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

ARROWHEAD PHARMACEUTICALS, INC.

ARWR · Nasdaq · CIK 0000879407 · Healthcare · Biotechnology

INSIDER SIGNAL

No active buy signal

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

8 Form 4 transaction lines observed in the same window
7 sales · 1 option, withholding, award, gift or other lines

Last qualifying purchase2024-04-18 · Lu Hongbo · $11.0K

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.

Insider activity timeline

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

AprMayJunJulAugSepOct
Cohen Matthew GregoryDirector
○
Lu HongboDirector
▼
Hamilton James CChief Medical Officer
▼
Apel Daniel JosephChief Financial Officer
▼
OLUKOTUN ADEOYE YDirector
▼
PERRY MICHAEL SDirector
▼
● 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: 2024-04-18 · Lu Hongbo.

Recent Form 4 activity

0Purchases
64Sales
17Other Form 4 lines
30SEC filings · 365 days
BUYING0 qualifying P line(s) · 180 days
SELLING7 sale line(s) · context only
OTHER1 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
-27.8%
3M
-26.8%
6M
-4.5%
12M
+63.9%

Volatility & liquidity

Volatility
67.1%
Beta
—
Avg daily value
USD 117.4M

Valuation

Market cap
—
P/E
—

Fundamentals

Profit margin
-0.2%
ROE
-0.3%
Industry
Biotechnology

Market data

Price data up to: 2026-10-07 · Price source: OpenBB/yfinance; volume from price cache (yfinance) · From SEC filings: Profit margin, ROE · Fiscal year ended: 2025-09-30 · Status: PASS

Short interest

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

Shares short
10,760,463
Previous report
9,272,290
Avg daily volume
2,669,000
Days to cover
4.0

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
2024-04-18Lu HongboPurchase (P)Common Stock500USD 22.00USD 11,000SEC filing ↗
2024-04-10Lu HongboPurchase (P)Common Stock500USD 25.00USD 12,500SEC filing ↗
2024-04-02Lu HongboPurchase (P)Common Stock150USD 27.34USD 4,101SEC filing ↗
2024-03-26Lu HongboPurchase (P)Common Stock850USD 27.50USD 23,375SEC filing ↗
2024-03-22Lu HongboPurchase (P)Common Stock400USD 28.00USD 11,200SEC filing ↗
2024-03-20Lu HongboPurchase (P)Common Stock1,000USD 27.50USD 27,500SEC filing ↗
2024-03-19Lu HongboPurchase (P)Common Stock1,000USD 28.00USD 28,000SEC filing ↗
2024-03-18Lu HongboPurchase (P)Common Stock1,000USD 27.49USD 27,490SEC filing ↗
2021-12-28GIVEN DOUGLAS BPurchase (P)Common Stock655USD 66.37USD 43,472SEC filing ↗
2020-10-08De Backer MariannePurchase (P)Common Stock1,000USD 50.47USD 50,465SEC filing ↗
2020-06-15De Backer MariannePurchase (P)Common Stock500USD 31.33USD 15,665SEC filing ↗
2020-04-15De Backer MariannePurchase (P)Common Stock500USD 35.40USD 17,700SEC filing ↗
2020-03-16De Backer MariannePurchase (P)Common Stock500USD 23.94USD 11,970SEC filing ↗
2020-03-12De Backer MariannePurchase (P)Common Stock500USD 24.80USD 12,400SEC filing ↗
2020-03-11De Backer MariannePurchase (P)Common Stock500USD 28.60USD 14,300SEC filing ↗

Form 4 evidence

81 transaction lines in the latest 365-day window; 477 in local history.

DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-08-18PERRY MICHAEL SSale (S)Common Stock11,600USD 87.30USD 1,012,680SEC filing ↗
2026-08-18OLUKOTUN ADEOYE YSale (S)Common Stock2,000USD 86.96USD 173,920SEC filing ↗
2026-06-15Cohen Matthew GregoryAward / grant (A)Common Stock11,882USD 0.00USD 0SEC filing ↗
Show recent Form 4 evidence (30 grouped rows)
DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-08-18PERRY MICHAEL SSale (S)Common Stock11,600USD 87.30USD 1,012,680SEC filing ↗
2026-08-18OLUKOTUN ADEOYE YSale (S)Common Stock2,000USD 86.96USD 173,920SEC filing ↗
2026-06-15Cohen Matthew GregoryAward / grant (A)Common Stock11,882USD 0.00USD 0SEC filing ↗
2026-05-12Lu HongboSale (S)Common Stock2,970USD 76.88USD 228,334SEC filing ↗
2026-04-23Hamilton James CSale (S)Common Stock10,000USD 75.00USD 750,000SEC filing ↗
2026-04-22Apel Daniel JosephSale (S)Common Stock13,095USD 71.35USD 934,285SEC filing ↗
2026-03-05Hamilton James CSale (S)Common Stock10,000USD 64.19USD 641,900SEC filing ↗
2026-01-06O'Brien PatrickGift (G)Common Stock980USD 0.00USD 0SEC filing ↗
2026-01-06O'Brien PatrickAward / grant (A)Common Stock75,000USD 0.00USD 0SEC filing ↗
2026-01-06Hamilton James CAward / grant (A)Common Stock75,000USD 0.00USD 0SEC filing ↗
2026-01-06Apel Daniel JosephAward / grant (A)Common Stock75,000USD 0.00USD 0SEC filing ↗
2026-01-05O'Brien PatrickSale (S)Common Stock49,493USD 63.11USD 3,123,349SEC filing ↗
2026-01-05Hamilton James CSale (S)Common Stock40,164USD 63.11USD 2,534,661SEC filing ↗
2026-01-02Anzalone Christopher RichardSale (S)Common Stock13,187USD 66.10USD 871,703SEC filing ↗
2025-12-31O'Brien PatrickGift (G)Common Stock560USD 0.00USD 0SEC filing ↗
2025-12-29Anzalone Christopher RichardSale (S)Common Stock51,726USD 69.13USD 3,575,575SEC filing ↗
2025-12-29Anzalone Christopher RichardOption exercise / conversion (M)Common Stock51,726USD 6.15USD 318,115SEC filing ↗
2025-12-26Ferrari MauroSale (S)Common Stock7,530USD 70.00USD 527,100SEC filing ↗
2025-12-22Anzalone Christopher RichardSale (S)Common Stock12,586USD 68.44USD 861,340SEC filing ↗
2025-12-19Waddill William D.Sale (S)Common Stock8,367USD 67.65USD 566,038SEC filing ↗
2025-12-19Vakiener VictoriaSale (S)Common Stock10,040USD 67.68USD 679,491SEC filing ↗
2025-12-19OLUKOTUN ADEOYE YSale (S)Common Stock10,000USD 67.66USD 676,623SEC filing ↗
2025-12-19Anzalone Christopher RichardSale (S)Common Stock13,445USD 67.66USD 909,683SEC filing ↗
2025-12-17Anzalone Christopher RichardSale (S)Common Stock85,000USD 64.04USD 5,443,462SEC filing ↗
2025-12-16Waddill William D.Award / grant (A)Common Stock7,819USD 0.00USD 0SEC filing ↗
2025-12-16Vakiener VictoriaAward / grant (A)Common Stock7,819USD 0.00USD 0SEC filing ↗
2025-12-16PERRY MICHAEL SAward / grant (A)Common Stock7,819USD 0.00USD 0SEC filing ↗
2025-12-16OLUKOTUN ADEOYE YAward / grant (A)Common Stock7,819USD 0.00USD 0SEC filing ↗
2025-12-16Lu HongboAward / grant (A)Common Stock7,819USD 0.00USD 0SEC filing ↗
2025-12-16INGRAM DOUGLAS SAward / grant (A)Common Stock7,819USD 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 · —
TickerARWR
CIK0000879407
SectorHealthcare
IndustryBiotechnology Yahoo Finance
SEC SIC2834 Pharmaceutical Preparations
ExchangeNasdaq

Data coverage

Local Form 4 history477 transaction lines from 2020-01-01 to 2026-08-18
19 P purchase lines · 312 S sale lines · 146 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.