The most significant insider transactions on today's Hot List are Form 4 filings by the co-founder and an executive vice president of DISH Network Corporation $DISH.

Between the two, they disclosed a $24 million purchase of their own stock.

The largest insider transaction on today's list is a Form 4 filing by George Lopez, founder and former CEO at ICU Medical $ICUI, who reported a $4 million purchase of his own stock.

We had two different insiders report purchases in the battered Bitcoin proxy MicroStrategy $MSTR.

In Elon Musk’s latest internet musings, he let the investing public know that the Twitter acquisition is on hold for the due diligence process.

Here’s what he said:

Jan Barta of Pale Fire Capital revealed an additional purchase of roughly $23 million in Groupon $GRPN, as he continues to build a position.

The CEO and the president of OPKO Health $OPK revealed a purchase of approximately 400,000 shares of his company's stock in a Form 4 filing.

I think it’s safe to say insiders are buying the dip!

This might be the most Form 4 filings we’ve seen in a single day since we started doing this.

And we’re seeing activity in all different sectors, from software to chemicals, including even casinos.

The most significant insider transaction on today’s Hot List is a Form 4 filing by the CEO of Uber Technologies $UBER, Dara Khosrowshahi.

The Silicon Valley executive revealed a purchase of roughly $5.3 million of his own stock.

Warren Buffett’s Berkshire Hathaway $BRK.A revealed more buying in Occidental Petroleum $OXY late last week.

In its latest 13G, the company reported a 21.6% ownership stake, which is roughly double its initial investment from earlier in the year.

The largest insider transaction on today's list comes to us in a Form 4 filing by Warren Buffett’s Berkshire Hathaway $BRK.A.

Buffett continues to grow his position in Occidental Petroleum $OXY. He just revealed an additional purchase that brings his total ownership to 226 million shares, representing a 12.15% interest.

The most significant insider transaction on today's Hot List is a Form 4 filing by the president and chairman of Warner Bros Discovery $WBD.

The CEO, chairman, president, and three directors of B. Riley Financial Inc $RILY filed Form 4s revealing purchases of their own stock.

Of the six insiders, the largest splash was made by chairman and CEO Bryant Riley himself. He reported purchasing over $10 million worth of shares.

Whenever we see this many insiders buying at the same time, we want to pay close attention.

What do they know?

The largest insider transaction on today’s list is a Form 4 filing by Simon Groom, who reported an additional $43 million purchase in the broadcasting company iHeartMedia $IHRT.

The chief financial officer at General Motors $GM, Paul Jacobson, revealed a purchase of roughly $1,357,650 worth of his own company's stock in a Form 4.

CFO activity always catches our attention as not many employees know and understand a company’s financial condition better.

The largest insider transaction on today’s list is a Form 4 filing by George Simeon, director of Nkarta Inc $NKTX, who reported a $10 million purchase.