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

SIRIUS XM HOLDINGS INC.

(SIRI) · Nasdaq · CIK 0000908937 · Communication Services · Entertainment

INSIDER SIGNAL

No active buy signal

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

43 Form 4 transaction lines observed in the same window
3 sales · 40 option, withholding, award, gift or other lines

Last qualifying purchase2025-08-04 · BERKSHIRE HATHAWAY INC; BUFFETT WARREN E · $22.4M

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
HARTENSTEIN EDDY WDirector
○○○○○
Greenstein Scott AndrewPres. & Chief Content Officer
○○○▼○
Salen KristinaDirector
○○▼○
Procope JonelleDirector
○○▼○
Zaslav DavidDirector
○○○
Sud AnjaliDirector
○○○
● Purchase▼ Sale○ Other

Showing the six most active owners; 8 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: 2025-08-04 · BERKSHIRE HATHAWAY INC; BUFFETT WARREN E.

Recent Form 4 activity

0Purchases
4Sales
77Other Form 4 lines
75SEC filings · 365 days
BUYING0 qualifying P line(s) · 180 days
SELLING3 sale line(s) · context only
OTHER40 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
37,493,814
Previous report
36,971,997
Avg daily volume
5,002,700
Days to cover
7.5

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
2025-08-04BERKSHIRE HATHAWAY INC; BUFFETT WARREN EPurchase (P)Common Stock1,037,199USD 21.63USD 22,434,614SEC filing ↗
2025-08-01BERKSHIRE HATHAWAY INC; BUFFETT WARREN EPurchase (P)Common Stock1,930,000USD 21.02USD 40,568,600SEC filing ↗
2025-07-31BERKSHIRE HATHAWAY INC; BUFFETT WARREN EPurchase (P)Common Stock2,063,226USD 21.06USD 43,443,577SEC filing ↗
2025-02-03BERKSHIRE HATHAWAY INC; BUFFETT WARREN EPurchase (P)Common Stock716,978USD 23.71USD 17,000,797SEC filing ↗
2025-01-31BERKSHIRE HATHAWAY INC; BUFFETT WARREN EPurchase (P)Common Stock840,000USD 23.62USD 19,840,800SEC filing ↗
2025-01-30BERKSHIRE HATHAWAY INC; BUFFETT WARREN EPurchase (P)Common Stock751,141USD 22.79USD 17,118,503SEC filing ↗
2024-12-19BERKSHIRE HATHAWAY INC; BUFFETT WARREN EPurchase (P)Common Stock2,069,377USD 20.86USD 43,167,499SEC filing ↗
2024-12-18BERKSHIRE HATHAWAY INC; BUFFETT WARREN EPurchase (P)Common Stock1,454,467USD 22.14USD 32,207,423SEC filing ↗
2024-12-17BERKSHIRE HATHAWAY INC; BUFFETT WARREN EPurchase (P)Common Stock1,440,000USD 22.13USD 31,867,200SEC filing ↗
2024-10-31BERKSHIRE HATHAWAY INC; BUFFETT WARREN EPurchase (P)Common Stock679,207USD 26.59USD 18,060,114SEC filing ↗
2024-10-30BERKSHIRE HATHAWAY INC; BUFFETT WARREN EPurchase (P)Common Stock925,205USD 27.44USD 25,387,625SEC filing ↗
2024-10-29BERKSHIRE HATHAWAY INC; BUFFETT WARREN EPurchase (P)Common Stock623,527USD 27.65USD 17,240,522SEC filing ↗
2024-10-18BERKSHIRE HATHAWAY INC; BUFFETT WARREN EPurchase (P)Common Stock175,569USD 27.43USD 4,815,858SEC filing ↗
2024-10-17BERKSHIRE HATHAWAY INC; BUFFETT WARREN EPurchase (P)Common Stock1,040,000USD 27.01USD 28,090,400SEC filing ↗
2024-10-16BERKSHIRE HATHAWAY INC; BUFFETT WARREN EPurchase (P)Common Stock342,133USD 26.99USD 9,234,170SEC filing ↗

Form 4 evidence

81 transaction lines in the latest 365-day window; 827 in local history.

DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-09-09HARTENSTEIN EDDY WGift (G)Common Stock8,193USD 0.00USD 0SEC filing ↗
2026-08-26Zaslav DavidAward / grant (A)Common Stock60USD 0.00USD 0SEC filing ↗
2026-08-26Witz Jennifer CAward / grant (A)Common Stock1,419USD 0.00USD 0SEC filing ↗
Show recent Form 4 evidence (30 grouped rows)
DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-09-09HARTENSTEIN EDDY WGift (G)Common Stock8,193USD 0.00USD 0SEC filing ↗
2026-08-26Zaslav DavidAward / grant (A)Common Stock60USD 0.00USD 0SEC filing ↗
2026-08-26Witz Jennifer CAward / grant (A)Common Stock1,419USD 0.00USD 0SEC filing ↗
2026-08-26Sud AnjaliAward / grant (A)Common Stock60USD 0.00USD 0SEC filing ↗
2026-08-26Stephenson DaveAward / grant (A)Common Stock60USD 0.00USD 0SEC filing ↗
2026-08-26Salen KristinaAward / grant (A)Common Stock60USD 0.00USD 0SEC filing ↗
2026-08-26Rapino MichaelAward / grant (A)Common Stock60USD 0.00USD 0SEC filing ↗
2026-08-26Procope JonelleAward / grant (A)Common Stock60USD 0.00USD 0SEC filing ↗
2026-08-26Mothner EveAward / grant (A)Common Stock1,528USD 0.00USD 0SEC filing ↗
2026-08-26MALONE EVAN DANIELAward / grant (A)Common Stock60USD 0.00USD 0SEC filing ↗
2026-08-26MAFFEI GREGORY BAward / grant (A)Common Stock60USD 0.00USD 0SEC filing ↗
2026-08-26HARTENSTEIN EDDY WAward / grant (A)Common Stock60USD 0.00USD 0SEC filing ↗
2026-08-26Greenstein Scott AndrewAward / grant (A)Common Stock177USD 0.00USD 0SEC filing ↗
2026-08-26Coughlin ZacharyAward / grant (A)Common Stock2,621USD 0.00USD 0SEC filing ↗
2026-08-06Procope JonelleSale (S)Common Stock16,672USD 29.97USD 499,660SEC filing ↗
2026-07-13HARTENSTEIN EDDY WGift (G)Common Stock6,688USD 0.00USD 0SEC filing ↗
2026-05-29Zaslav DavidAward / grant (A)Common Stock6,775USD 0.00USD 0SEC filing ↗
2026-05-29Sud AnjaliAward / grant (A)Common Stock6,775USD 0.00USD 0SEC filing ↗
2026-05-29Stephenson DaveAward / grant (A)Common Stock6,775USD 0.00USD 0SEC filing ↗
2026-05-29Salen KristinaSale (S)Common Stock4,097USD 29.57USD 121,148SEC filing ↗
2026-05-29Salen KristinaAward / grant (A)Common Stock6,775USD 0.00USD 0SEC filing ↗
2026-05-29Rapino MichaelAward / grant (A)Common Stock6,775USD 0.00USD 0SEC filing ↗
2026-05-29Procope JonelleAward / grant (A)Common Stock6,775USD 0.00USD 0SEC filing ↗
2026-05-29MALONE EVAN DANIELAward / grant (A)Common Stock6,775USD 0.00USD 0SEC filing ↗
2026-05-29MAFFEI GREGORY BAward / grant (A)Common Stock6,775USD 0.00USD 0SEC filing ↗
2026-05-29HARTENSTEIN EDDY WAward / grant (A)Common Stock6,775USD 0.00USD 0SEC filing ↗
2026-05-27Zaslav DavidAward / grant (A)Common Stock83USD 0.00USD 0SEC filing ↗
2026-05-27Witz Jennifer CAward / grant (A)Common Stock1,635USD 0.00USD 0SEC filing ↗
2026-05-27Thorsen WayneAward / grant (A)Common Stock1,871USD 0.00USD 0SEC filing ↗
2026-05-27Sud AnjaliAward / grant (A)Common Stock83USD 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 · —
Ticker(SIRI)
CIK0000908937
SectorCommunication Services
IndustryEntertainment Yahoo Finance
SEC SIC4832 Radio Broadcasting Stations
ExchangeNasdaq

Data coverage

Local Form 4 history827 transaction lines from 2020-01-02 to 2026-09-09
25 P purchase lines · 34 S sale lines · 768 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.