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

iRhythm Holdings, Inc.

IRTC · Nasdaq · CIK 0001388658 · Healthcare · Medical Devices

INSIDER SIGNAL

No active buy signal

1 qualifying P purchase group
in the current 180-day scoring window

38 Form 4 transaction lines observed in the same window
19 sales · 18 option, withholding, award, gift or other lines

Last qualifying purchase2026-05-11 · TALWALKAR ABHIJIT Y · $56.9K

WHY NO ACTIVE SIGNAL?

Purchase activityPresent
Recent buying1 qualifying line group(s)
Recent salesHigh
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
Shrishrimal SumiEVP, Chief Risk Officer
○▼○▼
Turakhia MinangCHIEF MED/SCI OFCR EVP ADVTECH
○▼○▼
Patterson ChadCHIEF COMM & PRODUCT OFFICER
○▼○▼
Blackford Quentin S.President and CEO
○○▼
TALWALKAR ABHIJIT YDirector
●▼○
Rosenbaum Marc WadeChief Accounting Officer
○▼
● Purchase▼ Sale○ Other

Showing the six most active owners; 12 additional owner(s) remain in Form 4 evidence.

Purchase breadth & concentration

QUALIFYING BUYERS1
PURCHASE CONCENTRATION100%Largest buyer: TALWALKAR ABHIJIT Y · $56.9K
CLUSTER BUYING · 15D1 insiderPeak activity: 2026-05-11–2026-05-11

Roles in the peak window: Director. Concentration uses priced qualifying P lines only and does not change the saved score.

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: 2026-05-11 · TALWALKAR ABHIJIT Y.

Recent Form 4 activity

1Purchases
66Sales
42Other Form 4 lines
65SEC filings · 365 days
BUYING1 qualifying P line(s) · 180 days
SELLING19 sale line(s) · context only
OTHER18 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
3,033,358
Previous report
3,054,907
Avg daily volume
518,844
Days to cover
5.8

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
2026-05-11TALWALKAR ABHIJIT YPurchase (P)Common Stock5,312USD 10.71USD 56,892SEC filing ↗
2024-11-04TALWALKAR ABHIJIT YPurchase (P)Common Stock6,664USD 75.16USD 500,866SEC filing ↗
2024-05-31Patterson ChadPurchase (P)Common Stock280USD 74.98USD 20,994SEC filing ↗
2023-06-06Blackford Quentin S.Purchase (P)Common Stock9,755USD 102.27USD 997,644SEC filing ↗

Form 4 evidence

109 transaction lines in the latest 365-day window; 635 in local history.

DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-09-02Wilson Daniel G.Sale (S)Common Stock773USD 121.83USD 94,175SEC filing ↗
2026-08-10Turakhia MinangSale (S)Common Stock7,093USD 124.65USD 884,142SEC filing ↗
2026-08-10Shrishrimal SumiSale (S)Common Stock5,372USD 124.65USD 669,620SEC filing ↗
Show recent Form 4 evidence (30 grouped rows)
DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-09-02Wilson Daniel G.Sale (S)Common Stock773USD 121.83USD 94,175SEC filing ↗
2026-08-10Turakhia MinangSale (S)Common Stock7,093USD 124.65USD 884,142SEC filing ↗
2026-08-10Shrishrimal SumiSale (S)Common Stock5,372USD 124.65USD 669,620SEC filing ↗
2026-08-10Patterson ChadSale (S)Common Stock7,093USD 124.65USD 884,142SEC filing ↗
2026-08-10Murphy Patrick MichaelSale (S)Common Stock7,093USD 124.65USD 884,142SEC filing ↗
2026-08-10Blackford Quentin S.Sale (S)Common Stock26,859USD 124.65USD 3,347,974SEC filing ↗
2026-08-07Turakhia MinangAward / grant (A)Common Stock13,589USD 0.00USD 0SEC filing ↗
2026-08-07Shrishrimal SumiAward / grant (A)Common Stock9,706USD 0.00USD 0SEC filing ↗
2026-08-07Patterson ChadAward / grant (A)Common Stock13,589USD 0.00USD 0SEC filing ↗
2026-08-07Murphy Patrick MichaelAward / grant (A)Common Stock13,589USD 0.00USD 0SEC filing ↗
2026-08-07Blackford Quentin S.Award / grant (A)Common Stock48,534USD 0.00USD 0SEC filing ↗
2026-08-03Smith MervinSale (S)Common Stock617USD 122.12USD 75,348SEC filing ↗
2026-08-03Rodda JulianneSale (S)Common Stock2,112USD 122.12USD 257,917SEC filing ↗
2026-08-03Patterson ChadSale (S)Common Stock2,712USD 122.12USD 331,189SEC filing ↗
2026-07-02Turakhia MinangSale (S)Common Stock1,423USD 124.71USD 177,462SEC filing ↗
2026-07-02Freeman Sean ClintonSale (S)Common Stock918USD 124.71USD 114,484SEC filing ↗
2026-06-02Shrishrimal SumiSale (S)Common Stock1,716USD 108.19USD 185,654SEC filing ↗
2026-06-02Rosenbaum Marc WadeSale (S)Common Stock729USD 108.19USD 78,871SEC filing ↗
2026-05-29Shrishrimal SumiAward / grant (A)Common Stock133USD 96.82USD 12,877SEC filing ↗
2026-05-29Rosenbaum Marc WadeAward / grant (A)Common Stock178USD 96.82USD 17,234SEC filing ↗
2026-05-29Turakhia MinangAward / grant (A)Common Stock137USD 96.82USD 13,264SEC filing ↗
2026-05-29Patterson ChadAward / grant (A)Common Stock177USD 96.82USD 17,137SEC filing ↗
2026-05-29Freeman Sean ClintonAward / grant (A)Common Stock273USD 96.82USD 26,432SEC filing ↗
2026-05-29Blackford Quentin S.Award / grant (A)Common Stock178USD 96.82USD 17,234SEC filing ↗
2026-05-27YOOR BRIAN BAward / grant (A)Common Stock1,573USD 0.00USD 0SEC filing ↗
2026-05-27TALWALKAR ABHIJIT YAward / grant (A)Common Stock1,573USD 0.00USD 0SEC filing ↗
2026-05-27OBOYLE KEVIN CAward / grant (A)Common Stock1,573USD 0.00USD 0SEC filing ↗
2026-05-27MCGINNIS KAREN KAward / grant (A)Common Stock1,573USD 0.00USD 0SEC filing ↗
2026-05-27Ling KarenAward / grant (A)Common Stock1,573USD 0.00USD 0SEC filing ↗
2026-05-27Bodaken Bruce G.Award / grant (A)Common Stock1,573USD 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 · —
TickerIRTC
CIK0001388658
SectorHealthcare
IndustryMedical Devices Yahoo Finance
SEC SIC3841 Surgical & Medical Instruments & Apparatus
ExchangeNasdaq

Data coverage

Local Form 4 history635 transaction lines from 2020-01-14 to 2026-09-02
4 P purchase lines · 364 S sale lines · 267 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.