ALXO · Nasdaq · CIK 0001810182 · Healthcare · Biotechnology

INSIDER SIGNAL

No active buy signal

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

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

Last qualifying purchase2026-02-02 · GOODMAN COREY S · $5.0M

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
Wong ShellySVP, FINANCE AND CAO
▼▼
Lettmann JasonCHIEF EXECUTIVE OFFICER
▼
● 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: 2026-02-02 · GOODMAN COREY S.

Recent Form 4 activity

1Purchases
7Sales
1Other Form 4 lines
9SEC filings · 365 days
BUYING0 qualifying P line(s) · 180 days
SELLING3 sale line(s) · context only
OTHER0 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 provides additional background on recent price performance and risk. It does not affect the Insider Signal.

Price performance

1M
-41.1%
3M
-44.1%
6M
-37.8%
12M
—

Volatility & liquidity

Volatility
91.8%
Beta
—
Avg daily value
—

Valuation

Market cap
—
P/E
—

Fundamentals

Profit margin
—
ROE
-391.4%
Industry
Biotechnology

Market data

Price data up to: 2026-10-02 · Price source: OpenBB/yfinance · From SEC filings: ROE · Fiscal year ended: 2025-12-31 · Status: PASS

Short interest

Short interest is external context reported to FINRA by broker-dealers. It does not affect the Insider Signal.

Shares short
5,673,137
Previous report
6,273,652
Avg daily volume
1,495,736
Days to cover
3.8

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
2026-02-02GOODMAN COREY SPurchase (P)Common Stock3,184,713USD 1.57USD 4,999,999SEC filing ↗
2025-09-17Lettmann JasonPurchase (P)Common Stock71,163USD 1.08USD 76,856SEC filing ↗
2025-09-16Lettmann JasonPurchase (P)Common Stock21,070USD 1.07USD 22,545SEC filing ↗
2025-08-18Shantharam HarishPurchase (P)Common Stock75,000USD 0.78USD 58,500SEC filing ↗
2024-12-02Hemrajani RekhaPurchase (P)Common Stock30,000USD 1.55USD 46,500SEC filing ↗
2024-06-13GARCIA PETER SPurchase (P)Common Stock12,000USD 8.53USD 102,360SEC filing ↗
2024-06-13GARCIA PETER SPurchase (P)Common Stock12,000USD 8.53USD 102,360SEC filing ↗
2024-03-14Lettmann JasonPurchase (P)Common Stock4,400USD 11.31USD 49,764SEC filing ↗
2020-12-14Graham G. WalmsleyPurchase (P)Common Stock20,000USD 76.00USD 1,520,000SEC filing ↗
2020-07-21Carusi Michael A; George Jean; LSV Associates II, LLC; LSV Associates, LLC; Lightstone Ventures (A), L.P.; Lightstone Ventures II (A), L.P.; Lightstone Ventures II, L.P.; Lightstone Ventures, L.P.; Plain Henry A JRPurchase (P)Common Stock400,000USD 19.00USD 7,600,000SEC filing ↗
2020-07-21Vivo Capital Fund IX, L.P.; Vivo Capital IX, LLC; Vivo Opportunity Fund, L.P.; Vivo Opportunity, LLCPurchase (P)Common Stock975,000USD 19.00USD 18,525,000SEC filing ↗
2020-07-21Pietzke SteffenPurchase (P)Common Stock3,000USD 19.00USD 57,000SEC filing ↗
2020-07-21Lettmann JasonPurchase (P)Common Stock400,000USD 19.00USD 7,600,000SEC filing ↗
2020-07-21Hemrajani RekhaPurchase (P)Common Stock3,000USD 19.00USD 57,000SEC filing ↗
2020-07-21Graham G. WalmsleyPurchase (P)Common Stock975,000USD 19.00USD 18,525,000SEC filing ↗

Form 4 evidence

9 transaction lines in the latest 365-day window; 276 in local history.

DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-08-17Wong ShellySale (S)Common Stock573USD 1.93USD 1,106SEC filing ↗
2026-08-17Lettmann JasonSale (S)Common Stock2,230USD 1.93USD 4,304SEC filing ↗
2026-07-01Wong ShellySale (S)Common Stock1,404USD 2.04USD 2,864SEC filing ↗
Show recent Form 4 evidence (9 grouped rows)
DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-08-17Wong ShellySale (S)Common Stock573USD 1.93USD 1,106SEC filing ↗
2026-08-17Lettmann JasonSale (S)Common Stock2,230USD 1.93USD 4,304SEC filing ↗
2026-07-01Wong ShellySale (S)Common Stock1,404USD 2.04USD 2,864SEC filing ↗
2026-03-19Pinto ShellySale (S)Common Stock903USD 2.17USD 1,960SEC filing ↗
2026-03-19Lettmann JasonSale (S)Common Stock12,311USD 2.17USD 26,715SEC filing ↗
2026-02-18Pinto ShellySale (S)Common Stock565USD 2.27USD 1,283SEC filing ↗
2026-02-17Lettmann JasonTax withholding (F)Common Stock2,201USD 2.27USD 4,996SEC filing ↗
2026-02-02GOODMAN COREY SPurchase (P)Common Stock3,184,713USD 1.57USD 4,999,999SEC filing ↗
2026-01-06Pinto ShellySale (S)Common Stock3,925USD 1.11USD 4,357SEC 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 · —
TickerALXO
CIK0001810182
SectorHealthcare
IndustryBiotechnology Yahoo Finance
SEC SIC2834 Pharmaceutical Preparations
ExchangeNasdaq

Data coverage

Local Form 4 history276 transaction lines from 2020-07-21 to 2026-08-17
22 P purchase lines · 188 S sale lines · 66 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.