CEO Matthew Angel buys $500,001 of Tempest Therapeutics, Inc. (TPST)

Matthew Angel, chief executive of Tempest Therapeutics, Inc., bought 231,482 shares on the open market on March 24, 2026 at an average of $2.16 a share, for a total of $500,001. The purchase was reported to the SEC on Form 4 on March 25, 2026.

It is a new position: the filing shows no shares held directly before this purchase.

The purchase came after a fall: Tempest Therapeutics, Inc. stock was down 26.6% over the 13 weeks before.

In the 12 months up to this filing, Tempest Therapeutics, Inc. insiders reported 1 open-market purchase and 0 sales.

WallStPal Score: 60 out of 100, because of a brand-new position; a large purchase; the stock had fallen 26.6% in the 13 weeks before; bought by a top executive.

What happened next: after 1 month the stock was down 14.4% (23.9 points worse than the S&P 500); after 6 months the stock was down 55.1% (72.5 points worse than the S&P 500). Based on weekly prices from the week of the purchase.

Our read

The first open-market purchase by Matthew Angel in our records, made after a 26.6% fall in 13 weeks, a setup where insider buying has historically mattered most. Insiders buy for many reasons and can be wrong; one purchase is a reason to look closer, not a reason to buy.

Source: SEC Form 4 filing ↗. This story was written automatically from the filing and weekly price data. Information, not investment advice.

Examples

Big insider purchases have made news before. In January 2016, with bank stocks falling, JPMorgan Chase CEO Jamie Dimon bought 500,000 JPMorgan shares, about $26 million of his own money, and the purchase was widely reported as a sign of confidence.

Explain it like I'm 13

Matthew Angel helps run Tempest Therapeutics, Inc.. Spending $500,001 of their own money on the company's stock is like a coach buying a big stack of tickets to their own team's games: it suggests they think the team will do well. It is not a promise, and insiders can be wrong.

More: all TPST insider trades · Matthew Angel's track record