Updated Mar 1, 2026 · 785 articles
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Latest market intelligence, industry updates, and institutional investing news from SEC filings data.
WEC Energy's Gale Klappa Has Sold $295M in Stock Across 640 Transactions
WEC Energy Group executive Gale Klappa has executed 640 insider transactions totaling $295M in career sales, with a systematic exercise-and-sell pattern continuing into February 2026.
Alex RiveraC3.ai Chairman Thomas Siebel Has Sold $396 Million Across Two Tech Companies Over 565 Transactions
Thomas Siebel, the billionaire who built and sold Siebel Systems to Oracle, has now filed 565 insider transactions totaling $396 million — including recent exercise-and-sell activity at C3.ai in early 2026.
Alex RiveraCrowdStrike CEO George Kurtz Has Sold $702 Million in CRWD Stock Across 943 Transactions
George Kurtz, co-founder and CEO of CrowdStrike, has filed 943 insider transactions totaling $702 million in CRWD sales — most recently in February 2026 at prices above $413 per share.
Alex RiveraMurray Stahl Has Filed 6,612 Insider Transactions at RENN Fund — Almost All Tiny Purchases
Murray Stahl has filed 6,612 Form 4s for RENN Fund, buying $2.3 million of RCG stock across thousands of micro-purchases — often 18 to 360 shares at $2.85 each. His total career sales: $57,200.
Alex RiveraFormer Google CEO Eric Schmidt Filed 57,681 Insider Transactions — Selling $5.5 Billion in GOOG Stock
Eric Schmidt, Google's former CEO and chairman, holds the record for one of the highest Form 4 filing counts ever: 57,681 transactions totaling $5.5 billion in GOOG sales before stepping away in 2019.
Alex RiveraGoogle Co-Founder Larry Page Has Sold $11.5 Billion in GOOG Stock Across 12,019 Transactions
Larry Page, co-founder of Google and former CEO of Alphabet, filed 12,019 insider transactions totaling $11.5 billion in GOOG sales before his last filing in April 2022.
Alex RiveraIllumina Co-Founder David Walt Has Sold $114 Million in ILMN Stock — Now Buying Quanterix
David Walt, co-founder of Illumina's core bead array technology and director at Quanterix, has sold $114 million in ILMN stock across 4,807 transactions — while recently buying $1.4 million of QTRX shares.
Alex RiveraAlphabet Chairman John Hennessy Has Sold $64 Million in GOOGL Stock — Including $184K in February 2026
John Hennessy, Alphabet's chairman and former Stanford president, has filed 5,684 insider transactions totaling $64 million in GOOGL sales — with the latest batch on February 13, 2026.
Alex RiveraUMB Financial CEO J. Mariner Kemper Has Sold $91 Million in UMBF Stock — Including $2.4 Million in February 2026
J. Mariner Kemper, CEO of UMB Financial Corporation, has filed 3,764 insider transactions totaling $91 million in UMBF sales, with $2.4 million sold in early February 2026 at prices above $128.
Alex RiveraTransDigm Founder Nicholas Howley Has Sold $1.26 Billion in TDG Stock Across 3,515 Transactions
W. Nicholas Howley, the founder and former CEO of TransDigm Group, has filed 3,515 insider transactions selling $1.26 billion in TDG and related stock — most recently in November 2025 at $1,340+ per share.
Alex RiveraUnited Therapeutics CEO Martine Rothblatt Has Sold $1.05 Billion in UTHR Stock Across 6,305 Transactions
Martine Rothblatt, the founder and CEO of United Therapeutics, has filed 6,305 insider transactions totaling over $1 billion in UTHR sales — while continuing to exercise and sell options in December 2025.
Alex RiveraCimpress Founder Robert Keane Has Sold $129 Million in CMPR and ATRO Stock Across 4,058 Transactions
Robert S. Keane, founder of Cimpress (Vistaprint parent), has filed 4,058 insider transactions totaling $129 million in sales across CMPR and Astronics (ATRO).
Alex RiveraInsurance Mogul Patrick Ryan Has Bought $78 Million and Sold $181 Million Across Aon and Ryan Specialty
Patrick G. Ryan, founder of Aon Corporation and CEO of Ryan Specialty, has filed 2,444 insider transactions including $181 million in sales and $78 million in purchases across 3 companies.
Alex RiveraContinental Grain's Paul Fribourg Has Sold $402 Million and Bought $120 Million Across 9 Companies
Paul J. Fribourg, chairman of Continental Grain and director at multiple public companies, has filed 1,700 insider transactions including $402 million in sales and $120 million in purchases across 9 companies.
Alex RiveraTD SYNNEX Director Dennis Polk Has Sold $95 Million in SNX Stock Across 3,031 Transactions
Dennis Polk, director and former CEO of TD SYNNEX, has filed 3,031 insider transactions totaling $95 million in sales at the IT distribution giant he led through its transformative Synnex-Tech Data merger.
Alex RiveraM/I Homes Director Robert Schottenstein Has Sold $99 Million in MHO Stock Across 2,493 Transactions
Robert H. Schottenstein, longtime director at M/I Homes, has filed 2,493 insider transactions totaling $99 million in sales at the homebuilder he helped grow from a regional player to a national builder.
Alex RiveraCarnival's Micky Arison Has Sold $3.26 Billion in Cruise Line Stock Across 5,445 Transactions
Micky Arison, former CEO and chairman of Carnival Corporation, has filed 5,445 insider transactions totaling $3.26 billion in sales across CCL and CUK shares since 2003.
Alex RiveraEarly Google Investor Kavitark Ram Shriram Has Sold $2.16 Billion in GOOG Stock Across 2,385 Transactions
Kavitark Ram Shriram, one of Google's earliest investors and an Alphabet board director, has sold $2.16 billion in GOOG stock across 2,385 insider transactions since 2004.
Alex RiveraLegendary VC John Doerr Has Sold $1.58 Billion in GOOG Stock Across 3,078 Transactions
L. John Doerr, Kleiner Perkins chair and longtime Alphabet director, has filed 3,078 insider transactions including $1.58 billion in sales across Google and 14 other companies.
Alex RiveraAlphabet Co-Founder Sergey Brin Has Sold $25.3 Billion in GOOG Stock Across 10,633 Transactions
Sergey Brin, co-founder and director of Alphabet, has filed 10,633 insider transactions totaling $25.3 billion in sales — the largest insider sell total in the tech sector.
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