Ernest S. Rady, Executive Chairman, a director, and a 10%-plus owner of American Assets Trust, Inc. (NYSE: AAT), purchased another block of stock on August 14, 2026, according to a newly filed Form 4 with the SEC. Rady bought 50,000 shares on the open market at $22.79 per share, a transaction worth $1,139,500. Following the purchase, Rady’s indirect holdings, held through a trust or affiliated entity, stood at 8,802,531 shares.
This was not an isolated move. The August 14 purchase is the sixth open-market buy in a tight ten-day window, running from August 5 through August 14, 2026. Across those six transactions, Rady has now put a combined $8,587,577 of his own money into AAT stock. Filings of this kind, where the same insider repeatedly steps into the market to buy shares over a short stretch, are the type of activity whoisbuyingnow.com flags as a cluster buy.
What the Pattern Shows
A single insider purchase can reflect any number of personal factors, but a repeated sequence of buys from the company’s top insider, spread across multiple trading days and adding up to more than $8.5 million, is a more unusual signal. Rady already controlled a substantial stake in American Assets Trust before this run of purchases began, and his role as Executive Chairman and 10%-plus owner means these transactions are subject to standard SEC insider-reporting rules, which is how the filings became public.
Academic research on insider trading has found that clustered buying, multiple purchases by insiders within a short window, tends to correlate with stronger subsequent stock performance on average compared with single, isolated purchases. That said, this correlation is a historical pattern observed across large samples of filings and does not predict what will happen with any individual company or stock. Nothing in this filing, or in the broader pattern of Rady’s August purchases, should be read as a suggestion to buy or sell AAT shares.
American Assets Trust is a real estate investment trust with a portfolio spanning office, retail, and residential properties. Insider buying activity at REITs and other publicly traded companies is routinely disclosed through Form 4 filings, which are made public within a few business days of the transaction date. whoisbuyingnow.com tracks these disclosures as they are filed and will continue to note whether Rady’s buying activity extends further in the weeks ahead.
As always, this article is based solely on information contained in the public SEC filing described above and reflects a disclosure of past insider activity, not a forecast or endorsement of the stock’s future direction.
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Source: original SEC Form 4 filing.