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

Avidity Biosciences, Inc.

RNAM · — · CIK 0001599901 · Healthcare

INSIDER SIGNAL

No active buy signal

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

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

Last qualifying purchase2021-08-04 · RTW INVESTMENTS, LP; WONG RODERICK · $14.4M

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

No Form 4 transaction event is present in the current 180-day window.

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: 2021-08-04 · RTW INVESTMENTS, LP; WONG RODERICK.

Recent Form 4 activity

0Purchases
19Sales
38Other Form 4 lines
39SEC filings · 365 days
BUYING0 qualifying P line(s) · 180 days
SELLING0 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 has not been captured for this ticker yet. The daily market-context job processes the US universe in rotating batches.

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
2021-08-04RTW INVESTMENTS, LP; WONG RODERICKPurchase (P)Common Stock800,000USD 18.00USD 14,400,000SEC filing ↗
2020-06-16Chen Bihua; Cormorant Asset Management, LP; Cormorant Global Healthcare Master Fund, LP; Cormorant Private Healthcare Fund II, LPPurchase (P)Common Stock300,000USD 18.00USD 5,400,000SEC filing ↗
2020-06-16RTW INVESTMENTS, LP; WONG RODERICKPurchase (P)Common Stock950,000USD 18.00USD 17,100,000SEC filing ↗

Form 4 evidence

57 transaction lines in the latest 365-day window; 331 in local history.

DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-02-27WILSON TROY EDWARDD (D)Common Stock78,802USD —USD —SEC filing ↗
2026-02-27Thompson TamarD (D)Common Stock6,692USD —USD —SEC filing ↗
2026-02-27Skerjanec SimonaD (D)Common Stock6,692USD —USD —SEC filing ↗
Show recent Form 4 evidence (30 grouped rows)
DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-02-27WILSON TROY EDWARDD (D)Common Stock78,802USD —USD —SEC filing ↗
2026-02-27Thompson TamarD (D)Common Stock6,692USD —USD —SEC filing ↗
2026-02-27Skerjanec SimonaD (D)Common Stock6,692USD —USD —SEC filing ↗
2026-02-27Mosbrooker EricD (D)Common Stock79,413USD —USD —SEC filing ↗
2026-02-27Moriarty John BD (D)Common Stock92,054USD —USD —SEC filing ↗
2026-02-27McCarthy TeresaD (D)Common Stock165,296USD —USD —SEC filing ↗
2026-02-27MacLean Michael FD (D)Common Stock133,977USD —USD —SEC filing ↗
2026-02-27LEVIN ARTHUR AD (D)Common Stock147,934USD —USD —SEC filing ↗
2026-02-27Kim Jean JinsunD (D)Common Stock6,692USD —USD —SEC filing ↗
2026-02-27Kaye Edward M. MDD (D)Common Stock6,692USD —USD —SEC filing ↗
2026-02-27Hughes Steven GeorgeD (D)Common Stock115,857USD —USD —SEC filing ↗
2026-02-27Henig NoreenD (D)Common Stock6,692USD —USD —SEC filing ↗
2026-02-27Gallagher Kathleen P.D (D)Common Stock80,303USD —USD —SEC filing ↗
2026-02-27Flanagan W. MichaelD (D)Common Stock150,365USD —USD —SEC filing ↗
2026-02-27Calderaro Charles IIID (D)Common Stock98,547USD —USD —SEC filing ↗
2026-02-27Boyce SarahD (D)Common Stock474,861USD —USD —SEC filing ↗
2026-02-27BOESS CARSTEND (D)Common Stock6,692USD —USD —SEC filing ↗
2026-01-21McCarthy TeresaSale (S)Common Stock2,929USD 72.45USD 212,206SEC filing ↗
2026-01-21MacLean Michael FSale (S)Common Stock4,542USD 72.45USD 329,068SEC filing ↗
2026-01-21LEVIN ARTHUR ASale (S)Common Stock1,758USD 72.45USD 127,367SEC filing ↗
2026-01-21Hughes Steven GeorgeSale (S)Common Stock4,895USD 72.45USD 354,643SEC filing ↗
2026-01-21Flanagan W. MichaelSale (S)Common Stock6,534USD 72.45USD 473,388SEC filing ↗
2026-01-21Boyce SarahSale (S)Common Stock14,387USD 72.45USD 1,042,338SEC filing ↗
2026-01-07Moriarty John BSale (S)Common Stock2,374USD 72.23USD 171,474SEC filing ↗
2026-01-07McCarthy TeresaSale (S)Common Stock1,965USD 72.23USD 141,932SEC filing ↗
2026-01-07MacLean Michael FSale (S)Common Stock1,974USD 72.23USD 142,582SEC filing ↗
2026-01-07Hughes Steven GeorgeSale (S)Common Stock2,373USD 72.23USD 171,402SEC filing ↗
2026-01-07Flanagan W. MichaelSale (S)Common Stock2,373USD 72.23USD 171,402SEC filing ↗
2026-01-07Calderaro Charles IIISale (S)Common Stock3,727USD 72.23USD 269,201SEC filing ↗
2026-01-07Boyce SarahSale (S)Common Stock8,576USD 72.23USD 619,444SEC 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 · —
TickerRNAM
CIK0001599901
SectorHealthcare
Industry— Yahoo Finance
SEC SIC2834 Pharmaceutical Preparations
Exchange—

Data coverage

Local Form 4 history331 transaction lines from 2020-06-16 to 2026-02-27
3 P purchase lines · 158 S sale lines · 170 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.