INSIDER
01Overview02Daily Brief03Live04Congress05Corporate Insiders06Government Money07Political Influence08Institutions09Washington Network10Follow the Power11Disclosure Clock12AI Investigator13Watchlist
ConvergenceINSIDER AlphaSignal ledgerHistorical ReplayRobinhood ChainProofTradingTokenProMethodologyMatch reviewLaunch readiness
Data sources

Public disclosures only. Scores flag unusual patterns and are not evidence of wrongdoing. Not investment advice.

RH CHAIN…
OverviewDaily BriefLiveCongressCorporate InsidersGovernment MoneyPolitical InfluenceInstitutionsWashington NetworkFollow the PowerDisclosure ClockAI InvestigatorWatchlistConvergenceINSIDER AlphaSignal ledgerHistorical ReplayRobinhood ChainProofTradingTokenProMethodologyMatch reviewLaunch readiness
01Overview02Daily Brief03Live04Congress05Corporate Insiders06Government Money07Political Influence08Institutions09Washington Network10Follow the Power11Disclosure Clock12AI Investigator13Watchlist
ConvergenceINSIDER AlphaSignal ledgerHistorical ReplayRobinhood ChainProofTradingTokenProMethodologyMatch reviewLaunch readiness
OverviewDaily BriefLiveCongressCorporate InsidersGovernment MoneyPolitical InfluenceInstitutionsWashington NetworkFollow the PowerDisclosure ClockAI InvestigatorWatchlistConvergenceINSIDER AlphaSignal ledgerHistorical ReplayRobinhood ChainProofTradingTokenProMethodologyMatch reviewLaunch readiness
Data sources
SEC FORM 49m ago
HOUSE PTR8m ago
SEC 13F8m ago
ROBINHOOD CHAIN8m ago
HOUSE PTR/Partial saleVerified data

Mark Alford sold BRK.B

Self · sold @ $493.42/share SPY – 8.318 shares sold @ $670.024/share DIA – 8.426 shares sold @ $470.985/share SPYD – 57.383 shares sold @ $46.04/share AMZN – 25 shares sold @ $209.40/share AAPL – 20.313 shares sold @ $253.45/share QQQ – 4.105 shares sold @ $601.68/share PYPL – 9.021 shares sold @ $47.735/share Berkshire Hathaway Inc. New Common Stock

Side
SELL
Value range
$1,001 – $15K
Shares
Not disclosed
Price
—
Executed
Mar 16, 2026
Disclosed
Mar 31, 2026
Disclosure timeline15 days from execution to publication · legal deadline 45 days
Mar 16 executedMar 31, 2026 disclosed

BRK.B · daily

Yahoo Finance chart API
▲Execution▼Disclosure●Material company filing●Other disclosed buy●Other disclosed sellUnofficial public endpoint; daily OHLCV, split-adjusted. Replace with a licensed feed for production.

Insider Score

Experimental signal
25/ 100 · ROUTINE
Methodology →
  • Transaction type+10 / 20

    Partial sale

  • Relative size+2 / 25

    Disclosed range starting at $1K

  • Filing timing0 / 15

    Disclosed 15 days after execution (STOCK Act deadline: 45)

  • Historical behavior+8 / 15

    First recorded trade by this actor in this security

  • Frequency & clustering+5 / 15

    1 other actor traded the same direction within 14 days

  • Market events0 / 10

    No material company filing within 60 days after the trade

    • The Insider Score measures how far a disclosure deviates from normal filing patterns. A high score is a prompt for research, not evidence of illegal insider trading.

    Other disclosed activity · BRK.B

    ScoreActorSecuritySideValueExecutedDisclosedLagSourceEvidence
    24
    Pete SessionsRSelf
    BRK.BBerkshire Hathaway Inc. New Common Stock
    Sale
    		SELL$15K – $50KOct 15, 2026Oct 27, 2026
    traded Oct 15, 2026
    		+12dHOUSE PTR

    Evidence

    20
    RM
    Richard Dean McCormickSelf
    BRK.BBerkshire Hathaway Inc. New Common Stock
    Purchase
    		BUY$1,001 – $15KSep 18, 2026Oct 14, 2026
    traded Sep 18, 2026
    		+26dHOUSE PTR

    Evidence

    27
    Maria Elvira SalazarRSelf
    BRK.BBerkshire Hathaway Inc. New Common Stock
    Partial sale
    		SELL$1,001 – $15KSep 24, 2026Oct 7, 2026
    traded Sep 24, 2026
    		+13dHOUSE PTR

    Evidence

    29
    Maria Elvira SalazarRSelf
    BRK.BBerkshire Hathaway Inc. New Common Stock
    Purchase
    		BUY$1,001 – $15KAug 7, 2026Sep 9, 2026
    traded Aug 7, 2026
    		+33dHOUSE PTR

    Evidence

    29
    RM
    Richard Dean McCormickSelf
    BRK.BBerkshire Hathaway Inc. New Common Stock
    Purchase
    		BUY$1,001 – $15KJul 30, 2026Aug 14, 2026
    traded Jul 30, 2026
    		+15dHOUSE PTR

    Evidence

    29
    Maria Elvira SalazarRSelf
    BRK.BBerkshire Hathaway Inc. New Common Stock
    Purchase
    		BUY$1,001 – $15KJul 28, 2026Aug 7, 2026
    traded Jul 28, 2026
    		+10dHOUSE PTR

    Evidence

    33
    Maria Elvira SalazarRSelf
    BRK.BBerkshire Hathaway Inc. New Common Stock
    Purchase
    		BUY$15K – $50KJul 28, 2026Aug 7, 2026
    traded Jul 28, 2026
    		+10dHOUSE PTR

    Evidence

    20
    Josh GottheimerDJoint
    BRK.BBerkshire Hathaway Inc. New Common Stock
    Partial sale
    		SELL$1,001 – $15KMay 4, 2026Jun 3, 2026
    traded May 4, 2026
    		+30dHOUSE PTR

    Evidence

    20
    Josh GottheimerDJoint
    BRK.BBerkshire Hathaway Inc. New Common Stock
    Partial sale
    		SELL$1,001 – $15KMay 4, 2026Jun 3, 2026
    traded May 4, 2026
    		+30dHOUSE PTR

    Evidence

    35
    CM
    Christian D. MenefeeDJoint
    BRK.BBerkshire Hathaway Inc. New Common Stock
    Sale
    		SELL$1,001 – $15KFeb 10, 2026Jun 1, 2026
    traded Feb 10, 2026
    		+111dHOUSE PTR

    Evidence

    39
    CM
    Christian D. MenefeeDSpouse
    BRK.BBerkshire Hathaway Inc. New Common Stock
    Sale
    		SELL$15K – $50KFeb 10, 2026Jun 1, 2026
    traded Feb 10, 2026
    		+111dHOUSE PTR

    Evidence

    39
    CM
    Christian D. MenefeeDJoint
    BRK.BBerkshire Hathaway Inc. New Common Stock
    Sale
    		SELL$15K – $50KFeb 10, 2026Jun 1, 2026
    traded Feb 10, 2026
    		+111dHOUSE PTR

    Evidence

    32
    August PflugerRSelf
    BRK.BBerkshire Hathaway Inc. New Common Stock
    Purchase
    		BUY$15K – $50KMar 13, 2026Apr 15, 2026
    traded Mar 13, 2026
    		+33dHOUSE PTR

    Evidence

    21
    Gilbert Ray Cisneros, Jr.DSelf
    BRK.BBerkshire Hathaway Inc. New Common Stock
    Partial sale
    		SELL$1,001 – $15KMar 25, 2026Apr 7, 2026
    traded Mar 25, 2026
    		+13dHOUSE PTR

    Evidence

    25
    Gilbert Ray Cisneros, Jr.DSelf
    BRK.BBerkshire Hathaway Inc. New Common Stock
    Partial sale
    		SELL$1,001 – $15KMar 16, 2026Apr 7, 2026
    traded Mar 16, 2026
    		+22dHOUSE PTR

    Evidence

    Evidence

    Verified data

    Read directly from the primary public document; every field below is as reported by the filer.

    Source

    Document
    House Periodic Transaction Report
    Publisher
    Clerk of the U.S. House of Representatives
    Document ID
    20034201

    Timestamps

    Event (reported)
    Mar 16, 2026
    Published
    Mar 31, 2026
    Ingested by INSIDER
    Nov 5, 06:47 UTC
    Last re-read
    Nov 5, 06:47 UTC

    Extracted facts

    Filer
    Mark Alford
    Role
    Self
    Transaction
    Partial saleAs filed: “S (partial)”
    Asset
    sold @ $493.42/share SPY – 8.318 shares sold @ $670.024/share DIA – 8.426 shares sold @ $470.985/share SPYD – 57.383 shares sold @ $46.04/share AMZN – 25 shares sold @ $209.40/share AAPL – 20.313 shares sold @ $253.45/share QQQ – 4.105 shares sold @ $601.68/share PYPL – 9.021 shares sold @ $47.735/share Berkshire Hathaway Inc. New Common Stock
    Ticker
    BRK.B
    Reported value
    $1,001 – $15KAs filed: “$1,001 - $15,000”
    Execution date (reported)
    Mar 16, 2026
    Notification date (reported)
    Mar 16, 2026
    Days from execution to publication
    15

    Calculation

    Midpoint = (low + high) / 2. Used only to rank and sum ranges; the true value can be anywhere in the range.

    • Low: $1,001
    • High: $15,000

    = $8,001

    What this establishes

    Mark Alford reported a partial sale of sold @ $493.42/share SPY – 8.318 shares sold @ $670.024/share DIA – 8.426 shares sold @ $470.985/share SPYD – 57.383 shares sold @ $46.04/share AMZN – 25 shares sold @ $209.40/share AAPL – 20.313 shares sold @ $253.45/share QQQ – 4.105 shares sold @ $601.68/share PYPL – 9.021 shares sold @ $47.735/share Berkshire Hathaway Inc. New Common Stock. Members report a value range, not an exact amount, and do not report share counts or prices. Dates are as entered by the filer. A trade report is not evidence of wrongdoing.

    Extraction

    Method
    PDF text extraction
    Confidence
    1.00
    Self
    Mark Alfordbioguide:A000379

    Revision history · 0

    No field has changed since this record was first ingested.

    Company events

    No records

    No material filings recorded for this issuer.