Updated Mar 1, 2026 · 2187 articles
Insights
Research, news and field guides on institutional positioning. Powered by real SEC filings — 13F, 13D/G, Form 4.
TransDigm 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.
Alex RiveraTutor Perini's Ronald Tutor Has Sold $578 Million and Bought $4.4 Million in TPC Stock
Ronald Tutor, longtime leader of construction giant Tutor Perini, has filed 1,809 insider transactions totaling $578 million in sales and $4.4 million in purchases across the company he led for decades.
Alex RiveraLendingTree Founder Douglas Lebda Has Sold $273 Million and Bought $8.7 Million in TREE Stock
Douglas Lebda, founder and former CEO of LendingTree, has filed 1,059 insider transactions totaling $273 million in sales and $8.7 million in purchases. His most recent filing is from February 2026.
Alex RiveraPower Integrations CEO Balu Balakrishnan Has Sold $179 Million in POWI Stock Across 1,975 Transactions
Balu Balakrishnan, President and CEO of Power Integrations, has filed 1,975 transactions selling $179 million in POWI stock — one of the most prolific semiconductor insider sellers by filing count.
Alex RiveraCharles River Laboratories Chairman James Foster Has Filed 3,711 Insider Transactions — Selling $266M and Buying $2M
James Foster, longtime chairman and former CEO of Charles River Laboratories, has filed 3,711 insider transactions since 2003, selling $266 million and purchasing $2 million in CRL stock.
Alex RiveraVertex Pharmaceuticals Founder Joshua Boger Has Sold $184 Million in VRTX Stock Across 1,769 Transactions
Joshua Boger, founder and former CEO of Vertex Pharmaceuticals, has filed 1,769 insider transactions totaling $184 million in sales, spanning the company's transformation from biotech startup to cystic fibrosis franchise leader.
Alex RiveraCloudflare President Michelle Zatlyn Has Sold $551 Million in NET Stock Across 1,901 Transactions
Michelle Zatlyn, co-founder and president of Cloudflare, has sold $551 million in NET stock since the company's 2019 IPO, making her one of the most prolific insider sellers in the cybersecurity sector.
Alex RiveraVentas CEO Debra Cafaro Has Filed 2,617 Insider Transactions and Sold $280 Million in VTR Stock
Debra Cafaro, the longtime CEO of healthcare REIT Ventas, has sold $280 million across 2,617 insider transactions since her tenure began, making her one of the most active CEO sellers in the REIT sector.
Alex RiveraBoston Beer President Martin Roper Has Filed 2,950 Insider Transactions Totaling $284 Million in SAM Sales
Martin Roper, longtime president of Boston Beer Company, has the highest transaction count among SAM insiders with 2,950 filings and $284 million in career sales since the Sam Adams maker went public.
Alex RiveraScotts Miracle-Gro Chairman James Hagedorn Has Filed 2,207 Insider Transactions Totaling $312 Million in Sales
James Hagedorn, chairman of Scotts Miracle-Gro, received a 142,315-share stock award in January 2026 while maintaining a steady cadence of quarterly awards and transfers across 2,207 career filings.
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