Alex Rivera
Breaking News Editor
Breaking News Editor at 13F Insight. First to report on major SEC filings, institutional moves, and regulatory developments.
A note from Alex
Hey, I'm Alex. I spent three and a half years at Bloomberg writing breaking-news pieces about the kind of trades that move tickers in after-hours, and what I learned is that the news cycle moves a lot faster than the explanations do.
That's the gap I'm here to close. When a major insider files a Form 4 at 4:31pm, you should know about it by 5:00 — not in tomorrow's morning newsletter. And you should know what's actually new about it, not just that it happened.
I'll keep my pieces short, my numbers exact, and my opinions out of the lede. If something I wrote ages badly, I'll say so on the record.
Articles by Alex Rivera (685)
- News
Alphabet 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.
- News
Tutor 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.
- News
LendingTree 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.
- News
Power 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.
- News
Charles 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.
- News
Vertex 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.
- News
Cloudflare 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.
- News
Ventas 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.
- News
Boston 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.
- News
Scotts 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.
- News
Jay Schottenstein Has Traded $940 Million in Insider Stock Across American Eagle and Designer Brands
The retail dynasty heir has filed 2,872 insider transactions across 4 companies, selling $753 million and buying $187 million. Recent filings show large stock awards at AEO and Designer Brands.
- News
ServiceNow Founder Fred Luddy Has Sold $1.28 Billion in NOW Stock — But Recent Activity Has Nearly Stopped
Fred Luddy, founder of ServiceNow, has filed 1,798 insider transactions totaling $1.28 billion in sales. But his recent filings show almost no selling — just tiny award-related dispositions and gifts.
- News
Monolithic Power CEO Michael Hsing Has Sold $750 Million in MPWR Stock Across 1,747 Transactions
MPS CEO Michael Hsing sold roughly $15.3 million in MPWR shares on November 12, 2025 at prices near $970 per share, part of a two-decade selling program totaling $750 million.
- News
ICE CEO Jeffrey Sprecher Has Sold $777 Million in Stock — Including $43 Million in February 2026
Intercontinental Exchange CEO Jeffrey Sprecher sold 280,000 shares worth $43 million on February 18, 2026, continuing a systematic selling program that has totaled $777 million across 1,901 transactions.
- News
Nike Co-Founder Phil Knight Has Disposed of $3.1 Billion in NKE Stock Across 13,182 Transactions
Phil Knight's insider filing record spans 13,182 transactions since 2003 — the highest transaction count of any single insider in our database. Recent activity shows Class B to Class A conversions and gifts, not direct sales.
- News
John Malone Has Traded $1.7 Billion in Insider Stock Across 26 Liberty Companies Over Two Decades
The 'Cable Cowboy' has filed 2,004 insider transactions since 2003 across his Liberty empire, selling $1.26 billion and buying $402 million while restructuring one of media's most complex corporate webs.
- News
Intuit Founder Scott Cook Sold $50 Million in INTU Stock in a Single Day — Career Total Hits $2.35 Billion
Scott Cook, Intuit's founder, sold roughly 75,000 shares on December 30, 2025 at $669–$674 per share, netting about $50.5 million in one day. His career sell total now stands at $2.35 billion.
- News
Moderna CEO Stephane Bancel Bought $5 Million in MRNA Stock at $31 — His First Open-Market Purchase
After selling $1.19 billion in Moderna shares since 2008, CEO Stephane Bancel reversed course and bought 160,000 shares at ~$31 in March 2025 — a rare bullish signal at multi-year lows.
- News
Mark Zuckerberg Has Sold $20.5 Billion in Meta Stock Over 14,741 Transactions Since IPO
Meta's CEO and co-founder has filed 14,741 insider transactions since the 2012 IPO, selling $20.5 billion in META shares while retaining over 109 million shares.
- News
Arista Networks CEO and CTO Have Sold $2.9 Billion in ANET Stock Combined
CEO Jayshree Ullal ($2.2B across 1,941 filings) and CTO Kenneth Duda ($748M across 2,115 filings) continue systematic selling into Arista's AI-networking rally. Ullal sold $107M in a single September 2025 session.