Astera Labs, Inc. (NASDAQ:ALAB) shares are trading lower on Tuesday following the publication of regulatory filings detailing multi-million dollar stock liquidations by Board Chairman Manuel Alba.
Three Form 4 filings submitted to the U.S. Securities and Exchange Commission on Monday, show that the transactions took place on July 1.
The Nasdaq is down 1.38% while the S&P 500 has shed 0.32%, and Technology is lagging with a 1.7% loss.
• Astera Labs stock is taking a hit today. What’s pressuring ALAB stock?
Trading Plan Executions
The automated divestments occurred pursuant to a Rule 10b5-1 trading plan that Alba originally adopted on May 29, 2025. The sales impacted holdings under the Alba Trust, where Alba serves as co-trustee, and Casa Alameda 2007, LLC, where he acts as manager. The transactions spanned multiple tranches.
Alba sold a total of 173,366 shares: 30,723 shares through Casa Alameda 2007 and 142,643 shares through Alba Trust. Based on the midpoint price of $459.7300 per share, the approximate total value of the sales was $79.70 million.
Broader Semiconductor Sector Pressures
The sell-off coincides with sector-wide declines for fabless semiconductor companies. Market participants are reacting to preliminary second-quarter results from Samsung Electronics, which have renewed pressure on artificial intelligence infrastructure spending assumptions.
Today’s decline appears to be driven by a broader pullback in growth and momentum stocks, as investors rotate into defensive sectors such as Health Care, which is up 1.56%, and Utilities, up 1.24%. The selling pressure also reflects a technical breather after Amazon rallied to a fresh 52-week high in June.
Astera Labs Stock: Key Levels To Watch
From a trend perspective, the longer-term structure is still bullish: the stock is trading about 25% above its 50-day SMA ($312.64) and nearly 98% above its 200-day SMA ($197.34), with a golden cross that formed in May. The near-term picture is choppier, though, with shares now about 1.5% below the 20-day SMA ($395.95), which can act like a "line in the sand" for short-term momentum traders.
RSI is the cleaner momentum read right now: at 51.45, it’s back in neutral territory, signaling the prior overbought stretch (seen in June) has largely reset.
ALAB Stock Price Activity: Astera Labs shares were down 9.04% at $393.63 at the time of publication on Tuesday, according to Benzinga Pro data.
Photo: Piotr Swat via Shutterstock
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