Micron (MU) accounting chief sold 879 shares for $879,000, at exactly $1,000 each, two days before the 10% drop

Scott R. Allen, chief accounting officer at Micron (MU), sold 879 shares on July 23 at exactly $1,000.00 each. That's $879,000. His Form 4 reached the SEC four days later, and the checkbox that would flag the sale as a Rule 10b5-1 plan trade sits empty.

That empty box is why I opened the filing. A 10b5-1 plan gets signed months ahead and sells on its own calendar afterward, so the date on those trades says nothing about what the seller was thinking. An unchecked box means somebody picked the day.

Allen picked July 23, when Micron closed at $990.21. It closed at $920.95 on Friday and $900.20 on Monday. Two sessions after he sold, the stock sat 10 percent under his price.

The number that complicates it

Further down, the same form reports his holdings afterward: 34,958 shares, against 35,837 before the sale. The 879 he sold came to 2.4 percent of his stock.

Allen's timing spared him about $88,000 on those 879 shares. The 34,958 he kept lost roughly $3.5 million on paper across the same two sessions. If he'd seen the drop coming, a fortieth of his position is a strange amount to act on.

The price is the oddest part of the whole filing. Micron traded between $964.40 and $1,011.77 that day and Allen's fill came in at a flat $1,000.00. That's a tidy number to land on by accident. Round fills usually mean a limit order that's been sitting on the book, so the decision probably predates the day it executed.

He's done this before

Last October he sold 8,800 shares at $210.02 and collected $1,848,176. In January he sold 2,000 at $337.50 for $675,000. Last week's 879 shares at $1,000.00 came to $879,000. All three filings leave the 10b5-1 box empty.

Micron traded near $210 at that first sale and reached $1,255 in June. His stake has gone from 40,237 shares after that October sale to 34,958 today. So the share counts collapse while the money he takes off the table barely moves. That's what selling a set dollar amount looks like on the way up.

Why it stood out anyway

Our insider tracker logged 18 sales above $500,000 across the companies we follow between July 20 and July 23, setting aside shares withheld for taxes. Seventeen ran on 10b5-1 schedules, including Frank Slootman's $82 million at Snowflake, Michael Intrator's $24 million at CoreWeave and Olivier Pomel's $11.5 million at Datadog. Allen's $879,000 was the smallest of the 18 and the only discretionary one in the group.

Micron insiders have sold steadily all year, and our tracker counts 18 sales against a single purchase in 2026. Chief executive Sanjay Mehrotra accounts for about $106 million of that, every dollar of it through a 10b5-1 plan. The stock opened January at $295.13 and peaked at $1,255.00 in June, the kind of run that empties executive accounts.

What the filing actually says

A Form 4 reports four things: who sold, how many shares, at what price and on what date. Reasons stay off the form entirely. Executives sell for tax bills and houses and tuition and plain diversification. On paper every one of those looks identical to a sale made on a hunch about the coming quarter.

What survives that caveat is still worth writing down. Allen chose the moment himself. His order filled at a round $1,000.00 two days ahead of the chip selling that caught Micron, and he's still holding 97.5 percent of his shares. Filings for the company land on the Micron page as they arrive.

Sources

• SEC Form 4 for Scott R. Allen, Micron Technology, filed July 27, 2026 (accession 0001652149-26-000005)
• Micron daily and monthly closes, October 2025 through July 27, 2026
• AIStockWire insider tracker, sales above $500,000 traded July 20 to 23, 2026, excluding tax withholding